100 install & ops manual

DXR 100Installation & Operation

D

Copyright © 1999 Digital Microwave Corporation

All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into anylanguage or computer language, in any form or by any means, electronic, magnetic, optical, chemical, manual or otherwise, without the priorwritten permission of Digital Microwave Corporation.

DISCLAIMER

Digital Microwave Corporation makes no representation or warranties with respect tot he contents hereof and specifically disclaims any impliedwarranties or merchantability or fitness for any particular purpose. Further, Digital Microwave Corporation reserves the right to revise thispublication and to make changes from time to time in the content hereof without obligation of Digital Microwave Corporation to notify anyperson or such revision or changes.

CE MARK

This equipment has been designed to meet the requirements of the European Electromagnetic Compatibility Directive 89/336/EEC (currentlyamended by 92/31/EEC). Operation of the equipment is designed to provide reasonable protection against harmful interference in itselectromagnetic environment without introducing intolerable electromagnetic disturbances.

TRADEMARKS AND REGISTERED TRADEMARKS

The DXR name and logo is a registered Trademark of Digital Microwave Corporation.Windows is a registered trademark of Microsoft Corporation in the United States and other countries.

Parts of the DXR product design are protected under Patent Cooperation Treaty Application No: PCT/NZ93/00046.

Corporate HeadquartersAmericas HeadquartersBroadband Division HeadquartersDigital Microwave Corporate170 Rose Orchard WaySan Jose, CA 95134USA

Tel: +1-408-943-0777Fax: +1-408-944-1801

Europe/Africa/Middle East HeadquartersDigital Microwave CorporateSiskin DriveMiddlemarch Business ParkCoventry CV3 4JAUnited Kingdom

Tel: +44-1203-863838Fax: +44-1203-530126

Asia Pacific HeadquartersDigital Microwave Corporate10 Ang Mo Kio Street 65#03-13 TechpointSingapore 569059

Tel: +65-484-7780Fax: +65-484-7768

Narrowband Headquarters3325 South 116th StreetSeattle, Washington 98168USA

Tel: +1 206 439 9121Fax: +1 206 439 2701

Long Haul Division Headquarters24 Bridge StreetLower HuttNew Zealand

Tel: +64 4 569 2170Fax: +64 4 5666 1247

This manual covers : DXR NET V2.0

Product Date: November 1999

Product Code: 100 INSTALL 5.2

Table of Contents

DIGITAL MICROWAVE CORPORATION iNOVEMBER 1999ISSUE 5.2

Table of Contents

TABLE OF CONTENTS I

LIST OF FIGURES IV

PREFACE VChanges to this Manual vProduct Compatibility v

Safety vCustomer Support vi

1 ABOUT THIS MANUAL 1Introduction 1How this Manual is Organized 1

2 GENERAL DESCRIPTION 3General 3Physical 4Non-protected DXR 100 Front Panel 5Protected DXR 100 Front Panel 7Functionality 10Optional Configurations 10

3 OPTIONAL EQUIPMENT 13Standard EOW 134-Wire EOW Adaptor 13Data Service Channel (V.24/RS-232) 14NMS Daughter Board 15

4 INSTALLATION PROCEDURES 16General 16

Lightning Protection 16Before You Begin 17Installing the Terminal 20Protected Terminal Maintenance 22Installing the Antenna 22G.703 Termination 23Alarm Termination 25Connecting the Standard EOW Option 25Connecting the 4-wire EOW Option 26

Table of Contents

ii DIGITAL MICROWAVE CORPORATION

NOVEMBER 1999ISSUE 5.2

EOW G.703 64 kbps Co-directional Connection 26Branching 27Data Service Channel 27DC Power Connection 29

5 USING DXR NET TO INSTALL A DXR 100 31Introduction 31Installing a DXR 100 with NMS from new, using a master blueprint 31Installing a DXR 100 with NMS from new, working from config sheets 33Installing a DXR 100 without NMS from new, using a master blueprint 34Installing a DXR 100 without NMS from new, working from config sheets 35Building a custom network blueprint 36

6 DXR NET LOCAL MAINTENANCE TOOL (LMT) 37Introduction 37What is the DXR NET Local Maintenance Tool? 37Requirements 39Preparing your PC to use the DXR NET LMT 40Connecting your PC to the DXR 100 terminal 41Using the DXR NET LMT 43Using the Explorer Tree functions 43Using the Configuration Workspace functions 49Using the Commissioning Workspace Functions 66Using the Maintenance Workspace Functions 75Problems Using the DXR NET LMT 81

7 COMMISSIONING 83General 83Powering Up 83Antenna Alignment 83

8 TECHNICAL SPECIFICATIONS 87Radio Frequency 87Digital 87Transmitter 88Receiver 88Duplexer (standard) 89Data Service Channel Option 89Orderwire Option 894-wire EOW Adaptor Option 90NMS Option 90Protected Option 90Environmental 90DC Power Supply 90Alarms 90Mechanical 91

APPENDIX A: ABBREVIATIONS 92

APPENDIX B: TYPICAL AGC CALIBRATION CHART 94

APPENDIX C: DUPLEXER ALIGNMENT 95

Table of Contents

DIGITAL MICROWAVE CORPORATION iiiNOVEMBER 1999ISSUE 5.2

General 95Tuning the Low Band Side 95Tuning the High Band Side 97Adjustable End Coupling 98

APPENDIX D: PIN-OUT INFORMATION 99G.703 Termination 99Alarm Termination 99Standard EOW Handset Connection 100Connecting the 4-wire EOW Option 100EOW G.703 64 kbps Co-directional Connection 100Data Service Channel Connections 100DC Power Connection 101

APPENDIX E: WINDOWS® “DIAL-UP” NETWORKING 102Connecting to a SMA or NMS Board 102

APPENDIX F: CORRECTABLE BYTES PER SECOND 105

APPENDIX G: IP NETWORK ADDRESSING 106

EXAMPLE 106Explanation 106NMS Board IP Network Design 106

APPENDIX H: SETTING UP LINKS WITH NMS BOARDS 112Setting Up a NMS board with a Single Link 112Setting Up a NMS board with Multiple Links 114

List of Figures

iv DIGITAL MICROWAVE CORPORATION


List of Figures

Page

FIGURE 1: NON-PROTECTED DXR 100 - SYSTEM BLOCK DIAGRAM 3FIGURE 2: NON-PROTECTED DXR 100 4FIGURE 3: PROTECTED DXR 100 4FIGURE 4: NON-PROTECTED DXR100 FRONT PANEL 5FIGURE 5: PROTECTED DXR 100 - CONNECTORS AND INDICATORS 7FIGURE 6: PROTECTED DXR 100 - SYSTEM BLOCK DIAGRAM 11FIGURE 7: DXR 100 FREQUENCY DIVERSITY CONFIGURATION - COMMON ANTENNA 12FIGURE 8: DXR 100 SPACE DIVERSITY CONFIGURATION 12FIGURE 9: NMS/EOW PORT CONNECTION 13FIGURE 10: DXR 100 - MINIMUM LIGHTNING PROTECTION REQUIREMENTS 19FIGURE 11: DXR 100 ORDERWIRE CONNECTION 27FIGURE 12: DXR 100 - DC POWER CONNECTOR 30FIGURE 13: DXR NET LMT GUI - TYPICAL DISPLAY 38FIGURE 14: MODEM/RF LINK SETUP PAGE FOR A PROTECTED TERMINAL 51FIGURE 15: THRESHOLDS PAGE 52FIGURE 16: ACTION TABLE PAGE 56FIGURE 17: INTERFACE SETUP PAGE WITH INTERFACE TYPE DROP-DOWN MENU 58FIGURE 18: EXTERNAL INPUTS/OUTPUTS PAGE - SETTING UP AN ALARM 60FIGURE 19: IP ADDRESS TABLE WINDOW 63FIGURE 20: ROUTING TABLE WINDOW 64FIGURE 21: ROUTING TABLE PAGE - TYPICAL IP ADDRESSES 66FIGURE 22: ALARMS PAGE 69FIGURE 23: CONTROLS PAGE 73FIGURE 24: ALARMS PAGE IN MAINTENANCE WORKSPACE 76FIGURE 25: CONSTELLATION DIAGRAM 77FIGURE 26: AGC GRAPH 78FIGURE 27: TERMINAL DETAILS PAGE 81FIGURE 28: DXR100 ANTENNA SIGNAL LOBES 84FIGURE 29: DXR 100 - CORRECT ANTENNA ALIGNMENT ON SIGNAL MAIN LOBE 85FIGURE 30: INCORRECT ANTENNA ALIGNMENT ON SIGNAL SIDE LOBE 85FIGURE 31: TYPICAL DXR100 AGC GRAPH 94FIGURE 32: DUPLEXER DIAGRAM 95FIGURE 33: LB1 DIP 96FIGURE 34: LB2 DIPS 96FIGURE 35: LB3 CURVE 96FIGURE 36: LB4 CURVE 97FIGURE 37: HB1 DIP 97FIGURE 38: HB2 DIP 98FIGURE 39: HB3 CURVE 98FIGURE 40: HB4 CURVE 98

Preface

DIGITAL MICROWAVE CORPORATION vNOVEMBER 1999ISSUE 5.2

Preface

Changes to this ManualBecause Digital Microwave Corporation is constantly seeking to improve quality andperformance, specifications and configurations may be subject to change without notice. Asperiodic changes are made to the information contained herein, Digital Microwave Corporationwill incorporate these changes into any new versions of this manual as they are released.

Product CompatibilityWhile every effort has been made to verify the operation of DXR 100 with many differentcommunications products and networks, Digital Microwave Corporation makes no claim ofcompatibility between DXR 100 and other vendors' equipment. It is assumed that users havethoroughly evaluated the performance of DXR 100 in the environment in which it is to be used.

Safety

GeneralPlease observe the general safety precautions outlined in this section during all phases ofoperation and service of DXR 100. If you do not comply with these precautions or withspecific safety warnings contained elsewhere in this manual or on the product itself, you willviolate the standards of design, manufacture, and intended use of the product. DigitalMicrowave Corporation does not assume any liability for any failure to comply with theseprecautions.

To help you to easily recognise safety warnings or precautions contained in this manual theyare prefixed by the warning symbol shown above.

GroundingThe DXR 100 chassis must be grounded. If a short circuit occurs, grounding will reduce therisk of electrical shock by keeping the equipment at the same potential as a person touching it.Do not remove the external covers unless you are authorised to service the equipment.

Radio Frequency (RF) Energy HazardWhen DXR 100 is transmitting, the antenna emits intense RF energy which may cause injury tosomeone coming into contact with it. It is therefore dangerous to stand, or have any part ofyour body in front of the antenna during transmissions.

Preface

vi DIGITAL MICROWAVE CORPORATION


Beryllium OxideThe transmitter module of DXR 100 contains Beryllium Oxide ceramic. This substance iscompletely safe while in solid form within the module but is highly toxic if inhaled or absorbedby the skin in powder form. You should therefore be extremely careful when handling thecomponents to ensure that you do not chip, grind or damage them.

Fire HazardDo not install or operate DXR 100 in any environment where there are flammable gases orfumes. To do so will create a significant safety hazard and may expose you to the risk ofphysical injury.

Electrostatic Discharge (ESD)Electrostatic discharge (ESD) can damage or destroy the sensitive electrical componentscontained within DXR 100. Therefore, you must always use full ESD precautions wheneverthe external covers of DXR 100 are removed.

Part ReplacementDo not install parts, substitute parts or perform any unauthorised modification to DXR 100. Ifrepair is required, you should return the product to your Digital Microwave Corporationrepresentative, or directly to Digital Microwave Corporation at the address given in CustomerSupport, to ensure that safety features are maintained.

Customer SupportIf after reading this manual you experience any difficulty installing or using DXR 100, youshould first contact your local Digital Microwave Corporation representative or alternativelycontact Digital Microwave Corporation as follows:

Digital Microwave Corporation

24 Bridge Street

Lower Hutt

Wellington

NEW ZEALAND

Telephone: +64 4 569-2170

Facsimile: +64 4 566-1247

E-mail: [email protected]

Attention: Customer Services Department

About this Manual

DIGITAL MICROWAVE CORPORATION 1NOVEMBER 1999ISSUE 5.2

1 About this Manual

IntroductionThe purpose of this manual is to provide the technical information necessary to allow you toinstall and commission the DXR 100 Digital Microwave Radio. This manual contains basictechnical descriptions at module and system level, and is designed to be used by trainedtechnicians and/or engineers. It does not provide information or instruction on basic technicalprocedures.

We recommend that you read the relevant sections of this manual thoroughly before beginningany installation or operational procedures on DXR 100.

How this Manual is Organized

Section 1 - About this ManualThis section gives an outline of the content and aim of the manual, and also providesinstructions on how to use it.

Section 2 - General DescriptionThis section provides functional descriptions of the standard hardware and configurationsassociated with the DXR 100.

Section 3 - Optional EquipmentThis section provides descriptions of the optional equipment that can be supplied with DXR100.

Section 4 - Installation ProceduresThis section contains step-by-step procedures for installing and commissioning the DXR 100.It outlines the tools and equipment you will need, as well as power and antenna requirements.

Section 5 - Installation Using DXR NET

This section contains step-by-step procedures for configuring the DXR 100. It assumes youhave the required parameters and know how to use DXR NET.

Section 6 - DXR NET Local Maintenance Tool (LMT)This section provides detailed information on setting up and using the DXR NET software aswell as detailed explanations of the screens and menus.

About this Manual

2 DIGITAL MICROWAVE CORPORATION


Section 7 - CommissioningThis section provides you with the information necessary to commission the DXR 100 afterinstallation and includes details of antenna alignment procedure.

Section 8 - Technical DescriptionThis section provides you with the technical and physical specifications of the DXR 100,associated interfaces and options.

AppendicesThe appendices contain information that relates to the content of this manual but is notappropriate for the main body of the document. They include the following:

• Abbreviations

• AGC Calibration Graph

• Duplexer Alignment

• Cable Pin-out Information

• Windows® “Dial-up” Networking

General Description


2 General Description

General DXR 100 is a point-to-point digital microwave radio system designed primarily for medium tolong haul, thin route telecommunications networks. It comprises a digital radio packaged in astandard 19 inch 3U horizontal rack shelf or 120 mm slim rack.

DXR 100 uses advanced digital signal processing techniques and powerful low overheadforward error correction (FEC) to support a range of data rates with excellent spectrumefficiency. Reed-Solomon FEC code corrects up to 10 errors per 204 byte block, virtuallyeliminating noise and residual bit error rate problems often experienced in urban low frequencymicrowave systems. A 16 tap transversal equalizer is included to reduce the effects ofmultipath interference.

Figure 1 is a system block diagram of a non-protected DXR 100.

Figure 1: Non-protected DXR 100 - System Block Diagram

DXR 100 is designed to operate in the following frequency bands and capacities:

Frequency Ranges N x E1 Unframed G.703 Capacity Data Rate 330-470 MHz 2000-2300 MHz 1 x E1 1 x 2 Mbps 890-960 MHz 2300-2500 MHz 2 x E1 2 x 2 Mbps 1350-1550 MHz 2500-2700 MHz 4 x E1 4 x 2 Mbps

General Description



Physical DXR 100 is designed as an all-in-one cast aluminium housing. The single unit, conceptprovides improved EMC performance which meets the ETSI ETS 300 385 EMC/EMIspecification.

All connections are front mounted for easy installation and access. The duplexer is mountedexternally on the chassis which allows frequencies to be retuned without the need to removecovers. The standard duplexer fits within the 3U height of the terminal. Alternate types ofduplexers can also be readily connected to provide transmit to receive separations narrower thanthose provided as standard.

Figure 2: Non-protected DXR 100

DXR 100 terminals are also available in protected and upgradeable configurations. As in thenon-protected DXR 100, connections are front mounted. The standard duplexer fits within the3U height of the protection switch interface.

The protected DXR 100 comprises:

• A main radio modem RF unit

• A standby radio modem RF unit (physically identical to the main radio modem RF unit)

• A protection switch interface

The upgradeable DXR 100 comprises a protection switch interface with one radio modem RFunit.

Figure 3: Protected DXR 100

General Description


Non-protected DXR 100 Front Panel Figure 4 shows the connectors and indicators on a DXR 100 front panel.

Figure 4: Non-protected DXR100 Front Panel

1 ANTENNA N type female connector for connecting the antenna.

2 OK Green - indicates no faults have been detected on the terminal.

Orange - indicates a fault has been detected. The radio isoperational but with limited function.

Red - indicates the terminal has failed and is not operational.

3 ALARM Red - indicates a user-defined alarm has been reported.

Off - indicates no user-defined alarms have been reported.

4 BER Red - indicates receiving uncorrectable errors.

Orange - indicates correctable errors are detected at a higherBER level than the user defined level.

Green - indicates a correctable error has been detected andcorrected.

Off - indicates no errors are being detected across the radio path.

5 SIGNAL Green - indicates a good signal is present

Orange - indicates the AGC is outside the preset user-definedvalues.

Red - indicates the radio is out of lock and the signal is notsufficient for the modem to lock onto and receive data.

6 AGC Provides a 2.5 mm test point socket for a DC voltmeter. Allowsmeasurement of local terminal AGC voltage.

7 CALL Button to initiate ‘all station’ calling. Calling begins when thebutton is pressed and finishes when it is released.

General Description



8 HANDSET Provides connection for DXR orderwire press-to-talk telephonehandset.

9 POWER DB3W3 male connector for connecting DC input power via 3high current contacts.

10 INTERFACE 1 DB-25 style female connector provides multiple E1 termination toG.703.

11 ALARMS DB-15 female connector for alarm input and output connection.

12 INTERFACE 2 DB-25 female connector for future expansion and connections tooptional 4-wire EOW adaptor.

13 INTERFACE 3 DB-9 female connector for future expansion and connections tooptional Data user channel or 4-wire EOW adaptor.

14 V.24 DB-9 female connector for providing a V.24/RS-232communications port for the PC to support DXR NET orProVision. See Section 5 in this manual.

15 NMS/EOW OUT DB-9 male connector 64 kbps port to support EOW and networkmanagement.

16 NMS/EOW IN DB-9 female connector 64 kbps port to support EOW andnetwork management.

General Description


Protected DXR 100 Front Panel Figure 5 shows the connectors and indicators on the front panels of the radio modem units andthe protection switch interface in a protected DXR 100 terminal.

Note: The upgradeable DXR 100 terminal is identical, except that it only has one radiomodem unit.

Figure 5: Protected DXR 100 - Connectors and Indicators

1 POWER DB3W3 male connector for connecting DC input power via 3high current contacts.

2 ALARMS DB-15 female connectors for alarm input and outputconnection.

3 TX SMA connector for Tx output of the RF unit.

4 RX SMA connector for Rx input of the RF unit.

General Description



5 OK Green indicates no faults have been detected on the PSI.

Orange indicates one of the following:

• processor self-test

• the link is trying to reset

• a fault

• a user-defined alarm has been reported

• selection of the active transmitter has been set to manual

Red indicates the unit has failed to communicate with eitherradio, and is not operational

6 ALARM Red indicates one of the following:

• a user-defined alarm has been reported

• uncorrectable errors have been detected

• loss of signal at the E1 input

Off indicates none of the above have been reported.

7 BER Red indicates receiving uncorrectable errors.

Orange indicates correctable errors are detected at a higherBER level than the user defined level.

Green indicates a correctable error has been detected andcorrected.

Off indicates no errors are being detected across the radio path.

8 SIGNAL Green indicates a good signal is present.

Orange indicates the AGC is outside the preset user-definedvalues.

Red indicates the radio is out of lock and the signal is notsufficient for the modem to lock onto and receive data.

Off indicates a possible processor fault.

9 AGC Provides a 2.5 mm test point socket for a DC voltmeter. Allowsmeasurement of local RF unit AGC voltage.

10 HIGH SPEEDDATA CABLE

Multicore cable for data link between Radio A or Radio B andthe Protection Switch.

11 PROTECTIONINTERFACE

DB9 connector for connecting the high speed data link betweenthe Protection Switch and Radio A or Radio B.

12 TX A SMA connector for Tx input from Radio A to the ProtectionSwitch.

General Description


13 RX A SMA connector for Rx output from the Protection Switch toRadio A.

14 TX B SMA connector for Tx input from Radio B to the ProtectionSwitch.

15 RX B SMA connector for Rx output from the Protection Switch toRadio B.

16 CALL Button to initiate ‘all station’ calling. Calling begins when thebutton is pressed and finishes when it is released.

17 HANDSET Provides connection for DXR orderwire press-to-talk telephonehandset.

18 ANTENNA N type female connector for connecting the antenna.

19 RADIO A/RADIO B

DB-9 connector for connecting the high speed data link betweenthe Protection Switch and Radio A or Radio B.

20 INTERFACE 1 DB-25 style female connector provides multiple E1 terminationto G.703.

21 INTERFACE 2 DB-25 female connector for future expansion and connection tooptional 4-wire EOW adaptor.

22 INTERFACE 3 DB-9 female connector for future expansion and connection toData user channel or optional 4-wire EOW adaptor.

23 V.24 DB-9 female connector for providing an V.24/RS-232communications port for the PC to support DXR NET orProVision.

24 NMS/EOWOUT

DB-9 male connector 64 kbps output port to support EOW andnetwork management.

25 NMS/EOW IN DB-9 female connector 64 kbps input port to support EOW andnetwork management.

26 AUX Not currently supported.

27 OK Green indicates normal operation, ie. no faults have beendetected in the RF unit. The LED on the active transmitter is onconstantly, the LED on the standby transmitter flashes.

Flashing from Red to Orange indicates that software is beingloaded to the RF unit.

General Description



Functionality

General DXR 100 uses similar RF and modem design regardless of capacity; however the G.703 digitalinterface is changed to support capacities from 1 x E1 to 4 x E1.

Digital Interface The digital interface combines the E1 inputs and complies with the ITU-T RecommendationG.703. Standard E1 interface connections are 120 ohm balanced, accessed via the front panelDB-25 connector. If some ports require 75 ohm connections external 120 ohm to 75 ohm baluntransformers may be used. If all ports require 75 ohm connections, all radio E1 interfaces maybe set to 75 ohm operation via a software change.

Note: Although a software change can set E1 output interfaces from 120 to 75 ohm (andvice versa), the E1 input impedance remains at 120 ohm. To prevent matchingproblems, all 75 ohm accessory cables for the DXR 100 are fitted with matchingresistors to obtain a 75 ohm input.

Modem and Radio The modem combines the E1 inputs and appends the FEC parity bytes. DQPSK, or 16 QAMmodulation is applied and the signal is sent to the transmitter for up-conversion to theappropriate microwave frequency and higher power. The radio signal is sent to the antenna viaa duplexer.

The radio signal is received at the remote terminal where it is down converted and processed bythe 16 tap transversal equalizer to compensate for multipath interference.

After demodulation any errored bytes are corrected using the Reed-Solomon FEC algorithm.

Optional Configurations

Protected Configuration The protected DXR 100 configuration consists of a three unit system consisting of main andstandby radio modem RF units. Two radios interconnect to a common switch-interface unit.The units mount into an 7U high, 19 inch rack space. The packaging and connections allows afaulty radio-modem unit to be removed and serviced while maintaining the link fullyoperational.

Figure 6 shows a system block diagram of the protected DXR 100.

General Description


Figure 6: Protected DXR 100 - System Block Diagram

Monitored hot standby (MHSB) is offered with all frequency bands of protected system asstandard. Switching on receive is fully automatic and is based on detection of uncorrectableerrors by the forward error correction (FEC) circuit. Manual mode may be selected to allow oneprotected radio to be replaced while maintaining normal operation via the other radio.

The protected option can be configured to switch from the main to the standby transmitter byselecting any one of the following alarm conditions:

• Low transmitter forward power

• Temperature too high

• Local oscillator out of lock

• Major alarm (triggered by failure of any sub-module)

• Manual switch-over commands for testing and maintenance

Upgradeable Configuration DXR 100 is available in an upgradeable configuration similar to the standard protectedconfiguration. This consists of a single protected radio and protection switch, upgradeable to afully protected configuration by the addition of a second protected radio.

Note: In this upgradeable configuration, the terminal must be set to the manual switchingmode. This is to prevent it attempting to switch to a non-existent second radio in theevent of a failure of the single protected radio. Refer to Section 4 in this manual fordetails on how to achieve this.

Provided the correct procedure is followed, this configuration can be upgraded to the fullyprotected configuration without interfering with the operation of the active link. Refer to“Protected Terminal Maintenance” in Section 4.

General Description



Space and Frequency Diversity Configurations DXR 100 baseband switching provides true errorless space diversity and can support frequencydiversity operation. The FEC provides warning of path degradation while still correctingaffected data until the decision is made to use data from the alternate path. When using asingle transmit antenna however, the coaxial relay switch introduces a 100 ms switching time incase of transmitter failure.

The Frequency Diversity and Space Diversity configurations are shown in Figures 7 and 8.

DXR 100ProtectedTerminal

F1,3

F2,4

F3

F4

F2

F1F1Tx A

Rx A

Tx B

Rx A

Duplexer

Hybrid

DXR 100 Protected Terminal

Frequency Diversity Configuration - Common Antenna

Duplexer

Figure 7: DXR 100 Frequency Diversity Configuration - Common Antenna

Note: Dual antenna frequency diversity is also available upon request from DigitalMicrowave Corporation.

DXR 100 Protected Terminal

Duplexer

Tx CoaxSwitchRelay

Filter

Tx A

Tx B

Rx A

Rx B

F1

F1

F2

F2

F2 F1

F1,2 Tx A, Tx B, Rx A

Rx B

DXR 100ProtectedTerminal

Space Diversity Configuration

Figure 8: DXR 100 Space Diversity Configuration

Optional Equipment


3 Optional Equipment

Standard EOW The standard EOW option provides network-wide communication during installation andmaintenance. It uses a telephone handset to provide a connection with the followingcharacteristics:

• general (all station) calling

• compatibility with DXR 200 orderwire in general call mode

• G.703 64 kbps co-directional expansion ports (NMS/EOW IN and NMS/EOW OUT)provide linking to the next DXR or other orderwire network

Connection of NMS/EOW Ports using a 3-way branching example is shown in Figure 9.

Figure 9: NMS/EOW Port Connection

Note: Power and traffic connections are not shown.

4-Wire EOW Adaptor The DXR 100 4-wire EOW adaptor replaces the standard EOW telephone handset with a600 ohm 4-wire analogue interface. It can be installed in the interface 2 or interface 3 positionon the DXR 100 front panel.

Note: If the data service channel has been installed in the DXR 100, the adaptor will beinstalled in the Interface 2 position.

Optional Equipment



This option enables the DXR 100 to be connected to another non-DXR NETwork, or to anintercom system. It has the following characteristics:

• balanced 600 ohm input and output circuits for voice traffic

• half-duplex PTT input, enabling transmit audio from customer to DXR 100 network

• general (all station) calling input

• paging output, providing a change-over relay which operates if another station is pressingthe call button

• branching NMS/EOW connections via G.703 64 kbps co-directional expansion ports, asper standard orderwire option

Note: Any combination of DXR 100 terminals installed with the standard EOW option, andterminals installed with the 4-wire EOW option, can be used on the same network.

Data Service Channel (V.24/RS-232) An optional data service channel interface is available to provide an asynchronous V.24/RS-232Data (modem) interface. This interface is ideally suited to the transport of network managementinformation from alternate manufacturers, or to provide a transparent data channel for otherequipment. There are two types of data service channel interface available, Data I and Data II,depending on customer requirements.

The daughter boards are purchased separately on a per channel basis and are required at eachend of the link. If the data circuit is required across multiple links, then daughter boards must befitted to each terminal with appropriate linking cables to connect them at repeater sites. Oncefitted, these daughter boards provide transparent transmission of data up to the maximum datarate specified. There is no additional software configuration required by the user, once fittedand connected these interfaces are fully functional.

Note: Data service channel is not a field-upgradeable option, and should be specified at thetime of equipment purchase.

V.24/RS-232 Asynchronous Data Interface Features

Data I Features The Data I interface has the following characteristics:

• V.24/RS-232 asynchronous DCE interface

• DB-9 female (PC/AT style modem) connection (interface 3 position)

• transparent channel up to specified baud rate limits

• for 1 x E1 and 2 x E1 interface, up to 2400 bps across a single link, 1200 bps acrossmultiple links, and a 1 x 32 kbps overhead channel available (interface 3)

• for 4 x E1, up to 4800 bps across a single link, and 2400 bps across multiple links, and a 1x 64 kbps overhead channel available (interface 3)

Optional Equipment


Data II Features The Data II interface has the following characteristics:

• V.24/RS-232 asynchronous DCE interface

• DB-9 female (PC/AT style modem) connection (interface 3 position)

• DIP switch selectable baud rates available for all capacities (1 x E1, 2 x E1, 4 x E1) acrosssingle and multiple hops: 1200, 2400, 4800, 9600 and 19k2 bps

• DIP switch selectable data length and parity: 7 or 8 data bits, odd, even or no parity

NMS Daughter Board The DXR 100 offers an optional network management interface board (NMS option board),which provides the SNMP agent and transport for DXR NET NMS. This option must bespecified at time of equipment purchase, since it is not field-upgradeable (except by a DMCCustomer Services Representative), without void of warranty.

Note: DXR 100 terminals fitted with the NMS option cannot be mixed in the same networkwith DXR 100 terminals not fitted with the NMS option.

When the NMS board has been fitted to all network terminals, any terminal in the network canbe managed using either DXR NET or ProVision. Depending on terminal capacity, the NMSboard uses 32 kbps of wayside capacity as an inter-terminal communication channel. The DXR100 NMS option can also work with an SMA to build an NMS network.

Installation Procedures



4 Installation Procedures

GeneralNote: This section covers installation of the hardware associated with the DXR 100

terminal. For information regarding software installation and configuration pleaserefer to Section 5.

This section provides step by step instructions for installing Protected and Non-protectedDXR 100. It also provides a list of tools and equipment that you will require for the installation,and guidelines on lightening protection and some information to assist you with antenna siting.It does not contain details on site planning and/or preparation.

We recommend that you read this section thoroughly and familiarize yourself with theprocedures contained in it before beginning installation.

Lightning Protection Unless suitable external protection devices are installed, all modern telecommunicationsequipment is vulnerable to damage from lightning induced transients. To avoid this risk, werecommend that you install primary lightning protection devices to protect DXR 100. Youshould install these devices in accordance with the manufacturers instructions.

The two key areas that need to be protected are:

• Antenna feeder

• External connections to other equipment

Digital Microwave Corporation has a comprehensive range of lightning protection equipmentsuitable for protecting DXR 100 and a customer services representative would be happy todiscuss your requirements. For more information please contact Customer Services using thecontact details contained in the Preface to this manual.



Before You Begin

Tools and Equipment Digital Microwave Corporation recommends that you have the following tools and equipmentavailable before beginning the installation:

• One large flat-blade screwdriver with a blade of approx. 10 mm

• One small flat-blade screwdriver with a blade of approx. 2.5 mm

• Wire stripper or knife

• Soldering iron and solder

• Side-cutting and long nosed pliers

• Two adjustable 200 mm crescent wrenches or N-type connector tools

• Digital multimeter

Accessory Kit Digital Microwave Corporation supplies an accessory kit free-of-charge with every DXR 100terminal. For a non-protected DXR 100, the kit contains:

• one DB15 3C3 backshell, maximum cable diameter 7.62 mm

• one DB15 male solder bucket

• one DB15 backshell, maximum cable diameter 9.53 mm


• one DB9 female solder bucket

• two DB9 backshells, maximum cable diameter 9.4 mm



• 3C3 female solder bucket + 3H/Shr

• two fuses, 4 A Fastblow Schurter SP Series or Wickmann 194

• two fuses, 8 A Fastblow Schurter SP Series or Wickmann 194

• one N type connector, male-to-female adaptor, right-angle

• one heatshrink 25 mm




For a protected DXR 100, the kit contains:

• three DB15 3C3 backshells, maximum cable diameter 7.62 mm




• one DB9 female solder bucket

• two DB9 backshells, maximum cable diameter 9.4 mm



• three 3C3 female solder buckets + 3H/Shr

• six fuses, 4 A Fastblow Schurter SP Series or Wickmann 194

• six fuses, 8 A Fastblow Schurter SP Series or Wickmann 194

• one N type connector, male-to-female adaptor, right-angle

• one heatshrink 25 mm

Power Supply Requirements You should ensure that the correct power supply is available for powering DXR 100. Thenominal input voltage for a DXR terminal is either 48 volts DC or (optionally) 24 volts DCwith either polarity to ground.

The terminal voltage is written on the specification label fitted to the terminal cover as well asthe front panel.

Coaxial Cable Requirements Digital Microwave Technology recommends that you use Andrews Corporation or RFSAustralia Pty Ltd coaxial cable (or approved equivalent low loss cable) with the DXR 100.For installations requiring long antenna cable runs, Andrew HeliaxTM or equivalent should beused.

You should run coaxial cable from the DXR 100 installation site to the antenna ensuring youleave enough extra cable at each end for service loops. Terminate and earth, or ground thecables, in accordance with the manufacturer's instructions. The cable sheath must be bonded tothe base of the mast.

Note: Digital Microwave Technology is able to supply cable and connector requirementsfrom stock. Further lightning protection pre-caution information is also available.For more information please contact Customer Services using the contact detailscontained in the Preface to this Manual.



Antenna Requirements Proper path planning is essential and these notes are not intended to replace this. However, youshould note the following points when selecting an antenna site for DXR 100:

• It should be as high as possible to ensure the antenna clears local obstructions such as treesand buildings

• It should be well away from sources of interference such as electrical equipment, powerlines and roads

• Where possible do not point the antenna in the direction of any smooth reflective surfaces,such as water, which could cause multipath reflections. If this is unavoidable it is preferableto mount the antenna on the far side of a building roof (or similar) so that the front edge ofthe building provides shielding from the source of interference

In addition you need to consider lightning protection. Figure 10 shows the minimumrequirements.

DXR 100

Ea rth to To w e r Le g

o r G round

Lightning Protection

Ea rth


Ea rth


Figure 10: DXR 100 - Minimum Lightning Protection Requirements

Digital Microwave Corporation Customer Services can provide assistance in all areas of siteselection and path planning.




Installing the Terminal

General The DXR 100 is designed to be installed in a standard 19 inch rack by using the front mountingbracket on each side of the terminal. Suitable screws and flat washers are included as standardwith all racks supplied by Digital Microwave Corporation.

Note: You should ensure matching screws and flat washers are provided for racks sourcedfrom elsewhere.

The DXR 100 can be installed in three configurations:

• Non-protected. This consists of a single DXR 100 radio in a rack

• Protected. This consists of two protected DXR 100 radio modem units and one protectionswitch, with the protection switch mounted between the radios

• Upgradeable. This consists of one protected DXR 100 radio modem unit and one protectionswitch, with the protection switch mounted above or below the radio

A DXR 100 requires 3U (133 mm) of vertical space in the 19 inch rack and DXR 100Protected requires 7U. If the ambient temperature is above 30º C, you should provide anadditional 1U blank space above and below the terminal. The terminal must be mounted toallow air convection through the heatsink and to give clear access to the front of the terminal toallow for cabling.

Procedure for Non-protected DXR 100Step 1: Lift the DXR 100 into the rack using two people to distribute the weight.

Step 2: Align the DXR 100 with the rack mounting rails and use the screws and washers tosecure it. Ensure the screws are firmly tightened.

Procedure for Protected DXR 100 Please refer to Figure 5 on page 7.

Note: Terminals operating at frequencies below 2 GHz come supplied with K0225P dualscreened co-axial cable. Terminals operating at frequencies of 2 GHz and abovecome supplied with Sucoform cables.

Step 1: Using two people to distribute the weight, insert the radio modem unit to be mountedunder the protection switch into the rack. Align it with the rack mounting rails, andsecure it in place with the screws and washers. Ensure the screws are firmly tightened.

Step 2: Insert the protection switch into the rack, aligning it with the next available rackmounting rails above the already fitted radio modem unit. Secure the protection switchin place with the screws and washers. Ensure the screws are firmly tightened.



Step 3: Again using two people to distribute the weight, insert the radio modem unit to bemounted above the protection switch into the rack. Align it with the next availablemounting rails above the protection switch, and secure it in place with the screws andwashers. Ensure the screws are firmly tightened.

Step 4: Fit one cable assembly 15 (see markings on cable) from Radio A ‘Tx’ to the TX Aconnector on the PSI, and a second cable assembly 15 from Radio A ‘Rx’ to the RXA connector on the PSI.

Step 5: Bend the cables to align the SMA connectors to the mating connectors on the moduleto prevent cross threading. Note the one-time bend radius for Sucoform cables is15 mm. Torque the SMA connectors to a maximum of 0.5 Nm using a suitable torquespanner. Ensure the centre ferrule does not rotate during tightening as this willdamage the cable.

Step 6: Fit one cable assembly 16 (see markings on cable) from Radio B ‘Tx’ to the TX Bconnector on the PSI, and a second cable assembly 15 from Radio B ‘Rx’ to the RXB connector on the PSI.

Step 7: Fit the high speed data link cable from the protection interface port of Radio A to theRadio A port on the protection switch.

Step 8: Fasten the two connector fastening screws at each end of the cable.

Step 9: Fit the high speed data link cable from the protection interface port of Radio B to theRadio B port on the protection switch.


Procedure for Upgradeable DXR 100 Please refer to Figure 5 on page 7, but remember that depending on your choice of radio modemunit positioning, one of the radio modem units shown will not be present.

Note: Terminals operating at frequencies below 2 GHz come supplied with K0225P dualscreened co-axial cable. Terminals operating at frequencies of 2 GHz and abovecome supplied with Sucoform cables.

Step 1: Using two people to distribute the weight, insert the radio modem unit into the rack.Align it with the rack mounting rails, and secure it in place with the screws andwashers. Ensure the screws are firmly tightened.

Step 2: Insert the protection switch into the rack, aligning it with the next available rackmounting rails above or below the radio modem unit, as required. Secure it in placewith the screws and washers. Ensure the screws are firmly tightened.

Step 3: Fit a cable assembly 15 (see markings on cable) from the radio ‘Tx’ to the TX Aconnector on the PSI, and a second cable assembly 15 from the radio ‘Rx’ to the RXA connector on the PSI.




Step 4: Bend the cables to align the SMA connectors to the mating connectors on the moduleto prevent cross threading. Note the one-time bend radius for Sucoform cables is15 mm. Torque the SMA connectors to a maximum of 0.5 Nm using a suitable torquespanner. Ensure the centre ferrule does not rotate during tightening as this willdamage the cable.

Step 5: Fit the high speed data link cable from the radio protection interface port to the RadioA port on the protection switch.


Protected Terminal MaintenanceNote: For the details on how to remove and attach cabling, refer to the preceding procedure

on installing a protected terminal.

In a protected or diversity link, one of the radio modem units can be removed during while thelink is operational without affecting traffic or introducing errors to the actual link, as long as thefollowing procedure is observed:

Step 1: Use DXR net to set the switching mode of the terminal to “Manual” and lock theterminal path to the radio modem unit which is not going to be replaced.

Step 2: Remove the DC supply to the radio modem unit to be replaced.

Step 3: Remove all cabling (RF, high speed data, etc) from the radio modem unit to bereplaced, then extract the radio modem unit from the rack.

To fit a replacement radio modem unit, install the radio modem unit in the rack, and then:

Step 1: Fit all the cabling removed from the original radio modem unit to the replacementradio modem unit.

Step 2: Connect the DC supply and power up the radio modem unit.

Step 3: Use DXR net to set the switching mode of the terminal back to “Automatic”.

Installing the Antenna

General The antenna manufacturer will supply mounting instructions with the antenna. You shouldfollow these instructions carefully, in conjunction with the procedure described below, to ensurethe antenna is correctly and securely assembled and mounted.

Lightning protection must be incorporated into the antenna system. For moreinformation, please contact Digital Microwave Corporation CustomerServices, using the contact details contained in the Preface to this manual.



ProcedureStep 1: Follow the assembly instructions supplied by the manufacturer of the connector to fit

and terminate an N-Type male connector to the antenna feeder at the terminal end.

Step 2: Follow the assembly instructions supplied by the manufacturer of the connector to fitand terminate an appropriate N-Type connector to the antenna feeder at the antennaend.

Step 3: Firmly fasten the N-Type connector and feeder at the antenna end to the antenna.Secure the feeder cable at regular intervals with cable ties or cable hangers.

Step 4: Waterproof the entire connector and antenna socket with several layers of self-amalgamating tape, grease impregnated woven tape, or other approved waterproofingproduct.

Step 5: Firmly fasten the N-Type male connector and feeder at the terminal end to the N-Typefemale connector on the terminal. When using larger sized HeliaxTM feeders, a shortRG-213/U jumper cable should be used between the feeder and the terminal.

Note: During commissioning it will be necessary to align the antenna for optimumperformance. For more information see Section 6 of this Manual.

G.703 Termination The G.703 input/output circuits terminate on the front panel of a non-protected DXR 100 andon the front panel of the protection switch used with the Protected or Upgradeable DXR 100.The digital trunk interface provides G.703 access to the terminal, via the Interface 1 DB-25female connector.

The standard interface impedance is 120 ohm balanced. Digital Microwave Corporationprovides an interface cable. Refer to the following table and Appendix D for pin-out details.




DB-25 Tributary Identifier 120 ohm 75 ohm Pin Name Pair/Colour Name 1 Ground Shield Shield Shield

16 3 4

Trib 1 Out

Gnd Out Tip Out Ring

Drain Black Red

Braid Tip

Braid 19 6 7

Trib 2 Out


Drain Black White

Braid Tip

Braid 22 9

10

Trib 3 Out


Drain Black Green

Braid Tip

Braid 25 12 13

Trib 4 Out


Drain Black Blue

Braid Tip

Braid 14 15 2

Trib 1 In

InTip In Ring

Gnd

Black Yellow Drain

Braid Tip

Braid 17 18 5

Trib 2 In

InTip In Ring

Gnd

Black Brown Drain

Braid Tip

Braid 20 21 8

Trib 3 In

InTip In Ring

Gnd

Black Orange Drain

Braid Tip

Braid 23 24 11

Trib 4 In

InTip In Ring

Gnd

Red White Drain

Braid Tip

Braid Shell Chassis Shield Shield Shield

The interface cable comes in either 2 m or 5 m lengths (P/N 100 DTI-120-2/5) with a freeunterminated end. The multi-stranded twisted pair wires are suitable for connecting to a digitaldistribution frame (DDF) using KroneTM insulation displacement connections or other suitabletermination.

Standard E1 interface is 120 ohm. You may configure the optional 75 ohm interface in twoways:

1. External balun transformers with optional BNC Panel.

2. Software configuration of Interface 1 connection for 75 ohm.

• Optional cable assembly provides BNC connection, with built-in balun to convert 120 to75 ohm input (output impedance configurable by software)

• Optional BNC panel is available for the same purpose

Note: Software configuration can only change output impedance from 120 to 75 ohm.



Alarm Termination For an unprotected DXR 100, all alarm circuits terminate on the DB-15 alarm connector on thefront panel. For a protected or upgradeable DXR 100, all alarm circuits terminate on the frontpanel of the protection switch. The connector provides an interface for connecting two alarmrelay outputs. They are ‘relay contact to ground’ type, and you may configure them as eithernormally open or normally closed using DXR NET.

The alarm relay outputs allow an internal DXR alarm to provide an external alarm to thenetwork operator’s existing alarm system via relay contact closure or opening.

The connector also provides termination for two alarm inputs. These are optically isolated andmay be used in either polarity configuration. Maximum input is 48 VDC, minimum is 20 VDCand minimum on state current is 2 mA. Refer to the following table and Appendix D for pin-outdetails.

DB15 Pin Connection Description 1,2 Alarm input 1 3,4 Alarm input 2. 5,6 Alarm relay o/p 2 7,8 Alarm relay o/p 1

9 -15 Not used.

Connecting the Standard EOW Option

Handset Connection The DXR 100 EOW option provides a handset connection with general all station callingcapability. It can be directly connected to a DXR 200 EOW 1 module via the co-directionalports and is compatible in general call mode.

The EOW handset terminates at the HANDSET 4 pin RJ11 jack in the front panel of theterminal. Refer to the following table and Appendix D for pin-out details.

Note: Only Digital Microwave Corporation supplied handsets or compatible units should beused.

RJ 11 Pin Connection 1 Microphone 2 Microphone return 3 Earphone 4 Earphone return

• The earphone cartridge should have >120 ohm impedance

• The microphone should generate a 150 mV RMS level

• The handset has a normally open push to talk (PTT) switch in series with the microphonecartridge. You must depress this to talk over the orderwire

• To initiate general ‘all-station’ calling press the front panel call button. Release to finishcalling

Please refer to Figures 4 and 5 on pages 5 and 7.




Connecting the 4-wire EOW OptionThe DXR 100 4-wire EOW adaptor option provides a 600 ohm analogue 4-wire interface viathe interface 2 (DB25 female) or interface 3 (DB9 female) front panel connector of the DXR100.

Note: If the data service channel has been installed in the terminal, access is via the interface2 connector. If not, access is via interface 3 connector.

Refer to the following table and Appendix D for pin-out details.

Function Interface 2 DB25 (female) Interface 3 DB9 (female)Send Audio 4 7Send Audio 3 2Receive Audio 8 1Receive Audio 6 6Press-to-talk 5 8Press-to-talk 2 3Calling Alert NO 22 9Calling Alert NC 20 4Ground 7 5

Please refer to the Figures 4 and 5 on pages 5 and 7.

Note: On the 4-wire EOW adaptor, alerting is indicated by applying 5 to 12 V DC to thepress-to-call input, and is indicated by a relay contact input (calling alert). Duringtalking, 5 to 12 V DC must be applied to the press-to-talk input and removed forlistening. The interface ground is isolated from the ground of the DXR 100.

EOW G.703 64 kbps Co-directional ConnectionThere are two 120 ohm G.703 64 kbps co-directional ports for directly connecting EOWstogether at a local DXR 100 site and connecting to DXR 200 terminals fitted with the EOWOrderwire option.

The following tables show how to connect local DXR 100s, with the EOW OUT on oneterminal connected to the EOW IN on the other terminal.

EOW IN EOW OUTTx a 4 Tx a 1Tx b 9 Tx b 6Rx a 1 Rx a 4Rx b 6 Rx b 9



BranchingThis is used at sites with more than two co-located DXR 100s. The branching option allowsyou to use both the EOW IN and EOW OUT connections on one DXR 100 terminal forconfiguration in a star network.

Figure 11 shows connection of the branching orderwire:

9 way male-female twisted pair sheilded cable(DMC P/N 100 EOW\NMS CABLE)

Figure 11: DXR 100 Orderwire Connection

Note: Power and traffic connections are not shown.

Data Service ChannelDXR 100 has the facility for one data service channel per radio. The data service channelutilises the radio spare overhead, so it does not affect the specified capacity of the radio. Thereare two available options, depending on the data rate requirements.

Note: The data service channel should be specified when purchasing the radio, as it isusually fitted at the factory. However, it can be installed in equipment in the field by aqualified Digital Microwave Corporation customer services representative.

For a non-protected DXR terminal, the data service channel option card is accessed via theinterface 3 DB9 (female) connector on the DXR 100 front panel. For a protected orupgradeable DXR terminal, the data service channel option card is accessed via the protectionswitch front panel. Refer to the following table and Appendix D for pin-out details.




Function Interface 3 DB9 (female)GND 5RD 2TD 3RTS 7CTS 8DSR 6DCD 1DTR 4RI 9F GND Shield

There are two available data service channel options, Data 1 and Data 2.

Data 1The data rates of the Data 1 data service channel are as follows:

Interface Data Rates1E1, 2E1 Multiple hops 1200 bps

Single hops 2400 bps4E1 Multiple hops 2400 bps

Single hops 4800 bps

Note: Transparent baud rate, parity and data length within specified rates.

Data 2The baud rate, parity, and bit length for the Data 2 data service channel are configurable for allcapacities (1E1, 2E1, 4E1) by DIP switch settings. The baud rate settings are as follows:

Switch Baud Rates4 5 6

On On On 19,200On On Off 9,600On Off On 4,800On Off Off 2,400Off On On 1,200



The parity and bit length settings are as follows:

Switch Parity No of Bits1 2 3

On On On None 8Off On On Odd 8Off Off On Even 8On On Off None 7Off On Off Odd 7Off Off Off Even 7

The above DIP switch settings should be specified when purchasing the radio,as they are usually set in the factory. Changing the settings in equipment in thefield can only be carried out by a qualified Digital Microwave Corporationcustomer services representative. This is because changing the settingsrequires removing the daughter board from the interface card. Failure toobserve this restriction will void the two year warranty on the equipment.

DC Power Connection

General

Do not apply power to DXR 100 until you have completed the entireinstallation.

The power is terminated on the front panel of DXR 100 via the DB3W3 POWER connector.Three large high current contacts are used for the DC power input. Refer to the following tableand Appendix D for recommended wire gauge and pin-out details.

The recommended wire gauge to connect DXR 100 to the power supply depends on the distancebetween the supply and terminal. Guidelines for the maximum cable run using copper wire areshown below:

48 Volt Supply 24 Volt SupplyWire Size Metres

(Maximum)Feet (Maximum) Metres

(Maximum)Feet

(Maximum)1.5 mm2 (16

AWG)2.5 9 1.3 4.5

2.5 mm2 (13AWG)

5.3 17 2.5 8.5

4 mm2 (11AWG)

8.3 27 4 13.5

6 mm2 (10 AWG) 12.3 40 6 20

We recommend that you use 7 strand cable with tough PVC insulation and that you complywith the accepted practice of using black or blue cable for negative, red cable for positive andgreen cable for earth.

Note: If a wire that is a heavier gauge than 6 mm2 is required, terminate the power leads at a




terminal block near the terminal and complete the connection from the terminal blockto the terminal using a maximum of 6 mm cable.

Pin Out Information

DB3 Pin Power Input Cable ColoursA1 Positive DC input RedA2 Chassis Ground - can be strapped to A1 or

A3 for positive or negative ground systems.Green

A3 Negative DC input Black

Figure 12 shows the power connector, viewed from the front of DXR 100.

Figure 12: DXR 100 - DC Power Connector

ProcedureStep 1: If the power is already connected to the power source, ensure the power source is

turned OFF or the fuse is removed.

Step 2: Strip back the insulation on the power leads to approximately 6 mm.

Step 3: Using a soldering iron and solder, tin the inside of the solder buckets of the individuallarge power contacts provided with the power connector and tin the ends of thestripped wires.

Step 4: Using a soldering iron, heat the power contact to melt the solder in the solder bucketand insert the pre-tinned wire to fuse with the molten solder. Add extra solder to thejoint to fill the bucket and complete the joint. Ensure you do not to move the wirewhile the solder is cooling to avoid weakening and making the joint ‘dry’.

Step 5: Insert the terminated power pins into the correct locations in the housing, ensuringthey ‘snap’ home.

Step 6: Fit the connector backshell, ensuring the cables are secured in the cable clamp toavoid stress on the soldered joints from cable movement.

Step 7: Fit the terminated connector onto DXR 100 securing it firmly to the terminal with thelocking screws in the connector housing.

Step 8: Apply power to the DXR 100.

Using DXR NET to install a DXR 100


5 Using DXR NET to install a DXR 100

IntroductionThis section describes the procedures for loading the configuration in to the terminal. Itassumes the radios have the correct frequency loaded, and that the network blueprint (if used)contains the complete and correct configuration data.

DXR NET allows the planning engineer to create the network in a "master" network blueprint,which contains all the information required to configure the terminals. The blueprint is createdwithin DXR NET, and used at the time of installation to load the terminal. Any changes made inthe field can be saved in the blueprint (called a "field" blueprint), and returned to the engineer oroperations centre, allowing them to have an accurate blueprint that can be used for future visitsto the site, or from the central office. A blueprint made from field blueprints is called a"custom" blueprint, as it reflects the unique, real, network that is installed.

DXR NET does not require that a blueprint be created before the site is installed. Theconfiguration entered at the site can be saved, and sent to the central office for creating ablueprint at a later time, or the central office can read the configuration from the terminal,knowing only the location, IP address and terminal type.

For information on IP addressing, routing tables and IP masks, please refer to the DXR NET

Installation and Operation manual.

Installing a DXR 100 with NMS from new, using a master blueprintThis section covers the operations you should take to configure a new terminal as part of anetwork. This procedures covers working from a master network blueprint. You should savethe "field" blueprint to be used in a "custom" blueprint, for later use.

Basic outline of operations

• The radio has been installed, connected to power and the antenna, and is operational.

• The DXR NET PC is connected to the front panel.

• The factory IP address is changed to the new desired address.

• Open the master blueprint. Connect to terminal.

• The software is allowed to find the terminal on the blueprint, and then you can load theconfiguration to the radio.

• If changes are made to the terminal, these are saved in the blueprint for later use.

If this is the second terminal of the link, and the routing table is correct, the link should beoperational, and the far end should be discovered and checked for alarms.




Configuring the terminalStep 1: From the desktop, run DXR NET.

Step 2: Select the Configuration workspace from the Workspace Selection screen.

Step 3: Select the Connect button from the DXR NET toolbar. DXR NET will perform autodiscovery, and a blueprint of the terminal you are attached to will appear in theExplorer Tree window.

Step 4: Change the terminal IP address. Select the Configuration, IP Address Table and selectthe terminal. Double click on the IP address, and change it to the desired address.Click OK to leave the page.

Step 5: Select the Write to Radio button from the DXR NET toolbar. DXR NET will open awindow asking to proceed. Ensure the Check Target IP address is correct and click onthe tick box alongside the address. Hit OK to write the new address to the terminal.

Step 6: Once the new address has been written, the terminal will drop the connection to theDXR NET PC, and will ask if you want to reconnect. Select No.

Step 7: Open the "master" blueprint now.

Step 8: Select the Connect button from the DXR NET toolbar. DXR NET will mark the correctterminal on the Explorer tree with a small plug symbol if you have the correctblueprint loaded. If this happens, you can proceed to load the configuration to theterminal. If you receive a warning that the terminal cannot be found, proceed with theauto discovery, which is back to step 3, and again set the IP address of the terminal.It may be that the blueprint does not contain a terminal with the IP address that wasset in the terminal in step 4. If an unexpected terminal is given the plug icon in theexplorer tree, you should correct this before proceeding. Loading an incorrectconfiguration into the terminal will cause the link to not operate due to the frequencyrequirements, or using the wrong IP address will cause problems with routing NMS inthe network.

Step 9: Select the Write to radio button now, and select start. When the write has competed,press OK.

Step 10: Make any changes to the configuration that are required, and write them to the radio.Save the blueprint and export the configuration if this is required. This blueprint isknown as the "field blueprint".

Step 11: When you are finished viewing or modifying the network, click on the Disconnectbutton in the DXR NET toolbar, then select Exit from the File menu. Remove thecable from the terminal before powering off the PC.



Installing a DXR 100 with NMS from new, working from config sheetsThis section covers the operations you should take to configure a new terminal as part of anetwork. This procedures covers working connecting to the radio, and configuring the radiofrom configuration sheets. You should save the "field" blueprint to be used in a "custom"blueprint, for later use.




• The factory IP address is changed to the desired address.

• Connect to terminal.

• The software is will autodiscover the terminal, and then you can enter the configuration datainto DXR NET. Write to the terminal when complete.

• Save the blueprint for future use.

If this is the second terminal of the link, and the routing table is correct, the link should beoperational, and the far end should be discovered and checked for alarms.



Step 3: Select the Connect button from the DXR NET toolbar. DXR NET will perform autodiscovery, and the blueprint of the terminal you are attached to will appear in theExplorer Tree window.

Step 4: Change the terminal IP address. Select the Configuration, IP Address Table and selectthe terminal. Double click on the IP address, and change it to the desired address.Click OK to leave the page.

Step 5: Select the Write to Radio button from the DXR NET toolbar. DXR NET will open awindow asking to proceed. Ensure the Check Target IP address is correct and click onthe tick box alongside the address. Hit OK to write the new address to the terminal.

Step 6: Once the new address has been written, the terminal will drop the connection to theDXR NET PC, and will ask if you want to reconnect. Wait 15 seconds and then selectYes.

Step 7: DXR NET will perform auto discovery, and the blueprint of the terminal you areattached to will appear in the Explorer Tree window.

Step 8: Select the Read from terminal. This will ensure that the correct frequencies are used.The frequencies are factory set and must match the far end of the link and theduplexer tuning.




Step 9: Work through the tabbed pages and enter the data as required. Commit to changesafter each page. Ensure that the correct frequencies are entered.

Step 10: Select the Write to radio button now, and select start. When the write has completed,press OK.

Step 11: Save the blueprint and export the configuration if this is required. This blueprint isknown as the "field blueprint".

Step 12: When you are finished viewing or modifying the network, click on the Disconnectbutton in the DXR NET toolbar, then select Exit from the File. Remove the cable fromthe terminal before powering off the PC.

Installing a DXR 100 without NMS from new, using a master blueprintThis section covers the operations you should take to configure a new terminal as part of anetwork. This procedures covers working from a master network blueprint. You should savethe "field" blueprint to be used in a "custom" blueprint, for later use.




• Open the master blueprint. Connect to terminal.

• The software is allowed to find the terminal on the blueprint, and then you can load theconfiguration to the radio.

• If changes are made to the terminal, these are saved in the blueprint for later use.

If this is the second terminal of the link, the link should be operational, and the far end shouldbe discovered and checked for alarms to confirm correct operation.



Step 3: Select the Connect button from the DXR NET toolbar. DXR NET will perform autodiscovery. If the current terminal name is not found in the blueprint, you will beasked to select the termimnal from a list. Once this is done, the terminal you areattached to will appear in the Explorer Tree window with a small plug symbol.



Step 4: Select the Write to Radio button from the DXR NET toolbar. DXR NET will open awindow asking to proceed. Ensure that you have the correct terminal selected, and hitOK to write to the terminal. If the name in the blueprint does not match the name inthe terminal, you will need select the correct terminal before you can write to it.

Step 5: Make any changes to the configuration that are required, and write them to the radio.Make any changes to the configuration that are required, and write them to theterminal.


Step 7: When you are finished viewing or modifying the network, click on the Disconnectbutton in the DXR NET toolbar, then select Exit from the File menu. Remove the cablefrom the terminal before powering off the PC.

Installing a DXR 100 without NMS from new, working from config sheetsThis section covers the operations you should take to configure a new terminal as part of anetwork. This procedures covers working connecting to the terminal, and configuring theterminal from configuration sheets. You should save the "field" blueprint to be used in a"custom" blueprint, for later use.


• The terminal has been installed, connected to power and the antenna, and is operational.


• Connect to terminal.

• The software is will auto-discover the terminal, and then you can enter the configurationdata into DXR NET. Write to the terminal when complete.

• Save the blueprint for future use.

• If this is the second terminal of the link, the link should be operational, and the far endshould be discovered and checked for alarms.



Step 3: Select the Connect button from the DXR NET toolbar. DXR NET will perform autodiscovery. The terminal you are attached to will appear in the Explorer Tree windowwith a small plug symbol.

Step 4: Select the Read from terminal. This will ensure that the correct frequencies are used.The frequencies are factory set and must match the far end of the link and theduplexer tuning.




Step 5: Work through the tabbed pages and enter the data as required. Commit to changesafter each page. Ensure that the correct frequencies are entered.

Step 6: Select the Write to Terminal button from the DXR NET toolbar. DXR NET will open awindow asking to proceed. Ensure that you have the correct terminal selected, and hitOK to write to the terminal. If you have changed the terminal name, you will needselect the correct terminal before you can write to it.

Step 7: Make any changes to the configuration that are required, and write them to theterminal. Make any changes to the configuration that are required, and write them tothe terminal.


Step 9: When you are finished viewing or modifying the network, click on the Disconnectbutton in the DXR NET toolbar, then select Exit from the File menu. Remove the cablefrom the terminal before powering off the PC.

You are now returned to the PC desktop.

Building a custom network blueprintAs terminals are installed and become operational, it is useful to have an updated blueprint atthe central office and in the operations centre. This blueprint should reflect the latestconfiguration data, and any operational data about the network. Engineers travelling to sitesshould have this blueprint with them , in case a terminal needs to be replaced. This blueprint isknown as the "custom" blueprint, and should be created by importing confgiuration files,created from the "field" blueprints.

The network operations centre can discover the terminal configurations if the terminal type,physical connections and IP address are known, and create a "custom" blueprint by reading thedata directly from the terminals.

Great care should be taken before writing any changes to a terminal, that the parameters arecorrect. Writing incorrect frequencies or capacities back to the terminal will result in the loss ofthe operational link, which could require on-site actions to recover.

DXR NET Local Maintenance Tool (LMT)


6 DXR NET Local Maintenance Tool (LMT)

IntroductionThis document provides the information needed to install the DXR NET Local MaintenanceTool (LMT) on your PC hard drive, and how to use it to carry out simple checks andmodifications to the setup of a DXR 100 link.

Note 1: This document describes Version 1.9 of the DXR NET LMT .

Note 2: It is assumed that the operations described in this document are carried out when thePC is directly connected to one of the link terminals.

What is the DXR NET Local Maintenance Tool?

GeneralDXR NET is a software package that provides a configuration, commissioning, maintenance andadministration tool for DXR terminal networks. After you have loaded DXR NET on a PC, youcan then use the PC to manage the terminals and other network elements in the network.

DXR NET is offered in three levels, each offering a different set of functions:

• the Local Maintenance Tool (LMT), for use in the configuring, commissioning andmaintenance of individual terminal links

• the Network Maintenance Tool (NMT), for use in the configuring, commissioning andmaintenance of DXR terminal networks

• the Element Manager (EM), for use in Network Operation Centres (NOC)

This document covers how the LMT can be used with a DXR 100 terminal link.

Note: Both the NMT and EM require a hardware key or “dongle”, and the EM also requiresa software key which determines the maximum size of the network it can be usedwith. For further details, refer to the DXR NET Installation and User Manual.

The LMT enables the user to view or modify the configuration data of a DXR 100 terminallink. After connecting the PC running the LMT to a DXR 100 terminal, the LMT can then beused to setup, check, or change the configuration of the attached terminal. It can also be used tocarry out the same range of functions on the terminal at the other end of the link (the remoteterminal), if the link is operational.




Note: This document only describes the DXR NET LMT to the level required to use it with aDXR 100 link. It does not contain full descriptions of all the features available in thetool.

Figure 13: DXR NET LMT GUI - typical display

You interface with the link terminals via the tool GUI. This is divided into a left-hand and aright-hand pane. The left-hand pane shows a tree view of the link in the Windows Explorerformat.

Note: In the left-hand pane, for a terminal without a NMS daughter board, the icon for theterminal connected to the PC is shown with a “plug” to distinguish it from the remoteterminal. For a terminal with a NMS daughter board, the icon is shown on the NMSboard icon.

The right-hand pane displays one of the following workspaces:

• Configuration Workspace. The Configuration Workspace is used to view and modify theconfiguration data of the attached terminal, and of the remote terminal if the DXR 100 linkis operational

• Commissioning Workspace. The Commissioning Workspace contains the basic fault andperformance monitoring features used to commission a DXR 100 link

• Maintenance Workspace. The Maintenance Workspace contains the detailed fault andperformance monitoring features used to carry out diagnostics on a DXR 100 link



The current workspace is selected at startup by clicking on the relevant button in the WorkspaceSelection box, or after startup by clicking the relevant icon in the toolbar. The normal sequenceof selecting the workspaces during an installation would be:

• the Configuration Workspace, to either load configuration details to the link terminals froma stored file, or to make and save changes to the configuration details

• the Commissioning Workspace, to see that the link is functioning properly after theconfiguration data has been loaded or changed

• the Maintenance Workspace, to view the Constellation Diagrams for the terminals, or trackdown, and if possible, diagnose any present alarms

RequirementsThe requirements for the DXR NET LMT can be divided into the following:

• Hardware

• Software

• User

Hardware Requirements The minimum hardware configuration for the DXR NET LMT is as follows:

• 100 MHz Pentium Processor

• 64 MB RAM

• 50 MB free hard disk space

• 3.5” floppy drive

• Serial COM port (COM1 or COM2), for local connection to DXR 100 terminal

• 800 x 600 resolution, 256 colour display (16 bit colour recommended)

• SVGA Display Adaptor Card

• 2 or 3-button Mouse

• 101-key US keyboard

Note: The tool only needs 10 MB free hard disk space to install, but storage of configurationdata will take more.

Software Requirements To run the DXR NET LMT, a PC must have

• Microsoft Windows 95 OEM Service Release (OSR) 2 operating system (or later)

• TCP/IP configured

• WinSock2 Installed (Windows 95 only)




Note 1: Windows 95 users should check that they are running the OSR 2 version of theoperating system. The operating system version is detailed in the System Propertieswindow, which can be accessed via the System icon in the Control Panel window. Theletter at the end of the release number must be “B” or later.

Windows 95 users will also need to install the a more recent copy the Winsock services.The file is supplied in the DXNET/DRIVERS directory, called W95ws2sw.exe.Running this file installs an updated version of the services, allowing DXR net towork correctly.

Note 2: The hardware requirements detailed above are for the tool only, and do not take intoaccount any requirements of any other software. You should check that your PC hasthe capacity to operate both the tool and any other required software before installingthe tool.

User Requirements To obtain the full benefit of the DXR NET LMT features, and to use this document, you mustbe familiar with the features and terminology of the Microsoft Windows 95 operating system(or later). This should include installing software from either 3.5 inch floppy disks or CD. Youmust also be familiar with the terminology associated with the DXR 100 system.

Preparing your PC to use the DXR NET LMT After ensuring that you have fulfilled all the conditions detailed under Requirements, you arenow ready to prepare your PC to use the DXR NET LMT. This entails:

• installing the tool on your PC

• creating a shortcut to the tool on your PC screen (optional)

The DXR NET LMT is installed from either 3.5 inch floppy disks or CD.

Note: If you received the DXR net LMT on CD, and require disks, or vice-versa, pleasecontact your local Digital Microwave Corporation agent, or the Customer ServicesDepartment of the Digital Microwave Corporation Long Haul Division (refer to thePreface).

Installing the DXR NET LMT from floppy disk The installation is carried out using the DXR NET InstallShield utility. The procedure is asfollows:

Note: Digital Microwave Corporation advises that you use the default locations and foldersset by InstallShield, but take careful note of the destination drive for the DMCprogram folder and the COM port selected to connect your PC to the DXR 100terminal.

Step 1: From the desktop, insert Disk 1 of the installation disks into the 3.5” floppy drive.

Step 2: Run the setup.exe file on Disk 1. This will run InstallShield, which will install the toolon your PC.



Step 3: Follow the screen prompts. These will be either requests to insert disks, or whetheryou wish to accept or change the InstallShield default settings.

Step 4: Click on the Next button to move to the next screen, until the installation procedure iscomplete.

Step 5: Remove the last installation disk from your PC, and store the disks in a safe place.

The installation procedure is now complete.

Installing the DXR NET LMT from CD As for from floppy disk, the installation is carried out using the DXR NET InstallShield utility.The procedure is as follows:

Note: Digital Microwave Corporation advises that you use the default locations and foldersset by InstallShield, but take careful note of the destination drive for the DMCprogram folder and the COM port selected to connect your PC to the DXR 100terminal.

Step 1: From the desktop, insert the CD into the CD drive.

Step 2: Run the setup.exe file. This will run InstallShield, which will install the tool on yourPC.

Step 3: Follow the screen prompts. These will be either requests to insert disks, or whetheryou wish to accept or change the InstallShield default settings.

Step 4: Click on the Next button to move to the next screen, until the installation procedure iscomplete.

Step 5: Remove the CD from your PC, and store in a safe place.

The installation procedure is now complete.

Connecting your PC to the DXR 100 terminal Although the DXR NET LMT can be used to design a link configuration while your PC is notconnected to a DXR 100 terminal, the PC will need to be connected to a terminal to view ormodify the configuration data of an existing link. This connection is made with the suppliedcable, and runs from the selected COM port on your PC to the connector labelled “V.24” on thefront panel of the terminal. Refer to Figures 4 and 5 for the connector positions.

Although the direct connection is between the same physical connectors on the terminal and PC,the type of interface depends on whether the terminal has a NMS daughter board or not.

Always remove the cable from the terminal before powering off the PC. Failure to do mayresult in the terminal being issued a reset command, which will cause an interruption to trafficon the link.




Selecting the terminal interface on your PC There are two mutually exclusive interface options for connecting your PC to the DXR 100terminal:

• for terminals without the optional NMS daughterboard, you select the COM port option inthe Communications Setup box

• for terminals with the optional NMS daughterboard, you select the NMS option in theCommunications Setup box

Note: You must use the correct option for your terminal, otherwise the PC and the terminalwill not be able to communicate.

To connect to a terminal without the NMS daughterboard, proceed as follows:

Step 1: Run the DXR NET LMT from the desktop.

Step 2: Select the Configuration Workspace from the Workspace Selection window.

Step 3: Select the Communication Setup option from the drop-down Tools menu.

Step 4: In the Communications Setup window, ensure that the Terminal Connection radiobutton is selected, and the correct COM port is displayed in the Scroll Box.

Step 5: To leave the Communications Setup window without making any changes, select theCancel button.

Step 6: To save the current settings in the Communications Setup window as the defaultcommunication settings, (so that DXR NET always opens with these communicationsettings), select Save Settings button, then the OK button. To use the current settingswithout making them the default settings, only select the OK button.

The COM port will now change to your selection.

To connect to a terminal with the NMS option, proceed as follows:

Note: To use the NMS option, Windows® “Dial-up” Networking must be enabled on yourPC.

Step 1: Run the DXR NET LMT from the desktop.

Step 2: Select the Configuration Workspace from the Workspace Selection window.

Step 3: Select the Communication Setup option from the drop-down Tools menu.

Step 4: In the Communications Setup window, ensure that the NMS Connection radio buttonis selected, and the correct dial-up adaptor is displayed in the Scroll Box.

Step 5: To leave the Communications Setup window without making any changes, select theCancel button.



Step 6: To save the current settings in the Communications Setup window as the defaultcommunication settings, (so that DXR NET always opens with these communicationsettings), select Save Settings button, then the OK button. To use the current settingswithout making them the default settings, only select the OK button.

The dial-up adaptor name relates to the name you choose when you installed the Windows Dial-up adaptor, as described in Appendix E.

Using the DXR NET LMT The DXR NET LMT functions are divided among the following:

• the Explorer Tree functions

• the Configuration Workspace functions

• the Commissioning Workspace functions

• the Maintenance Workspace functions

Using the Explorer Tree functions The Explorer Tree can be used to carry out the following functions:

• creating network blueprints

• loading, modifying and saving network blueprints from and to file

• autodiscovery of a network

• importing, modifying and exporting configuration files (these would be carried out as partof the above three functions)

Creating network blueprints In order to have a network commissioned in an orderly manner, DXR NET introduces theconcept of a network blueprint. This enables the network designer to build a model of thenetwork in the DXR NET software, in advance, and then as each terminal is configured, theinstallation teams use a common blueprint for downloading configurations to the terminals. Thishelps to avoid site configuration errors, and minimises configuration work in the field.

If only one link is to be used, the blueprint is simple, but for a large and complicated network,this proves to be a very valuable feature.

The blueprint also provides a method of keeping all terminal configurations in one place. If youmake changes to a terminal configuration, by saving the changes to the blueprint, and thensaving the blueprint, these changes will be know to you at all times, enabling you to check thesesettings at any time. Individual terminal configurations can be imported and exported, allowingthis master blueprint to be kept up to date (see Loading, Modifying and Saving ConfigurationFiles).

Note: When configuring a terminal without NMS from the blueprint, ensure that you haveselected the correct terminal from the blueprint, on the explorer tree on the left of theDXR net screen, to ensure that the correct data is loaded into the terminal.




After the blueprint has been created, you can save it, connect your PC to the network and loadthe saved blueprint. DXR NET will try to find the terminal in the blueprint, and you candownload the complete configuration data to the terminal.. The blueprint is saved in a file with afile type of ".net"

Note: We advise you create the blueprint while working offline, then use Autodiscovery toconnect to the actual network.

Ways to use the network blueprint A suggested method of using network blueprints is to create a "master" blueprint before theequipment is installed, and use this to load the configuration to the terminal. This would beknown as the Master blueprint. The engineer in the field will use this, and any changes aresaved. This new blueprint is a "field" blueprint.

Note: DXR NET does not use these terms- they are created as a procedural method to reduceerrors in network implementations and management.

After installation, the field blueprint can be sent to the central office and the network operationscentre. At the network operations centre, they can build a new blueprint, based on the fieldblueprints they have been sent. This will be called the "custom" blueprint, and will reflect theactual configuration of the terminals that are operational. This "custom" blueprint can be usedby the maintenance staff on site visits, to ensure that they are using a correct, and working,blueprint configuration for each terminal.

You can create a Network Blueprint with the LMT using the following procedure:

Note 1: We advise you create the blueprint while working offline, then use Autodiscoverywhen connecting to the actual network (see Autodiscovery of a Network).

Note 2: The Configuration Workspace is the only workspace that can be used while workingoff-line.

Note 3: In the Explorer Tree hierarchy, NMS boards are under the DXR 100 terminals thatcontain them.

ProcedureStep 1: From the desktop, run DXR NET.

Step 2: Click on the Configuration Workspace button from the Workspace Selection screen.

Step 3: The Explorer Tree pane will have the Network icon followed by “Network” at the topof the column. If you want to give the Network a name, right-click on “Network”,select Rename from the drop-down menu, type in the name of your choice, then press<Enter>.

Step 4: To add a site to the network, right-click on the Network icon in the Explorer Treepane, then select Add Site from the drop-down menu. The Site icon will appear in thepane, followed by “Site n”.



Step 5: Select the Site icon in the Explorer tree, then enter the Site Name, the Description andContact Details (for the person responsible for the site) into the relevant fields in theSite Information page displayed in the workspace. When you are satisfied with thedetails, click on the Commit button in the Toolbar.

Step 6: Repeat Steps 4 and 5 for any other sites.

Step 7: To add a DXR 100 terminal to a site, right-click on the Site icon in the Explorer Treepane, then select Add Network Element. In the Add Network Element window, selectthe element you want to add to the site, then click OK. If the terminal has NMSinstalled, ensure the NMS option checkbox is ticked. The icon for the element willappear in the Explorer Tree pane, followed by “Terminal n”. If you want to give theelement a name, right-click on “Terminal n”, select Rename from the drop-downmenu, type in the name of your choice, then press <Enter>.

Step 8: To import an already saved configuration file for a DXR 100 terminal to a site, right-click on the Site icon in the Explorer Tree pane, then select Import Network Element.In the Import Configuration window, select the previously saved configuration file forthe element, then click Open. The icon for the element will appear listed under the sitein the Explorer Tree pane, followed by the file name.

Step 9: Select the DXR 100 terminal you have just added or imported, then go through eachof the available tabbed pages in the Configuration workspace. Either accept thedisplayed parameter values or enter the values you require. Refer to Using theConfiguration Workspace for details. Select the Commit button from the DXR NET

toolbar to save any changes you make to the blueprint.

Step 10: If the element you have added has an NMS board, then select the board and gothrough each of the available tabbed pages in the Configuration workspace. You canchange the values you require. Refer to Using the Configuration Workspace fordetails. Select the Commit button from the DXR NET toolbar to save any changes youmake to the blueprint.

Step 11: If you have made changes in any of the tabbed pages in the Configuration workspace,right-click on the element icon in the Explorer Tree pane, then select Export NetworkElement. In the Export Configuration window, select the directory you want to savethe configuration file to and the name you want to save it under, then click Save.

Step 12: Repeat Steps 7 to 11 as required for the terminals at any other sites.

Step 13: If the terminals you are configuring have NMS boards, you will need to add their IPaddresses to the IP table, as described in "Setting the NMS Board IP Address" onpage 62

Step 14: When you have completed your design, select the File menu in the DXR NET toolbar,then Save from the drop-down menu to save the data for future reference.

Step 15: When you are finished using the tool, select Exit from the File menu.

Loading, modifying and saving network blueprints from and to file You would load a Network Blueprint from a file to make significant changes to the network




configuration offline, and save the changes to the network later. You load a Network Blueprintusing the following procedure.

ProcedureStep 1: From the desktop, run the DXR NET LMT.


Step 3: Select Open from the File menu, and select the network blueprint file. The blueprintnetwork hierarchy will now appear in the Explorer Tree pane, with the Networksymbol followed by any name you assigned to the network. The name will also appearin the DXR NET title bar.

Step 4: To change the network name, right-click on the Network icon in the Explorer Treepane, select Rename from the drop-down menu, type in the new name, and then press<Enter>. The new name will appear following the Network icon.

Step 5: To change a site name, right-click on the Site icon in the Explorer Tree pane, selectRename from the drop-down menu, type in the new name, and then press <Enter>.The new name will appear following the Site icon.

Step 6: To remove a site from the network, right-click on the Site icon in the Explorer Treepane, then select Delete from the drop-down menu. Confirm you want to remove thesite and the network elements it holds by clicking on Yes in the Delete Item box.

Step 7: To add a new site to the network, right-click on the Network icon in the Explorer Treepane, then select Add Site from the drop-down menu. The Site icon will appear in thepane, followed by “Site n”. Enter the Site Name, the Description and Contact Details(for the person responsible for the site) into the relevant fields in the Site Informationpage displayed in the workspace. When you are satisfied with the details, click on theCommit button in the Toolbar.

Step 8: To change the name of a terminal or an NMS board, right-click on the relevant icon inthe Explorer Tree pane, select Rename from the drop-down menu, type in the newname, and then press <Enter>. The new name will appear following the icon.

Step 9: To remove a terminal or an NMS board from a site, right-click on the relevant icon inthe Explorer Tree pane, then select Delete from the drop-down menu. Confirm youwant to remove the item by clicking on Yes in the Delete Item box.

Step 10: To add a DXR 100 terminal to a site, right-click on the Site icon in the Explorer Treepane, then select Add Network Element. In the Add Network Element window, selectthe terminal you want to add to the site, then click OK. If the DXR 100 terminal hasan NMS board, ensure that the NMS option checkbox is ticked. The icon for theterminal will appear in the Explorer Tree pane, followed by “Terminal n”. The iconfor any NMS board (if present) will appear under the terminal icon.

Step 11: To import a DXR 100 terminal to a site, right-click on the Site icon in the ExplorerTree pane, then select Import Network Element. In the Import Configuration window,select the previously saved configuration file for the terminal, then click Open. The



icon for the terminal will appear listed under the site in the Explorer Tree pane,followed by the file name.

Step 12: To modify the configuration of a terminal or an NMS board, select the relevant iconin the Explorer Tree pane, then go through each of the available tabbed pages in theConfiguration workspace. Either accept the displayed parameter values or enter thevalues you require. Refer to Using the Configuration Workspace for details. Select theCommit button from the DXR NET toolbar to save the changes to the blueprint.

Step 13: To export the configuration of a a terminal or an NMS board, right-click on therelevant icon in the Explorer Tree pane, then select Export Network Element. In theExport Configuration window, select the directory you want to save the configurationfile to and the name you want to save it under, then click Save.

Step 14: When you have completed your modifications to the blueprint, and you wish tooverwrite the existing saved blueprint file, select the File menu in the DXR NET

toolbar, then select the Save option from the drop-down menu.

Step 15: When you have completed your modifications to the blueprint, and you wish to savethe existing saved blueprint file, select the File menu in the DXR NET toolbar, thenselect the Save As option from the drop-down menu, and use the fields in the Save Aswindow to select the directory you wish to save the file to, and input the new filename.

Step 16: When you are finished using the tool, select Exit from the File menu.

Autodiscovery of a network You would use the DXR NET Autodiscovery function to access a network for the purpose ofviewing or modifying the configurations of the network elements. To access the network and itselements with the Autodiscovery feature, first connect your PC to the network (see “Connectingyour PC to the DXR 100 Terminal”), then use the following procedure.

ABORT. Whenever you use DXR NET to make changes to a link or terminal, you canstop the change action by selecting the Abort button in the displayed dialog box.However, if you do this, DXR NET will simply stop sending commands to theterminal. This can leave the link in an undesired state, with the terminal software notreflecting the correct settings for the link. You will then need to set the correct valuesin DXR NET and re-send them to the affected terminals. For these reasons, werecommend that before you start making changes you save the current terminalconfiguration, and that you have a hard copy of the desired settings available.

WRITING CONFIGURATION CHANGES TO THE TERMINAL. Whenever youwrite configuration changes and data to a terminal, there is a momentary loss oftraffic on the link. We advise therefore that you carry out any changes to theconfiguration when the link is either out of service, or at times when link traffic is at aminimum.

REMOTE TERMINAL CHANGES. Some actions can cause the loss ofcommunication to the remote terminal in a link, requiring manual intervention at theremote terminal to re-establish the link. We therefore advise you take great care




when making any changes that could impact communication with the remote terminal.

Digital Microwave Corporation advises that when checking or modifying the data, youhave hard copy of the expected values available to refer to before beginning theprocedure.

Digital Microwave Corporation advises that you save the configuration data of allyour terminals after initial setup and after any changes are made.

Note 1: The blueprint for the attached network must be available to the DXR NET PC.

Note 2: When using the LMT, you will only be able to access the network elements that makeup the local link. Elements you cannot access will be shown “greyed-out”.

Note 3: In the Explorer Window, the icon for the terminal you are connected to will show ared plug symbol.

ProcedureStep 1: From the desktop, run DXR net.


Step 3: Select the Connect button from the DXR net toolbar. The terminal will be"Autodiscovered"The blueprint of the network you are attached to will appear in theExplorer Tree window.

Step 4: To access the configuration of a terminal or an NMS board, right-click on the relevanticon in the Explorer Tree pane, then select Read Configuration from the drop-downmenu.

Step 5: Go through each of the available tabbed pages in the Configuration workspace, andeither accept the displayed parameter values or enter the values you require. Refer toUsing the Configuration Workspace for details. Select the Commit button from theDXR NET toolbar to save the changes to the blueprint.

Step 6: To save any configuration changes to a network element, right-click on the relevanticon in the Explorer Tree pane, then select Export Network Element. In the ExportConfiguration window, select the directory you want to save the configuration file toand the name you want to save it under, then click Save.

Step 7: To load any configuration changes made in the blueprint to a terminal or an NMSboard, right-click on the relevant icon in the Explorer Tree pane, select WriteConfiguration from the drop-down menu. Select Start to load the configuration datainto the terminal or NMS board, then Close when the data has been written.

Step 8: When you are finished viewing or modifying the network, click on the Disconnectbutton in the DXR NET toolbar, then select Exit from the File menu.

You are now returned to the PC desktop.



Using the Configuration Workspace functions You can use the Configuration Workspace to access and modify the following DXR 100parameters:

• Terminal transmit and receive frequencies (MHz) and transmitter RF power (dBm)

• Forward and reflected power alarm limits (dBm)

• AGC alarm limits (V)

• Diversity

• Correctable bytes per second alarm upper limit

• Mapping of alarms in the action table

• Commissioning and impedance of tributaries

• Alarm inputs and outputs

In addition, when the DXR 100 has the optional NMS daughterboard, you can useConfiguration Workspace to access and modify the board IP addressing (routes, masks andinterfaces).

ABORT. Whenever you use DXR NET to make changes to a link or terminal, you canstop the change action by selecting the Abort button in the displayed dialog box.However, if you do this, DXR NET will simply stop sending commands to theterminal. This can leave the link in an undesired state, with the terminal software notreflecting the correct settings for the link. You will then need to set the correct valuesin DXR NET and re-send them to the affected terminals. For these reasons, werecommend that before you start making changes you save the current terminalconfiguration, and that you have a hard copy of the desired settings available.

WRITING CONFIGURATION CHANGES TO THE TERMINAL. Whenever youwrite configuration changes and data to a terminal, there is a momentary loss oftraffic on the link. We advise therefore that you carry out any changes to theconfiguration when the link is either out of service, or at times when link traffic is at aminimum.

REMOTE TERMINAL CHANGES. Some actions can cause the loss ofcommunication to the remote terminal in a link, requiring manual intervention at theremote terminal to re-establish the link. We therefore advise you take great carewhen making any changes that could impact communication with the remote terminal.

Digital Microwave Corporation advises that when checking or modifying the data, youhave hard copy of the expected values available to refer to before beginning theprocedure.

Digital Microwave Corporation advises that you save the configuration data of allyour terminals after initial setup and after any changes are made.




Changing the terminal frequencies and transmitter RF power You can change the transmit and receive frequencies and RF output power of a terminal usingthe following procedure.

CHANGING THE TERMINAL FREQUENCIES. The range of frequencies thatyour terminal can transmit and receive is determined by the terminal hardware. Donot set your terminal to frequencies it cannot use.

REMOTE TERMINAL CHANGES. Changing the frequencies at the local terminalmay affect communication with the remote terminal, requiring action at the remotesite.

Note 1: If you change the terminal transmit and receive frequencies by more than ±1MHz, youwill need to re-tune the terminal duplexer.

ProcedureStep 1: Select the Configuration Workspace.

Step 2: Select the Modem/RF Link Setup page.

Step 3: Change the transmit and receive frequencies, or the transmitter power by using theup/down arrows in the relevant field, or by selecting the relevant field and typing inthe value.

Step 4: After you have finished making your changes, select the Commit button in theToolbar.



Figure 14: Modem/RF Link Setup Page for a Protected Terminal

The changes you have made will be reflected in the network blueprint. If you are not going tomake any further changes to the terminal configuration, select the Write Configuration button inthe Toolbar. The terminal configuration will now change to reflect the values set in theblueprint.

Changing the terminal power alarm limits You set the power alarm limits to define the range of acceptable values for the terminal forwardand reflected power. The terminal will generate an alarm signal if it detects that either power isoutside the range. The alarm limits are set in the Thresholds page.

The terminal forward power is the output power of the RF signal produced by the DXR 100transmitter. It has two fields, Low limit and High limit. The value you set in the first determinesthe minimum acceptable value for the RF output power, the value in the second determines themaximum acceptable value. You can set the values by either selecting the fields and typing inthe value you require, or using the up/down arrows in the fields.

The reflected power is the power reflected back to the is the RF power being reflected back tothe DXR 100 from the antenna, and it must remain under a maximum acceptable value or highlimit. You can set this value by either selecting the field and typing in the value you require, orusing the up/down arrows in the field.

You can change the terminal power alarm limits using the following procedure.

Note 1: You can also set the limits to their default values by clicking the Default button.




Note 2: For a protected terminal, you can set the limits for each individual radio.


Step 2: Select the Thresholds page.

Step 3: In the Transmit Path section, set the high and low limits for the forward power byusing the up/down arrows in the relevant fields, or by selecting the relevant fields andtyping in the values.

Step 4: In the Transmit Path section, set the high limit for the reflected power by using theup/down arrows in the field, or by selecting the field and typing in the value.


Figure 15: Thresholds Page




Changing the AGC alarm limits You set the Automatic Gain Control (AGC) alarm limits to define the range of acceptablevalues for the AGC voltage. The terminal will generate an alarm signal if it detects that this isoutside the acceptable range.

The AGC is a voltage applied in the DXR 100 circuitry that controls the gain applied to thereceived RF signal to ensure that the information it carries can be recovered. It has two fields,Low limit and High limit. The value you set in the first determines the minimum acceptableAGC value, the value in the second determines the maximum value.

You can change the AGC low and high limits of a terminal using the following procedure.

Note 1: You can also set the limits to their default values by clicking the Default button.

Note 2: For a protected terminal, you can set the limits for each individual radio.



Step 3: In the Receive Path section, set the high and low limits for the AGC by using theup/down arrows in the relevant fields, or by selecting the relevant fields and typing inthe values.



Changing the Correctable Bytes per Second Threshold You use the Correctable Bytes per Second field to set the maximum number of bytes receivedover the terminal link that need error-correction. If the number exceeds the set limit, the link isno longer operating reliably. The terminal will generate an alarm signal if it detects that thenumber is outside the range. The number of Correctable Bytes per Second is set in theThresholds page. Refer to "Appendix F: Correctable Bytes per Second" for this value.

You can set the Correctable Bytes per Second Threshold of a terminal using the followingprocedure.

Note: You can set the limit to a default value by clicking the Default button.






Step 3: In the General section, set the number of bytes per second by using the up/downarrows in the field, or by selecting the field and typing in the value.



Setting the Terminal Diversity OptionYou can change the diversity option of a protected terminal using the following procedure.

SETTING THE TERMINAL DIVERSITY OPTION. The diversity you can select isdependent on the terminal hardware. You must not make any changes in the software that donot comply with your terminal hardware.

Note: If you select either of the Space or Frequency Diversity options, you will have to setthe terminal power and AGC alarm limits for each radio. If you select the FrequencyDiversity option, you will also have to set the frequencies and transmitter power foreach radio.


Step 2: Select the Modem/RF Link Setup page.

Step 3: In the Protected & Diversity Options section, select the option you require by clickingthe relevant radio button. You can choose between Protected, Space Diversity orFrequency Diversity.

Step 4: If you have selected the Frequency Diversity option, select the frequencies you requirefor the two radios in the Radio A and Radio B fields. Refer to Changing the TerminalFrequencies and RF Power for details.

Step 5: If you have selected either of the Frequency or Space Diversity options, select theterminal power and AGC alarm limits for each radio. Refer to Changing the TerminalPower Alarm Limits and Changing the AGC Limits for details.





Mapping an Event to an Action You can set the DXR 100 or NMS board to create a pre-set alarm action when a specific eventoccurs. This is known as mapping an event to an action, and is set up in the Action Table page.

The Action Table page is divided into the Events, Mapped Actions and Inherited Actions panes.The Events pane lists the events that you can set an action for. The events are listed in theWindows Explorer tree format. The Mapped Actions pane lists any actions that you havemapped to the alarm presently selected in the Events pane. The Inherited Actions pane lists anyactions which are mapped to an alarm higher up in the tree hierarchy than the alarm you havecurrently selected.

Note: If you are mapping an action to an event on a DXR 100 terminal, select the terminalicon in the Explorer Tree. If you are mapping an action to an event on a NMS board,select the board icon in the Explorer Tree.

You can set an event to generate an action using the following procedure:


Step 2: Select the Action Table page. The events you can select actions for are displayed in ahierarchical tree in the Windows Explorer format in the Events pane.

Step 3: Move down the levels of the tree in the Events pane, until you can select the event forwhich you want to generate an action.

Step 4: Select the Add Actions button.

Step 5: In the Add Actions window, select the Location (ie, where you want the alarm actionto be produced) and the Action (ie, what you want to happen when the event occurs)from the scroll-bars, then click on the Add Action button next to the menu window.The action will appear in the lower pane of the window.

Step 6: Select the OK button in the Add Actions window. The window will close and theaction should now be displayed in the Mapped Actions pane of the Actions Tablepage.





Figure 16: Action Table Page


Removing an Action from an Event You can remove an action you have mapped to an event (see Mapping an Event to an Action)using the following procedure:

Note: If you are removing an event from a DXR 100 terminal, select the terminal icon in theExplorer Tree. If you are removing an event from a NMS board, select the board iconin the Explorer Tree.


Step 2: Select the Action Table page. The events you have selected actions for are displayedin a hierarchical tree in the Windows Explorer format in the Events pane.



Step 3: Move down the levels of the tree in the Events pane, until you can select the eventfrom which you want to remove an action. Any actions mapped to the event will bedisplayed in the Mapped Actions pane.

Step 4: Select the action you want to remove in the Mapped Actions pane and click the DeleteActions button. The action will disappear from the pane.



Changing the Terminal Line Interface Type You can change the terminal line interface to one of the following:

• E1

• DS1

You can change the terminal line interface using the following procedure:

CHANGING THE INTERFACE TYPE. The interface type of your DXR 100 terminal is setby the terminal hardware. You must not select an interface type that your terminal cannotsupport.


Step 2: Select the Interface Setup page.

Step 3: Click on the Interface Type field in the Interface section and select the interface typefrom the displayed drop-down menu.





Figure 17: Interface Setup Page with Interface Type Drop-down Menu


Changing the Terminal Line Interface Parameters (E1 Type Interface) You can change the following line interface parameters for an E1 type interface:

• Interface capacity (ie, the maximum number of tributaries available for commissioning)

• Tributary impedance

• Commissioned state (ie, whether a tributary has been set up to carry traffic or not)

CHANGING THE TRIBUTARY IMPEDANCE. You must set the tributary impedance tomatch the cabling attached to the terminal front panel.

You can change the terminal line parameters using the following procedure:




Step 2: Select the Interface Setup page.

Step 3: If you wish to change the interface capacity, select the new capacity from the drop-down menu displayed when you click on the Interface Capacity field in the Interfacesection.

Step 4: If you wish to change the impedance of a particular tributary, double-click on therelevant entry in the Impedance column of the table in the Tributary section, then usethe arrow to display the drop-down menu. Select the new impedance from the drop-down menu.

Step 5: If you wish to change the commissioned state of a particular tributary, select therelevant entry in the Commissioned column of the table in the Tributary section, thenuse the arrow to display the drop-down menu. Select the new impedance from thedrop-down menu.



Setting Up Alarm Inputs The DXR 100 can have up to two alarm inputs. An alarm input is an external signal that can befed into the terminal, eg site door open, where it is used to generate an event in the ActionTable. This enables the alarms at remote sites to be monitored over the terminal link. The alarminputs are fed into the terminal via DB15 connector on the DXR 100 front panel, and are set-upin the Alarm Inputs sub-section Alarm IO page.

The Alarm Inputs sub-section contains the following fields:

• Input 1 Identifier

• Input 2 Identifier

• Normal State (for each of the input fields)

You can assign names to the alarm inputs by selecting the relevant input identifier field andtyping in the name. You then select the normal condition of the input, ie. the input state thatindicates no alarm is present, by double-clicking on the Normal State field and selecting “NoCurrent” or “Current” for the from the displayed drop-down menu.

You can setup an alarm input to the DXR 100 using the following procedure:


Step 2: Select the Alarm IO page.

Step 3: If you wish to assign a name to the alarm input, then select the relevant inputidentifier field, type in the name, then press Enter.




Step 4: If you wish to set the normal condition of the input, ie. the input state that indicatesno alarm is present, double-click on the Normal State field, and select the appropriatestate from the drop-down list. You can choose between “Current” and “No Current”.


Figure 18: External Inputs/Outputs Page - Setting Up an Alarm




Setting Up Alarm Outputs The DXR 100 can have up to two alarm outputs. An alarm output is a signal fed out from theterminal, eg to operate a buzzer, in response to the occurrence of an event listed in the ActionTable. The alarm outputs are fed out of the terminal via DB15 connector on the DXR 100 frontpanel, and are set-up in the Alarm Outputs sub-section of the Alarm IO page.

The Alarm Outputs sub-section of the Alarm IO page contains the following fields:

• Output 1 Identifier

• Output 2 Identifier

• Normal State (for each of the input fields)

• Rate (for each of the input fields)

You can assign names to the alarm outputs by selecting the relevant identifier field and typing inthe name. This is the name that will be displayed in the Action Table.

There is a Normal State field and a Rate field for each of the identifier fields. The Normal Statefield determines whether the normal (ie, no alarm is present) condition is open-circuit orclosed-circuit. You can select either “Open” or “Closed” from the drop-down list displayedwhen you click-on the field. The Rate field determines the maximum number of alarm signalsthan can be output per second. You can select a rate from zero to twenty using the up/downarrows in the field.

Note: You must select a number between zero and twenty in the Rate field, and you mustselect an integer value.


Step 2: Select the Alarm IO page.

Step 3: If you wish to assign a name to the alarm input, then select the relevant inputidentifier field, type in the name, then press Enter.

Step 4: If you wish to set the normal condition of the input, ie. the input state that indicatesno alarm is present, double-click on the Normal State field, and select the appropriatestate from the drop-down list. You can choose between “Open” and “Closed”.

Step 5: Select the maximum number of times the alarm will be detected per second by clickingon the Rate field, and either using the up/down arrows, or typing in the value.






Setting the NMS Board IP Address The NMS board uses PPP to communicate with other equipment, either directly connected, orconnected via a network. Because of this, each NMS board on the network must have its ownunique IP address.

You can use the following procedure to set the IP address for a directly connected NMS board:

Note: The following procedure assumes that you know the current IP address of the NMSboard, and the IP addresses for all the other NMS boards on the network. Refer toAppendix B for a simple IP address selection procedure.

ProcedureStep 1: Select the NMS board in the Explorer Tree.

Step 2: Select the Configuration Menu in the menu bar.

Step 3: Select IP Address Table from the drop-down menu.

Step 4: Double-click on NMS board IP address, then type in the new address.

Step 5: If the IP Address Mask is not 255.255.255.255, then double-click on the field andtype in 255.255.255.255.

Step 6: Click OK, then "Hit write to terminal" button, then Start.

Step 7: When the address has been updated, click Finish.

The NMS board will reset itself when the operation is complete, and you will need to reconnectto do any further operations.



Figure 19: IP Address Table Window




Figure 20: Routing Table Window



The changes you have made will be reflected in the network blueprint. Select the WriteConfiguration button in the Toolbar. The terminal configuration will now change to reflect thevalues set in the blueprint.

Setting Up the IP Addresses in the NMS Board Routing Table You use the Routing Table to set-up the IP routes by which the NMS Board communicates withother IP devices on the network. You must set-up these routes, otherwise the NMS Board willnot be able to communicate with the network.

Note: Each IP device on the network must have an unique IP address.

You can set the IP routes to the other devices on the network in the Routing Table using thefollowing procedure.

Note: The following procedure assumes that you have already selected IP addresses for allthe IP devices on the network. Refer to Appendix C for a simple IP address selectionprocedure.

ProcedureStep 1: Select the NMS board in the Explorer Tree.

Step 2: Select the Configuration Workspace.

Step 3: Select the Routing Table tabbed page.

Step 4: Select the IP address for one of the other IP devices on the network.

Step 5: Take the IP address from Step 4, make the last field in the address zero, then enterthis new address into the next empty field in the Destination IP Address column.

Step 6: For the IP address in Step 4, enter 255.255.255.0 in the Mask Address IP column,and

Step 7: For the IP address in Step 4, double-click in the Interface column, and select the portyou want the NMS board to use for devices on this address from the drop-down menu.

Step 8: Repeat Steps 4 to 7 until you have entered routes for all the other NMS board into theRouting Table

Step 9: Add the IP address of the NMS unit, once again making the last octet a zero, and amask of 255.255.255.0, and a destination of V.24





Figure 21: Routing Table Page - Typical IP addresses


Using the Commissioning Workspace Functions The Commissioning Workspace can be used to carry out the following:

• Viewing the details on the Commissioning page (for DXR 100 only)

• Viewing the details on the Terminal Details page (for DXR 100) or the NMS Details page(for NMS board)

• Enabling loopbacks on the Controls page for test purposes (for DXR 100 only)

Viewing the Commissioning Page The site details, AGC and Alarm status information for local and remote terminals aredisplayed on the Commissioning page of the Commissioning Workspace. You view theCommissioning page by selecting the Commissioning Workspace, and, if required, selecting theCommissioning page tab.



Note: The Commissioning page is only available when you have currently a DXR 100terminal selected in the Explorer Tree. There is no such page for the NMS board.

The Commissioning page is divided into Local Terminal and Remote Terminal sections.

Note: The terminal you have currently selected in the Explorer Pane is identified by“(Selected)” after “Local” or “Remote” in the section title (depending of course onwhich terminal you have actually selected).

Each section contains the following sub-sections:

• Terminal Details

• AGC

• Alarm Information

Terminal Details The Terminal Details sub-section contains the following fields:

• Site

• Terminal

• TX Frequency (MHz)

• TX Power (dBm)

Note: You will not be able to change any of the names or values in fields on this page.

Each of these fields should contain the names or values that you have assigned to theirassociated parameter. You set the Site and Terminal names either when you create the networkblueprint, or, alternatively, in the General Setup page in the Configuration Workspace. You setthe values for the TX Frequency and Power in the Modem/RF Link Setup page in theConfiguration Workspace. If you have not assigned a name or value, the field contains thedefault name or value for that parameter.

AGC The AGC sub-section contains a bar-graph that displays the current AGC value, and a ResetAGC button that you select to display an up-to-date AGC reading in the bar-chart.

Alarm Information The Alarm information section has two items, an Alarm Status LED icon, and a View Alarmsbutton. The icon is used to indicate whether any alarms are present on the DXR 100. Thecolours it can take and their meanings are listed in the table below.

Colour Meaning Bright Green Indicates that no alarm is present. Dull Red Indicates that the alarm status is not known. Red Indicates that an alarm has been triggered.

Note: A “dull red” icon is usually due to DXR net being unable to communicate with the

terminal.




If you click on the View Alarms button, the Alarms page is displayed. The Alarms page isdivided into two panes. The left-hand pane, Alarm Status and Related Information, lists allpossible alarms in the Windows Explorer tree format. This has the alarms grouped inhierarchical levels under the units currently present in the link or terminal.

You can move through the levels by double clicking on a unit listing to display the sub-unit andalarm listing under it. Each unit or alarm listing has an LED icon next to it. For an unit listing,the icon indicates whether there are any alarms present in the unit or any sub-units under it. Foran alarm listing, the icon indicates the alarm status, as described in the previous table. Units“inherit” alarms from levels under them in the hierarchy. You can therefore use the AlarmStatus and Related Information pane to detect when an alarm is present on an unit, and then totrack the alarm to a particular component.

Note: The status indicated by the icons is given in the previous table.

The right-hand pane, Alarm Information, displays the details of any alarm selected in the left-hand pane. The right-hand pane contains the following fields:

• Alarm Name

• Alarm Description

• Alarm Type

• Alarm Severity

The Alarm Name field contains the name of the alarm as shown in the left-hand pane. TheAlarm Description contains the probable cause of the alarm.

The Alarm Type field entries are described in the following table.

Alarm Type Description Equipment Indicates an alarm associated with an equipment fault. Environmental Indicates an alarm associated with the enclosure that contains

the DXR 100 equipment. Processing error Indicates an alarm associated with a software or processing

fault. Communications Indicates an alarm associated with the procedures and/or

processes required to carry information. Quality of service Indicates an alarm associated with the degradation of quality

of service.

You can view the Alarms page using the following procedure.

ProcedureStep 1: Select the Commissioning Workspace.

Step 2: Select the Commissioning page.

Step 3: If the LED icon in the Alarm Status section is red, click on the View Alarms button todisplay the Alarms page.



Step 4: If the icon in the Alarm Status and Related Information pane is red, click on the iconto move down the hierarchical alarm levels until the alarm is reached. The alarm nameand a description of the most likely causes will be displayed in the right hand-panes.

Step 5: When you have identified an active alarm, take the required action to correct it, ie,clear the alarm condition yourself, or if this is not possible, alert the appropriatenetwork personnel.

Figure 22: Alarms Page

Viewing the Terminal Details Page When you have selected a DXR 100 terminal in the Explorer Tree, you will be able to view theTerminal Details page in the Commissioning Workspace. This page has the following sections:

• General Information

• Pedigree Information (for a non-protected terminal)

• Daughter Board Information (for a non-protected terminal)

• PSW (for a protected terminal)

• PRA A (for a protected terminal)

• PRA B (for a protected terminal)

You view the Terminal Details page by selecting the Commissioning Workspace, and, ifrequired, selecting the Terminal Details page tab.




General Information The General Information section contains the following fields:

• Site Name

• Terminal Name

• Terminal Type

• Modulation Type

• Capacity

• Occupied Bandwidth

The Site Name field contains the names that you have assigned to the site in the networkblueprint. You set the Site Name either when you create the network blueprint, or, alternatively,in the General Setup page in the Configuration Workspace. If you have not assigned a name tothe site, the field is assigned the default string “Site n” where “n” is an integer relating to thenumber of terminals in the network.

The Terminal Name field contains the name you have assigned to the terminal in the networkblueprint. You set the Terminal Name either when you create the network blueprint, or,alternatively, in the General Setup page in the Configuration Workspace. If you not assigned aname to the terminal, the field is contains the default string “Undefined terminal n” where “n” isan integer relating to the number of terminals in the network.

The Terminal Type field contains the equipment description of the terminal. You set theTerminal Type when you assigned the terminal to the network blueprint. The field is generatedautomatically from your selection, and you cannot change it except by deleting the terminalfrom the blueprint and selecting another terminal.

The Modulation Type field contains the type of modulation the terminal applies to the RFsignal. The type of modulation is set at the factory, so you specify the type you require whenyou order the terminal. The field is generated automatically from your selection, and you cannotchange it.

The Capacity field is only displayed when you have selected E1 as the line interface type for theterminal. It displays one of 1xE1, 2xE1 or 4xE1, ie, the number of E1 channels you set theterminal to support. You can set the capacity in the Interface Setup page of the ConfigurationWorkspace.

The Occupied Bandwidth field contains the RF bandwidth that the signal from the terminaltakes up. The field is generated automatically from the frequency range and modulation typeyou specified when you ordered the terminal, and you cannot change it.

Pedigree Information The Pedigree Information section contains the following fields for a non-protected terminal:

• Part Number

• Serial Number

• Software Type

• Software Version



The details contained within these fields are self-explanatory. The section also contains aDetails button, which you can use to display the Pedigree Details box. This lists the PartNumber, Serial Number and Build Level for the Terminal Hardware, and the Version and Typefor the Terminal Software.

Daughter Board Information The Daughter Board Information section contains the following fields for a non-protectedterminal:

• Option Board 1

• Option Board 2

There are two slots for fitting optional daughter boards on the terminal PCB. The two fieldsdisplay the names of any boards that have been fitted. The boards are normally either factoryfitted, which means you have to specify them when you order the terminal, or they can be fittedby an accredited Digital Microwave Corporation representative. The entries are automaticallygenerated depending upon which boards are fitted, so you will not be able to change them.

PSW The PSW section contains the following fields for the PSW in a protected terminal:

• Part Number

• Serial Number


• Option Board 1

• Option Board 2

The details contained within these fields are self-explanatory. The section also contains a PSWDetails button, which you can use to display further details.

PRA A The PRA A section contains the following fields for Radio A of a protected terminal:

• Part Number

• Serial Number


The details contained within these fields are self-explanatory. The section also contains a PRAA Details button, which you can use to display further details.

PRA B

PRA A The PRA A section contains the following fields for Radio A of a protected terminal:

• Part Number

• Serial Number





The details contained within these fields are self-explanatory. The section also contains a PRAA Details button, which you can use to display further details.

Enabling the Tributary Loopbacks The Tributary Loopbacks section in the Controls page allows you to select the following typesof loopbacks:

• No Tributary Loopback (default)

• Line Facing

• Radio Facing

You select an option by clicking on the appropriate radio button with the mouse. The centre ofthe button you have selected is filled in to show it has been selected.

Note: You can only select one of the three options at any one time.

You can use the loopback functions to test the signal integrity of the link, and to help locatewhere any integrity problems are occurring. When you select a loopback functions, youbasically set the terminal to feed back any received input signal back to the signal source.Normally, you would enable a loopback function, input a known bit-stream, and check the bit-stream output from the terminal for errors.

When you select the Line Facing loopback function, the loopback is made in the local terminal.Any bit-stream fed into a line input channel to the terminal will be fed back out again on theappropriate line output channels. You can then compare the output stream with the inputstream, identifying any errors. From this, you will be able to deduce the quality of service andthe error-rate of the terminal line interface.

When you select the Radio Facing loopback function, the loopback is made in the remoteterminal. Any bit-stream fed into a line input channel to the local terminal will be sent along thetransmitter path to the remote terminal, from where it will be fed back out again on the receiverpath for the local terminal. The local terminal will therefore output this as it would any otherreceived signal. You can then compare the output stream with the input stream, identifying anyerrors. From this, you will be able to deduce the quality of service and the error-rate of the radiolink.

You can enable the tributary loopback functions on the Controls page using the followingprocedure.

Note 1: Loopback functions interrupt network traffic.

Note 2: Tributary loopbacks affect all tributaries at once.


Step 2: Select the Controls page.

Step 3: Select the tributary loopback function from the Tributary Loopback section byclicking on the associated radio button.



Step 4: Compare the input and output bit-streams.

Step 5: When you have completed your tests, select No Tributary Loopback.

Figure 23: Controls Page

Enabling Digital/IF/FEC Loopbacks The RF/Modem section of the Controls page allows you to select the following types ofloopbacks:

• Digital Loopbacks

• IF Loopback

• FEC Disable

You select an option by clicking on the appropriate check box with the mouse. The box youhave selected is “checked”.

Note: You can only select these loopbacks for the local terminal.




You can use the loopback functions to test the data integrity of the terminal, and to help locatewhere any integrity problems are occurring. When you select a loopback function, you basicallyset the terminal to feed back any received input data back to the source. Normally, you wouldenable a loopback function, input a known bit-stream, and check the bit-stream output from theterminal. You can then compare the output stream with the input stream, identifying any errors.

When you select the Digital Loopbacks option, the loopback is made between the compositedigital transmit and receive streams inside the radio modem, before the streams are passed todigital-to-analogue conversion. From this, you will be able to deduce the error-rate in themodem circuitry.

When you select the IF Loopbacks option, the loopback is made between the transmit andreceive IF signals, just before they are output from the terminal. From this, you will be able todeduce the error-rate in the IF circuitry.

When you select the FEC Disable option, the loopback is made between the transmit andreceive RF channels by setting them both to the same frequency. From this, you will be able todeduce the transmission error-rate. You need to disable FEC for this, as FEC automaticallycorrects any errored bytes in the received data, and this would mean that any errors would becorrected before you could detect them.

You can enable the Digital/IF/FEC loopback functions on the Controls page using the followingprocedures.

Note: Loopback functions interrupt network traffic.



Step 3: Select the RF/Modem loopback function from the RF/Modem section by clicking onthe associated check box.


Step 5: When you have completed your tests, deselect the loopback function by clicking againon the check box.

Viewing the NMS Details Page The NMS Details page is divided into the following sections:

• General Information

• Pedigree Information

The General Information section contains the Site and NMS Board Name fields. The Site Namefield contains the names that you have assigned to the site in the network blueprint. If you havenot assigned a name to the site, the field is assigned the default string “Site n” where “n” is aninteger relating to the number of radios in the network. The NMS Board Name field containsthe name you have assigned to the terminal in the network blueprint. If you not assigned a nameto the NMS Board, the field contains the default string “Undefined NMS Board n” where “n” is



an integer relating to the number of NMS Boards in the network.

The Pedigree Information section contains the Part Number, Serial Number, Software Type andSoftware Version fields. The details contained within these fields are self-explanatory. Thesection also contains a Details button, which you can use to display the Pedigree Details box.This lists the Part Number, Serial Number and Build Level for the NMS Board Hardware, andthe Version and Type for the NMS Board Software.

Using the Maintenance Workspace Functions When you have selected a DXR 100 terminal in the Explorer Tree, the Maintenance Workspacecan be used to view the Alarm status, the Constellation diagram, the AGC graph and theTerminal Details page. It can also be used to enable the loopback functions.

When you are have selected a NMS board in the Explorer Tree, the Maintenance Workspacecan be used to view the Alarm status and the NMS Details page.

Viewing the Alarm Status The details for the alarm status are as described previously under the CommissioningWorkspace functions.

You can view the Alarms page from the Maintenance Workspace using the followingprocedure.

ProcedureStep 1: Select the Maintenance Workspace.

Step 2: Select the Alarms page.

Step 3: If the icon in the Alarm Status and Related Information pane is red, click on the iconto move down the hierarchical alarm levels until the alarm is reached. The alarm nameand a description of the most likely causes will be displayed in the right hand-panes.

Step 4: When you have identified an active alarm, take the required action to correct it, ie,clear the alarm condition yourself, or if this is not possible, alert the appropriatenetwork personnel.




Figure 24: Alarms page in maintenance workspace

Viewing the Constellation Diagram The Constellation page is divided into the Select Terminal and the Constellation Diagramsections.

The Select Terminal section contains the Local, Remote, Monitor All and Reset All buttons.You use the Local and Remote buttons to select which of the terminals you wish to create theConstellation diagram for. You select the terminal by clicking the appropriate button. You usethe Monitor All button to start monitoring the baseband signal. You use the Reset All button tostart re-monitoring the signal from that point in time. You select the option you require byclicking the appropriate button.

The Constellation Diagram section contains the Constellation Diagram, the AGC (V) and SNR(dBm) fields and the Monitor and Reset buttons. The Constellation Diagram is a polar graphshowing the plots obtained from monitoring the baseband signal of the selected terminal. Theplots consist of groups of points, each point representing many samples of the phase andamplitude of the baseband signal. For error-free operation, the points should be tightly groupedtogether. You can therefore derive the performance of the link by viewing the plots in thediagram.

Note: The number of sections the diagram is divided into depends on the type of modulationbeing used. For DQPSK, the diagram is divided into four sections, for 16QAM, it isdivided into sixteen sections.

The AGC (V) and SNR (dBm) fields allow you to view the current values of these twoparameters. You use the Monitor button to start monitoring the baseband signal. You use theReset button to start re-monitoring the signal from that point in time. You select the option yourequire by clicking the appropriate button.

You can view the Constellation Diagram using the following procedure.




Step 2: Select the Constellation Diagram page.

Step 3: Select the terminal (local or remote) you wish to monitor by clicking on the relevantbutton.

Step 4: Start the monitoring by clicking the Monitor All button.

Step 5: If you wish to refresh the display click on the Reset All button.

Figure 25: Constellation Diagram

Viewing AGC Page The AGC page is divided into the Select Terminal and the AGC graph sections.

The Select Terminal section contains the Local and Remote buttons. You use these buttons toselect which of the terminals you wish to create the Constellation diagram for. You select theterminal by clicking the appropriate button.




The AGC Graph section contains a dynamic display of the AGC voltage plotted on a graph.The graph shows sampled AGC voltage value plotted between the maximum and minimumvalues you selected in the Thresholds page of the Configuring Workspace. You can thereforemonitor the variation of the AGC voltage with time. When the plot reaches the right-hand axis,it returns to the left-hand axis and restarts.

You can view the AGC graph using the following procedure.


Step 2: Select the AGC Graph page.

Step 3: Select the terminal (local or remote) you wish to monitor by clicking on the relevantbutton.

Step 4: Start the monitoring by clicking the Monitor All button.

Step 5: If you wish to refresh the display click on the Reset All button.

Figure 26: AGC Graph

Enabling Tributary Loopbacks The tributary loopbacks are as described previously under the Commissioning Workspace



functions.

You can enable the tributary loopbacks from the Controls page in the Maintenance Workspace,using the following procedure.


Note 2: Tributary loopbacks affect all tributaries at once.



Step 3: Select the tributary loopback function from the Tributary Loopback section byclicking on the associated radio button.


Step 5: When you have completed your tests, select No Tributary Loopback.

Enabling Digital/IF/FEC Loopbacks The Digital/IF/FEC loopbacks are as described previously under the CommissioningWorkspace functions.

You can enable the Digital/IF/FEC loopbacks from the Controls page in the MaintenanceWorkspace using the following procedure.


Note 2: You can only select these loopbacks for the local terminal.



Step 3: Select the RF/modem loopback function from the RF/Modem section by clicking onthe associated check box.


Step 5: When you have completed your tests, deselect the loopback function by clicking againon the check box.

Testing Protection SwitchingNote: You can only enable protection switching in a protected DXR 100.

You can test protection switching using the following procedure.




Switching the transmitter will cause an interruption of up to 50 ms in the network traffic.

ProcedureStep 1: Select the Commissioning or Maintenance Workspace.


Step 3: Select the Manual switching option you require from the Protection Switching sectionby clicking on the associated radio button.

Step 4: Select the transmitter or receiver you wish DXR 100 to switch to.

Step 5: When you have completed your tests, reselect the Automatic switching option byclicking again on the associated radio button.

Viewing the Terminal Details Page The Terminal Details page is identical to the Terminal Details page described previously underthe Commissioning Workspace.

You can view the Terminal Details page from the Maintenance Workspace using the followingprocedure.


Step 2: Select the Terminal details page.

Step 3: To view more detailed information, click on the Details button in the Pedigree Detailssection.



Figure 27: Terminal Details Page

Viewing the NMS Details Page The NMS Details page is identical to the NMS Details page described previously under theCommissioning Workspace.

You can view the NMS Details page from the Maintenance Workspace using the followingprocedure.

ProcedureStep 1: Select the NMS board the Explorer Tree.

Step 2: Select the Maintenance Workspace.

Step 3: Select the NMS Details page.

Step 4: To view more detailed information, click on the Details button in the Pedigree Detailssection.

Problems Using the DXR NET LMT Problems encountered using the DXR NET LMT might include:

• The DXR 100 terminal or link cannot be accessed




• Changes to the configuration are not accepted

Problems Accessing the DXR 100 Select the Communications Setup option from the Tools menu, and:

• Check that you have selected the correct interface for your terminal (NMS or non-NMS)

• Check that the cable is connected to the correct COM port of your PC. If it has beeninserted into the wrong port, either connect it to the correct port, or change the selectedCOM port.

• Check that the cable connections are secure.

• Check that the cable pins and wiring are undamaged.

Problems Changing the DXR 100 Configuration Check the original setup details to ensure that you are not trying to load changes that cannot besupported by your variant of the DXR 100.

Commissioning


7 Commissioning

General When you have finished installing DXR 100 hardware and DXR NET software (if necessary) asdetailed in Sections 4 and 5 of this Manual, the DXR 100 system is ready to be commissioned.Commissioning the DXR is a relatively simple process and consists of the following steps:

• Powering up

• Aligning the antennas

• Synchronizing the terminals

Powering Up

Ensure you have completed connecting the power, antenna and G.703 cablesbefore applying power to each end of the DXR 100 link.

ProcedureNote 1: When power is first applied, all the front panel lights will illuminate orange for

several seconds as the system initializes. After the system is initialized, the OK LEDon the front panel should illuminate.

Note 2: After power up is complete the ALARM, BER and SIGNAL LEDs may also beilluminated. This is more likely if the antennas are significantly out of alignment. Atthis stage of the commissioning process these alarms are normal, and will not affectthe antenna alignment procedure.

Step 1: Apply power to the DXR 100 terminals at each end of the link.

Step 2: If the terminals have not been pre-configured, connect a PC to one of the DXR 100terminals and enter configuration data. Please refer to Section 5 of this manual formore information.

Antenna Alignment

Before you Begin To perform the antenna alignment procedure you must have one person at each antenna. It isalso advisable to have some form of communication between the two sites, such as a ‘walkie-talkie’, cellphone or nearby telephone.

Commissioning



Purpose The purpose of this procedure is to ensure that maximum signal strength is present at both endsof the link. This is achieved by aiming the signal from each antenna directly at the centre of theopposite antenna.

You can use the AGC voltage to indicate the signal strength. You can measure the AGC voltageat the monitor point provided on the terminal. Alternatively, you can use the CommissioningWorkspace to monitor the AGC. Refer to Section 5 for details.

Each signal consists of lobes as shown in Figure 30.

Tra n smitting

Antenna

Side Lo b e s

Line s o f C o n stant

Fie ld Strength

M a in Lobe

C 5 7 0 4 Q

Figure 28: DXR100 Antenna Signal Lobes

Antenna alignment involves adjusting the direction of each antenna until the received signalstrength reaches its highest level at each end of the link. There are two steps to the alignmentprocedure.

• Rough Visual Alignment in which each antenna is pointed such that it radiates in theapproximate direction of the other antenna

• Fine Alignment using the azimuth (horizontal angle) and elevation (vertical angle)adjustment hardware built into each antenna mount. This is performed while monitoring theAGC voltage on the front panel connector. The voltage is measured using a voltmeter

Note: You can also use the Commissioning Workspace to monitor the AGC voltage. Referto Section 5 for details.

It is important to aim each antenna at the exact centre of the opposite antenna as shown inFigure 31.

Commissioning


C5704R

Figure 29: DXR 100 - Correct Antenna Alignment on Signal Main Lobe

Ensure the antennas are not aligned on a side lobe rather than the main lobe, as shown in Figure32.

C5704S

Figure 30: Incorrect Antenna Alignment on Signal Side Lobe

Operating a link aligned on a side lobe significantly lowers the receive signal strength andmakes the system vulnerable to outage due to fading.

Rough Alignment - Azimuth ProcedureNote: The antenna fitting must be loose enough to allow it to pivot on the mounting pole, but

still tight enough to provide some resistance.

Step 1: Pivot the antenna assembly horizontally on its mounting pole until it points directly atthe opposite site. If appropriate, the person at the opposite site can use a mirror,strobe, or flag to make it more visible.

Step 2: Tighten the two nuts on the mounting U-bolt, ensuring that pressure is applied evenlyon both sides. As you tighten the nuts, check the antenna direction is still correct.Leave the clamp loose enough to carry out fine adjustment.

Step 3: Repeat steps 1-2 at the opposite site.

Step 4: Go to the elevation procedure detailed below.

Commissioning



Rough Alignment - Elevation ProcedureNote: Some low gain antennas may not have an elevation adjustment and it is sufficient for

them to aim at the horizon.

Step 1: Aim the antenna up or down until it points directly at the opposite site

Step 2: Tighten the elevation adjustment clamp

Step 3: Repeat Steps 1 and 2 at the opposite site.

Fine Alignment Procedure The following procedure ensures the antennas are accurately aligned to the centre of the mainlobe of the opposing antenna.

Step 1: Zero-in on the maximum receive signal strength by panning the antenna until the AGCvoltage peaks to its highest level.

Step 2: Move the antenna to each side of the maximum until the signal begins to drop.

Step 3: Set the antenna to a direction half-way between the two points at which the signalbegins to drop. Fully tighten the antenna clamp.

Step 4: Perform this operation in both the azimuth and (if applicable) elevation planes.

Step 5: Perform Steps 1 to 4 at the opposite site.

Final Check After you have completed the alignment of the two antennas you must ensure the two radioterminals are synchronized

The terminals are synchronized when the SIGNAL Alarm LED is Green indicating a goodsignal, and the BER LED is not illuminated, indicating no errors have been detected.

Note: It is recommended that you save the DXR net terminal configuration to disk, and alsoleave a copy on site for future reference.

Technical Specifications


8 Technical Specifications

Radio Frequency Frequency Ranges 330-470 MHz

890-960 MHz 1350-1550 MHz 2000-2300 MHz 2300-2500 MHz 2500-2700 MHz

Frequency Selection 330-470 MHz: 25 kHz synthesizer steps >470 MHz: 125 kHz synthesizer steps

RF Connector N-type female RF Impedance 50 ohms EMC/EMI ETS 300 385 Spurious Emission/Response ETS 300 630/633 Spectral Efficiency ETS 300 630/633

DQPSK - Class 216 QAM - Class 3

Digital N x E1 Capacity 1 x E1, 2 x E1, 4 x E1 E1 Interface ITU-T, G.703, 2.408 Mbps Impedance Standard - 120 ohm balanced

Optional - 75 ohm unbalanced Modulation Types Narrow Band - 16 QAM

High Gain - DQPSK Error Correction Reed Solomon forward error correction, up to 10 bytes

corrected per 224 byte block Equalization 16-tap DFE/FFE transversal adaptive equalizer




Transmitter Transmission Capacity 1 x E1 (2.048 Mbps)

2 x E1 (2 x 2.048 Mbps)4 x E1 (4 x 2.048 Mbps)

Frequency Ranges 330-470MHz

890-960MHz

1350-1550MHz

2000-2300MHz

2300-2500MHz

2500-2700MHz

Power at Antenna Port DQPSK +35

dBm +35dBm

+31/35dBm

+31dBm

+31dBm

+31dBm

16 QAM +29/31dBm

+27dBm

+31dBm

+31dBm

+28dBm

N/A

Frequency Selection 25 kHz steps at 330-470 MHz range 125 kHz steps at >470 MHz range

Power Range +20 dBm to full power in 0.1 dBm steps (via the NMS) Frequency Stability ±3 ppm Occupied Bandwidth (MHz) 16 QAM DQPSK 1 x E1 <1.0 MHz <1.75 MHz 2 x E1 <1.75 MHz <3.5 MHz 4 x E1 <3.5 MHz <7.0 MHz

Receiver Transmission Capacity 1 x E1(2.048 Mbps) 2 x E1(2 x 2.048 Mbps) 4 x E1(4 x 2.048 Mbps) Noise Figure < 3 dB Sensitivity (at AntennaPort)

DQPSK 10-3 -94 dBm -91 dBm -88 dBm 10-6 -92 dBm -89 dBm -86 dBm

16 QAM 10-3 -91 dBm -88 dBm -85 dBm 10-6 -89 dBm -86 dBm -85 dBm

C/I Ratio Co-Channel 1st Adj. Channel 2nd Adj. Channel DQPSK > 23 dB > 0 dB > -25 dB

16 QAM > 30 dB > 0 dB > -25 dB Residual BER < 10-10

System Gain 10-6

BER 330-470 MHz

890-960 MHz

1350-1550 MHz

2000-2300 MHz

2300-2500 MHz

2500-2700 MHz

DQPSK

1 x E1 127 dB 127 dB 127 dB 123 dB 123 dB N/A

2 x E1 124 dB 124 dB 124 dB 120 dB N/A N/A

4 x E1 N/A 121 dB 121 dB 117 dB 117 dB 117 dB

16 QAM

1 x E1 118 dB N/A 120 dB 120 dB 117 dB N/A

2 x E1 115 dB N/A 117 dB 117 dB 114 dB N/A

4 x E1 114 dB 108 dB 114 dB 114 dB 111 dB N/A



Duplexer (standard) Insertion Loss <2 dB Isolation Loss >85 dB Return Loss >18 dB TX/RX Separation Frequency Range Separation 330-470 MHz 10-70 MHz (see Note) 890-960 MHz 45-70 MHz 1350-1550 MHz 49-200 MHz 2000-2300 MHz 94-200 MHz 2300-2500 MHz 73-200 MHz 2500-2700 MHz 73-200 MHz

Note: Separation is dependant on the capacity of the radio.

Data Service Channel Option

Data I

Interface V.24/RS-232 Data Rates (See Note) 4800 bps typical across multiple radio links

9600 bps typical across a single radio link Connection DB-9 Interface 3

Note: Data rate is configuration dependent.

Data II

Interface V.24/RS-232 Data Rates DIP switch selectable 1200, 2400, 4800, 9600 and

19200 bps baud rates across single and multiple hops Data Length and Parity DIP switch selectable, 7 or 8 data bits, odd, even or no

parity Connection DB-9 Interface 3

Orderwire Option Provides general all-station calling.

Co-directional Interface (ITU-T G.703 64 kbps)

Max length 500 meters Line impedance 120 ohms Branching Provides 2 ports Connection DB-9(In/Out)




Handset Interface

Earphone 120 ohms nominal (100 mW) Microphone Electret 120 ohms (150 mV RMS) PTT Switch Normally open, press to talk

4-wire EOW Adaptor Option Provides a 600 ohm, analogue 4-wire interface, enabling the DXR 100 to be connected toanother non-DXR EOW network, or to an intercom system.

Interface impedance (send/receive) 600 ohms Peak send audio level Maximum -20 dBm input Peak receive audio level Maximum -16 dBm output Clipping audio level -18 dBm Calling alert output Change over relay contact to ground Press-to-talk input ±5 to ±12 V DC at 20 mA maximum Press-to-talk output ±5 to ±12 V DC at 20 mA maximum

NMS Option This factory fitted hardware option is required when running DXR NET Network ManagementTool.

Protected Option Branching Losses Frequency Range RX Splitter TX Splitter 330-470 MHz <3.5 dB <1.0 dB 890-960 MHz <3.5 dB <1.0 dB 1350-1550 MHz <4.0 dB <1.2 dB 2000-2700 MHz <4.5 dB <1.5 dB Tx Switch Time <100 ms

Environmental Operating Temperature -10°C to + 50°C Storage Temperature -20°C to +60°C Relative Humidity Max 95% non-condensing

DC Power Supply Voltage Range Standard -48 VDC (40-72)

Optional ±24 VDC (21-36) Protection Reverse polarity, surge Power Consumption Unprotected <75 watts

Protected <150 watts

Alarms There are two input and output alarms provided.



Input Alarms

Type Optically isolated, bi-directional floating inputs Input Voltage 48 VDC maximum Input Current 10 mA typical, 5 mA minimum, overcurrent protected

Output Alarms

Type Relay contacts, configured as NO or NC Operation 106 operations at 1 A, 24 VDC maximum

105 operations at 1 A, 120 VAC maximum Connection DB-15 female

Mechanical 19 inch Rack Unprotected 120(h) x 436(w) x 280(d) mm

Protected 311(h) x 436(w) x 280(d) mm 120 mm Slim Rack Unprotected 435(h) x 120(w) x 280(d) mm

Protected 1305 (h) x 120(w) x 280(d) mm Weight Unprotected 8 kg

Protected 22 kg

Appendix A: Abbreviations




AGC Automatic Gain Control

BER Bit Error Rate

bps Bits Per Second.

DB-9 The 9 Pin Connector used for V.24

DB-25 The 25 Pin Connector used on the DXR 100

DCE Data Communications Equipment

DQPSK Differential Quadrature Phase Shift Keying

DTI Digital Trunk Interface

DXR The Digital Microwave Corporation Digital Cross-Connect Radio Product

EMI Electromagnetic Interference

ESD Electrostatic Discharge

FEC Forward error correction

IF Intermediate Frequency

LED Light Emitting Diode

PC Personal Computer

PCB Printed Circuit Board

PCM Pulse Code Modulation

QAM Quadrature Amplitude Modulation

RAM Random Access Memory

RF Radio Frequency

RX Receiver

SNMP Simple Network Management Protocol

TX Transmitter



V.24 Serial data communications interface (Also called RS-232)

2 Mbps Two megabits per second. A generic term for the 2.048 megabits per second ITU-TG.703 PCM communications standard.

Appendix B: Typical AGC Calibration Chart



Appendix B: Typical AGC Calibration Chart

DXR100 AGC GRAPH

2

3

4

5

-92 -82 -72 -62 -52 -42 -32

RF INPUT LEVEL dBm

AG

C V

OL

TA

GE

Figure 31: Typical DXR100 AGC Graph

Note: Typical AGC graph only. Refer to the AGC graph included with the DXR 100 forthe actual response of your radio.

Appendix C: Duplexer Alignment



GeneralNote: These retuning and configuring instructions apply to the following duplexer models.

• 1400 MHz Duplexer 200M1-00995-0

• 2200 MHz Duplexer 200M1-00499-0

• 2400 MHz Duplexer 200M1-00500-1

We recommend that you have the following tools and equipment ready before beginningduplexer alignment:

• Network analyser, eg. HP8713B

• Small flat blade screwdriver (2.5 mm)

• Adjustable crescent wrench, 200 mm (optional)

• Torque wrench (optional)

Figure 34 shows the duplexer.

Figure 32: Duplexer Diagram

Tuning the Low Band SideNote: The tuning screws labelled LB1, LB2, LB3 , LB4 and LB5, as shown in Figure 16,

are used for tuning the low band side of the duplexer.

Step 1: Detune all the low band screws, ie. LB1, LB2, LB3, LB4 and LB5, by screwing themout so they are level with the top face of the screw casing.




Step 2: Set the test equipment to measure return loss. Set the vertical scale to 1 dB perdivision and the sweep span to 50 MHz, (centred at the required frequency).

Note: It may be necessary to set the sweep span to 200 MHz when tuning the firstresonator to locate the tuning position. When the first resonator is close tothe desired frequency then the span can be set back to 50 MHz to increaseaccuracy.

Step 3: Connect the equipment to the duplexer so that the source is connected to the low bandinput and the antenna port is terminated in 50 ohm.

Step 4: Adjust tuning screw LB1 until a dip is centred at the resonant frequency as shown inFigure 35.

Figure 33: LB1 Dip

Step 5: Adjust tuning screw LB2 until 2 dips are centred around the resonant frequency. Tryto keep the curve symmetrical. LB1 may have to be adjusted to achieve this. SeeFigure 36.

Figure 34: LB2 Dips

Step 6: Adjust tuning screw LB3 for a deeper symmetrical curve centred around the resonantfrequency. LB2 may have to be adjusted to achieve this. See Figure 37.

Figure 35: LB3 Curve



Step 7: Adjust the screw LB4 for a deeper symmetrical curve centred around the resonantfrequency. LB3 may have to be adjusted to achieve this. See Figure 38.

Figure 36: LB4 Curve

Step 8: Adjust tuning screw LB5 until the return loss curve drops down below 22.0 dB. LB4may have to be adjusted to achieve symmetry. The low band side is now in tune. Someminor adjustment of all the tuning screws may be required to achieve the 22.0 dBreturn loss at the antenna port.

Tuning the High Band SideNote: The tuning screws labelled HB1, HB2, HB3 , HB4 and HB5, as shown in Figure 16,

are used for tuning the high band side of the duplexer.

Step 1: Detune all the high band screws, ie. HB1, HB2, HB3, HB4 and HB5, by screwingthem out so they are level with the top face of the screw casing.

Step 2: Set the test equipment to measure return loss. Set the vertical scale to 1 dB perdivision and the sweep span to 50 MHz, (centred at the required frequency).

Note: It may be necessary to set the sweep span to 200 MHz when tuning the firstresonator to locate the tuning position. When the first resonator is close tothe desired frequency then the span can be set back to 50 MHz to increaseaccuracy.

Step 3: Connect the equipment to the duplexer so that the source is connected to the high bandinput and the antenna port is terminated in 50 ohm.

Step 4: Adjust tuning screw HB1 until a dip is centred at the resonant frequency as shown inFigure 39.

Figure 37: HB1 Dip

Step 5: Adjust tuning screw HB2 until 2 dips are centred around the resonant frequency. Tryto keep the curve symmetrical. HB1 may have to be adjusted to achieve this. SeeFigure 40.




Figure 38: HB2 Dip

Step 6: Adjust tuning screw HB3 for a deeper symmetrical curve centred around the resonantfrequency. HB2 may have to be adjusted to achieve this. See Figure 41.

Figure 39: HB3 Curve

Step 7: Adjust the screw HB4 for a deeper symmetrical curve centred around the resonantfrequency. HB3 may have to be adjusted to achieve this. See Figure 42.

Figure 40: HB4 Curve

Step 8: Adjust tuning screw HB5 until the return loss curve drops down below 22.0 dB. HB4may have to be adjusted to achieve symmetry. The high band side is now in tune.Some minor adjustment of all the tuning screws may be required to achieve the22.0 dB return loss at the antenna port.

Adjustable End CouplingMinor adjustment of the antenna port tuning screws may be required to achieve 22.0 dB returnloss. LB5 / HB5 will need to be adjusted in conjunction with the antenna port adjustment.

This process is best done when looking at both the low band and high band sides of theduplexer, as there is some interaction between the two.

The input ports are also adjustable which can be used to increase the return loss with minoradjustment of the connector, in conjunction with LB1 / HB1.

If the connector has been adjusted, ensure the locking nut is retightened.

Note: It is recommended to use a torque value of 4 Nm for the locking nut, and 1 Nm for theconnector.

Appendix D: Pin-out Information



G.703 TerminationDB-25 Tributary Identifier 120 ohm 75 ohm

Pin Name Pair/Colour Name1 Ground Shield Shield Shield

1634

Trib 1 OutGnd

Out TipOut Ring

DrainBlackRed

BraidTip

Braid1967

Trib 2 OutGnd

Out TipOut Ring

DrainBlackWhite

BraidTip

Braid229

10Trib 3 Out

GndOut TipOut Ring

DrainBlackGreen

BraidTip

Braid251213

Trib 4 OutGnd

Out TipOut Ring

DrainBlackBlue

BraidTip

Braid14152

Trib 1 InInTip

In RingGnd

BlackYellowDrain

BraidTip

Braid17185

Trib 2 InInTip

In RingGnd

BlackBrownDrain

BraidTip

Braid20218

Trib 3 InInTip

In RingGnd

BlackOrangeDrain

BraidTip

Braid232411

Trib 4 InInTip

In RingGnd

RedWhiteDrain

BraidTip

BraidShell Chassis Shield Shield Shield

Alarm TerminationDB 15 Pin Connection Description

1,2 Alarm input 13,4 Alarm input 2.5,6 Alarm relay o/p 27,8 Alarm relay o/p 1

9 -15 Not used.




Standard EOW Handset ConnectionRJ 11 Pin Connection

1 Microphone2 Microphone return3 Earphone4 Earphone return

Connecting the 4-wire EOW OptionFunction Interface 2 DB25 (female) Interface 3 DB9 (female)Send Audio 4 7Send Audio 3 2Receive Audio 8 1Receive Audio 6 6Press-to-talk 5 8Press-to-talk 2 3Calling Alert NO 22 9Calling Alert NC 20 4Ground 7 5

EOW G.703 64 kbps Co-directional ConnectionEOW IN EOW OUT

Tx a 4 Tx a 1Tx b 9 Tx b 6Rx a 1 Rx a 4Rx b 6 Rx b 9

Data Service Channel ConnectionsFunction Interface 3 DB9 (female)GND 5RD 2TD 3RTS 7CTS 8DSR 6DCD 1DTR 4RI 9F GND Shield



DC Power Connection

GeneralThe recommended wire gauge to connect DXR 100 to the power supply depends on the distancebetween the supply and terminal. Guidelines for the maximum cable run using copper wire areshown below:

48 Volt Supply 24 Volt SupplyWire Size Metres

(Maximum)Feet (Maximum) Metres

(Maximum)Feet (Maximum)

1.5 mm2 (16 AWG) 2.5 9 1.3 4.5

2.5 mm2 (13 AWG) 5.3 17 2.5 8.5

4 mm2 (11 AWG) 8.3 27 4 13.5

6 mm2 (10 AWG) 12.3 40 6 20

We recommend that you use 7 strand cable with tough PVC insulation and that you complywith the accepted practice of using black or blue cable for negative, red cable for positive andgreen cable for earth.

Note: If a wire that is a heavier gauge than 6 mm2 is required, terminate the power leads at aterminal block near the terminal and complete the connection from the terminal blockto the terminal using a maximum of 6 mm cable.

Pin Out Information

DB3 Pin Power Input Cable ColoursA1 Positive DC input RedA2 Chassis Ground - can be strapped to A1 or

A3 for positive or negative ground systems.Green

A3 Negative DC input Black

Appendix E: Windows Dial -up Networking



Appendix E: Windows® “Dial-up”Networking

Connecting to a SMA or NMS BoardThis appendix details how to set-up Windows® “Dial-up” Networking for direct NMSconnections to either a SMA or DXR 100 NMS board.

DXR NET uses Windows® “Dial-up” Networking to make an NMS connection to a SMA orDXR 100 NMS board. From the user perspective, this type of connection appears to be via a“Dial-up” modem.

These procedures are written for Windows 98 users, but Windows 95 is similar.

Installing Windows® “Dial-up” NetworkingTo install Windows® “Dial-up” Networking on your PC, boot-up your PC and proceed asfollows:

Step 1: Select the Start button.

Step 2: Select Settings, Control Panel from the Start button menu.

Step 3: Select the Add/Remove Programs icon from the Control Panel window.

Step 4: Select the Windows Setup Tab from the Add/Remove Programs Properties box.

Step 5: On the Windows Setup page, select Communications from the Components list.

Step 6: Select Details, then select Dial-up Networking and Phone Dialler, then the OK button.

Step 7: Select the OK button in the Windows Setup page.

Step 8: Select the OK button in the Add/Remove Programs Properties box.

Step 9: Select File, Close in the Control Panel window.

Installing DMC DXR Driver UtilityFor the direct NMS connection to a SMA or NMS board the DMCDXR driver utility isinstalled in place of the modem driver:

Step 1: Select the Start button.

Step 2: Select Settings, Control Panel from the Start button menu.



Step 3: Select the Modems icon from the Control Panel window.

Step 4: Select the Add button on the General page.

Step 5: Select Other Type Modem, then Next.

Step 6: Select Don’t Detect, then Next.

Step 7: Select Have Disk, and use Browse Program Files to find dmcdxr.inf, then select OK.This driver should be in the drivers directory, under the directory where DXR NET

was installed.

Step 8: Select "DMC Direct Connection (38400 bps)", and the COM port you will be using,then OK, then Next.

Step 9: Wait while the driver is installed.

Step 10: Select Finish, Close.

Step 11: Select File, Close in the Control Panel window.

Starting Windows® “Dial-up” Networking for the First TimeStep 1: Select the Start button.

Step 2: Select Programs, Accessories, Dial up Networking, from the Start button menu.

Step 3: Select Make New Connection.

Step 4: Type a name, such as "DMC DXR Connection".

Step 5: Select device called "DMC Direct Connection (38400bps)", and select "Configure".

Step 6: Select the required COM port, then OK, then Next.

Step 7: Type any number in the area code and telephone number.

Step 8: Select the correct Country Code, then select Next, Finish.

Step 9: Right click on your new connection (named in Step 4), then select Properties.

Step 10: Select Server Type button. If required, set the defaults to PPP (Point-to-PointProtocol) and your operating system (Windows 95, 98 or NT 3.5, etc).

Step 11: If required, set the Advanced Options Group settings Logon to Network and RequireEncrypted to Off, and the Enable SW Comp setting to On.

Step 12: If required, set the Allowed Protocols Group to TCP/IP only.

Step 13: Select the "TCP/IP setting s" button and select Server Supplied IP address.

Step 14: Select OK until returned to the Dial-up Networking screen, then File, Close.



Appendix F: Correctable Bytes per Second

The following table shows recommended values for each radio type and capacity. An error rateof 1 x 10-6 is shown.

Radio Capacity Link Data RateMbit/S

Bit Error Rate1E-6

For DXR 1004 x E1 9.728 102 x E1 4.864 51 x E1 2.432 2

4 x DS1 7.926 82 x DS1 3.648 41 x DS1 1.824 2

For DXR 700

1 x STM-0 60.441 601 x DS3 51.875 52

2 x E3 79.836 801 x E3 40.769 41

16 x E1 40.762 418 x E1 19.747 204 x E1 9.792 102 x E1 5.01 5

16 x DS1 30.731 318 x DS1 14.887 154 x DS1 7.382 72 x DS1 3.867 4

Table 1: Acceptable bit error rate numbers

Appendix G: IP Network Addressing Example



Appendix G: IP Network AddressingExample

ExplanationThis section covers the design of the NMS for a DXR 100 with NMS network. The examples are based onSMAs, and where major difference exists, theses are highlighted.

NMS Board IP Network DesignEach device in the network requires its own address. This includes the PCs that are used toconfigure, monitor and manage the network. To enable the flow of the IP management trafficfrom NMS BOARD to NMS BOARD, each NMS board has a routing table, that allows theNMS board to route any IP traffic on in the correct port towards the packet's destination.

When a PC is plugged into the V.24 port on the NMS board, the NMS board defines an addressto enable DXR NET software to communicate with the NMS board, allowing the user toconfigure the NMS board.

The challenge increases when a user plugs into an NMS board, and tries to work with remoteNMS boards. If the local NMS board created the PC's IP address, it is unlikely that other NMSboards will have the new PC in its routing table, to allow the return of the result of anoperation from the PC.

To avoid this problem, a set of guidelines for IP networking has been created. If this isfollowed, a user in the network can plug into any NMS board and manage elements across thenetwork, and the addition of new NMS boards to the network will not require entries in therouting table of every NMS board.

The concept is based on sub-nets, and every NMS board is in a group (a sub-net), and all otherNMS boards know the correct interface to send traffic towards that sub-net. Within the sub-netthe addresses of all NMS boards in the sub-net are known, and every NMS board has anaddress for the local PC port, which is associated with the NMS boards address.

When a PC is plugged into an NMS board, the route is known to all other NMS boards, if theNMS board is known! When more NMS boards are added, they are added to an existing group,so only NMS boards in the sub-net need any table additions. The other major benefit of groupsis that the number of entries in the routing table is minimised, making it quicker to configure theNMS board.

Addresses and Sub NetsEach sub-net is identified by the 2nd octet, and each NMS board is identified by the 3rd octet,and the last octet is used within the NMS board - for the PC port, and itself.



To specify a sub-net, IP addressing uses a "mask". The mask tells the NMS board softwarewhat part of the address is to be used. An example:

If you live at: 35 My Street, in Suburbia, Metropolis, in the country Southern Land, letterssorted in another country only need to know that it is destined for Southern Land- the otherinformation is of no interest to the mail sorter at that time.

When the letter arrives in your country, the mail sorter looks at the country- yes, this is mycountry, if this is the right city, if not, send it to the city. If it is the right city, they notice thesuburb. The letter may then go towards the suburbs' sorting area, where the correct mail slotfor the postman is found, based on the street. The mailman will then sort the addresses basedon how he walks the delivery round. At each stage, the sorter only looked at the level of detailthat got the letter closer to the destination- the higher and lower levels of detail were not used.

In an IP network, this can be done as well, using the sub-net mask. An IP address is brokeninto octets, such as 10.5.17.12. (The left most octet is the highest level, it would be the countryin the address example). By using a mask in a routing table, the software can be told whichparts to use when deciding how to route any packet. To look at all the information, the mask isset to 255.255.255.255. (255 is represented as 11111111 in binary, meaning all bits in the octetaddress are to be looked at). To look at all of the address except the last octet, which would bethe addresses of the NMS board, the mask would be set to 255.255.255.0. Numbers other than255 are useable, but the added complexity is not required in an NMS board network.

The NMS board AddressWhen an NMS board is new, the IP address is 192.168.3.2. DMC recommend you change thisas the first step to setting up an NMS board. NMS boards should not be connected to othernetworks, such as the internet or a business network, as they are designed to work together as aradio network only. The suggest addressing scheme is based on this assumption.

The address range we recommend is 10.0.0.1 to 10.255.255.255. This will provide for up to255 sub-nets, each up to 255 NMS boards!

The second octet can be used for your NMS board sub-nets addresses. All NMS boards in thesame group will have the same value in this octet.

The next third octet will determine the individual NMS board, and the last octet is used for theNMS board itself, and the PC that may attach to the NMS board setup port for example.

Examples of NMS board IP addresses10.1.1.1 NMS board number 1 in sub-net 1

10.1.1.2 The PC attached to the setup port on the above NMS board

10.1.21.1 NMS board number 21 in sub-net 1

10.2.25.1 NMS board number 25 in sub-net 2

Setting up NMS board in a single sub-net group.This example has 4 NMS boards, all to be in a single sub-net group.




Each NMS board will have address from :

• 10.1.1.1

• 10.1.2.1

• 10.1.3.1

• 10.1.4.1.

In the routing table, the last octet is changed to a 0, and the mask for these entries will be255.255.255.0, and a destination interface of V.24 SETUP

Each routing table will have the addresses for all the other NMS boards in the group.

10.1.1.1 10.1.1.0 255.255.255.0 V.24 SETUP10.1.2.0 255.255.255.0 Radio10.1.3.0 255.255.255.0 Radio10.1.4.0 255.255.255.0 Radio

10.1.2.1 10.1.2.0 255.255.255.0 V.24 SETUP10.1.1.0 255.255.255.0 Radio10.1.3.0 255.255.255.0 NMS in10.1.4.0 255.255.255.0 NMS in

10.1.3.1 10.1.3.0 255.255.255.0 V.24 SETUP10.1.1.0 255.255.255.0 NMS out10.1.2.0 255.255.255.0 NMS out10.1.4.0 255.255.255.0 Radio

10.1.4.1 10.1.4.0 255.255.255.0 V.24 SETUP10.1.1.0 255.255.255.0 Radio10.1.2.0 255.255.255.0 Radio10.1.2.0 255.255.255.0 Radio

Note that all last digits in a routing table are zero.

Deciding on the number of sub-netsThe size of the sub-net group is determined by a number of factors, but three will have a verylarge influence:

NMS 2

NMS 3

NMS In

NMS out

NMS 1

NMS 4

RADIO

RADIO



• the routing table can only have 50 entries

• too many or too few groups will make the number of entries required to be entered (byhand) to be more than is required

• In fact, the topology of the network determines how the network should be grouped

Some rules of thumb can be used- don’t have more than 10 NMS boards per group if it can behelped, and use the square root of the number of NMS boards as a guide to groups and groupsize. Another rule is that the last digit in the routing tables should always be a 0, and that noNMS board should have 0 in any octet.

Examples of groups for sub-nets.In this example the above network will grow to be 10 NMS boards, with all links added fromNMS board 10.1.4.1.

The square root of 10 is 3.3, so three sub-nets, each of 3 (one of 4) is a good choice.

The network will be broken into three sub-nets. The original sub-net will remain as one, andtwo new will be added.

The network will look like:

The existing NMS boards will require two new entries, which are shown in the following table,showing the routing tables for all NMS boards. The routers are all uniquely identified by theNMS board number, as there are only 10, so in this case the use of the sub-nets was notrequired, but made the routing tables shorter than would be if they were not sub-net worked.

10.1.1.1 10.1.1.0 255.255.255.0 V.24 SETUP10.1.2.0 255.255.255.0 Radio10.1.3.0 255.255.255.0 Radio10.1.4.0 255.255.255.0 Radio10.2.0.0 255.255.0.0 Radio ⇐ New Group10.3.0.0 255.255.0.0 Radio ⇐ New Group

10.1.2.1 10.1.2.0 255.255.255.0 V.24 SETUP10.1.1.0 255.255.255.0 Radio10.1.3.0 255.255.255.0 NMS in10.1.4.0 255.255.255.0 NMS in10.2.1.0 255.255.0.0 NMS in ⇐ New Group10.3.1.0 255.255.0.0 NMS in ⇐ New Group

10.1.3.1 10.1.3.0 255.255.255.0 V.24 SETUP10.1.1.0 255.255.255.0 NMS out10.1.2.0 255.255.255.0 NMS out

NMS 2 NMS 1

NMS 4NMS 3

NMS in

NMS out

Sub-net "1"

NMS 6

NMS 5 NMS 7

Sub-net "2"

NMS 10

NMS 8 NMS 9

Sub-net "3"




10.1.4.0 255.255.255.0 Radio10.2.0.0 255.255.0.0 Radio ⇐ New Group10.3.0.0 255.255.0.0 Radio ⇐ New Group

10.1.4.1 10.1.4.0 255.255.255.0 V.24 SETUP10.1.1.0 255.255.255.0 Radio10.1.2.0 255.255.255.0 Radio10.1.3.0 255.255.0.0 Radio10.2.0.0 255.255.0.0 NMS in ⇐ New Group10.2.0.0 255.255.0.0 NMS in ⇐ New Group

10.2.5.1 10.2.5.0 255.255.255.0 V.24 SETUP ⇐ New NMSboard

10.2.6.0 255.255.255.0 Radio10.2.7.0 255.255.255.0 NMS in10.1.0.0 255.255.0.0 NMS out10.3.0.0 255.255.0.0 NMS in


10.2.5.0 255.255.255.0 Radio10.2.7.0 255.255.255.0 Radio10.1.0.0 255.255.0.0 Radio10.3.0.0 255.255.0.0 Radio


10.2.5.0 255.255.255.0 NMS out10.2.6.0 255.255.255.0 NMS out10.1.0.0 255.255.0.0 NMS out10.3.0.0 255.255.0.0 Radio


10.3.9.0 255.255.255.0 NMS in10.3.10.0 255.255.255.0 NMS in10.1.0.0 255.255.0.0 Radio10.2.0.0 255.255.0.0 Radio


10.3.8.0 255.255.255.0 NMS out10.3.10.0 255.255.255.0 Radio10.1.0.0 255.255.0.0 NMS out10.2.0.0 255.255.0.0 NMS out


10.3.8.0 255.255.255.0 Radio10.3.9.0 255.255.255.0 Radio10.1.0.0 255.255.0.0 Radio10.2.0.0 255.255.0.0 Radio

Planning the NMS board networkWhen designing the NMS board network, future growth should be anticipated to avoid havingto add entries to a large number of NMS board's routing tables. When an NMS board is addedto a group, only the NMS boards in that group need the new entry. The smaller the groups, theeasier it is to add NMS boards. If the trend is to be adding large numbers of NMS boards in thefuture, the creation of a number of groups for future use can be anticipated, if the general



location of the group can be determined. Groups without NMS boards do not cause a problem,as no traffic is routed to them. The only limitation the size of the routing table, but this is notlikely to be a problem if the largest network size is estimated, and enough sub-nets are createdat the beginning.

Appendix H: Setting up Links with NMS Boards



Appendix H: Setting up Links with NMSBoards

Setting Up a NMS board with a Single Link

Planning StepsStep 1: Draw the network diagram.

Step 2: Label each NMS board with a number.

Step 3: Assign each NMS board an IP address, based on the number given to it in Step 2.

Draw the network diagramSee the example in previous appendix.

Label the NMS boards

Try to give each NMS board a different number, even if it is already in a different sub-net.

Assigning an IP address to each NMS boardThe default NMS board address is 192.168.3.2. Choose a new address, eg, 10.1.1.1 for the firstNMS board, and 10.1.2.1 for the second. Refer to Setting the NMS board IP Address in Section6 for how to set the NMS board addresses.

Note: The 3rd octet in the address denotes the NMS board number.

Connecting the DXR NET PC to the NMS boardPlug the DXR NET PC into the SETUP port on the NMS board, and access the NMS board.Refer to Connecting to the Radio Network in Section 3 for details.

Set the NMS board IP address

ProcedureStep 1: Select the Configuration Menu in the menu bar.


Step 3: Double-click on NMS board IP address, then type in the new address.




Step 5: Click OK, then "Hit write to radio" button, then Start.

Step 6: When the address has been updated, hit finish.

Code the routing tableThere are two items to be coded, the address of the V.24 port, and the address to the other NMSboard.

Note: In the Interface column drop-down menu, select V.24 for the port.



Step 3: Use the Insert key to enter a line into the table.

Step 4: Take the NMS board IP address, make the last field in the address 0, then double-click on the first Destination IP Address field and type in the IP address of the Setupport.

Step 4: Double-click in the Mask Address IP column, and type in 255.255.255.0,

Step 5: Double-click in the Interface column and select V.24 from the drop-down menu.

Step 6: Use the Insert key to enter a second line into the table.

Step 7: Take the IP address of the second NMS board, make the last field in the address 0,then double-click on the Destination IP Address field and type in the IP address of thesecond NMS board.

Step 8: Double-click in the Mask Address IP column, and type in 255.255.255.0.

Step 9: Double-click in the Interface column and select Radio from the drop-down menu.

Step 10: After you have finished making your changes, select the Commit button in theToolbar, and Write to the NMS board.

Connect to the second NMS boardPlug DXR NET PC into the V.24 port on the second NMS board, and "connect".

Set the next NMS board IP Address

ProcedureStep 1: Select the Configuration Menu in the menu bar.





Step 3: Double-click on NMS board IP address, then type in the NMS board address.


Step 5: Click OK, then "Hit write to radio" button, then Start.

Step 6: When the address has been updated, hit finish.

Code the other routing tableAgain, there are two items to be coded, the address of the SETUP port, and the address to theother NMS board.



Step 3: Use the Insert key to enter a line into the table.

Step 4: Take the NMS board IP address, make the last field in the address 0, then double-click on the first Destination IP Address field and type in the IP address of the Setupport.

Step 4: Double-click in the Mask Address IP column, and type in 255.255.255.0,

Step 5: Double-click in the Interface column and select V.24 from the drop-down menu.

Step 6: Use the Insert key to enter a second line into the table.

Step 7: Take the IP address of the second NMS board, make the last field in the address 0,then double-click on the first Destination IP Address field and type in the IP addressof the second NMS board.

Step 8: Double-click in the Mask Address IP column, and type in 255.255.255.0.

Step 9: Double-click in the Interface column and select Radio from the drop-down menu.


You can now use DXR NET across the link.

Setting Up a NMS board with Multiple LinksThis is much the same process as creating a single link, but shows the process for multiple linksfrom a single NMS board.



Assign the IP address of the new NMS boardThe IP address could be 10.1.3.1. This is for the third NMS board, in the same network.

Set the NMS board IP address of the New NMS boardAs for the first NMS board, use DXR NET to set the IP address, and write it to the radio.

Code the routing table in the New NMS boardStep 1: Code the IP address of the V.24 port (eg. 10.1.3.0, mask 255.255.255.0, destination

V.24).

Step 2: Code the IP address of the first and second NMS boards (eg. 10.1.1.0, mask255.255.255.0, destination NMS In, 10.1.2.0 mask 255.255.255.0, destination NMSin)

Step 3: Add entries to the Routing Table for the first and second NMS boards, to ensure eachNMS board knows where the new NMS board is located in the network. (eg. in NMSboard 1, code the routing table 10.1.3.0, mask 255.255.255.0 destination AUX A, inNMS board 2 code the routing table 10.1.3.0 mask 255.255.255.0 destination AUXB)

100 install & ops manual

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