manual sistem telemetric

1328 Parkway Court • Beavercreek • OH • 45432 Phone: (937) 426-2703 • Fax: (937) 426-1125 • E-Mail: [email protected]

Visit us on the web at http://www.NexSens.com

iSIC – Intelligent Sensor Interface for Control Operations Manual and Reference Guide

Version 05.03.08

NexSens Technology, Inc.

iSIC User’s Manual


iSIC User’s Manual 1

TABLE OF CONTENTS

1 Introduction............................................................................................................................ 3

2 Principles of Operation.......................................................................................................... 5 2.1 External iSIC Components ............................................................................................. 5 2.2 Internal iSIC Components............................................................................................... 6 2.3 iSIC Specifications.......................................................................................................... 8

3 Telemetry Options ................................................................................................................ 10 3.1 iSIC Direct to PC Telemetry......................................................................................... 10 3.2 2100-iSIC Landline Modem Telemetry........................................................................ 12 3.3 3100-iSIC Cellular Modem Telemetry ......................................................................... 14 3.4 4100-iSIC Spread Spectrum Radio Telemetry ............................................................. 16

4 Sensor Wiring....................................................................................................................... 21 4.1 RS232............................................................................................................................ 21 4.2 SDI-12........................................................................................................................... 22 4.3 Analog mV Sensors ...................................................................................................... 24 4.4 Analog 4-20 mA ........................................................................................................... 26 4.5 Rain Gauge Input .......................................................................................................... 28

5 iChart Setup and Operation................................................................................................. 29 5.1 Creating a Database for Your Sensors .......................................................................... 29 5.2 Configuration for RS232 Sensors ................................................................................. 30 5.3 Configuration for SDI-12, 4-20 mA and Analog mV Sensors ..................................... 37

6 Field Deployment ................................................................................................................. 46 6.1 Mounting the iSIC......................................................................................................... 46 6.2 Powering the iSIC......................................................................................................... 48 6.3 Mounting Antennas....................................................................................................... 50

7 Maintenance......................................................................................................................... 53

Appendix....................................................................................................................................... 54 Appendix A: Safety .................................................................................................................. 54 Appendix B: Warranty and Service .......................................................................................... 55 Appendix C: Options and Accessories ..................................................................................... 56 Appendix D: Choosing the Proper Antenna ............................................................................. 57 Appendix E: Connecting Specific Sensors ............................................................................... 59 Appendix F: iSIC Systems with Expansion.............................................................................. 60 Appendix F: Programming the 3100-iSIC................................................................................ 70



1 Introduction About NexSens Technology, Inc. NexSens Technology, Inc. was started in the 1990s with a mission to advance the capabilities and simplify the development of environmental monitoring systems. Our main focus is on the creation of easy-to-use computer software and powerful communications equipment to provide advanced remote data acquisition and datalogging services.

iChart is an easy-to-learn, easy-to-use Windows based software program designed to work with popular environmental monitoring sensors and systems. A large multi-vendor instrument library makes setup quick and easy. iChart automates all of the tedious programming, data collection and manual data processing common with other environmental data collection systems.

Remote data acquisition services have been developed specifically with unattended monitoring applications in mind. Our 2100 land-line modem, 3100 cellular modem, and 4100 spread spectrum radio provide real-time access and 2-way communication with remote environmental monitoring devices.

The NexSens iSIC (Intelligent Sensor Interface and Control) is a state-of-the-art datalogger that simplifies the collection of real-time data from environmental sensors and monitoring instruments. It includes support for multi-vendor sensor connections and is fully compatible with NexSens communication equipment and software.

How to Use This Manual This manual is designed to provide you with instructions for getting started and contains detailed reference information on the operation of the NexSens iSIC, 2100, 3100, 4100, and 4200 Telemetry. As with any new product, it is a good idea to read the documentation thoroughly before attempting to setup and operate.

This manual should provide you with the information needed to use an iSIC in your system. If you experience difficulty, we suggest you follow the procedure below:

· Review the subject in the manual.

· Check for software updates using the Check for Updates from the Help Menu in iChart.

· Review the Frequently Asked Questions (F.A.Q.) on the NexSens web page: http://www.nexsens.com/support/faq.htm

If you are still having difficulty, email your technical support question to: [email protected]



Unpacking and Inspection Before you setup your iSIC Datalogger, take a few minutes to insure that all equipment is present and un-damaged. Among the items included with the iSIC are:

iSIC RS232 programming cable 8 A-Hr 12V internal iSIC battery Five desiccant bags Resistor pack (includes four 56Ω resistors) iSIC instruction manual Two feed-through gland fittings

Some versions of the iSIC may come with a number of additional accessories. Among the options:

26 A-Hr 12V iSIC battery. AC float charger. Stainless Steel Enclosure

Be sure to check for all signs of visible damage due to shipping – cracks in the enclosure, damage to the enclosure’s seal. If any damage is present, please call a NexSens customer service representative.



2 Principles of Operation 2.1 External iSIC Components

The enclosure that houses the NexSens iSIC PCB, wiring, and battery is a durable NEMA 4X enclosure. It measures 12” x 8” x 7” (inches) and is constructed of heavy-duty fiberglass.

This enclosure is certified for both indoor and outdoor use. Falling dirt, rain, sleet, snow, windblown dust, splashing water, hose-directed water, and corrosion will not damage the enclosure. In addition, the box will be undamaged by the formation of ice on the enclosure.

A number of connectors are located externally on the iSIC enclosure:

Expansion Plugs - Can be replaced with conduit or half-inch gland fitting for connecting sensors to the internal data terminal pins. Two gland fittings are supplied with each iSIC to allow cables to enter the inside of the iSIC enclosure.

Vent – Vent made of Gortex material to allow air to pass and keep moisture out.

MS8 – Allows for the connection of RS232 Port 0 or RS485.

RF Connector – Connector for RF cable to radio antenna.

Ground Lug – Connector for copper ground wire from A38 ground kit.

MS2 – External connector for solar power or float charger.



2.2 Internal iSIC Components

A number of connectors are located internally on the iSIC enclosure:

Expansion Plugs – A number of connectors are located internally on the iSIC enclosure. These allow an interface to the multitude of sensors in your system. An iSIC datalogger allows 4 RS232 devices, RS485 devices, 8 analog inputs, a tipping bucket rain gauge, and 10 SDI-12 sensors to be connected at a single time. These numbers can be further increased with expansions. See the following pages for more information.

Internal Battery – The NexSens iSIC comes standard with a sealed rechargeable lead acid 12V 8A-hr battery. Recharging is possible through the use of a float charger or solar panel equipment.

Fuses – Two fuses are located on the left edge of the plate inside the iSIC enclosure. The top fuse connects to the internal battery. The bottom fuse connects to the charger/external power. These are 3A time delay speed type fuses, rated for 250VAC.



Digital and Analog Connectors Two 16-pin un-pluggable terminal strip connectors are located inside the enclosure. Power and sensors will be connected to these terminals. The connector on the left is for connecting digital and smart sensors. The connector on the right is for connecting analog sensors. Descriptions for the pins on both connectors are given below:

A factory installed option for analog, digital, and galvanic dissolved oxygen sensor expansion is available. The interface connections for expansion are located behind the battery.

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

Digital Connector

SDI-12: Connection for SDI-12 sensors. SW.A: 12V, 200 mA power switch. BAT: Pass-through battery power pin (fused) GND: Ground (digital) P1.Rx: RS232 Receive Pin (Port 1) - Input P1.Tx: RS232 Transfer Pin (Port 1) - Output P2.Rx: RS232 Receive Pin (Port 2) - Input P2.Tx: RS232 Transfer Pin (Port 2) - Output P3.Rx: RS232 Receive Pin (Port 3) - Input P3.Tx: RS232 Transfer Pin (Port 3) - Output DIO0: General purpose Digital I/O. DIO1: General purpose Digital I/O. Rain: Tipping bucket rain gauge input

Analog Connector

Tip: Telephone wire connection pin Ring: Telephone wire connection pin Ex.5V: 5V Excitation voltage AD0 – AD7: Analog Inputs AGND: Analog ground DA0: Digital to Analog output Expansion Connector

See Appendix F: iSIC System with Expansion Connector for wiring.



2.3 iSIC Specifications Analog Inputs Standard: 4 differential or 8 Single-Ended Optional: 4 differential or 8 Single-Ended additional

0-2.5V auto range. 12-bit resolution. Analog Outputs Two 12-bit channels

0-5V or 0-2.5V Programmable Pulse Counters One tipping bucket counter, max rate: 12Hz Digital I/O Ports Two standard generic I/O ports, two additional optional SDI-12 Interface One SDI-12 port, v1.2 compatible Can be configured as master or slave RS232 Interface Four RS232 ports, two additional optional RS485 Interface One RS485 port Can be configured as input or output Internal Memory Flash memory – 512k System Power Requirements Voltage: 10.7V to 16VDC Typical Current Draw 1 mA sleep, 8 mA processing, 36 mA analog measurement Battery 12V internal battery Temperature Range -20°C to +60°C Landline Modem Telemetry Data Transfer Rate 33.6 Kbps V.34 Power Requirements 139mA transmit/receive, <1mA power off Error Correction V.42, NMP-4 Cellular Modem Telemetry Data Transfer Rate 19.2Kbps Power Requirements 30mA receive 280mA transmit 600mW transmit Frequency Range 824 to 849 MHz transmit 869 to 894 MHz receive RF Protocol CDPD 1.1 Spread Spectrum Radio Telemetry Data Transfer Rate 115.2 Kbps Power Requirements <1mA power off, 21mA idle 86mA receive 500mA transmit Frequency Range 900-928 MHz Communication Range 5 miles line of sight, extended range with repeaters Error Correction 32-bit CRC auto re-transmit



Dimensions: (NEMA 4X Enclosure): 12” x 8.5” x 6.95” (inches)



3 Telemetry Options 3.1 iSIC Direct to PC Telemetry The NexSens iSIC supports direct connect communication between a remote monitoring site and a computer base station. It is the most desirable system for a monitoring site that is under 250ft away from the monitoring station, and where a cable can easily run between the two.

Shown below is an example remote site:

The above system consists of the following components:

1. PC running iChart Software 2. RS232 Direct Connect Cable 3. iSIC Datalogger 4. A22 20-Watt Solar Panel



Communicating to an iSIC Before your PC can begin to receive real-time data from the iSIC, a RS232 Direct Connect Cable must be connected into the iSIC enclosure.

Important: Always remove power from all NexSens communications devices when wiring to the iSIC.

NexSens supplies a variety of RS232 Direct Connect Cable lengths ranging from 25 ft to 250 ft. For shorter distances you may use an A72 RS232 Direct Connect cable to communicate with the iSIC. This cable simply requires connecting the iSIC DB9 connector to the PC COM port. For longer lengths A60 –A64 Cables will need to be used. These cables require a DB9 dongle and gender changer as shown below:

Wire the RS-232 direct connect cable to the dongle.

Color Dongle DB9-F Signal

White Terminal 2 Pin 2 Rx Blue Terminal 3 Pin 3 Tx Green Terminal 5 Pin 5 GND

Secure the DB9 dongle to the gender changer.

Tighten with screwdriver



3.2 2100-iSIC Landline Modem Telemetry The NexSens 2100-iSIC Landline Modem supports telephone communication between a remote monitoring site and a computer base station. It incorporates a NexSens iSIC that controls the landline modem and monitoring instruments on the communication network.



1. Analog Telephone Line Connection 2. PC running iChart Software 3. 2100-iSIC Landline Modem with Datalogger 4. Analog Telephone Line Connection 5. A22 20-Watt Solar Panel 6. Environmental Monitoring Instruments



Communicating to a 2100-iSIC Before your PC can begin to receive real-time data from the 2100-iSIC Landline Modem, a telephone wire must be connected into the modem.

Important: Always remove power from all NexSens communications devices when wiring or connecting antennas and accessing the internal connectors.

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

Telephone Outlet

Strip one end of a telephone cable so that the inner wires are exposed. Strip the tip and ring wires of the telephone cable. As shown above, one wire is connected to Ring on the analog connector and the other is connected to Tip. It does not matter which wire goes to Ring and which goes to Tip but they must be the tip and ring wires of the telephone cable. Plug the other end of the telephone wire into a phone jack.

The tip and ring of the standard RJ11 telephone jack are colored red and green. The other two colors used in RJ11 connectors are yellow and black and do not need to be used. These are the standard coloring of telephone cables commercially available for households. For larger telephone jacks or connections a different wiring may be used.



3.3 3100-iSIC Cellular Modem Telemetry The NexSens 3100-iSIC Cellular Modem supports digital and analog cellular communication between a remote monitoring site and a computer base station. It incorporates a NexSens iSIC that controls the cellular modem and monitoring instruments on the communication network.

Note that digital and analog cellular technology offers a comprehensive coverage area but there are areas of North America that are not covered. Be sure to verify coverage of the cellular technology you will be using before the 3100 Modem is installed.



1. Internet or Phone Line Connection (depending on cellular technology type) 2. PC running iChart Software 3. A48 Yagi Directional Antenna, Cellular Frequency 4. A22 Solar Panel, 20-Watt 5. 3100-iSIC Cellular Modem and Datalogger 6. Sensor Cable 7. Environmental Sensor



Communicating to a 3100-iSIC The 3100 Modem is supplied with a short RF cable pigtail with an N-Style connector. The connector plugs into an A39 Lightning Protector. Mount the Lightning Protector below the enclosure and install an A31, 10ft or A32, 20ft RF cable.

NexSens supplies three types of antennas for cellular applications:

A40 Omni Directional Antenna – 5dBd gain, tuned for cellular frequencies. This antenna receives and transmits in any direction and is the preferred antenna for most cellular applications.

A45 Yagi Directional Antenna – 10dBd gain, tuned for cellular frequency. This antenna receives and transmits only in the direction that it is pointed. It should only be used in situations where the cellular signal is weak. The location of the nearest cell tower should be determined before installing the antenna.

A48 Unity Gain Antenna – a unity gain antenna sends the maximum signal above the horizon at a high angle. It is an excellent choice for areas where there are tall buildings or mountains.



3.4 4100-iSIC Spread Spectrum Radio Telemetry The NexSens 4100-iSIC Spread Spectrum Radio system provides a convenient means of communicating and collecting real-time data from remotely deployed monitoring instruments. The NexSens 4100 radio uses 900MHz spread spectrum radio technology and allows hundreds of remote sites, each one with a unique programmed address, to be implemented in a single system. Below is an example remote site:

The above system consists of the following equipment:

Base Station

1. A41 Omni-Directional Antenna, Spread Spectrum Frequency 2. 4100-Base Radio 3. PC running iChart Software · A31 RF Cable, 10 ft · A38 Ground Kit (not shown) · A39 Gas Discharge Lightning Protection (not shown)

Field Station

4. A46 Yagi Directional Antenna, Spread Spectrum Frequency 5. A22 20-Watt Solar Panel 6. 4100-iSIC Spread Spectrum Datalogger 7. Sensor Cable 8. Environmental Sensor · A31 RF Cable, 10 ft · A38 Ground Kit (not shown) · A39 Lightning Protection (not shown) · A55 Pole Mount Kit (not shown)



Communicating to 4100-iSIC Systems NexSens offers two solutions for communicating to 4100-iSIC systems: 4100-base and 4200 radio to phone telemetry.

The 4100-base system works like the image below. The 4100-base radio is connected directly to a computer via a RS232 cable. This radio then communicates to all the 4100-iSIC dataloggers in your system. This system is ideal when the base station can be located close to a computer running iChart and AC power.

The 4200 radio to phone system works like the image below. The 4200 radio to phone station is connected to a land line phone line. A computer at your office is then connected to a phone line as well. The computer then communicates to the 4200 radio via the phone line and then the 4200 in turn communicates to all the 4100-iSIC dataloggers in your system. This system is ideal when the base station can be located near a phone line but not a computer running iChart and AC power.



iSIC Addressing Multiple 4100-iSICs can be used in a system that incorporates a single 4100-Base Station or 4200-Radio to Phone Station. Doing so is as simple as assigning each device with a unique address. Every 4100-iSIC must have an address that is different from all the other radios in your monitoring network. iChart software will then use these addresses to communicate to the iSIC and the sensors that are physically connected to it. By default, every iSIC has an address of “1”.

Apply power to the 4100-iSIC by connecting the red and black battery leads inside the 4100 or connect the A11 Battery Float Charger if you will be using AC power for your system. Then connect one end of the RS232 Programming Cable (supplied) to your PC’s serial port. Plug the other end of the cable into the DB9 connector located inside the iSIC.

In the iChart software, select Advanced | iSIC | Program iSIC from the file menu. Note: You will need to close any open iChart databases when using this option.

This will open the iSIC Setup menu. It should be noted that the 4100-iSIC cannot communicate directly to a computer unless specified to do in the iSIC Setup menu, as it is default to communicate via spread spectrum radio instead of direct connect to PC.



Check the COM Port field. If the RS232 cable connecting the iSIC to the computer is located on a port other than COM1; click on COM Port Setting and select the correct COM port. All other configuration settings can remain as 9600 baud N81. Next select Direct connect from the Connection drop-down menu if it is not already selected. Finally the iSIC Address field can be left at the default of ‘0’. Make sure the Connect through another iSIC box is unchecked. Once the above configuration has been set correctly, click on the Connect button.

Cycle the iSIC by disconnecting one battery terminal on the iSIC for a few seconds and then reconnecting it. Make sure no solar panels or other external power devices are connected as well.



After cycling power, the iSIC Setup dialog box will appear once again. Check the Change Address box and enter a new value for the iSIC Address. It is suggested that you begin addressing your 4100 radios at 10 and continue in increments of one. For example, your radios will be addressed as 10, 11, 12… When you have entered a new address, click Apply to continue.

You will need to cycle power once more. Disconnect the battery leads and then reconnect the battery leads to restore power after about two seconds.

Your 4100iSIC is now programmed with a new Address. You will be able to see this new address in the iSIC Address field located in the upper-right area of the iSIC Setup dialog box.

Repeat Steps 1 through 3 until all radios are programmed with addresses. Again, it is suggested that you start your addressing at 10, and continue at increments of one until all devices are configured.

Be sure to mark each radio with its programmed address. This address will be used when adding sensors connected to it to iChart.



4 Sensor Wiring 4.1 RS232 In addition to the single RS232 port located externally on the iSIC via the MS8 connector, three RS232 ports are available on the internal Digital terminal strip. Ports 1, 2, and 3 are available for use. To connect your RS232 sensor to the iSIC, open the enclosure, unscrew the correct pins on the terminal strip, and attach the wires from your sensors cable to the connector. A diagram showing the proper wiring for Port 1 is shown below:

Simply connect the Rx pin of the sensor to the Tx pin on the iSIC and the Tx pin of the sensor to the Rx pin on the iSIC.

RS232Sensor

TxRx

GN

D

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

RS232 Ports 2 and 3 can be accessed through the same terminal strip. Port 2 uses pins 7 through 9, Port 3 uses pins 10 through 12. RS232 Sensors requiring a 12V power supply to operate should connect the wire for power to pin 3, BAT, on the terminal strip.



4.2 SDI-12 Connect SDI-12 sensors to the pin labeled ‘SDI-12’ on the Digital terminal strip. A sample wiring diagram is below:

SDI-12Device

+12V

SDI-12

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

GN

D

Multiple SDI-12 Sensors can be wired to the same digital terminal strip. See the following page for more information. Up to ten SDI-12 devices can be connected to the SDI-12 pin on the iSIC Datalogger.



Multiple SDI-12 Sensors

Because each sensor in a multiple SDI-12 system should share the same: SDI-12, GND, and BAT, it is recommended that those three pins be brought to a junction box where each wire is “daisy-chained” together. This simply means that all the SDI-12 wires are connected, all the +12V wires are connected, and all the GND wires are connected.

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

SDI-12Device

+12V

SDI-12

GND

SDI-12Device

+12V

SDI-12

GND

SDI-12Device

+12V

SDI-12

GND

Junction Box

Address 0 Address 1 Address 2

Up to ten SDI-12 sensors may be connected tothe iSIC Datalogger. It is recommended thatmultiple SDI-12 be connected in a “daisy-chain”fashion inside a separate junction box.

Each sensor must have a unique SDI-12 address.For example, the first SDI-12 sensor should beset to Address 0. The next sensor should beAddress 1.



4.3 Analog mV Sensors Environmental measurements can be determined by reading a simple voltage output from a sensor. The voltage level is proportional to the measurement parameter. The iSIC can measure mV sensors with outputs up to 2.5V.

Single-Ended Input

Connect single-ended analog mV input devices to the analog terminal strip. A diagram of this is shown below:

0-2.5VSensor

Signal

GN

D

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

Pins AD0 through AD7 can all be used for connecting single-ended analog mV sensors. Eight sensors can be connected at the same time using these pins on the analog terminal strip.



Differential Input

Connect differential analog mV input devices to the analog terminal strip. A diagram of this is shown below:

0-2.5VSensor

Signal+

Signal-

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

Pins AD0 through AD7 can all be used for connecting differential analog mV sensors. Four sensors can be connected at the same time using these pins on the analog terminal strip.

When using differential sensors, connect each pair to the analog pin pair (ie: AD0/AD1, AD2/AD3, etc) and the positive voltage wire to the first AD pin.



4.4 Analog 4-20 mA

Single-Ended Input

Connect single-ended 4-20 mA sensors to the internal analog terminal strip. A diagram of this is shown below:

4-20 mASensor

Signal+

Signal-NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

Sen

seR

esis

tor

Pins AD0 through AD7 can all be used for connecting 4-20 mA sensors. Eight 4-20 mA sensors can be connected at the same time using these pins on the analog terminal strip.

It is necessary for a sense resistor to be added into the wiring for each sensor to convert the current signal into a voltage signal. For your convenience, four 56Ω resistors are included with the iSIC. The included resistors have a ±1% accuracy. It is recommended you check the documentation for your particular sensor to find the exact resistor requirements.



Differential Input

Connect differential 4-20 mA sensors to the internal analog terminal strip. A diagram of this is shown below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

4-20 mASensor

Signal+

Signal-

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Sen

seR

esis

tor

Pins AD0 through AD7 can all be used for connecting 4-20 mA sensors. Four 4-20 mA sensors can be connected at the same time using these pins on the analog terminal strip.

It is necessary for a sense resistor to be added into the wiring for each sensor to convert the current signal into a voltage signal. For your convenience, four 56Ω resistors are included with the iSIC. The included resistors have a ±1% accuracy. It is recommended you check the documentation for your particular sensor to find the exact resistor requirements.



4.5 Rain Gauge Input A tipping bucket rain gauge can be connected to the iSIC through the digital terminal strip. Follow the connection diagram below to properly connect your rain gauge.

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

Terminal 2

Terminal 1

Tipping BucketRain Gauge

One rain gauge may be connected to the iSIC at a time.



5 iChart Setup and Operation 5.1 Creating a Database for Your Sensors iChart is a PC-based software suite for interfacing with the iSIC and environmental sensors. Detailed instructions on iChart’s operation and capabilities can be found in the iChart instruction manual (included with your copy of the software). The following sections contain a basic walkthrough on how to configure a PC to acquire data from a sensor connected to the iSIC Datalogger. We recommend that you use iChart software with your iSIC either in your lab or office and become familiar with its operation before installing your system in the field.

Create a new iChart database by selecting New Project from the File Menu or by clicking the New Project icon from the Main Toolbar.

A dialog box will appear asking for the iChart database filename. Enter a filename for your database and click the Save button to continue.

Use an Existing iChart Database

If you already have an existing iChart database and wish to add more sensors to it, open the database and select Instrument | Add Device from the file menu.

From here you will configure a sensor for interface with iChart software.



5.2 Configuration for RS232 Sensors The NexSens iSIC Datalogger has a rich library of specific drivers for RS232 devices.

Step 1 – Select Device

After setting up a new database or selecting to add a new device to an existing one, the Add New Device wizard will appear. This wizard allows you to configure the devices connected to your iSIC datalogger. For RS232 or RS485 devices, select the sensor manufacturer from the drop down menu and then select the specific sensor.

Step 2 – Device Description

Type a description of your instrument. iChart will use this description to refer to the device while creating reports, displaying data, and performing other functions. This description may be changed after the device has been added to the database.



Step 3a – Connection Type for iSIC Direct Connect to PC

Select Direct connect with iSIC from the Connection Type drop down menu:

In the Address field, enter the address of the iSIC that has the sensors you are adding the iChart database. This address will be, by default, ‘1’. Then select the port the sensor is connected to from the iSIC Port drop down menu. The external MS8 connector on the iSIC is Port 0. After selecting the correct connection type click Next.



Step 3b – Connection Type for 2100-iSIC Phone Modems

Select NexSens 2100iSIC modem from the Connection Type drop down menu and enter the phone number of the phone line that the iSIC is connected to:

In the Address field, enter the address of the 2100-iSIC that has the sensors you are adding the iChart database. This address will be, by default, ‘1’ unless using a 4100-iSIC. Then select the port the sensor is connected to from the iSIC Port drop down menu. The external MS8 connector on the iSIC is Port 0. After selecting the correct connection type click Next.



Step 3c – Connection Type for Phone Based 3100-iSIC Cellular Modems

If your 3100-iSIC system uses a phone based protocol select NexSens 3100iSIC cellular modem from the Connection Type drop down menu enter the phone number of the cell modem:

In the Address field, enter the address of the iSIC that has the sensors you are adding the iChart database. This address will be, by default, ‘1’. Then select the port the sensor is connected to from the iSIC Port drop down menu. The external MS8 connector on the iSIC is Port 0. After selecting the correct connection type click Next.

Your Cellular of Internet Service Provider will give you a Phone number when you sign up for Cellular service. This phone number or IP address is also stored on the modem.



Step 3d – Connection Type for Internet Protocol Based 3100-iSIC Cellular Modems

If your 3100-iSIC system uses an internet based protocol select NexSens 3100iSIC CDPD/CDMA 1xRTT, GPRS modem from the Connection Type drop down menu and enter the IP address and port number of the cell modem:

The IP Address field will differ based on cellular technology and service provider:

• For CDPD cellular modems enter the IP address supplied from the provider • For CDMA 1xRTT cellular modems enter <dns>.eairlink.com where <dns> is the dynamic

domain name that is setup in the modem. • For GPRS using AT&T service enter <phoneno>.internet.attwireless.net where <phoneno>

is the 11 digit phone number (including the 1 prefix). In the Address field, enter the address of the iSIC that has the sensors you are adding the iChart database. This address will be, by default, ‘1’. Then select the port the sensor is connected to from the iSIC Port drop down menu. The external MS8 connector on the iSIC is Port 0. After selecting the correct connection type click Next.



Step 3e – Connection Type for 4100-iSIC Spread Spectrum Radios

If your 4100-iSIC system uses a 4100-base station select NexSens 4100 spread spectrum radio from the Connection Type drop down menu. Otherwise, if your 4100-iSIC system uses a 4200 radio to phone station select NexSens 4200 radio modem from the Connection Type drop down menu and enter the phone number of the phone line that the 4200 iSIC is connected to:

In the Address field, enter the address of the 4100-iSIC that has the sensors you are adding the iChart database. See the Principles of Operation chapter for more information on iSIC addressing. Then select the port the sensor is connected to from the iSIC Port drop down menu. The external MS8 connector on the iSIC is Port 0. After selecting the correct connection type click Next.



Step 4 – COM Port

Based on your communication option, select the COM port your device, iSIC, 4100-base, internet line, or phone modem is connected to. Click next to continue. Typically this is COM1 for devices, iSICs connected directly to the PC, and 4100-base radios; and COM3 for internet or phone modems. A listing of the COM ports on your PC is available through the Windows Device Manager. Open the Device Manager and select “Ports (COM & LPT)”.

Step 5 – Review Settings

iChart will display the selected settings. Click Next to communicate to the device and add it to your iChart database.

For more information on connecting specific sensors please visit the NexSens support page: www.NexSens.com/support.htm

Specifically the User Manuals section. Download one of our many sensor interface manuals for a detailed look on how to interface to specific sensors.



5.3 Configuration for SDI-12, 4-20 mA and Analog mV Sensors The NexSens iSIC Datalogger has inputs for generic devices that use SDI-12, 4-20 mA and mV signals.

Step 1 – Select Device

After setting up a new database or selecting to add a new device to an existing one, the Add New Device wizard will appear. This wizard allows you to configure the devices connected to your iSIC datalogger. For SDI-12, analog voltage, analog 4-20mA or tipping bucket rain gauge, select NexSens from the list of manufacturers and select iSIC.

Step 2 – Device Description

Type a description of your instrument. iChart will use this description to refer to the device while creating reports, displaying data, and performing other functions. This description may be changed after the device has been added to the database. In the Address field, enter the address of the iSIC that has the sensors you are adding the iChart database. This address will be, by default, ‘1’.



Step 3a – Connection Type for iSIC Direct Connect to PC

Select Direct connect from the Connection Type drop down menu:

Step 3b – Connection Type for 2100-iSIC Phone Modems

Select NexSens 2100 modem from the Connection Type drop down menu and enter the phone number of the phone line that the iSIC is connected to:



Step 3c – Connection Type for Phone Based 3100-iSIC Cellular Modems

If your 3100-iSIC system uses a phone based protocol select NexSens 3100iSIC cellular modem from the Connection Type drop down menu enter the phone number of the cell modem. Your Cellular of Internet Service Provider will give you a Phone number when you sign up for Cellular service.

Step 3d – Connection Type for Internet Protocol Based 3100-iSIC Cellular Modems

If your 3100-iSIC system uses an internet based protocol select NexSens 3100iSIC CDPD/CDMA 1xRTT, GPRS modem from the Connection Type drop down menu.

The IP Address field will differ based on cellular technology and service provider: • For CDPD cellular modems enter the IP address supplied from the provider • For CDMA 1xRTT cellular modems enter <dns>.eairlink.com where <dns> is the dynamic

domain name that is setup in the modem. • For GPRS using AT&T service enter <phoneno>.internet.attwireless.net where

<phoneno> is the 11 digit phone number (including the 1 prefix).



Step 3e – Connection Type for 4100-iSIC Spread Spectrum Radios

If your 4100-iSIC system uses a 4100-base station select NexSens 4100 spread spectrum radio from the Connection Type drop down menu. Otherwise, if your 4100-iSIC system uses a 4200 radio to phone station select NexSens 4200 radio modem from the Connection Type drop down menu and enter the phone number of the phone line that the 4200 iSIC is connected to:

After selecting the correct connection type click Next.

Step 4 – COM Port

Based on your communication option, select the COM port your device, iSIC, 4100-base, internet line, or phone modem is connected to. Click next to continue. Typically this is COM1 for devices, iSICs connected directly to the PC, and 4100-base radios; and COM3 for internet or phone modems. A listing of the COM ports on your PC is available through the Windows Device Manager. Open the Device Manager and select “Ports (COM & LPT)”.



Step 5 – Add New iSIC Device Menu The following screen allows you to add devices to your iSIC.

Log Interval (min) – This value represents how often the iSIC Datalogger will record measurements from analog sensors. For example, a 30 minute Log Interval will set the iSIC to save a measurement once every 30 minutes.

Sample Interval (min) – This field can be used to configure the iSIC Datalogger to average measurements over a certain time period. For example, if you set the Sample Interval field to one minute and set the Log Interval field to 30 minutes, the iSIC will take a sample once every minute and record the average value after 30 minutes.

4-20 mA Sensor… - Opens the Add 4-20 mA Sensor dialog box and adds this type of sensor.

mV Sensor… - Opens the Add mV Sensor dialog box and adds this type of sensor.

SDI-12 Sensor… - Opens the Add SDI-12 Sensor dialog box and adds this type of sensor.

Rain Gauge… - Opens the Add Rain Gauge dialog box and adds a tipping bucket rain gauge.

Temperature… - Opens the Temperature Channel dialog box and adds a NexSens N110 Temperature Sensor.

Battery… - Click the button to configure the iSIC to log battery voltage data along with sensor data. This feature is typically used when the iSIC is powered by a battery or solar panel and is recommended.

Click this icon to remove the selected parameter from the list

Click this icon to move the selected parameter up in the list.

Click this icon to move the selected parameter down in the list.



Add 4-20 mA Sensor Dialog Box

Analog Channel – Standard iSIC Dataloggers have eight analog input channels for connecting 4-20 mA sensors. Select a channel from the drop-down menu to configure its settings.

Note: when connecting a Single Ended 4-20mA sensor select a channel beginning with ‘SE’. If you are using a Differential 4-20mA sensor, select a channel beginning with ‘DE’. Channels beginning with ‘DE’ are located at the bottom of the drop down list.

Parameter – Click the button labeled “…” to open the “Select Parameter” dialog box. This will display a list of common sensor parameters. Select the parameter that corresponds to your sensor and choose the corresponding unit of measurement for your instrument. Click OK to finish.

4ma Value – Enter the measurement value that corresponds to 4 mA. Your sensor’s documentation should contain this specification.

20ma Value – Enter the measurement value that corresponds to 20 mA. Your sensor’s documentation should contain this specification.

Sense Resistor (Ohm) – A resistor must be placed between the 4-20 mA sensor’s signal wire and a ground pin. Enter the value of the resistor in this field.

Switched Power – Set this command if your sensor’s power wire is connected to pin ‘SW.A’ on the iSIC Digital Terminal Strip.

Duration – Set this command if your sensor’s power wire is connected to pin ‘SW.A’ on the iSIC Digital Terminal Strip. Enter the warm-up time for the sensor. Please refer to your sensor’s documentation to determine the appropriate warm-up time necessary before taking measurements.

Norm – Select this option to record an instantaneous measurement at the end of the Log Interval.

Avg – Set this option to record an average value at the end of the Log Interval. The iSIC will take a reading once per Sample Interval. At the end of the Log Interval, the iSIC will record the average value calculated from all measurements.

Min – Select this option to record the minimum value measured during the Log Interval. The iSIC will take a sample once per Sample Interval. At the end of the Log Interval, the iSIC will record the minimum measured value.

Max – Select this option to record the maximum value measured during the Log Interval. The iSIC will take a sample once per Sample Interval. At the end of the Log Interval, the iSIC will record the maximum measured value.



Add mV Sensor Dialog Box

Sensor – Drop down menu of common mV sensor inputs. Select the appropriate sensor parameter from the drop down menu and the appropriate values will be automatically filled in. Simply select the analog channel that the sensor input is connected to and click OK. It should be noted that the Sensor field will only contain one parameter at a time. This means when using sensors will multiple parameters, it is necessary to open this dialog box multiple times.

Analog Channel – Standard iSIC Dataloggers have eight analog input channels for connecting mV sensors. Select a channel from the drop-down menu to configure its settings.

Note: when connecting a Single Ended 4-20mA sensor select a channel beginning with ‘SE’. If you are using a Differential 4-20mA sensor, select a channel beginning with ‘DE’. Channels beginning with ‘DE’ are located at the bottom of the drop down list.

Parameter – Click the button labeled “…” to open the “Select Parameter” dialog box. This will display a list of common sensors parameters. Select the parameter that corresponds to your sensor and choose the corresponding unit of measurement for your instrument. Click OK to finish.

Point 1 (mv) – Enter the voltage in millivolts that corresponds to the sensor’s minimum range. Input the sensor’s minimum scientific unit value in the ‘Value’ field. Your sensor’s documentation should contain these specifications.

Point 2 (mv) – Enter the voltage in millivolts that corresponds to the sensor’s maximum value. Enter the sensor’s maximum value in the ‘Value’ field.

Switched Power – Set this command if your sensor’s power wire is connected to pin ‘SW.A’ on the iSIC Digital Terminal Strip.

Duration – This time can be left at the default of 10 seconds.

Norm – Select this option to record an instantaneous measurement at the end of the Log Interval.

Avg – Set this option to record an average value at the end of the Log Interval. The iSIC will take a sample once per Sample Interval. At the end of the Log Interval, the iSIC will record the average value calculated from all measurements.

Min – Select this option to record the minimum value measured during the Log Interval. The iSIC will take a sample once per Sample Interval and record the minimum measured value.

Max – Select this option to record the maximum value measured during the Log Interval. The iSIC will take a sample once per Sample Interval and record the maximum measured value.



Add SDI-12 Sensor Dialog Box

SDI-12 Sensor – Select the SDI-12 sensor connected to the iSIC Datalogger from the drop down list.

If the sensor you are adding is not in the drop down list, you can add it generically by selecting Generic and manually entering in the device parameters.

You will need to refer to the manufactures manual for specifics on what certain values mean for most sensors.

Very Important: Each SDI-12 parameter and unit selected in this setup must match the sensors list of parameters and units in the same order. This is usually specified in the manufacturer’s manual.

If you select the SDI-12 sensor from the drop down menu then this setup is already done for you.

SDI-12 Address – Ten SDI-12 sensors may be used with an iSIC Datalogger. Each SDI-12 sensor must be setup with unique addresses between 0 and 9 before adding it to iChart. Enter the address of an SDI-12 sensor in this field.

Available Parameters – SDI-12 sensors are typically setup to output data from multiple parameters. Select a parameter and click the ‘Add’ button to configure the iSIC to record it.

Selected Parameters – This box lists all the parameters that the iSIC will log from specified SDI-12 sensor. Click the ‘Remove’ button to remove a parameter from the list.

Note: the units you select for the ‘Available Parameters’ and ‘Selected Parameters’ should be the units specified by the sensor manufacturer. These units can be automatically converted for you for reporting and viewing during the last step in adding the sensor to iChart. Add Rain Gauge Dialog Box

Rain Gauge Type – If a rain gauge is connected to the iSIC Datalogger’s rain pin, select it from the drop-down list of manufacturers. If your rain gauge is not in the available list of sensors, simply choose the Generic 0.01 inch or Generic 0.1 mm depending on the resolution of the tipping bucket rain gauge.



Temperature Channel Dialog Box

This function is used to configure a NexSens N110 temperature probe with the iSIC Datalogger. If a NexSens N110 temperature sensor is connected to your iSIC Datalogger, select the proper channel from the drop-down list. For example, if your N110 is connected to the ‘T0+’ and ‘T0-’ pins on the iSIC then ‘Channel 0’ should be selected.

Battery

It is recommended that the Battery button be clicked whenever using a battery powered iSIC system. This will allow you to monitor the iSIC voltage while it is taking readings. If this voltage falls below 10.7V, the iSIC cannot communicate. Monitoring the battery voltage is a great troubleshooting tool. Clicking this button simply adds Battery to the Active Parameters list.

Review and Save iSIC Configuration

Review the list and make sure all analog 4-20mA, mV, and SDI-12 sensors have been added. Make sure you have added all 4-20mA, mV, SDI-12, and Rain Gauge sensors before clicking Next. If there are more sensors connected to the iSIC, simply click on its corresponding sensor type and add it.

Once all parameters have been added, click Next to complete the Add New Device setup wizard.

For more information on connecting specific sensors please visit the NexSens support page: www.NexSens.com/support.htm

Specifically the User Manuals section. Download one of our many sensor interface manuals for a detailed look on how to interface to specific sensors.



6 Field Deployment 6.1 Mounting the iSIC NexSens recommends the A55 mount kit be used for all outdoor applications when mounting to metal poles, wooden posts, or walls. The A55 kit includes a ¼” aluminum plate, u-bolts, and lag screws. Use the supplied u-bolts for mounting to metal poles less than 2 3/8” diameter.

Attach the plate to the enclosure using the supplied hardware as shown below.

If you will be mounting the iSIC to a wall or other flat surface, simply use the lag screws to securely mount the A55 to the surface. The A55 can be mounted to concrete structures using a drill.



Grounding

Electronic circuits are susceptible to voltage surges. The iSIC has on-board transient voltage suppression devices. Connect the ground lug to a proper electrical ground (i.e. pipe or metal fixture).

For outdoor applications, use the copper wire supplied with the A38 ground kit to connect the ground lug to the rod’s ground clamp. The rod should be driven into the ground as deep as possible and located near the equipment. In addition, make sure the copper wire has no sharp bends and is as short as possible. Be sure to locate the clamp on the rod before driving it with a sledgehammer or fence post driver.

For cellular applications, it is highly recommended that an A39 Lightning Protection kit be installed. The 3100 iSIC and 4100 iSIC are supplied with a short RF cable pigtail with an N-Style connector to connect the lightning protection device to the iSIC. A second RF cable can then be used to connect from the lightning protection device to the antenna. A number of RF cable lengths are available for different installation requirements.

The diagram below illustrates a typical lightning protection installation. Ground the lightning protection device by connecting the ground lug on the lightning protector to the ground rod.

Always remember that even when using lightning protection, the iSIC itself must still be directly grounded to the ground kit.



6.2 Powering the iSIC The NexSens iSIC is powered from an internal battery. The addition of a float charger or solar panel can provide constant re-charging of the battery for prolonged use scenarios.

Before data can be retrieved from your sensors, power must be supplied to the iSIC. To do so, open the iSIC enclosure and unscrew the battery mounting plate. Next, lay the battery sideways against the iSIC plate as shown in the picture below. Re-attach the battery mounting plate and connect the red and black power wires to the power terminals on the battery.

Connect the Red and Black wires to the battery terminals. Red goes to the positive terminal and Black goes to the negative terminal. Also, the battery terminals are color-coded to match the wires.

For most applications, external power to sensors is accessible through the terminal connectors inside the iSIC enclosure. This is adequate for low-current sensors and cable lengths less than 50 feet. However, if a high-current sensor or cable length greater than 50 feet is necessary, then a separate power cable must be run from the sensor directly to one of the iSIC’s internal terminal strips.

The iSIC requires either a float charger or an external solar panel for constant battery re-charging. Both connect to the MS2 connector.

Float Chargers

Float chargers provide constant charging of the iSIC battery. It connects to an electrical outlet near the datalogger and provides constant battery life for high power consumption sensors. If an electrical outlet is located near the iSIC datalogger, it is recommended that a float charger be used.

For outdoor use, a power outlet cover can be purchased to protect the charger from rain and other related weather wear and tear.



Solar Panels

Solar panels are used in remote applications where AC power is inaccessible. Photovoltaic cells form the body of a solar panel or module. These cells transform the sun’s rays into useable electric energy. Solar panels come in many shapes and forms. NexSens offers various sizes of solar panels based on power output. Which one to choose should be based on location and which sensors will be incorporated into your system. NexSens can help you determine what type of solar panel you need based on these factors.

A solar panel is typically installed for charging the internal battery. NexSens solar panels are pre-wired with an integral solar regulator and 15 ft. of cable. Do not connect third party solar panels without solar regulators as unregulated power can spike and cause damage to the iSIC and sensors connected to it. Also included with the A21 10-watt and A22 20-watt solar panels are adjustable pole mount brackets.

Warning – Solar panels generate electrical current in the presence of sun. Keep the MS2 connector on the solar cable disconnected from the iSIC MS2 connector during installation to keep the iSIC powered off.

Orient the solar panel so it receives maximum incident solar radiation over the course of a year. Preferably, orientation is facing south if the panel is located in the northern hemisphere, and facing north in the southern hemisphere. The tilt angle for your site can be found in the following table.

Latitude (N or S Hemisphere) Tilt Angle (From Horizontal) 0-10° 10° 11-20° Latitude + 5° 21-45° Latitude + 10° 46-65° Latitude + 15° >65° 80° * From Design Aids for Small PV Power Systems, Solarex Corp.

The size of your solar panel should be determined by the amount of sunlight the panel is exposed to. A rule of thumb is to expect one day of the week to be a “charge day.” The panel should be able to completely re-charge the battery in the number of hours of this day.

Avoid shaded areas and keep the panel clear of debris and dirt. Doing so, as well as using the correct orientation will maximize battery life and keep your system up and running year round.



6.3 Mounting Antennas The Nexsens 3100-iSIC and 4100-iSIC can use three different types of antennas to transmit data over long distances. Each antenna requires a mounting pole and a RF cable with N-style connectors; It is recommended that the mounting pole have a diameter up to 2-1/2 inches and have a height as high as practical for your application; also use a cable length that appropriately fits the mounting pole. Nexsens offers various lengths of RF cable, See Appendix C: Options and Accessories as well as antennas:

A40/41 Omni Directional Antenna – 5dBd gain, receives and transmits in any direction and is the preferred antenna for most spread spectrum radio applications.

A45/46 Yagi Directional Antenna – 10dBd gain, receives and transmits only in the direction that it is pointed.

A48/47 Unity Gain Antenna – maximum signal above the horizon at a high angle, an excellent choice for areas where there are tall buildings or mountains.

Omni Directional Antenna

The A40/41 antenna transmits and receives in any direction. To mount this antenna: 1) slide the mounting brackets (supplied with the antenna) over the end of the antenna; 2) space the brackets about 6 inches apart; 3) tighten the setscrews and slide the assembly over the mounting pole; 4) tighten the U-bolts after the antenna has been aligned in a vertical position

The 3100-iSIC and 4100-iSIC are supplied with a short RF cable pigtail with an N-Style connector. The connector plugs into an A39 Gas Discharge Lightning Protector. Mount the Lightning Protector below the enclosure and install an RF cable between the lightning protector and antenna.



Yagi Antenna

The A45/46 antenna transmits and receives in only the direction that it is pointed, and is ideally used where the signal strength is weak or where data must be transmitted over long distances. To mount this antenna: 1) mount the U-Bolt to the end of the antenna boom 2) slide the U-Bolt over the mounting pole; 3) point the antenna in the direction of either the cell tower or iSIC base station; 4) tighten the U-bolts after the antenna has been aligned in the correct position




Unity Gain Antenna

The A48/47 Unity Gain antennas transmit and receive at a high angle and are an excellent choice for areas where there are tall buildings or mountains. To mount this antenna: 1) screw the antenna onto the L-bracket mount (supplied with antenna); 2) attach the assembly to the mounting pole using hose clamps (supplied with antenna)


See Appendix D: Choosing the Proper Antenna for choosing the proper antenna to fit your application.



7 Maintenance Enclosure Vent

The NexSens iSIC is equipped with an enclosure vent. This vent is made of Gortex material that allows air to pass and keeps moisture out. The enclosure pressure is always at equilibrium with the atmosphere. Be sure to keep this vent free of debris. Replace the enclosure vent (NexSens Part #A70), located on the bottom of the iSIC, once a year or whenever it becomes dirty and clogged.

Desiccant

The iSIC Datalogger ships with 5 pouches of desiccant. When the system is fully installed and working, remove one pouch from the zip lock bag and place it in the enclosure. The desiccant will absorb moisture that enters the enclosure when the door is opened. The desiccant can be used up, so be sure to replace the pouch with a new one when necessary. Replace the desiccant bag (NexSens Part #A71) twice per year, or more often if frequent access to the iSIC is needed.

The iSIC is housed in a lockable enclosure. Be sure to purchase a small lock to prevent unwanted visitors from gaining access to the unit.

Internal Battery

The NexSens iSIC comes standard with a sealed rechargeable lead acid 12V 8A-hr battery (NexSens Part #A01). This battery will need to be replaced every 18 to 24 months. This ensures that the battery has maximum charging capacity and will minimize problems with low battery life and unexpected power failures.



Appendix

Appendix A: Safety The Federal Communications Commission defines this product as a computing device and requires the following notice.

This equipment generates and uses radio frequency energy and if not installed and used properly, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class A or Class B computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient the receiving antenna

Relocation the computer with respect to the receiver

Move the computer away from the receiver

Plug the computer into a different outlet so that the computer and receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experience radio/television technician for additional suggestions. The user may find the following booklet, prepared by the Federal Communications Commission helpful: “How to Identify and Resolve Radio-TV Interference Problems”. This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402, Stock No. 0004-000-00345-4.



Appendix B: Warranty and Service NexSens Technology, Inc. warrants the instruments it manufactures against defects in materials or workmanship for a period of 1 year from the date of delivery to the original customer. This warranty is limited to the replacement or repair of such defects, without charge, when the instrument is returned to NexSens Technology, Inc. Damage due to accidents, misuse, tampering, lack of reasonable care, loss of parts, failure to perform prescribed maintenance, or accidents of nature is not covered. This warranty excludes all other warranties, express or implied, and is limited to a value not exceeding the purchase price of the instrument.

Limitation of Warranty

This warranty is not applicable to any NexSens Technology, Inc. product damage or failure caused by (i) failure to install, operate or use the product in accordance with NexSens Technology, Inc. written instructions, (ii) abuse or misuse of the product, (iii) failure to maintain the product in accordance with NexSens Technology, Inc. written instructions, (iv) any improper repairs to the product, (v) use by you of defective or improper components or parts in servicing or repairing the product, or (vi) modification of the product in any way not expressly authorized by NexSens Technology, Inc.

Warning

NexSens Technology, Inc. products are not authorized for use as critical components in any life support system where failure of the product is likely to affect its safety or effectiveness.

Authorized U.S. Service Centers

NexSens Technology, Inc. – Corporate Headquarters – 1328 Parkway Court – Dayton, Ohio – 45432 – Phone: (937) 426-2703 – Fax: (937) 426-1125 – E-Mail: [email protected]

4100-iSIC Operations Manual

Appendix C: Options and Accessories Remote Data Acquisition · 2100 iSIC Field Modem · 3100 iSIC Cellular Modem · 4100 iSIC Spread Spectrum Radio · 4200 iSIC Radio to Phone Power Supply · A01 Battery - 12 VDC, 7 Amp-hour · A02 Battery - 12 VDC, 18 Amp-hour · A03 Battery - 12 VDC, 26 Amp-hour · A09 Battery - 12 VDC, 55 Amp-hour · A11 Battery float charger, 120 VAC to 12

VDC, 800 mA · A12 Battery float charger, 120 VAC to 12

VDC, 2 A · A21 Solar panel - 10 watt · A22 Solar panel - 20 watt Antennas · A40 Omni Antenna, Analog Cellular

Frequency · A41 Omni Antenna, Spread Spectrum

Frequency · A45 Yagi Antenna, Analog Cellular

Frequency · A46 Yagi Antenna, Spread Spectrum

Frequency · A47 Omni Unity Gain Antenna, Spread

Spectrum Frequency · A48 Omni Unity Gain Antenna, Cellular

Frequency

Cables · A30 RF Low Loss Cable 6 ft · A31 RF Low Loss Cable 10 ft · A32 RF Low Loss Cable 20 ft · A33 RF Low Loss Cable 50 ft · A34 RF Low Loss Cable 100 ft · A35 RF Micro Loss Cable 2 ft · A36 RF Micro Loss Cable 6 ft · A37 RF Micro Loss Cable 10 ft · A60 RS-232 Cable, 25 ft · A61 RS-232 Cable, 50 ft · A62 RS-232 Cable, 100 ft · A63 RS-232 Cable, 200 ft · A64 RS-232 Cable, 250 ft · A69 Shielded Twisted Pair Cable · A68 Shielded Instrument Cable · A67 Power Cable Lightning Protection · A39 Surge and Lightning Protection Other · Monitor · AVSS242008 Stainless Steel Enclosure · A38 Ground Kit · A50 Junction Box · A55 Pole Mount Kit · A70 Enclosure Vent · A71 Desiccant Bags · A72 RS232 Programming Cable · A508 Float Kit



Appendix D: Choosing the Proper Antenna What is an Antenna?

According to the American Heritage dictionary, an antenna is, “a metallic apparatus for sending or receiving electromagnetic waves.” What exactly does this mean? First, an antenna is constructed of materials that conduct and reflect radio frequency (RF) signals. This enables the antenna to wirelessly transmit data through the air from a communications device in the field to a base station or receiver located a certain distance away.

Why is an Antenna Necessary?

Any wireless communication device will require an antenna to send its signal through the air. Whether you can see it or not, an antenna is always present in communications equipment. All cell phones and radios incorporate some type of antenna to send and receive their RF signals to and from a target. NexSens communications equipment is no different. The 3100-iSIC and 4100-iSIC requires an antenna to function properly.

NexSens offers three types of antennas – Unity Gain, Omni-Directional, and Yagi-Directional. Each of these antennas have different properties and are designed to be used in different applications. It is extremely important to select the proper antenna for your application. The following paragraphs will help explain the proper antenna to choose as well as illustrate some basic antenna principles of operation.

Which Antenna is the Correct Choice?

Depending on your application you will need to select a specific antenna. One of the most important characteristics of antennas is Gain. Gain is a unit that can be used to express the approximate power of an antenna. It affects the way an antenna transmits and receives RF signals. In many instances, increasing the gain on an antenna can increase the distance over which a communications device can send a signal. However, it is important to understand the effects of increasing gain on an antennas range. The following diagram illustrates this effect.

On the diagram, three different dB values are shown emanating from a standard omni-directional antenna. Antenna gain is measured in dB, which stands for decibels, and is an approximate measure of “loudness.” Increasing the power to an antenna will increase the antenna’s gain. This can enable the antenna to transmit data over a greater distance. Increasing the gain of your antenna will not improve signal quality.



As you can see form the diagram, antennas with different gain values will behave quite differently. For example, an antenna with a gain of 0 dB (also known as a unity gain antenna) will spread its signal over a spherical area. An antenna with a gain of 5 dB will spread its signal over a greater horizontal distance than a unity gain antennas and will have a lower vertical signal height range. An antenna with a gain of 10 dB will send its signal over a very wide horizontal area, but vertically-speaking the signal area will be much smaller.

Choosing the Right Antenna For Your Application

After understanding the effect gain has on an antenna, it will be much easier to choose the proper antenna for your application. Unity gain antennas (0 dB) with their spherical RF signal areas are good for metropolitan or mountainous areas that contain many obstructions. Omni-directional antennas (5 dB) are a compromise. They can be used in hilly or suburban areas where the transmit distance is slightly greater and there are less obstructions such as buildings. Yagi antennas (10 dB) are the choice for transmitting data over long distances. Choose this antenna to communicate over wide open, flat areas such as deserts, plains, oceans, and lakes.

Unity Gain

Omni-Directional

Yagi Directional

0 dB gain, tuned for cellular or spread spectrum frequencies. Maximum sig-nal is sent above the horizon at a high angle. It is an excellent choice for areas where there are tall buildings or mountains.

Part No.

A47 – Unity Gain Antenna – Spread spectrum frequency

A48 – Unity Gain Antenna – Cellular frequency

5 dB gain, tuned for cellular or spread spectrum frequencies. This antenna receives and transmits in any direction and is the preferred antenna for most cellular applications.

Part No.

A40 – Omni directional antenna - Cellular frequency (825 to 896 MHz)

A41 – Omni directional antenna - Spread spectrum frequency (890 to 970 MHz)

10 dB gain, tuned for cellular or spread spectrum frequencies. This antenna re-chives and transmits only in the direction that it is pointed. It should only be used in situations where the signal is weak or where data must be transmitted over long distances (five miles and greater).

Part No.

A45 – Yagi Antenna - Heavy duty, Cellular frequency (866 to 960 MHz)

A46 – Omni directional antenna - Spread spectrum frequency (806 to 896 MHz)



Appendix E: Connecting Specific Sensors Take a few moments to read through our sensor interface manuals located at:

http://www.nexsens.com/support/manuals.htm

We believe you should judge a product based on how rich its features are as well as how easy it is to use.

Nexsens was built with the concept that everyone should be able to use advanced sensors and electronics for their projects without the need of a technical staff. With the iSIC Datalogger and iChart Software, you can configure complex systems, generate professional, and run a online database automatically and without the need of any technical experience. Nexsens products were designed with the biologist and environmental engineer in mind.



Appendix F: iSIC Systems with Expansion The NexSens iSIC can come factory installed with an analog, digital, or temperature and dissolved oxygen expansion. Each of these expansions are used to allow the addition of more than the standard amount of sensors into your system. The expansion connector is the same 16-pin green connector used for the digital and analog terminal strips.

Analog Expansion

The analog expansion connector allows for the addition of multiple analog input sensors, such as single and differential 4-20 mA sensors, as well as single and differential analog inputs, analog outputs, and temperature sensors. See the diagrams below for exact signal pins:

Analog Inputs

Pins AD8-A15 can all be used to interface with single and differential 4-20 mA sensors, as well as single and differential analog inputs.

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

0-2.5VSensor

Signal+

Signal-

Expansion Pins Pin 1 - AD8 Pin 2 - AD9 Pin 3 - AGND Pin 4 - AD10 Pin 5 - AD11 Pin 6 - AGND Pin 7 - AD12 Pin 8 - AD13 Pin 9 - AGND Pin 10 - AD14 Pin 11 - AD15 Pin 12 - AGND Pin 13 - DA1 Pin 14 - T0+ Pin 15 - T0-/T1- Pin 16 - T1+

The wiring above shows a differential analog input sensor connected to the analog expansion pins AD8 and AD9. AD8-AD15 can also be used, and operate in the same manner as AD0-AD7. Please see Chapter 3: Connecting Sensors for a complete description on wiring your specific sensor.



Analog Outputs

The analog expansion connector also allows the iSIC to interface with an additional analog output device using the DA1 pin.

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion


AnalogOutput

Signal

GND

The wiring above shows an Analog Output sensor connected to the analog expansion pins DA1 and AGND. DA1 operates in the same way as DA0. Please see Chapter 3: Connecting Sensors for a complete description on wiring your specific sensor.



Temperature Sensors

The analog expansion connector also allows the direct interface of the N110 temperature sensor to the iSIC using T0 and T1. Simply connect the sensors positive lead to the +, and negative lead to – pins of the same T channel as shown in the diagram below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

Signal+

Signal-


N110

The wiring above shows a N110 sensor connected to pins 14 and 15, temperature channel T0 on the analog expansion. Another N110 may be added to your system by wiring the N110 to pins 16 and 15, temperature channel T1.



Digital Expansion

The digital expansion connector allows for the addition of multiple RS232, and generic digital I/O sensors, as well as a main communication port. See the diagrams below for exact signal pins:

RS232

The digital expansion connector allows for two additional RS232 sensors. These ports operate the same as those located on the digital terminal strip. Please see Chapter 3, section RS232 and the diagram below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

RS232Sensor

Tx Rx

GN

DExpansion Pins Pin 1 - Host Rx Pin 2 - Host Tx Pin 3 - GND Pin 4 - P4-Rx Pin 5 - P4-Tx Pin 6 - GND Pin 7 - P5-Rx Pin 8 - P5-Tx Pin 9 - GND Pin 10 - DIO.2 Pin 11 - DIO.3 Pin 12 - SW12VA Pin 13 - GND Pin 14 - SWmA D Pin 15 - SWmA C Pin 16 - SWmA B

The diagram above shows a RS232 sensor connected to port 4 of the digital expansion. You can also connect a RS232 sensor to port 5. Please see Chapter 3: Connecting Sensors for a complete description on wiring your specific sensor.



Main Communication Port

Pins 1, 2, and 3 on the digital expansion connector are used for a main communication port and are useful when your system cannot use the DB9 connector for communicating with the iSIC, such as when using a serial-to-flying-lead cable. See the diagram below for wiring connection:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

Expansion Pins Pin 1 - Host Rx Pin 2 - Host Tx Pin 3 - GND Pin 4 - P4-Rx Pin 5 - P4-Tx Pin 6 - GND Pin 7 - P5-Rx Pin 8 - P5-Tx Pin 9 - GND Pin 10 - DIO.2 Pin 11 - DIO.3 Pin 12 - SW12VA Pin 13 - GND Pin 14 - SWmA D Pin 15 - SWmA C Pin 16 - SWmA B

PC

PC Flying Lead Serial Cable

The diagram above shows a PC interfacing with the iSIC using the digital expansion. Connect the Rx wire to pin 1, the Tx wire to pin 2, and GND to pin 3.

If you are using an A60-A64 Direct Connect Cable:

Color Expansion Signal

White Pin 1 Rx Blue Pin 2 Tx Green Pin 3 GND



Digital I/O

The digital expansion connector also allows for two more additional digital I/O sensors. These additional sensors operate in the same way as those located on the digital terminal strip. Please see Chapter 3, section Digital I/O, and the diagram below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

DigitalI/O

External I/O

GN

D


The diagram above shows a digital I/O sensor connected GND, pin 9, and DIO.2, pin 10, on the digital expansion. Another digital I/O sensor can be added using DIO.3, pin 11 and GND. These DIO pins operate the same way as DIO.0 and DIO.1. Please see Chapter 3: Connecting Sensors for a complete description on wiring your specific sensor to the expansion connector.



12V Switches

The digital expansion connector also has three 12V 200mA switches and one 12V 1A switch which can be used to power specific devices and sensors, such as probe wipers or cell modems. The switches turn on before a reading is taken and turn off after a reading is taken to conserve battery life. See Appendix E: Connecting Specific Sensors and the diagram below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

Wiper


The diagram above shows a probe wiper connected to SWmA B. One wire is connected to the switch pin and the other wire must be connected to a ground on the digital terminal strip. Additional devices can be added using SWmA C and D, and a ground on the digital terminal strip. SW12VA should be used for devices requiring a higher current to operate, such as a cellular modem. Please see Appendix E: Connecting Specific Sensors for a complete description on wiring your specific sensor to the expansion connector.



Temperature and Dissolved Oxygen Sensor Expansion

The temperature and dissolved expansion connector allows for the addition of multiple temperature and dissolved oxygen sensors to your system. See the diagrams below for exact signal pins:

Dissolved Oxygen Sensors

The dissolved oxygen expansion connector allows for four dissolved oxygen sensors to be added to your system. Connect the positive signal wire to the + and the negative wire to the – pin on the expansion connector, see the diagram below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

Expansion Pins Pin 1 - SW12VmA C Pin 2 - SW12VmA D Pin 3 - DO0+ Pin 4 - DO0- Pin 5 - T0+ Pin 6 - T0-/T1- Pin 7 - T1+ Pin 8 - DO1+ Pin 9 - DO1- Pin 10 - DO2+ Pin 11 - DO2- Pin 12 - T2+ Pin 13 - T2-/T3- Pin 14 - T3+ Pin 15 - DO3+ Pin 16 - DO3-

N510

DO+

DO-

TO+

TO-

249K

100K

Resistors Required 100K - AGND to DO+ 249K - DO+ to DO-

The diagram above shows a N510 connected to the DO0, and T0 channels on the temperature and dissolved oxygen expansion. Up to four N510’s can be added to your system using DO0-DO3, and T0-T3.



Temperature Sensors

The temperature and dissolved oxygen expansion connector also allows the direct interface of the N110 temperature sensor to the iSIC using T0 –T3. Simply connect the sensors positive lead to the +, and negative lead to – pins of the same T channel as shown in the diagram below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion

Signal+

Signal-


N110

The wiring above shows a N110 sensor connected to pins 5 and 6, temperature channel T0 on the temperature and dissolved oxygen expansion. Multiple N110 may be added to your system by wiring the N110 to temperature channels T1, T2, and T3.



12V Switches

The dissolved oxygen expansion connector also has two 12V 200mA switches, which can be used to power specific devices and sensors, such as probe wipers or cell modems. The switches turn on before a reading is taken and turn off after a reading is taken to conserve battery life. See Appendix E: Connecting Specific Sensors and the diagram below:

NexSens iSIC

2 3 5

iSIC DB9Female

Connector

Ana

log

12-AD1

6-AD5

7-AD4

8-AGND

9-AD3

10-AD2

11-AGND

2-AGND

3-AD7

4-AD6

5-AGND

13-AD0

1-DA0

14-Ex.5V

15-Ring16-Tip

Dig

ital

1-SDI-12

2-SW.A

3-BAT

4-GND

5-P1.Rx

11-P3.Rx

10-GND

9-P2.Tx

8-P2.Rx

6-P1.Tx

16-Rain15-DIO1

14-DIO0

13-GND

12-P3.Tx

7-GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Expansion


Wiper

The diagram below shows a wiper using SW12VmA C. One wire is connected to the switch pin and the other wire must be connected to a ground on the digital terminal strip. An additional device can be added using SW12VmA D, and a ground on the digital terminal strip. Wipers can be used with the N510 to provide accurate measurements in muddy or stagnant water. Please see Appendix E: Connecting Specific Sensors for a complete description on wiring your specific sensor.



Appendix F: Programming the 3100-iSIC Your 3100-iSIC must be programmed before it can begin sending environmental data back to your iChart database. The first step you must take before using the 3100-iSIC is to contact a service provider in your area. When you contact them, you will need to setup an account and obtain the following information:

· IP Address/Phone Number: Your service provider will provide an IP address or phone number depending on the cellular technology used for each account you setup. In many cases, the service provider will ask for the modem’s EID and serial number. You can find this information on the label marked “EID” inside the 3100-iSIC enclosure. Be sure to have this information available when before you call.

· Side Preference: Ask your service provider if they provide service on the A-Side or B-Side. Sometimes there are additional charges if you use a side other than your carrier’s.

· Device Port: If you are using a CDPD modem, ask your service provider if they block any ports for data transfers. The 3100-iSIC ships with port 12345 default. Some carriers such as Cingular block this port for CDPD. Make sure you set your modem to an open port!

The next step is to connect your 3100-iSIC to your PC’s serial port. Open the iSIC enclosure and connect the supplied 3100-iSIC Programming Cable to the iSIC’s internal RS232 cable as indicated in the picture below:

Connect the two cables as shown in the picture on the left. Connect the other end of the 3100-iSIC Programming Cable to a free RS232 serial port on the back of your PC. Once the 3100-iSIC has been successfully connected to your PC, attach the antenna, apply power to the iSIC and run Wireless ACE.



CDPD After receiving the necessary information from your CDPD and all IP addresses are activated, install the software program Wireless ACE. This program is included with your cellular modem and all settings and configuration options of the modem can be accessed using it.

Note: Wireless ACE is available for download at the following Internet address:

http://www.airlink.com/support/modems/modem_utils.asp

Download the file: CDPD Wireless ACE v1.83 Install. Follow the installation wizard to install Wireless ACE onto your computer.

Note: It is necessary to also download the Wireless ACE user manual for more advanced features than those covered in this appendix.

After installing Wireless ACE, there should be a Wireless ACE icon on your desktop. Double-click this icon and the screen shown in the picture below will appear. Expand the window by clicking on the >> button. Make a note of the RSSI value. This represents signal strength and should be greater than –80.

From the Tools menu, select Communication Options. Configure your settings to match the screenshot below. If your 3100-iSIC Programming Cable is connected to a PC serial port other than COM1, configure the appropriate settings in this window. Once you are finished, click OK to continue.



Next, select Tools | Modem Configuration from the menu. This will take you into the modem’s configuration section.

Program your cell modem using the following screenshots. Enter your specific IP address in the Device IP Address field under the CDPD tab. In the Side Preference field, enter the side preference indicated by your service provider. If required, change the Device Port to a port that is not blocked by your service provider. After entering these values, be sure that every other parameter in your modem matches those that are shown in the screenshots below.

Once you are finished, click the Write to Modem button to program the modem and save all changes. When prompted for a password, enter 12345. Select Yes to reset the modem. The modem should register after it resets – the Chan, Link, and Reg lights should be turned on, solid green. To further verify your modem’s connection to the Internet, check the Status and Summary screens of WirelessACE. The RSSI is an indicator of signal strength and should be around –80. Your modem’s IP address will be shown in the dialog box’s title bar.

Your CDPD cellular modem is now programmed and ready for use with environmental sensors. Please refer to both Chapter 4 and Appendix E for further instructions on configuring specific sensors.



CDMA After receiving the necessary information from your CDMA service provider and all phone numbers are activated, install the software program Wireless ACE. This program is included with your cellular modem and all settings and configuration options of the modem can be accessed using it.

Note: Wireless ACE is available for download at the following Internet address:

http://www.airlink.com/support/modems/modem_utils.asp

There are multiple versions of Wireless ACE, based on the service provider you are using. Download the file: SetupWizard1.zip, making sure you choose the one that corresponds to the cellular service provider you are using. After you have downloaded the file, unzip it and run the SetupWizard1.exe file. You can use WinZip, a program installed with iChart to perform this task.

Follow the installation wizard to install Wireless ACE onto your computer.

After installing Wireless ACE, there should be an Air Link folder on your desktop. Open this folder and should be a file labeled “Setup Wizard”. Double-click this file and the screen shown in the picture below will appear.

Check the Activate Modem check box and then click Next.



Next, Select the COM Port the modem is connected to and click Next.

The program will then connect to the modem. Follow the remaining setup wizard to program your modem with the phone number supplied with your service provider.

Your CDMA cellular modem is now programmed and ready for use with environmental sensors. Please refer to both Chapter 4 and Appendix E for further instructions on configuring specific sensors.

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