306-0009-002 rev200 neets vga extender€¦ · page 5 doc no#: 306‐0009‐002 rev200 neets vga...

Doc no#: 306‐0009‐002 REV200 Neets VGA Extender

Foreword Thank you for choosing the Neets VGA Extender (Power via UTP) ‐ designed for transmission of VGA/XGA signals over a single Cat 5/6 cable.

About this Manual

This manual details the installation and operation of the:

• Neets VGA Extender video transmitter (Power via UTP) ‐ 1 Cat 5/6 output

• Neets VGA Extender video receiver 125 (Power via UTP) ‐ 125m

In this manual:

• The term »transmitter« refers specifically to the Neets VGA Extender video transmitter.

• The term »receiver« refers specifically to the Neets VGA Extender video receiver.

Features

• Up to 125 meters in one line without repeater • Adjustable Video Equalisation (compensates for loss of image quality due to cable length in four

steps with or without extra gain) • Local monitor out on the transmitter

Compatibility

The transmitter and the receiver have been tested with a wide variety of monitors and displays.

However, it is impossible to guarantee correct operation with every monitor currently on the market.

The Neets VGA Extender is compatible with the following equipment:

Monitor: VGA, SVGA, XGA, SXGA, UXGA Computers: All computers using a HD‐15 VGA output and standard VGA signals or RGB and two sync signals H/V

Doc no#: 306‐0009‐002 REV200 Neets VGA Extender Page 2

Service information

Maintenance and repair

The units do not contain any user‐serviceable parts inside. Any malfunction of a unit should be reported to Neets repair centre for service. Any discrepancies in the operation of the unit according to this manual should be reported to the Technical Support Department of Neets.

Technical support

If you cannot determine the nature of a problem, please call Neets and ask for technical support.

If possible call from a phone located near the unit ‐ we may be able to solve your problem directly over the phone. If we cannot solve your problem, and the fault is supposed to be in the unit, we will issue a Return Material Authorisation (RMA) number that must appear on the outside of all returned products. The unit should be double‐packed in the original container, insured, and shipped to the address given to you by our Technical Support representative.

COPYRIGHT ‐ All information contained in this Manual is the intellectual property of and copyrighted material of Neets. All rights are reserved. You may not allow any third party access to content, information or data in this manual without Neets’ express written consent.

CHANGES ‐ Neets reserve the right to change the specification and functions of this product without any notice.

Questions, AFTER reading this manual, can be addressed to your local dealer or Neets

Revision list: Author: Date Description Pages SDV 29‐09‐09 New design All


Index Foreword ........................................................................................................................................................... 1

Service information ........................................................................................................................................... 2

Revision list: ....................................................................................................................................................... 2

Index .................................................................................................................................................................. 3

Introduction ....................................................................................................................................................... 4

Quick setup system guide .................................................................................................................................. 5

Trouble shooting ............................................................................................................................................... 9

Appendix A: General Specifications ................................................................................................................. 10


Introduction The connector wiring must meet the EIA/TIA 568 standard.

UTP / STP Connection Cable Wiring

The transmitter‐receiver interconnection cable is terminated in RJ45 connectors and should be wired according to the EIA/TIA 568 (Scheme B preferred) industry standard. The Neets VGA Extender will function with other wiring schemes, but the video quality may be impaired.

Orientation: Looking into the RJ45 socket pin 1 is on the left and Pin 8 on the right.

The Neets VGA Extender has been tested with all major manufactures of Cat 5/6 cable including BICC‐VERO, Mohawk, and Brand‐Rex with good results.

Failure to wires in twisted pairs will impair the video quality dramatically and / or prevent correct operation.


The Neets VGA Extender is designed for use up to a maximum cable length of 125m/410ft. At this length the video quality should still be acceptable even at a screen resolution of 1200x1600 (75Hz).

Although a single continuous length of interconnect cable is preferable, operation is possible through multiple patch panels. However, the more patch panels the cable is routed through, the greater the chance of video signal degradation.

Quick setup system guide


Begin installation from the computer and move forward. Connect transmitter to the VGA output of the computer Connect a monitor to the VGA out of the Neets VGA Extender – Transmitter Connect the power supply to the transmitter Turn on the PC Run a still test image on the PC Connect the Neets VGA Extender - receiver to the transmitter with a Cat 5/6 cable - the green LED lights up on the receiver Connect a monitor to the receiver Adjust the video quality on the receiver

Video quality

Several factors may influence the video quality:

• RFI from surrounding electrical fields • Cable quality • Connectors quality • Cable length

Equalisation

When transmitting VGA signals over Cat 5/6 cables, the high frequencies and the low frequencies will not be attenuated equally. Therefore the receiver contains a video equalisation circuitry that compensates for loss in image quality caused by signal loss in the Cat 5/6 cables.

To set the correct level of equalisation, adjust the equalizing for the best picture:

Cable length (m) Cable length (ft) Switch Position 0 – 35 m 0 – 115 ft 0 35 – 55 m 115 – 180 ft 1 55 – 75 m 180 – 245 ft 2 75 – 105 m 245 – 345 ft 3 75 – 125 m 245 – 410 ft 4 5 6 7 8 9


Please note that for all practical purposes cable equalisation cannot be exact ‐ the receiver image will seldom be quite as sharp as the original.

Skew

In Cat 5/6 cables there is normally a little difference in the length of the cable pairs. This causes that the three colours (red‐blue‐green) does not appear correctly on the monitor.

Launch a black text on white background and look for colour changes. If you have any colour shades on your picture install a Skew Delay Compensator between the receiver and the monitor.


Trouble shooting

Symptom Cause Solution Low resolution Equalization is incorrectly

set. Adjust the equalization

Bad quality Cat 5/6 cables of insufficient quality

Change the Cat 5/6 cables

Picture has a wrong colour

A connection in the cabling is wrong

Check connectors and patch cables

The picture blanks or flickers or is rolling

Ground loop via the Cat 5/6 cable

Electrical potential on the ground between the PC and the monitor must be aligned

A constant interference or vertical wobble on the screen

Interference from electrical sources

Make sure the Cat 5/6 cable is away from electrical noise (fluorescent lamps – variable speed electrical motors etc.)

A beat pattern on the picture

Interference Change the vertical refresh rates slightly, such as from 60Hz to 70Hz

RGB‐colours are displaced

Skew compensation is needed.

Purchase a skew compensator or install skew free cables

Black and white picture or no picture

Monitor ID is missing Setup monitor manually on the PC (DDC‐signal is not transmitted )

Characters has separated into overlapping red, green & blue pixels

The connections in the Cat 5/6 are not correct

• Check that the Cat 5/6 wiring is EIA 568 standard.

• Check patch panels for poor or incorrect connections


Appendix A: General Specifications

Neets VGA Extender – Transmitter

Input Computer Video: 1 Female 15‐pin HD Video Signal: Analog RGB, O.7V p‐p Impedance 75Ω Video Compatibility VGA to UXGA Maximum Resolution 1280x1024 @ 75Hz (to 125m/410ft.)

(Operation at higher resolutions/refresh rates may be possible at shorter distances)

Video Synchronization TTL compatible horizontal, and vertical positive sync Output Local Monitor: 1 Female 15‐pin HD Main Output 1 RJ‐45 Female Cable Supports Cat 5, Cat 5e & Cat 6 cables Video Frequencies Supported Horizontal 30‐100 kHz Vertical (refresh rates): 43‐100 Hz Power External supply Regulated DC 9‐12 Volt Power Consumption Max 350mA including remote Indication Rear mounted LED Environmental Operating temperature: 5°C to 45°C Storage Temperature: ‐20°C to 70°C Humidity Tolerance: Up to 90% non‐condensing Chassis Construction: Fully shielded. Painted steel Dimensions Size (DxWxH): 65 x 160 x 28 mm

2.56 x 6.30 x 1.10” (Depth excludes connectors)

Weight: 0.35 Kg, 0.77lbs

NOTE: All nominal levels are at ±5% and are subject to change without prior notice


Neets VGA Extender – Receiver (Power over UTP)

Input Main: 1 RJ‐45 Female Cable: Supports Cat 5, Cat 5e & Cat 6 cable Output Computer Video: 1 Female 15‐pin HD Video Signal: Analog RGB, 0.7V p‐p Impedance: 75Ω Video Compatibility: VGA to UXGA Maximum Resolution: 1280x1024 @ 17Hz.

(Operation at higher resolution/refresh rates may be possible at shorter distances)

Maximum Distances: 125m/410ft. (of CAT5 cabling between the transmitter and receiver, 4 step settings)

Video synchronization: TTL compatible horizontal and vertical positive sync

Video Frequencies Supported Horizontal 30‐100 kHz Vertical (refresh rates): 43‐100 Hz Power Supply via UTP: 12V from the transmitter. Diode protection inside. Power LED Power Consumption: Max. 200mA Power Indicator: Green LED Environmental Operating temperature: 5°C to 45°C Storage Temperature: ‐20°C to 70°C Humidity Tolerance: Up to 90% non‐condensing Chassis Construction: Fully shielded. Painted steel Dimensions Size (DxWxH): 65 x 160 x 28 mm

2.56 x 6.30 x 1.10” (Depth excludes connectors)

Weight: 0.35 Kg, 0.77lbs NOTE: All nominal levels are at ±5% and are subject to change without prior notice

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