Extron Electronics TP T Series Transmitters User Guide - Manual (Page 22)

Installation and Operation, cont’d
TP T Series Transmitters • Installation and Operation 2-12
PRELIMINAR
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Terminating TP cable
The figure below details the recommended termination of TP cables in accordance
with the TIA/EIA T 568A wiring standards.
Pin Wire color
RGB video and audio AV video and audio
Signal Level Signal Level
1 White-green Red/V. sync + ±0.35 V Video + +0.35 V
2 Green Red/V. sync – ±0.35 V Video – –0.35 V
3 White-orange
Audio and
power
+15 V with
±0.5 V
+15 V
4 Blue Green + +0.35 V Reserved None
5 White-blue Green – –0.35 V Reserved None
6 Orange
Audio and
power
Audio +* &
power +
Audio –* &
power –
±0.5 V 0 V
7 White-brown Blue/H. sync + ±0.35 V Reserved None
8 Brown
* Audio can be tied to wire pair 7 and 8 via a jumper. See “Setting
audio jumpers for use with unmodified receivers,”
earlier in this chapter.
Blue/H. sync – ±0.35 V Reserved None
12345678
RJ-45 Connector
Insert Twisted
Pair Wires
Pins:
TP cable termination
Testing the cables
The TP units are designed for and perform best with Extron Enhanced Skew-Free
A/V cable, terminated in accordance with the TIA/EIA T 568 A wiring standard.
CAT 5, 5e, and 6 cables are acceptable, but less preferable. Extron also recommends
the use of preterminated and tested cables. Cables terminated on site should be
tested before use to ensure that they comply with Category 5 specifications.
Equalizing pair skew
Using CAT 5, 5e, and 6 cable can lead to registration errors between the red,
green, and blue video signals. Pair skew can be measured with test equipment or
identified by viewing a crosshatch test pattern with a critical eye to determine if the
red, blue, or green video image leads (appears to the left of) the other two video
images.
N Unless the cable is changed, the skew adjustment should need to be made only
once, during installation.
Use any of the following methods to minimize or eliminate pair skew:
• Switch to an Extron Enhanced Skew-Free A/V UTP cable.
• Add a skew compensation cable equal to the length of the pair skew to the
receiver’s output.
• Install an SEQ 100 15HD Skew Equalizer on the receiver’s video output, and
adjust the skew for the leading video image.