Extron electronic Twisted Pair Receiver VTR001 - Manual (Page 19)

VTT001 and VTR001 • Installation
If the transmitter or receiver is to be wall-mounted and
the power supply will be inaccessible, power must be
applied to the power supply before final mounting.
Compatibilty with other Extron products
The VTT001 series and VTR001 series products can
communicate with other Extron products. The following tables
indicate how the products interact.
TP T 15HD A TP T 15HD AV TP T BNC TP T BNC DA4 TP T AV TP T 460
VTR001 series
TP T 468
A A A A B A A
TP R BNC AV TP R BNC A TP R AV TP R 15HD A
VTT001 series A A B A
A = RGB video only
B = incompatible
IN1404XT TP T 15HD 45
A A
The VTT001 series and VTR001 series will not power
the compatible Extron products remotely.
Cable testing
To ensure proper cable termination, each transmission cable
system that uses CAT 5e or CAT 6 cable should be tested
(Extron Skew-Free A/V UTP cable does not need to be tested).
Testing the cable from the RJ-45 connections at the transmitter
and receiver gives the most accurate indications of cable
problems.
There are two varieties of cable runs: simple runs, in which a
single cable is terminated only at the transmitter and receiver,
and complex runs, which can include patch bays and multiple
terminations and lengths of cable. In either case, the entire
cabling system should be tested.
A complete test measures cable length and tests the wire map,
attenuation, NEXT, PSNEXT, ELFEXT, PSELFEXT, return loss,
ACR and PSACR. All of these tests are critical for digital data
transfer. While all of these tests are important indicators of the
quality of the cable termination, the most critical testing
parameters for video transfer are wire map (T-568-A or T-568-B
termination) and pair length measurements. The largest
concern is equalization of skew between cable pairs. Cable
systems of 300 feet or less should exhibit no transmission
problems if they pass at least CAT 5e or preferably CAT 6-D5
channel certification testing.
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