User Manual - TRS-RenTelco

Operating Basics
4-Wire Video with
Separate Composite Sync
(Option SD/HD)
Use this setup for testing 4-wire component analog video signals
(Y/G, Pb/B, Pr/R) with the composite sync signal on a separate output line. For
CH4, termination is optional. For CH4 only, you can use no termination or a
75 Ω termination of lower accuracy than the 75 Ω terminations that are provided
with the instrument. See Figure 2 -7.
VM5000
Signal source
(Tektronix MTX100)
Video device
under test (DUT)
Modulator
Y/G
P b /B P r /R Sync
CH1
CH2
CH3
CH4
Y/G P b /B P r /R Sync
= BNC “T” connector
=75Ω Termination
Figure 2- 7: Connection of 4- wire video with separate composite sync
NOTE. Verify that the trigger channel is set to channel 4 (the default setting). If the trigger setting
(Configuration > Operation) is not set to channel 4, you will see signal warning messages and will
be unable to take measurements.
2-6 VM5000 Automatic Video Measurement Set User Manual