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5.2 Go to the TPA110 R/IRR receiver unit and connect a waveform monitor or an
oscilloscope that can be synchronized on the horizontal synchronism (H) to the output
video signal, making sure that the input of the instrument is terminated at 75Ω.
If the section of CAT5 cable is equal to or less than 50% of the maximum section
that can be compensated (see above):
5.3 Set the LONG trimmer to zero (fully counterclockwise)
5.4 Adjust the MEDIUM trimmer on the front panel of the TPA110 R / IRR receiver
unit until the amplitude of the burst on the pedestal is between 210 and 300mVpp
(If necessary, adjust the LONG trimmer turning this a few degrees in a clockwise
direction).
5.5 Check that the amplitude of the negative synchronism is between 250 and
300mV
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