Tektronix Tektronix SPG8000, Техническое описание

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Performance veri fi cation
16. Press the right ( ► ) arrow button until LTC NEG INPUT appears in the
Diagnostics menu.
17. Note the Min level and Max level and then subtract the Min level from the
Max level and record the result in
LTC Negative input terminated loop back
Gain in the test record.
Black output functional
test and frame pulse test
Perform the following procedure to check that the Black signal output and internal
frame pulse signals are functioning properly.
If you have just fi nished the previous test, disconnect all the cables from the unit
under test before beginning this procedure.
1. Connect an SDI signal from the reference unit, like one from an SDI7 module,
to the SDI input of a video monitor, and select that input as the active input on
the waveform monitor.
NOTE.
You can use any HD signal. For example, HD 1080i59, 1080i50, or
1080p24.
2. Connect a cable from the BLACK 1 output on the SPG8000 under test to the
external reference input of the video monitor, and terminate the loop through
on the monitor with a 75
Ω terminator.
Figure 6: Setup for black output and frame pulse test
3. Press the EXT REF button on the video monitor.
42 SPG8000 Speci fi cations and Performance Veri fi cation