Analog Tv Video Parameters Measurement - ADInstruments S7200 Operation Manual

AD INSTRUMENTS S7200 TV Signal Analyzer Operation Manual

6.3. Analog TV Video Parameters Measurement

Analog TV video measurements required by the FCC include: Depth of Modulation.
If you want to make those measurements in the gated mode, you must use a VITS
inserter to insert the various test signals needed for specific measurements. You
may find that those test signals are already part of the video feed provided by the
broadcaster, however, it is highly recommended to do your own VITS signal
insertion, for better accuracy, AND, to insure your measurement results don't
include the low quality feed from the broadcaster.
134