4 Triggering
156 InfiniiVision Oscilloscopes User’s Guide
TV Trigger
TV triggering can be used to capture the complicated waveforms of most standard and
high-definition analog video signals. The trigger circuitry detects the vertical and
horizontal interval of the waveform and produces triggers based on the TV trigger settings
you have selected.
The oscilloscope’s MegaZoom III technology gives you bright, easily viewed displays of
any part of the video waveform. Analysis of video waveforms is simplified by the
oscilloscope’s ability to trigger on any selected line of the video signal.
1 Press the [More] key in the Trigger section of the front panel. If TV is not selected,
rotate the Entry knob until TV is displayed in the Trigger softkey, then press the
Settings softkey to display TV Trigger Menu.
It is important, when using a 10:1 passive probe, that the probe is correctly compensated.
The oscilloscope is sensitive to this and will not trigger if the probe is not properly
compensated, especially for progressive formats.
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