Triggering
TDS5000 Series User Manual
3-89
Use this procedure to detect and trigger on a video signal. Only composite signal
formats are supported. Graphic display formats such as RGB and VGA are not
supported.
Overview To trigger on a video signal Control elements and resources
Select video
triggering
1. Push the front-panel ADVANCED button.
2. On the Trigger Setup control window, select the A Event
tab.
3. Click Video.
Select the
source
4. To specify which channel becomes the trigger source,
click Source and select the source from the list.
Select the
format
5. Select the video signal format from several preset
formats or set a custom format. If using a preset format,
click the Lines and Fields Autoset buttons to optimize
the oscilloscope for viewing the fields or lines for your
chosen format.
If you select t he Custom signal format, no Autoset
options are available. You must set the Scan Type
(Interlaced or Progressive) and Scan Rate.
Custom scan rates enable you to trigger on
non-broadcast video signals that have unique scan
rates. Select the scan rate that includes your signal:
15--20 kHz, 20--25 kHz, 25--35 kHz, 35--50 kHz, or
50--65 kHz.
Triggering on a Video
Signal
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