Example 7: Triggering On A Video Signal - Rigol DS1302CA User Manual

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Example 7: Triggering on a Video Signal

Test a video circuit in the DVD set. Use video trigger to obtain a stable display.
Triggering on Video Fields
To trigger on the video fields, please do as the following steps:
1 Press the MENU key in the Trigger control area to see the Trigger menu.
2 Press Mode to select Video.
3 Press Source to select CH1 as trigger source.
4 Press Polarity to select .
5 Press Sync as Odd Field or Even Field.
6 Adjust the
trigger.
7 Turn the horizontal
DS1000CA series triggers on the Odd field or Even field. To avoid confusion when
Odd field and Even field trigger simultaneously, choose Odd field or Even field as in
step 5 above.
3-10
to set trigger level at the video sync pulse to get stable
knob to see a complete waveform on the screen.
Figure 3-7 Waveform display
User‟s Guide for DS1000CA Series