Application Examples
54
TDS 200-Series Digital Oscilloscope User Manual
Triggering on Video Fields
To trigger on the video fields, do these steps:
1. Push the TRIGGER MENU button to see the Trigger menu.
2. Push the top menu box button to select Video.
3. Push the Sync menu box button to select Field.
4. Adjust the horizontal SEC/DIV knob to see a complete field
across the screen.
5. Push the HORIZONTAL MENU button to see the Main menu.
6. Push the Trig knob menu box button to select Holdoff.
7. Adjust the HOLDOFF knob to an appropriate period. You can
use about 21 ms for NTSC (and PAL) video.
Triggering on Video Lines
You can also look at the video lines in the field. To trigger on the
lines, do these steps:
1. Push the TRIGGER MENU button to see the Trigger menu.
2. Push the top menu box button to select Video.
3. Push the Sync menu box button to select Line.
4. Adjust the horizontal SEC/DIV knob to see a complete video line
across the screen.