User Manual

Getting Started Manual

WA-GSM-E-RevA

Video Triggering

Use Video Triggering to trigger on fields or lines of standard video signals.

1. Press the Type option button and select Video.

2. Press the Source option button to choose a channel input

or external input.

3. Press the Polarity option button and select (Normal)

or ( Inverted). Normal triggers on the negative edge

of the sync pulse. Inverted triggers on the positive edge of

the sync pulse.

4. Press the Sync option button and select a video sync

(Line Num, All Lines, Odd Field, Even Field). If you

select Line Num, you can turn the Adjust front panel

knob to set the appointed line number.

5. Press the Next Page option button.

6. Press the Standard option button and select the video

standard for sync and line number count (NTSC or

Pal/Secam).

7. Press the Mode option button to select Auto, Normal, or

Single mode. Use Auto mode to let the acquisition

automatically run in the absence of a trigger. Use Normal

mode when you want to see only valid triggered

waveforms (when you use this mode the oscilloscope

does not display a waveform until after the first trigger).

Use Single mode when you want the oscilloscope to

acquire a single waveform.

8. Press the Setup option button to display the Trigger

Setup menu. You can use the Trigger Setup menu to

select a coupling mode and define a Holdoff value.

Coupling modes comprise DC, AC, HF Reject, and LF

Reject. Turn the Adjust front panel knob to set the

Holdoff value.