RIGOL Chapter 5 Trigger
5-28 MSO4000/DS4000 User’s Guide
Video Trigger
Video trigger is used to capture the complex waveforms of standard video signal. The
trigger circuit checks the horizontal and vertical intervals of the waveform and
triggers according to the video trigger setting.
MSO4000/DS4000 supports the following video standards.
NTSC (National Television Standards Committee);
PAL (Phase Alternating Line);
SECAM (Sequential Couleur A Memoire);
HDTV (High Definition Television).
Press MENU (in the trigger control area (TRIGGER) at the front panel) Type, turn
the multi-function knob to select “Video” and press the knob. You can also press
Type continuously to switch to “Video” trigger.
At this point, the trigger setting information (include the trigger type, trigger source
and trigger level, as shown in the figure below) is displayed at the upper-right side of
the screen and changes with the trigger setting.
Set the video trigger:
1. Specify the trigger source and adjust the trigger level
1) Press Source to select CH1 to CH4 (please refer to “Trigger Source”).
The trigger source currently selected is displayed at the upper-right side of
the screen.
Note: Channels that are turned off can also be selected as the trigger
source.
2) Turn TRIGGER
LEVEL to adjust the trigger level (please refer to
“
Trigger Level/Threshold Level”). The current trigger level is displayed
at the upper-right side of the screen.
2. Specify the video polarity
Press Polarity to select (positive polarity) or (negative polarity).
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