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Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
Click or tap the Level A/Level B input field to set the level A/level B with the pop-up
numeric keypad. You can also use the trigger level knob or use the corresponding
multipurpose knob to adjust level A/level B. When
Linkage is ticked, the upper limit
and lower limit values change at the same time. The difference between upper and
lower limit remains unchanged. For details, refer to descriptions in
Trigger Level
. The
current trigger level is displayed in the trigger information label at the top of the
screen.
TIP
Press the trigger level knob to switch between three modes: "only adjust Level A", "only adjust
Level B", and "adjust Level A and Level B at the same time".
8.7.4 Video Trigger
The video signal can include image information and timing information, which adopts
different standards and formats. This series can trigger on the standard video signal
field or line of NTSC (National Television Standards Committee), PAL (Phase
Alternating Line), or SECAM (Sequential Couleur A Memoire).
Trigger Type
Click or tap the
Type drop-down button to select "Video".
Figure 8.8 Video Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
Triggering the Oscilloscope
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved. DHO800 User Guide
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