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• Even: triggers on the rising edge of the first ramp pulse in the even field. It is
available when the video standard is NTSC, PAL/SECAM, or 1080i.
Noise Rejection:
Sets the trigger parameter (noise rejection) under this trigger type. For details, refer
to descriptions in "
Noise Rejection
".
Trigger Mode:
In the trigger control area (Trigger) on the front panel, press to quickly switch
the current trigger mode. For details, refer to descriptions in "
Trigger Mode
".
Trigger Level:
Rotate the Trigger LEVEL knob to modify the level. For details, refer to
descriptions in "
Trigger LEVEL/Threshold Level
".
TIP
• For a better observation of the waveform details in the video signal, you can set a larger
memory depth first.
• In the trigger debugging process of video signals, the frequency in different part of the
signal can be reflected by a different brightness, as RIGOL digital oscilloscope provides
the intensity graded color display function. Experienced users can quickly judge the
signal quality and discover abnormalities during the debugging process.
8.7.5 Pattern Trigger
Identifies a trigger condition by searching for a specified pattern. This pattern is a
logical "AND" combination of channels. Each channel can be set to H (high), L (low),
or X (don't care). A rising or falling edge (you can only specify a single edge) can be
specified for one channel included in the pattern. When an edge is specified, the
oscilloscope will trigger at the edge specified if the pattern set for the other channels
are true (namely the actual pattern of the channel is the same as the preset pattern). If
no edge is specified, the oscilloscope will trigger on the last edge that makes the
pattern true. If all the channels in the pattern are set to "X", the oscilloscope will not
trigger.
To Trigger the Oscilloscope
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