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SDS2000X HD Series Digital Oscilloscope User Manual
1 0 0 i n t . s i g l e n t . c o m
15.5.9 Runt Trigger
Runt trigger looks for pulses that cross one threshold but not another as shown in the figure below:
A positive runt pulse across through the low level but not the high level.
A negative runt pulse across through the high level but not the low level.
Holdoff, coupling, and noise reject can be set in the runt trigger, see the sections "Holdoff", "Trigger
Coupling" and "Noise Reject" for details.
15.5.10 Pattern Trigger
The Pattern trigger identifies a trigger condition by looking for a specified pattern. The SDS2000X HD
provides 4 patterns: logical AND, OR, NAND and NOR combination of the channels. Each channel
can be set to "Low", "High" or "Don't Care". If all channels are set to "Don’t Care", the oscilloscope
will not trigger. The result after the logical operation is triggered from true to false, that is, triggers on
the falling edge of the combined waveform.
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