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SDS1000X HD Series User Manual
88 i n t.s i g lent . c om
15.6 Trigger Source
The trigger sources supported by each trigger type are different. See the table below for details:
Trigger Type
C1~C4
EXT, EXT/5
AC Line
D0~D15
Edge
√
√
√
√
Slope
√
×
×
×
Pulse
√
×
×
√
Video
√
×
×
×
Window
√
×
×
×
Interval
√
×
×
√
Dropout
√
×
×
√
Runt
√
×
×
×
Pattern
√
×
×
√
Serial
√
×
×
√
Qualified
√
×
×
×
Nth Edge
√
×
×
×
Delay
√
×
×
×
Setup/Hold
√
×
×
×
15.7 Holdoff
Holdoff is an additional condition for triggers and can be used to stabilize the triggering of complex
waveforms (such as a pulse series). It can be set to time.
Holdoff by Time
Holdoff time is the amount of time that the oscilloscope waits before re-arming the trigger circuitry.
The oscilloscope will not trigger until the holdoff time expires.
Use the holdoff to trigger on repetitive waveforms that have multiple edges (or other events) between
waveform repetitions. You can also use holdoff to trigger on the first edge of a burst when you know
the minimum time between bursts.
For example, to achieve a stable trigger on the repetitive pulses shown in the figure below set the
holdoff time (t) to 200ns<t<600ns.
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