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SDS2000X HD Series Digital Oscilloscope User Manual
8 8 i n t . s i g l e n t . c o m
Trigger Mode
The trigger mode determines how the oscilloscope acquires waveforms.
Auto：An internal timer triggers the sweep after a preset timeout period if no trigger has been found
so that the oscilloscope continuously updates the display whether a trigger happens or not. Auto
mode is suitable for unknown signals or DC signals.
Note: In Auto mode, if the signal satisfies the trigger conditions but cannot trigger the oscilloscope
stably, it may be that interval between two trigger events exceeds the timeout period. Try Normal
mode in this case.
Normal：Triggers and acquisitions only occur when the trigger conditions are met. Otherwise, the
oscilloscope holds the last waveform on the display and waits for the next trigger. Normal mode is
suitable for acquiring:
Only events specified by the trigger settings
Rare events
Single： Captures and displays a single frame that satisfies the trigger conditions, and then stops.
The following trigger events are ignored until the Single acquisition is restarted. Single-mode is
suitable for:
One-shot events or periodic signals, such as power-on\off waveforms on a power rail
Rare events
Force：The oscilloscope performs an acquisition regardless of whether the input signal meets the
trigger conditions or not. Press Single twice to perform a force trigger.
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