Basic Concepts
10
TDS 200-Series Digital Oscilloscope User Manual
Triggering
The trigger determines when the oscilloscope starts to acquire data
and display a waveform. When a trigger is set up properly, it can
convert unstable displays or blank screens into meaningful
waveforms.
Triggered waveform Untriggered waveforms
When the oscilloscope starts to acquire a waveform, it collects
enough data so that it can draw the waveform to the left of the
trigger point. The oscilloscope continues to acquire data while
waiting for the trigger condition to occur. After it detects a trigger,
the oscilloscope continues to acquire enough data so that it can draw
the waveform to the right of the trigger point.
Source
You can derive your trigger from various sources: Input channels,
AC Line, and External.
Input. The most commonly used trigger source is any one of the input
channels. The channel you select as a trigger source will function
whether it is displayed or not.
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