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RIGOL Chapter 5 To Trigger the Oscilloscope
5-2 DS8000-R User Guide
Trigger Source
Click on the function navigation icon
at the lower-left corner of the screen to
open the function navigation. Click on the trigger icon
to open the trigger setting
menu. Click Source to select the desired source.
Analog channels (CH1-CH4), EXT (external trigger), or AC Line can all be selected as
the trigger source.
Analog channel input:
Signals input from analog channels CH1-CH4 can all be used as trigger sources. No
matter whether the channel selected is enabled, the channel can work normally.
External trigger input:
The external trigger source can be used to trigger on the fifth channel while all the
other four channels are acquiring data. The trigger signal (e.g. external clock or
signal of the circuit under test) will be connected to EXT trigger source via the
external trigger input terminal [EXT TRIG] connector. You can set the trigger
conditions within the range of the trigger level (from -5 V to +5 V).
AC line input:
The trigger signal is obtained from the AC power input of the oscilloscope. AC trigger
is usually used to measure signals relevant to the AC power frequency. For example,
stably triggering the waveform output from the transformer of a transformer
substation. It is mainly used in related measurements of the power industry.
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