RIGOL Chapter 5 To Trigger the Oscilloscope
5-2 DS1000Z-E User Guide
Trigger Source
Press MENU Source in the trigger control area (TRIGGER) on the front panel to
select the desired trigger source. Analog channels CH1 and CH2, EXT (external
trigger), or the AC Line can all be used as trigger source.
Analog channel input:
Signals input from analog channels CH1 and CH2 can all be used as trigger source.
No matter whether the channel selected is enabled, the channel can work normally.
External trigger input:
The trigger signal (e.g. external clock or signal of the circuit under test) input via the
external trigger input terminal [EXT TRIG] connector can be used as the trigger
source. When the trigger source is selected, rotate TRIGGER LEVEL to set the
trigger level within the range from -4 V to 4 V.
When the two analog channels are used to acquire data, you can connect the trigger
signal via the [EXT TRIG] connector and use the signal as the external trigger
source.
AC line:
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 trigger 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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