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4.2.5 Trigger Source Selection
When signal generator receives a trigger signal, it generates a sweep output, and then waits for the next trigger
signal. Sweep source can be internal, external or manual trigger. If need to change, press Parameter
→Trigger
Source softkey in turn.
1) When internal trigger is selected, waveform generator will output a continuous sweep, and the rate is
determined by sweep time.
2) When external trigger is selected, waveform generator will trigger through modulation interface hardware.
3) When manual trigger is selected, backlight of Trigger button will flash, press Trigger button for once, sweep will
be output.
4.2.6 Trigger Output
When trigger source is internal or manual trigger, trigger signal (square wave) can be output through external
modulation interface (Input/CNT probe). The default of trigger output option is “Close”. If need to change, press
Parameter
→Trigger Output →Open softkey in turn.
In internal trigger, signal generator output a square of 50% duty cycle through external modulation interface
(Input/CNT probe) at the beginning of sweep.
In manual trigger, signal generator output a pulse that has pulse width more than 1us through external
modulation interface (Input/CNT probe) at the beginning of sweep.
In external trigger, trigger output is output through modulation interface (Input/CNT probe), but trigger output
options in parameter list will be hidden.
