Keysight EXG and MXG X-Series Signal Generators User’s Guide 189
Basic Digital Operation for N5172B/82B with Options 653/655/656/657
Triggering a Waveform
Example: Gated Triggering
Gated triggering enables you to define the on and off states of a modulating waveform.
1. Connect the output of a function generator to the signal generator’s rear panel PAT TRIG IN
connector, as shown in the following figure. This connection is applicable to all external
triggering methods. The optional oscilloscope connection enables you to see the effect that
the trigger signal has on the RF output.
2. Preset the signal generator.
3. Configure the RF output:
— Set the desired frequency.
— Set the desired amplitude.
— Turn on the RF output.
4. Select a waveform for playback (sequence or segment):
a. Press Mode > Dual ARB > Select Waveform.
b. In the Segment On or Sequence On column, highlight a waveform.
c. Press Select Waveform.
5. Set the triggering as follows:
— Trigger type: Gated
Press Trigger Type > Gated.
— Active state: Low
Press Active Low.
— Trigger source: External
Press Trigger Source > Ext.
— Input connector: Rear panel Patt Trig In BNC
Press Ext Source > Patt Trig In 1.
6. Generate the waveform: Press Return > ARB Off On until On highlights.
7. On the function generator, configure a TTL signal for the external gating trigger.