Keysight E4980A User Manual page 257

Overview of Remote Control
Starting a Measurement Cycle (triggering the instrument)
Step 2. Issue the :TRIG:SOUR command to set the trigger source to "Internal Trigger."
Step 3. The trigger system starts, and the instrument is automatically triggered by
the internal trigger, performing continuous measurement.
Step 4. Read measurement data on demand.
For the list sweep measurement, the method of triggering the instrument
differs depending on the list sweep mode.
Use the :LIST:MODE SEQ|STEP command to change the list sweep mode.
1. Sequential mode
2. Step mode
Figure 8-19 Sequential mode and step mode
Keysight E4980A/AL Precision LCR Meter
When the E4980A/AL is triggered once, the device is measured at all
sweep points.
The sweep point is incremented each time the E4980A/AL is triggered.
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