Table of Contents
Advertisement
Executing Measurement
Starting (Triggering) Measurement
Generating a trigger with an external signal
Step 1.
Select external trigger mode according to the procedure in
mode" on page
Step 2.
Press the [Display Format] key.
Step 3.
Input a trigger signal (TTL pulse signal) from the Ext Trig terminal on the rear
panel or input EXT_TRIG through the handler/scanner interface to perform a
single measurement.
The trigger signal input from the Ext Trig terminal on the rear panel must meet
the following requirements (input voltage and pulse width).
e4981aue0045
Step 4.
To repeat measurement, repeat
Selecting polarity for BNC external trigger
Step 1.
Press the [System] key.
Step 2.
Use the cursor keys to select the EXT TRIG POL field.
Step 3.
Use the following softkeys:
Softkey
POS
NEG
Setting the trigger polarity for BNC external trigger on the rear panel does
not affects the trigger signal on handler/scanner interface.
Notes on inputting a trigger signal
A trigger signal is not recognized until measurement with the previous input
trigger is finished (the EOM signal turns to LOW).
•
Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
116.
Trigger pulse width: longer than 100
Description
Specifies positive edge trigger
Specifies negative edge trigger
If a trigger is input twice (double trigger), only the first one is valid.
High level input voltage: 2 - 5 V
Low level input voltage: 0 - 0.5 V
sec
.
Step 3
"Setting the trigger
117
Advertisement
Table of Contents
