Agilent Technologies 4156b, User Manual, Page: 115 / 414

Agilent 4155B/4156B User’s Guide Vol.2, Edition 5 3-41
Measurement Functions
Trigger Function
Trigger Input
The 4155B/4156B can receive an edge trigger from external instruments via the
trigger input terminal, and initiate a sweep or sampling measurement. Following
figure shows examples of externally-triggered sampling and sweep measurements.
For the trigger polarity, you can select positive or negative.
Figure 3-6 Examples of Externally Triggered Measurements
After you press the Single, Repeat, or Append front-panel key, the 4155B/4156B
waits for the trigger signal
only once . When the 4155B/4156B receives the trigger
signal, the 4155B/4156B starts measurements.
For staircase sweep measurements, you can specify the step delay time shown in
Figure 3-6.