Keysight Technologies 3458A Guide D'utilisation page 126

4 Making Measurements
The trigger arm event
When the specified trigger arm event occurs, it arms the multimeter's triggering
mechanism. That is, the trigger arm event enables a subsequent trigger event.
You specify the trigger arm event using the TARM command.
The trigger event
When the specified trigger event occurs (and the trigger arm event has already
occurred), it enables a subsequent sample event. You specify the trigger event
using the TRIG command.
The sample event
When the sample event occurs (and the trigger arm and trigger events have
already occurred), the multimeter makes a reading. The multimeter will then
make one reading per sample event until the specified number of readings are
taken. The first parameter of the NRDGS (number of readings) command specifies
how many readings are to be taken per trigger event. The second parameter
specifies the event (sample event) that initiates each reading.
Event choices
You can select from a variety of events to use as the trigger arm, trigger, and
sample events.
commands to which they apply.
Table 4-1
parameter
126
Table 4-1
Event parameters
Event Used with: Used with:
TARM
AUTO ✔
EXT ✔
HOLD
✔
[a]
LEVEL
describes the event parameters and shows the
NRDGS Event description
TRIG
✔ ✔ Occurs automatically (whenever required)
Occurs on negative edge transition on the
✔ ✔
multimeter's external trigger input
Suspends measurements
✔
Occurs when the specified voltage is reached on the
✔ ✔
specified slope of the input signal
Keysight 3458A User's Guide