Keysight Technologies 3458A Guide D'utilisation page 59

You have now changed the trigger event from auto (power-on state) to HOLD
which causes the multimeter to stop taking readings. (Triggering is discussed in
detail in
Default values
Most parameters have a default value. A default value is the value selected when
you execute a command but do not specify a value. For example, the default value
for the trigger parameter is SGL. Press:
Trig
Press:
Enter
Notice that the multimeter takes one reading and then stops (after the single
trigger, the trigger event becomes HOLD regardless of the previously specified
trigger event). You can also enter-1 to select the default value. Press:
Enter
The multimeter again takes a single reading and then stops.
Numeric parameters
Some commands use numeric parameters, A numeric parameter is the actual
value used by the multimeter. We will use the NPLC configuration key to
demonstrate numeric parameters. Press:
NPLC
This display shows:
Keysight 3458A User's Guide
Chapter 4.)
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Enter
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Getting Started
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