Keysight Technologies 3458A Guide D'utilisation page 127

Table 4-1
parameter
[a] The LEVEL trigger or sample event can be used only for DC voltage or direct-sampled digitizing.
[b] The TIMER or LINE event cannot be used for AC or AC+DC voltage measurements using the synchronous or
Making continuous readings
In the power-on state, the multimeter's trigger arm, trigger, and sample events
are all set to AUTO. This causes the multimeter to take readings continuously.
Typically, continuous readings should be suspended before configuring the
multimeter using either the TARM HOLD or TRIG HOLD command or by setting
the multimeter to one of the PRESET states (see
Chapter
(assuming the other triggering events have not been changed) by sending:
OUTPUT 722;"TARM AUTO"
!Resumes readings suspended by TARM HOLD, PRESET FAST, or PRESET DIG
or
OUTPUT 722; "TRIG AUTO"
!Resumes readings suspended by TRIG HOLD or PRESET NORM
Keysight 3458A User's Guide
Event parameters (continued)
Event Used with: Used with:
TARM
[b]
LINE
SGL
✔
SYN
✔
[b]
TIMER
random method, or for frequency or period measurements.
3). After configuring the multimeter, you can resume continuous readings
NRDGS Event description
TRIG
Occurs when the power line voltage crosses zero
✔ ✔
volts
Occurs once (upon receipt of TARM SGL or TRIG SGL
✔
command, then becomes HOLD)
Occurs when the multimeter's output buffer is
empty, reading memory is off or empty, and the
✔ ✔
controller requests data
Occurs automatically with a time interval between
✔
readings
Making Measurements
Suspending readings
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