Keysight Technologies 3458A Guide D'utilisation page 303

NRDGS
Number of read ings. Designates the number of readings taken per trigger and
the event (sample event) that initiates each reading.
Syntax
NRDGS [count][,event]
count
Designates the number of readings per trigger event. The valid range for this
parameter is 1 to 16777215. (The count parameter also corresponds to the record
parameter in the RMEM command. Refer to the
Power-on count = 1.
Default count = 1.
event
Designates the event that initiates each reading (sample event). The event
parameter choices are:
event
parameter
AUTO
EXTSYN
SYN
TIMER
LEVEL
LINE
[a] The TIMER or LINE event cannot be used for sampled AC or AC+DC voltage measurements (SETACV RNDM or
[b] The LEVEL sample event can be used only for DC voltage and direct-sampled measurements.
Keysight 3458A User's Guide
Numeric
query equiv.
1
2
5
[a]
6
[b]
7
[a]
8
SYNC) or for frequency or period measurements.
RMEM
Description
Initiates reading whenever the multimeter is not busy
Initiates reading on negative edge transition on the multimeter's
external trigger input connector
Initiates reading when the multimeter's output buffer is empty,
reading memory is off or empty, and the controller requests data.
Similar to AUTO with a time interval between successive readings
(specify interval with the TIMER command)
Initiates reading when the input signal reaches the voltage
specified by the LEVEL command on the slope specified by the
SLOPE command.
Initiates reading on a zero crossing of the AC line voltage
Command Reference
command for details.)
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