HP3458A Emulation Mode
H-12
Description The NDIG command programs the number of digits the instrument uses when displaying readings.
Note that there is an implied 1/2 digit, so when you specify n digits, n-1/2 are displayed.
Note The Model 2002 frequency function is limited to only 4 or 5 digits (NDIG 3 or NDIG4). Values
greater than 4 will be set to 4 with the frequency function.
Example NDIG 5 Display 5-1/2 digits.
NDIG 8 Display 8-1/2 digits.
NPLC
Purpose To program the A/D converter integration time in power line cycles.
Format NPLC <power_line_cycles>
Parameter <power_line_cycles> 0.01 to 50
Default 0.01
Query NPLC? Returns the currently specified integration time in power line cycles.
Description The NPLC command programs the A/D converter integration time in terms of power line cycles. The
programmable range is from 0.01 to 100 power line cycles.
A value of 100 PLC will be adjusted to 10 PLC. Other values above 50 PLC will be adjusted to 50
PLC.
Example NPLC 1 Program 1 power line cycle integration period.
NPLC 5 Program 5 power line cycle integration period.
NRDGS
Purpose To program the number of readings per trigger and the trigger event.
Format NRDGS <count>, <event>
Parameter <count> # of readings (1 to 99999)
<event>
<event> parameter Numeric equivalent Description
AUTO 1 Initiates readings continuously
EXT 2 Initiates reading on negative transition on the exter-
nal trigger line
TIMER 6 Same as AUTO with interval specified by TIMER
command
Default count = 1
Query NRDGS? Returns two responses separated by a comma: (1) the number of readings per trig-
ger, and (2) the present trigger event.
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