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148 Multimeter Command Reference Chapter 3
VOLTage[:DC]:NPLC
[SENSe:]VOLTage[:DC]:NPLC <number> sets the integration time in power line
cycles (PLCs). The NPLC is set to a value from the range of values that can
accommodate the
<number> specified. 11 sets NPLC to 100.
Parameters
Comments • MIN selects 0.02 PLCs. MAX selects 100 PLCs. Setting the integration time in
PLCs also sets the aperture time and the resolution. For example, 10 PLCs sets
an aperture time of 167ms (60Hz line frequency) or 200ms (50Hz). The
corresponding resolution depends on the function and range you select.
• The VOLT:DC:NPLC command overrides the results of previously executed
VOLTage:DC:RESolution commands (the last command executed has
priority).
• The greater the number of PLCs, the greater the normal mode rejection (and
the lower the reading rate).
• Only the 1 PLC, 10 PLC and 100 PLC settings provide normal mode rejection
of 50Hz or 60Hz power line related noise.
• *RST Condition: 10 PLC
Example Set the Integration Time in PLCs
VOLT:DC:NPLC 10
Integration time is 10 PLCs.
VOLTage[:DC]:NPLC?
[SENSe:]VOLTage[:DC]:NPLC? [MIN|MAX] returns one of the following numbers
to the output buffer:
• The present integration time in PLCs if MIN or MAX is not specified.
• The minimum integration time available (0.02) if MIN is specified.
• The maximum integration time available (100) if MAX is specified.
Example Query the Integration Time
VOLT:DC:NPLC 100
Integration time is 100 PLCs.
VOLT:DC:NPLC?
Query multimeter to return integration time.
enter statement
Enter value into computer.
Parameter Name Parameter Type Range of Values Default Units
<
number>
numeric 0.02|0.2|1|10|100|MIN|MAX PLCs