User`s manual

RESistance:APERture?
[SENSe:]RESistance:APERture? [MIN | MAX] returns one of the following
numbers to the output buffer:
The present aperture time in seconds if
MIN or MAX is not specified.
The minimum aperture time available (10 µs) if
MIN is specified.
The maximum aperture time available (320 ms) if
MAX is specified.
Example Querying the Aperture Time
RES:APER 2.67E-01 !Aperture time is 267 ms.
RES:APER? !Query multimeter to return aperture time.
enter statement !Enter value into computer.
RESistance:NPLC
[SENSe:]RESistance:NPLC <number> sets the integration time in power line
cycles (PLCs). Values are rounded up to the nearest number of PLCs shown in the
following table.
Parameters
Parameter Name Parameter Type Range of Values Default Units
<number>
numeric 0.0005 | 0.005 | 0.125 | 1 | 16 |
MIN | MAX
PLCs
Comments •
MINimum
selects 0.0005 PLCs. MAXimum selects 16 PLCs. Setting the
integration time in power line cycles (PLCs) also sets the aperture time and the
resolution. For example, 16 PLCs (60 Hz line frequency) sets an aperture time of
267 ms. The corresponding resolution depends on the function and range you
select.
• The RES:NPLC command overrides the results of previously executed
RESistance:APERture and RESistance: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 and 16 PLC settings provide normal mode rejection of 50 Hz or
60 Hz power line related noise.
• *RST Condition: 1 PLC
Example Setting the Integration Time in PLCs
RES:NPLC 16 !Integration time is 16 PLCs.
Chapter 5 Command Reference 164