– You can also set the integration time by specifying an aperture time. However, note that specifying integration
time using NPLCs executes faster and offers better noise rejection characteristics for values of NPLC greater than
1.
– This parameter is set to its default value after a Factory Reset (*RST command).
[SENSe:]{RESistance|FRESistance}:OCOMpensated {OFF | ON} [, (@<ch_list>)]
[SENSe:]{RESistance|FRESistance}:OCOMpensated? [(@<ch_list>)]
Enables or disables offset compensation. Offset compensation removes the effects of small DC voltages in the circuit
being measured. The technique involves taking the difference between two resistance measurements, one with the
current source set to the normal value, and one with the current source set to a lower value. Enabling offset com-
pensation approximately doubles the reading time.
Parameter is shared between RESistance and FRESistance measurements. Setting or querying the parameter
with the RESistance version of this command is identical to setting or querying it with the FRESistance ver-
sion.
This command is not supported in DMM Digitize data acquisition mode.
Error -221,"Settings conflict; DMM digitizing mode has been disabled" will be generated when you send the
command to enable offset compensation for 2-wire or 4-wire resistance measurement in DMM Digitize
mode.
Parameter Typical return
{OFF | ON}. Default: OFF 0 (OFF) or 1 (ON)
Configure low-power 2-wire resistance measurements, and enable offset compensation:
RES:POW:LIMON
RES:OCOMON
– For 4-wire resistance measurements, the instrument automatically pairs channel n in Bank 1 with channel n+10
in Bank 2 (DAQM900A or DAQM901A) or n+8 (DAQM902A) to provide the source and sense connections. For
example, make the source connections to the HI and LO terminals on channel 02 in Bank 1 and the sense con-
nections to the HI and LO terminals on channel 12 (DAQM900Aor DAQM901A) or 10 (DAQM902A) in Bank
2.Specify the paired channel in Bank 1 (source) as the <ch_list> channel (paired channels in Bank 2 are not
allowed in the <ch_list>).
– The CONFigure and MEASure? commands automatically disable offset compensation.
– Applies only to resistance measurements on the 100 Ω, 1kΩ, 10 kΩ, and 100 kΩ ranges.
– This parameter is set to its default value after a Factory Reset (*RST command).
Keysight DAQ970A/DAQ973A Programming Guide 243
2 SCPI Programming
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