[SENSe:]RESistance:OCOMpensated

From Keysight 34970A/34972A

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[SENSe:]RESistance:OCOMpensated
[SENSe:]FRESistance:OCOMpensated

This functionality is available on the 34972A only.

Syntax

[SENSe:]RESistance:OCOMpensated <state>[,(@<ch_list>)]
[SENSe:]RESistance:OCOMpensated? [(@<ch_list>)]

[SENSe:]FRESistance:OCOMpensated <state>[,(@<ch_list>)]
[SENSe:]FRESistance:OCOMpensated? [(@<ch_list>)]

Description

Offset compensation removes the effects of any DC voltages in the circuit being measured. The technique involves taking the difference between two resistance measurements on the specified channels, one with the current source turned on and one with the current source turned off.

Used With:

34901A 20 Channel Multiplexer (2/4-wire) Module
34902A 16 Channel Multiplexer (2/4-wire) Module
34908A 40 Channel Single-Ended Multiplexer Module (RESistance only; not FRESistance)

Parameters

Name Type Range of Values Default Value

<state> Boolean {OFF|0|ON|1} This is a required parameter.

The factory default value is OFF.

<ch_list> Channel List
One or more channels, as shown:

(@310) - channel 10 on the module in slot 300.

(@305:310) - channels 05 through 10 on the module in slot 300.

(@202:207,209,302:308) - channels 02 through 07 and 09 on the module in slot 200 and channels 02 through 08 on the module in slot 300.
If you omit the optional <ch_list> parameter, this command applies to the currently defined scan list.

Name	Type	Range of Values	Default Value
<state>	Boolean	{OFF\|0\|ON\|1}	This is a required parameter. The factory default value is OFF.
<ch_list>	Channel List	One or more channels, as shown: (@310) - channel 10 on the module in slot 300. (@305:310) - channels 05 through 10 on the module in slot 300. (@202:207,209,302:308) - channels 02 through 07 and 09 on the module in slot 200 and channels 02 through 08 on the module in slot 300.	If you omit the optional <ch_list> parameter, this command applies to the currently defined scan list.

Remarks

Turning offset compensation on will double measurement time.
Once enabled, offset compensation is applied to both 2-wire and 4-wire resistance measurements on the specified channels.
Because 2-wire and 4-wire resistance are related functions, changing a measurement parameter for one function will also change the corresponding parameter for the other function .
For 4-wire resistance measurements, the instrument automatically pairs channel n in Bank 1 with channel n+10 in Bank 2 (34901A) or n+8 (34902A) 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 connections to the HI and LO terminals on channel 12 (34901A) or 10 (34902A) in Bank 2.Specify the paired channel in Bank 1 (source) as the <ch_list> channel (channels in Bank 2 are not allowed in the <ch_list>).
The CONFigure and MEASure? commands automatically disable offset compensation.
The instrument disables offset compensation after a Factory Reset (*RST command). An Instrument Preset (SYSTem:PRESet command) or Card Reset (SYSTem:CPON command) does not change the setting.

Return Format

The query returns 0 (OFF) or 1 (ON) for each channel specified. Multiple responses are separated by commas.

Examples

In each of the following examples, you can replace the node name RES with FRES.

The following command enables offset compensation on channels 3 and 13 in slot 100.

RES:OCOM ON,(@103,113)

The following query returns the offset compensation settings on channels 03 and 13 in slot 100.

RES:OCOM? (@103,113)

Typical Response: 1,1

[SENSe:]RESistance:OCOMpensated