2: General operation Series 2600B System SourceMeter® Instrument
2-76 2600BS-901-01 Rev. B / May 2013
Sense mode selection
The sense mode can be set to use 2-wire local sensing connections (on page 2-53) or 4-wire remote
sensing connections (on page 2-54).
The default sense setting is 2-wire local.
Front panel sense mode selection
To check or change the sense mode from the front panel:
1. Press the CONFIG key.
2. Press the SRC or MEAS key. You can access and set the Series 2600B sense mode from either
the V-SOURCE or the V-MEAS menu items.
3. If you pressed the SRC key: select V-SOURCE > SENSE-MODE, and then press the ENTER key
or the navigation wheel .
If you pressed the MEAS key: select V-MEAS > SENSE-MODE, and then press the ENTER key
or the navigation wheel .
4. Select 2-WIRE or 4-WIRE as needed, and then press the ENTER key or the navigation wheel .
Selecting the sense from the remote interface
To select the remote sense from the remote interface:
Set the smuX.sense attribute to control the sense state by remote. The programming example below
illustrates how to configure the Series 2600B for 4-wire remote sensing:
smua.sense = smua.SENSE_REMOTE
The following table summarizes the commands to select the sense mode. See Remote source-
measure commands (on page 2-34) and TSP command reference (on page 7-1) for details on using
these commands.
Commands to select sense mode
Command* Description
smuX.source.output = smuX.OUTPUT_OFF
Turns off the source-measure unit
(SMU) output.
smuX.sense = smuX.SENSE_LOCAL
Select local (2-wire) sense.
smuX.sense = smuX.SENSE_LOCAL
Select remote (4-wire) sense.
* smuX: For Models 2601B, 2611B, and 2635B, this value is smua (SMU Channel A); for Models 2602B,
2604B, 2612B, 2614B, 2634B, and 2636B, this value can be smua (for SMU Channel A) or smub (for SMU
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