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3-8
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2600S-901-01 Rev. C / January 2008
Section 3: DUT Test Connections
Series 2600 System SourceMeter® Instruments Reference Manual
Sense mode selection
The sense mode can be set for 2-wire local or 4-wire remote connections.
Front panel sense selection
summarizes the steps to check and/or change the sense mode front panel. When in the
menu structure, use the rotary knob (or
CURSOR
keys) to position the blinking cursor on the
desired menu item, and press
ENTER
to select it. Use the
EXIT
key to back out of the menu
structure.
Table 3-1
Selecting the sense mode from the front panel
Model 2601/2611/2635
Model 2602/2612/2636
1) Press
CONFIG
key
1) Press
CONFIG
key
2) Select
SRC
or
MEAS
menu*
2) Select
CHANNEL-A
or
CHANNEL-B
3) Select
V-SOURCE
menu
3) Select
SRC
or
MEAS
menu*
4) Select
SENSE-MODE
menu
4) Select
V-SOURCE
menu
5) Select
2-WIRE
or
4-WIRE
5) Select
SENSE-MODE
menu
6) Select
2-WIRE
or
4-WIRE
* The sense mode can be set from either the
SRC
or
MEAS
menu.
Remote programming sense selection
summarizes the commands to select the sense mode. See
for details on
using these commands.
Table 3-2
Commands to select sense mode
Command
*
Description
smuX.source.output = smuX.OUTPUT_OFF
Turns off the SMU output.
smuX.sense = smuX.SENSE_LOCAL
Selects local (2-wire) sense.
smuX.sense = smuX.SENSE_REMOTE
Selects remote (4-wire) sense.
* Model 2601/2611/2635: smuX = smua. Model 2602/2612/2636: smuX = smua (Channel A) or
smub (Channel B).
Contact check connections
The contact check function
1
prevents measurement errors due to excessive resistance in the force
or sense leads. Connections for contact check measurements are shown in
for details on contact check commands.
1. All Model 2611/2612 System SourceMeters manufactured by Keithley Instruments support the contact check function. Models 2635
and 2636 do not support the contact check function. Only Models 2601/2602 with firmware Revision 1.1.0 or later and source measure
unit (SMU) hardware Revision E or later support the contact check function. To determine the firmware and SMU hardware revisions,
inspect the data returned by the print(localnode.info()) command. The InstFwRev and SMUBrdRev keys contain the necessary
information.