Keithley 2601 Reference Manual

3-8 Return to Section Topics 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
Table 3-1 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
Table 3-2 summarizes the commands to select the sense mode. See Section 12 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 Figure 3-7. See
Section 4 for operation and Section 12 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.

Keithley 2601 Specifications

General

Brand	Keithley
Model	2601
Category	Measuring Instruments
Language	English