Keithley 2651A Reference Manual

Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 7: Command reference
2651A-901-01 Rev. A / March 2011 7-219
Usage
offfunc = smuX.source.offfunc
smuX.source.offfunc = offfunc
offfunc
Set to the source function to be used when the output is off and the SMU is in
normal output-off mode. Set to one of the following values:
smuX.OUTPUT_DCVOLTS: Source 0 V
smuX.OUTPUT_DCAMPS: Source 0 A
X
SMU channel (for example, smua.source.offfunc applies to SMU channel A)
Details
This attribute controls the source function used when the output is turned off and the smuX.source.offmode is
set to smuX.OUTPUT_NORMAL. Set this attribute to smuX.OUTPUT_DCVOLTS for the source to be a 0 V source
when the output is off (smuX.source.offlimiti is used). Set it to smuX.OUTPUT_DCAMPS for the source to
be a 0 A source when the output is off (smuX.source.offlimitv is used).
This attribute is only used when the smuX.source.offmode attribute is set to smuX.OUTPUT_NORMAL.
Example
smua.source.offfunc = smua.OUTPUT_DCVOLTS
Sets the normal output-off mode to
source 0 V when the output is
turned off for SMU channel A.
Also see
Output-off modes (see "Output-off states" on page 2-59)
smuX.source.offlimitY
(on page 7-219)
smuX.source.offmode (on page 7-220)
smuX.source.output
(on page 7-221)
smuX.source.offlimitY
This attribute sets the limit (current or voltage) used when the source-measure unit (SMU) is in normal output-off
mode.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes SMU reset
Instrument reset
Recall
Saved setups Current: 1e-3 (1 mA)
Voltage: 40 (40 V)
Usage
sourceLimit = smuX.source.offlimitY
smuX.source.offlimitY = sourceLimit
sourceLimit
Set to the limit to be used when the SMU is in normal output-off mode
X
SMU channel (for example, smua.source.offlimiti applies to SMU channel A)
Y
SMU source function (v = voltage, i = current).
Details
Setting the current limit to lower than 1 mA may interfere with operation of the contact check function. See
smuX.contact.check()
(on page 7-186) and smuX.contact.r() (on page 7-187) for details.

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English