Section 9: TSP command reference Series 2600B System SourceMeter® instrument Reference Manual
9-246 2600BS-901-01 Rev. F/August 2021
Details
This attribute is used with source autoranging to put a lower bound on the range that is used. Lower
ranges generally require greater settling times. If you set a low range value, you might be able to
source small values with less settling time.
If the instrument is set to autorange and it is on a range lower than the one specified by
sourceRangeLow, the source range is changed to the range specified by sourceRangeLow.
Example
smua.source.lowrangev = 1
Sets volts low range for Models 2601B, 2602B, 2604B SMU A to 1 V.
This prevents the source from using the 100 mV range when sourcing
voltage.
Also see
smuX.source.autorangeY (on page 9-238)
smuX.source.offfunc
This attribute sets the source function that is used (source 0 A or 0 V) when the output is turned off and the
source-measure unit (SMU) is in normal output-off mode.
SMU reset
Instrument reset
Recall setup
Usage
offfunc = smuX.source.offfunc
smuX.source.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:
â–ª 0 or smuX.OUTPUT_DCAMPS: Source 0 A
â–ª 1 or smuX.OUTPUT_DCVOLTS: Source 0 V
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
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).
Example
smua.source.offmode = smua.OUTPUT_NORMAL
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.
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