Model 2601B-PULSE System SourceMeter Instrument Reference Manual Section 11: TSP command reference
2601B-PULSE-901-01A April 2020 11-231
smua.source.lowrangeY
This attribute sets the lowest source range that is used during autoranging.
SMU reset
Instrument reset
Recall setup
Voltage: 100e-3 (100 mV)
Current: 100e-9 (100 nA)
Usage
sourceRangeLow = smua.source.lowrangeY
smua.source.lowrangeY = sourceRangeLow
Set to the lowest voltage (in volts) or current (in amperes) range to be used
SMU source function (v = voltage, i = current)
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 will be changed to the range specified by sourceRangeLow.
Example
smua.source.lowrangev = 1
Sets the voltage low range to 1 V. This prevents the source
from using the 100 mV range when sourcing voltage.
Also see
smua.source.autorangeY (on page 11-224)
smua.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 = smua.source.offfunc
smua.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 smua.OUTPUT_DCAMPS: Source 0 A
â–ª 1 or smua.OUTPUT_DCVOLTS: Source 0 V
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