System SourceMeter® Instrument Reference Manual Section 7:
2600BS-901-01 Rev. B / May 2013 7-225
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 volts low range for Models
2601B/2602B/2604B SMU A to 1
V. This prevents the source from
using the 100 mV range when
Also see
smuX.source.autorangeY (on page 7-217)
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.
Type TSP-Link accessible Affected by Where saved Default value
Instrument reset
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:
0 or smuX.OUTPUT_DCAMPS: Source 0 A
X
.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 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.