7: TSP command reference Series 2600B System SourceMeter® Instrument
7-238 2600BS-901-01 Rev. C / August 2016
Usage
sFunction = smuX.source.func
smuX.source.func = sFunction
The source function; set to one of the following values:
0 or smuX.OUTPUT_DCAMPS: Selects the current source function
or
X
: Selects the voltage source function
Source-measure unit (SMU) channel (for example, smua.source.func applies to
Details
Reading this attribute indicates the output function of the source for the specified SMU channel.
Setting this attribute configures the specified SMU channel as either a voltage source or a current
source.
Example
smua.source.func = smua.OUTPUT_DCAMPS
Sets the source function of SMU
channel A to be a current source.
Also see
smuX.source.levelY (on page 7-239)
smuX.source.output (on page 7-244)
smuX.source.highc
This attribute enables or disables high-capacitance mode.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes SMU reset
Instrument reset
Saved setup 0 (smuX.DISABLE)
Usage
highC = smuX.source.highc
smuX.source.highc = highC
The state of the high-capacitance mode; set to one of the following values:
0 or smuX.DISABLE: Disables high-capacitance mode
X
.ENABLE: Enables high-capacitance mode
Source-measure unit (SMU) channel (for example, smua.source.highc applies
to SMU channel A)
Details
When enabled, the high-capacitance mode has the following effects on the SMU settings:
• smuX.measure.autorangei is set to smuX.AUTORANGE_FOLLOW_LIMIT and cannot be changed
• Current ranges below 1 µA are not accessible
• If smuX.source.limiti is less than 1 µA, it is raised to 1 µA
• If smuX.source.rangei is less than 1 µA, it is raised to 1 µA
• If smuX.source.lowrangei is less than 1 µA, it is raised to 1 µA
• If smuX.measure.lowrangei is less than 1 µA, it is raised to 1 µA
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