2600S-901-01 Rev. C / January 2008
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4-15
Series 2600 System SourceMeter® Instruments Reference Manual
Section 4: Basic Operation
2. Select SENSE-MODE, then press ENTER.
3. Choose 2-WIRE or 4-WIRE, as desired, and then press ENTER or the Rotary Knob.
Remote sense selection
Use the
smuX.sense
command to control sense selection by remote. For example, send this
command to enable 4-wire sensing:
smua.sense = smua.SENSE_REMOTE
and
for details.
Remote ohms programming
The following paragraphs summarize basic commands necessary for remote ohms programming
and also give a programming example for a typical ohms measurement situation.
Remote ohms command
Use the following command to obtain a resistance reading:
reading = smuX.measure.r()
for more commands necessary to set up source and measure functions, and also
for more details.
Ohms programming example
The command sequence for a typical ohms measurement is shown below. These commands set
up the SourceMeter as follows:
• Source function: current, 10mA range, 10mA output
• Voltage measure range: auto
• Voltage compliance: 10V
• Sense mode: 4-wire
smua.reset() --Restore Series 2600 defaults.
smua.source.func = smua.OUTPUT_DCAMPS --Select current
source function.
smua.source.rangei = 10e-3 --Set source range to 10mA.
smua.source.leveli = 10e-3 --Set current source to 10mA.
smua.source.limitv = 10 --Set voltage limit to 10V.
smua.sense = smua.SENSE_REMOTE --Enable 4-wire ohms.
smua.measure.autorangev = smua.AUTORANGE_ON --Set voltage
range to auto.
smua.source.output = smua.OUTPUT_ON --Turn on output.
print(smua.measure.r()) --Get resistance reading.
smua.source.output = smua.OUTPUT_OFF --Turn off output.
