2600S-900-01 Rev. C / January 2008 Return to Section Topics B-11
Series 2600 System SourceMeter
®
Instruments User’s Manual Appendix B: Frequently Asked Questions
Low-current measurement programming example
The command sequence for typical low-current measurements is shown below. The sequence
assumes that a 100GΩ resistor is being tested. These commands set the output voltage to 100V
and then measure and display both the current through the device as well as the resistance.
smua.reset() - Restore defaults.
smua.source.func = smua.OUTPUT_DCVOLTS - Set source to DCV.
smua.source.rangev = 200 - Select 200V source range
smua.source.levelv = 100 - Output 100V DC.
smua.measure.rangei = 1e-9 - Select 1nA range.
smua.source.limiti = 1e-9 - Set current limit to 1nA
smua.source.output = smua.OUTPUT_ON - Turn on output.
print(smua.measure.i()) - Display current reading.
print(smua.measure.r()) - Display resistance reading.
smua.source.output = smua.OUTPUT_OFF - Turn off output.
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