4-16 Basic Operation Series 2600 System SourceMeters Reference Manual
2600S-901-01 Rev. A / May 2006 Return to Section 4 topics
Requesting readings
You can request readings by including the appropriate measurement command
as the argument for the print command. For example, the following will request
a channel A current reading:
print(smua.measure.i())
Source-measure programming example
The command sequence for a basic source-measure procedure is shown below.
These commands set up the SourceMeter as follows:
• Source function and range: volts, auto range
• Source output level: 5V
• Current compliance: 10mA
• Measure function and range: current, 10mA
smua.reset() --Restore Series 2600 defaults.
smua.source.func = smua.OUTPUT_DCVOLTS --Select voltage source function.
smua.source.autorangev = smua.AUTORANGE_ON --Set source range to auto.
smua.source.levelv = 5 --Set voltage source to 5V.
smua.source.limiti = 10e-3 --Set current limit to 10mA.
smua.measure.rangei = 10e-3 --Set current range to 10mA.
smua.source.output =smua.OUTPUT_ON --Turn on output.
print(smua.measure.i()) --Request current reading.
smua.source.output =smua.OUTPUT_OFF --Turn off output.
Measure only
In addition to being used for conventional source-measure operations, the
SourceMeter can also be used to measure only voltage or current. Perform the
following steps to use the SourceMeter to measure voltage or current:
1. Select source-measure functions.
Measure voltage only (voltmeter) — Press SRC to select the I-Source, and
press MEAS to select the voltage measurement function.
Measure current only (ammeter) — Press SRC to select the V-Source, and
press MEAS to select the current measurement function.
2. Set source and compliance levels.
Use the editing procedure provided in steps 1 and 2 of the “Front panel
source-measure procedure” described earlier in this section to edit the
source and compliance levels as follows:
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