Section 2: General operation Model 2651A High Power System SourceMeter® Instrument Reference Manual
2-14 2651A-901-01 Rev. A / March 2011
Remote compliance limit
The table below summarizes basic commands to program the compliance limit. See Programming
commands for more details on these commands. To program the compliance, simply send the
command using the desired parameter. The following programming example illustrates how to set the
current and voltage compliance to 50 mA, 4 V, and 1 W respectively:
smua.source.limiti = 50e-3
smua.source.limitv = 4
smua.source.limitp = 1
The following programming example illustrates how to print the compliance state:
print(smua.source.compliance)
A returned value of 1 indicates that the voltage limit has been reached if the unit is configured as a
current source, or that the current limit has been reached if the unit is configured as a voltage source.
Compliance commands
Command Description
smua.source.limiti = limit
Set current compliance limit.
smua.source.limitv = limit
Set voltage compliance limit.
smua.source.limitp = limit
Set power compliance limit.
compliance = smua.source.compliance Test if in compliance (true = in
compliance; false = not in compliance).
Basic circuit configurations
The fundamental source-measure configurations for the Model 2651A are shown in the figure below.
When sourcing voltage, you can measure current or voltage (configuration A). When sourcing current,
you can measure voltage or current (configuration B). See Basic circuit configurations
(on page 4-14)
detailed information on these circuit configurations.
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