Keithley 2651A

Section 2: General operation Model 2651A High Power System SourceMeter® Instrument Reference Manual
2-70 2651A-901-01 Rev. A / March 2011
Source range commands*
Commands Description
smua.source.autorangei = smua.AUTORANGE_ON
Enable current source
autorange.
smua.source.autorangei = smua.AUTORANGE_OFF
Disable current source
autorange.
smua.source.autorangev = smua.AUTORANGE_ON
Enable voltage source
autorange.
smua.source.autorangev = smua.AUTORANGE_OFF
Disable voltage source
autorange.
smua.source.limiti = level
Set voltage source current
limit.
smua.source.limitv = level
Set current source voltage
limit.
smua.source.lowrangei = lowrange
Set lowest I source range for
autorange.
smua.source.lowrangev = lowrange
Set lowest V source range for
autorange.
smua.source.rangei = rangeval
Select manual current source
range.
smua.source.rangev = rangeval
Select manual voltage source
range.
* See Available ranges (on page 2-65).
Range programming example
The programming example below illustrates how to control both source and measure ranges. The
Model 2651A is set up as follows:
• Voltage source range: Auto
• Current measure range: 10 mA
• Voltage source current limit: 10 mA
-- Restore Model 2651A defaults.
smua.reset()
-- Set V source range to auto.
smua.source.autorangev = smua.AUTORANGE_ON
-- Select 10 mA measure range.
smua.measure.rangei = 1e-2
-- Set limit level to 10 mA.
smua.source.limiti = 1e-2