Keithley 2651A Reference Manual page 125

Section 3: Functions and features
Dual buffer example
The programming example below shows a script for storing both current and voltage readings using
buffer 1 for current and buffer 2 for voltage readings. The Model 2651A stores 100 current and
voltage readings and then recalls all 100 sets of readings.
-- Restore Model 2651A defaults.
smua.reset()
-- Select measure I autorange.
smua.measure.autorangei = smua.AUTORANGE_ON
-- Select measure V autorange.
smua.measure.autorangev = smua.AUTORANGE_ON
-- Select ASCII data format.
format.data = format.ASCII
-- Clear buffer 1.
smua.nvbuffer1.clear()
-- Clear buffer 2.
smua.nvbuffer2.clear()
-- Set buffer count to 100.
smua.measure.count = 100
-- Set measure interval to 0.1 s.
smua.measure.interval = 0.1
-- Select source voltage function.
smua.source.func = smua.OUTPUT_DCVOLTS
-- Output 1 V.
smua.source.levelv = 1
-- Turn on output.
smua.source.output = smua.OUTPUT_ON
-- Store current readings in buffer 1, voltage readings in buffer 2.
smua.measure.overlappediv(smua.nvbuffer1, smua.nvbuffer2)
-- Wait for buffer to fill.
waitcomplete()
-- Turn off output.
smua.source.output = smua.OUTPUT_OFF
-- Output buffer 1 readings 1 to 100.
printbuffer(1, 100, smua.nvbuffer1)
-- Output buffer 2 readings 1 to 100.
printbuffer(1, 100, smua.nvbuffer2)
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Model 2651A High Power System SourceMeter® Instrument Reference Manual
2651A-901-01 Rev. A / March 2011