Keithley 2601 Reference Manual

2600S-901-01 Rev. C / January 2008 Return to Section Topics 7-9
Series 2600 System SourceMeter® Instruments Reference Manual Section 7: Buffer (Data Store)
Buffer programming examples
Defined buffer example
The listing below shows a programming example for storing data using the pre-defined Buffer 1 for
Channel A. The SourceMeter loops for voltages from 0.01V to 1V with 0.01V steps (essentially
performing a staircase sweep), stores 100 current readings and source values in Buffer 1, and
then recalls all 100 readings and source values.
smua.reset() -
-
Restore Series 2600 defaults.
display.screen = 0 -
-
Select Channel A display.
display.smua.measure.func =
display.MEASURE_DCAMPS
-
-
Display current.
smua.measure.autorangei = smua.AUTORANGE_ON -
-
Select measure I auto range.
format.data = format.ASCII -
-
Select ASCII data format.
smua.nvbuffer1.clear() -
-
Clear Buffer 1.
smua.nvbuffer1.appendmode = 1 -
-
Enable append buffer mode.
smua.nvbuffer1.collectsourcevalues = 1 -
-
Enable source value storage.
smua.measure.count = 1 -
-
Set count to 1.
smua.source.func = smua.OUTPUT_DCVOLTS -
-
Select source voltage function.
smua.source.levelv = 0.0 -
-
Set bias voltage to 0V.
smua.source.output =smua.OUTPUT_ON -
-
Turn on output.
for v = 0.01, 1.0, 0.01 do -
-
Loop for voltages from 0.01 to 1V.
smua.source.levelv = v -
-
Set source voltage.
smua.measure.i(smua.nvbuffer1) -
-
Measure current, store in buffer.
waitcomplete() -
-
Wait for reading to complete.
end -
-
End loop.
smua.source.output =smua.OUTPUT_OFF -
-
Turn off output.
printbuffer(1, 100, smua.nvbuffer1.readings) -
-
Return readings 1-100.
printbuffer(1, 100,
smua.nvbuffer1.sourcevalues)
-
-
Return source values 1-100.

Keithley 2601 Specifications

General

Brand	Keithley
Model	2601
Category	Measuring Instruments
Language	English