Keithley 2600a series, Reference Manual, Page: 607 / 696

2600AS-901-01 Rev. B / September 2008 Return to Section Topics 20-11
Series 2600A System SourceMeter® Instruments Reference Manual Section 20: Calibration
NOTE (Note that it is not necessary to set the measure range for
calibration.) For example, for the Model 2601A/2602A 1V range, the
following command would be sent:
smua.source.rangev = 1
For Models 2611A/2612A/2635A/2636A 2V range, the following
command would be sent:
smua.source.rangev = 2
2) Select the correct sense mode based on the calibration step from Table 20-2 , or
Table 20-3 , or , for example:
smua.sense = smua.SENSE_LOCAL
3) Select positive polarity, then set the source output to the positive zero value:
smua.cal.polarity = smua.CAL_POSITIVE
smua.source.levelv = 1e-10
4) Turn on the output:
smua.source.output = smua.OUTPUT_ON
5) Allow the readings to settle, then get both the multimeter and Series 2600A voltage
readings at the positive zero value (the Series 2600A measurement is not
necessary if this calibration step is being done on the CALA sense mode). The two
measurements should be made as close as possible in time. Use this command for
the Series 2600A:
Z_rdg = smua.measure.v()
6) Turn off the output:
smua.source.output = smua.OUTPUT_OFF
7) Set the source output to the positive full-scale value for the present range, for
example:
smua.source.levelv = 0.9
Model 2601A/2602A
smua.source.levelv = 1.8
Model 2611A/2612A/2635A/2636A
8) Turn on the output:
smua.source.output = smua.OUTPUT_ON
9) Allow the readings to settle, then get both the multimeter and Series 2600A voltage
readings at the positive full-scale output value (the Series 2600A measurement is
not necessary if this calibration step is being done on the CALA sense mode). The
two measurements should be made as close as possible in time. Use this command
for the Series 2600A:
FS_rdg = smua.measure.v()
10) Turn off the output:
smua.source.output = smua.OUTPUT_OFF
11) Send the source calibration command using the range, +zero and +FS multimeter
readings, and +zero and +FS source values for the parameters:
smua.source.calibratev(range,src_Z,DMM_Z_rdg,
src_FS,DMM_FS_rdg)
Where:
range -- present calibration range
src_Z -- +zero 2600A source output value
DMM_Z_rdg -- +zero DMM measurement
src_FS -- +FS 2600A source output value
DMM_FS_rdg -- +FS DMM measurement
Typical values for the Model 2601A/2602A 1V range:
smua.source.calibratev(1,1e-10,1e-5,0.9,0.903)