2600AS-901-01 Rev. B / September 2008
Return to
20-15
Series 2600A System SourceMeter® Instruments Reference Manual
Section 20: Calibration
Step 3. Current Calibration
Models 2601A/2602A/2611A/2612A:
1.
Connect the Series 2600A to the digital multimeter (see
), and select the
multimeter DC current function.
2.
Send this command to initialize current calibration:
smua.source.func = smua.OUTPUT_DCAMPS
3.
Perform each calibration step listed in
(Model 2601A/2602A),
(Model
2611A/2612A), or (Model 2635A/2636A):
a.
Select the range being calibrated with this command:
smua.source.rangei = range
(Note that it is not necessary to set the measure range for calibration.) For example, for
the 1A range, the following command would be sent:
smua.source.rangei = 1
b.
Select the correct sense mode based on the calibration step from
,
, or , for example:
smua.sense = smua.SENSE_LOCAL
c.
Select positive polarity, then set the source output to the positive zero value:
smua.cal.polarity = smua.CAL_POSITIVE
smua.source.leveli = 1e-10
d.
Turn on the output:
smua.source.output = smua.OUTPUT_ON
e.
Allow the readings to settle, then get both the multimeter and Series 2600A current read-
ings at the positive zero value (the Series 2600A measurement is not necessary if this cal-
ibration 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.i()
f.
Turn off the output:
smua.source.output = smua.OUTPUT_OFF
g.
Set the source output to the positive full-scale value for the present range, for example:
smua.source.leveli = 0.9
h.
Turn on the output:
smua.source.output = smua.OUTPUT_ON
i.
Allow the readings to settle, then get both the multimeter and Series 2600A voltage read-
ings at the positive full-scale output value (the Series 2600A measurement is not neces-
sary if calibration 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.i()
j.
Turn off the output:
smua.source.output = smua.OUTPUT_OFF