Keithley 2601 Reference Manual

16-14 Return to Section Topics 2600S-901-01 Rev. C / January 2008
Section 16: Calibration Series 2600 System SourceMeter® Instruments Reference Manual
Step 3. Current Calibration
Models 2601/2602/2611/2612:
1. Connect the Series 2600 to the digital multimeter (see Figure 16-2), 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 Table 16-2 (Model 2601/2602), Table 16-3 (Model
2611/2612), or Table 16-4 (Model 2635/2636):
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 Table 16-2, Table 16-
3, or Table 16-4, 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 2600 current read-
ings at the positive zero value (the Series 2600 measurement is not necessary if this cali-
bration 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 2600:
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 2600 voltage read-
ings at the positive full-scale output value (the Series 2600 measurement is not necessary
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 2600:
FS_rdg = smua.measure.i()
j. Turn off the output:
smua.source.output = smua.OUTPUT_OFF

Keithley 2601 Specifications

General

Brand	Keithley
Model	2601
Category	Measuring Instruments
Language	English