Keithley 2601 Reference Manual page 457

Series 2600 System SourceMeter® Instruments Reference Manual
2600S-901-01 Rev. C / January 2008
13) If this step is not on the CALA sense mode, send the measure calibration command
using the multimeter and Series 2600 readings, and range setting for the
parameters:
14) smua.measure.calibratev(range,Z_rdg,DMM_Z_rdg, FS_rdg,DMM_FS_rdg)
Where:
range
Z_rdg
DMM_Z_rdg
FS_rdg
DMM_FS_rdg
Typical Model 2601/2602 1V range values:
smua.measure.calibratev(1,1e-4,1e-5,0.92,0.903)
Typical Model 2611/2612/2635/2636 2V range values:
smua.measure.calibratev(2,1e-4,1e-5,1.82,1.802)
15) Select negative polarity, then set the source output to the negative zero value, for
example:
smua.cal.polarity = smua.CAL_NEGATIVE
smua.source.levelv = -1e-10
16) Turn on the output:
smua.source.output = smua.OUTPUT_ON
17) Allow the readings to settle, then get both the multimeter and Series 2600 voltage
readings at the negative zero value. (The Series 2600 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 2600:
Z_rdg = smua.measure.v()
18) Turn off the output:
smua.source.output = smua.OUTPUT_OFF
19) Set the source output to the negative full scale value, for example:
smua.source.levelv = -0.9(Model 2601/2602)
smua.source.levelv = -1.8(Model 2611/2612/2635/2636)
20) Turn on the output:
smua.source.output = smua.OUTPUT_ON
21) Allow the readings to settle, then get both the multimeter and Series 2600 voltage
readings at the negative full-scale output value (the Series 2600 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 2600:
FS_rdg = smua.measure.v()
22) Turn off the output:
smua.source.output = smua.OUTPUT_OFF
23) 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
src_Z
DMM_Z_rdg
src_FS
DMM_FS_rdg
Typical values for the Model 2601/2602 1V range:
smua.source.calibratev(-1,-1e-10,-1e-4,-0.9,-0.896)
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present calibration range
+zero 2600 measurement
+zero DMM measurement
+FS 2600 measurement
+FS DMM measurement
negative of the present calibration range
-zero 2600 source output value
-zero DMM measurement
-FS 2600 source output value
-FS DMM measurement
Section 16: Calibration
16-11