Keithley 2601 Reference Manual page 461

Series 2600 System SourceMeter® Instruments Reference Manual
k.
l.
m.
n.
o.
p.
q.
r.
s.
t.
u.
2600S-901-01 Rev. C / January 2008
Send the source calibration command using the range, zero and +FS multimeter read-
ings, and zero and +FS source values for the parameters:
smua.source.calibratei(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 1A range:
smua.source.calibratei(1,1e-10,1e-4,0.9,0.88)
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:
smua.measure.calibratei(range,Z_rdg,DMM_Z_rdg,
FS_rdg,DMM_FS_rdg)
Where: range
Z_rdg
DMM_Z_rdg
FS_rdg
DMM_FS_rdg
Typical 1A range values:
smua.measure.calibratei(1,1e-5,1e-4,0.89,0.88)
Select negative polarity, then set the source output to the negative zero value, for exam-
ple:
smua.cal.polarity = smua.CAL_NEGATIVE
smua.source.leveli = -1e-10
Turn on the output:
smua.source.output = smua.OUTPUT_ON
Allow the readings to settle, then get both the multimeter and Series 2600 current read-
ings at the negative zero full-scale 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.i()
Turn off the output:
smua.source.output = smua.OUTPUT_OFF
Set the source output to the negative full scale value, for example:
smua.source.leveli = -0.9
Turn on the output:
smua.source.output = smua.OUTPUT_ON
Allow the readings to settle, then get both the multimeter and Series 2600 current read-
ings at the negative full-scale output value (the Series 2600 measurement is not neces-
sary 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()
Turn off the output:
smua.source.output = smua.OUTPUT_OFF
Send the source calibration command using the -range, -zero and -FS multimeter read-
ings, and -zero and -FS source values for the parameters:
smua.source.calibratei(-range,src_Z,DMM_Z_rdg,
src_FS,DMM_FS_rdg)
Where: -range
Return to Section Topics
present calibration range
+zero 2600 source output value
+zero DMM measurement
+FS 2600 source output value
+FS DMM measurement
present calibration range
+zero 2600 measurement
+zero DMM measurement
+FS 2600 measurement
+FS DMM measurement
negative of the present calibration range
Section 16: Calibration
16-15