Keithley 2601 Reference Manual page 324

Section 12: Instrument Control Library
smuX.measure.rel.enableY
Attribute Relative measurement control (on/off).
Usage
rel = smuX.measure.rel.enableY
smuX.measure.rel.enableY = rel
Set
rel
or
smuX.REL_OFF
0
or
smuX.REL_ON
1
When relative measurements are enabled, all subsequent measured readings will
Remarks
be offset by the specified relative offset value (see
Specifically, each returned measured relative reading will be the result of the
following calculation:
Relative reading = Actual measured reading – Relative offset value
Details See "Rel" in
Also see smuX.measure.rel.levelY
Enables relative voltage measurements for SMU A:
Example
smua.measure.rel.enablev = smua.REL_ON
smuX.measure.rel.levelY
Attribute Offset value for relative measurements.
Usage
relval = smuX.measure.rel.levelY
smuX.measure.rel.levelY = relval
relval
When relative measurements are enabled (see smuX.measure.rel.enableY), all
Remarks
subsequent measured readings will be offset by the specified relative offset value.
Specifically, each returned measured relative reading will be the result of the
following calculation:
• Relative reading = Actual measured reading – Relative offset value
Details See "Rel" in
smuX.measure.rel.enableY
Also see
Performs a voltage measurement and uses it as the relative offset value:
Example
smua.measure.rel.levelv = smua.measure.v()
12-64
X = SMU channel (a or b)
Y = SMU measure function (v, i, r or p)
where: v = voltage, i = current, r = resistance, p = power
to one of the following values:
Section 6.
X = SMU channel (a or b)
Y = SMU measure function (v, i, r or p)where:
v = voltage, i = current, r = resistance, p = power
Section 6.
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Series 2600 System SourceMeter® Instruments Reference Manual
-- Reads relative state.
-- Writes relative state.
Disables relative measurements.
Enables relative measurements.
smuX.measure.rel.levelY
-- Reads relative offset level.
-- Writes relative offset level.
Relative offset value.
--
Section Topics
).
2600S-901-01 Rev. C / January 2008