Keithley SourceMeter 2600 Series Reference Manual page 351

Series 2600 System SourceMeters Reference Manual
smuX.measure.rel.enableY
Attribute Relative measurement control (on/off).
Usage
rel = smuX.measure.rel.enableY
smuX.measure.rel.enableY = rel
Set
rel
or
0
or
1
Remarks When relative measurements are enabled, all subsequent measured readings will 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
Remarks When relative measurements are enabled (see smuX.measure.rel.enableY), all
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
Also see smuX.measure.rel.enableY
Example Performs a voltage measurement and uses it as the relative offset value:
smua.measure.rel.levelv = smua.measure.v()
X = SMU channel (a or b)
Y = SMU measure function (v, i, r or p) where:
to one of the following values:
Disables relative measurements.
smuX.REL_OFF
Enables relative measurements.
smuX.REL_ON
Section 6.
X = SMU channel (a or b)
Y = SMU measure function (v, i, r or p) where:
Relative offset value.
Section 6.
Return to
Instrument Control Library 12-77
v = voltage, i = current, r = resistance, p = power
-- Reads relative state.
-- Writes relative state.
smuX.measure.rel.levelY
v = voltage, i = current, r = resistance, p = power
-- Reads relative offset level.
-- Writes relative offset level.
Section 12 topics 2600S-901-01 Rev. A / May 2006
).