Smu.measure.rel.level - Keithley 2450 Reference Manual

Section 8: TSP command reference
Details
When relative measurements are enabled, all subsequent measured readings are offset by the relative offset
value calculated when you acquire the relative offset value.
Each returned measured relative reading is the result of the following calculation:
Display value = Actual measured value - Relative offset value
Example
smu.measure.func = smu.FUNC_DC_VOLTAGE
rel_value = smu.measure.rel.acquire()
smu.measure.rel.enable = smu.ON
Also see
Relative offset
smu.measure.rel.acquire()

smu.measure.rel.level

smu.measure.rel.level
This attribute contains the relative offset value for measurements.
Type TSP-Link accessible
Attribute (RW) Yes
Usage
relValue = smu.measure.rel.level
smu.measure.rel.level = relValue
relValue
Details
This command specifies the relative offset value that is used for measurements. When relative offset is enabled,
all subsequent measured readings are offset by the value that is set for this command.
Example
smu.measure.func = smu.FUNC_DC_CURRENT
smu.measure.rel.level = smu.measure.read()
smu.measure.rel.enable = smu.ON
Also see
Relative offset
smu.measure.rel.acquire()
smu.measure.rel.enable
8-122
(on page 3-1)
(on page 8-121)
(on page 8-122)
Affected by
Restore configuration
Instrument reset
Power cycle
Measure configuration list
Function change
Relative offset value for measurements:
Current: −1 to 1
•
Resistance: –200000000 to 200000000
•
Voltage: −200 to 200
•
(on page 3-1)
(on page 8-121)
(on page 8-121)
Model 2450 Interactive SourceMeter® Instrument Reference Manual
Acquires a relative offset level value for voltage
measurements and turns the relative offset
feature on.
Where saved
Configuration script
Measure configuration list
Sets the measurement function to current,
performs a current measurement, uses it as
the relative offset value, and enables the
relative offset for current measurements.
Default value
0
2450-901-01 Rev. B/September 2013