Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 8:
TSP command reference
2461-901-01 A/November 2015 8-171
smu.measure.rel.level
This attribute contains the relative offset value.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes
Restore configuration
Instrument reset
Power cycle
Measure configuration list
Function change
Configuration script
Measure configuration list
0
Usage
relValue = smu.measure.rel.level
smu.measure.rel.level = relValue
relValue
Relative offset value for measurements:
• Current: −7.35 A to 7.35 A (−10.5 A to 10.5 A pulsed)
• Resistance: −210e6 to 210e6
•
Voltage:
−
105 V to 105 V
Details
This command specifies the relative offset value that can be applied to new measurements. When
relative offset is enabled, all subsequent measured readings are offset by the value that is set for this
command.
You can set this value, or have the instrument acquire a value. If the instrument acquires the value,
read this setting to return the value that was measured internally.
If you have math, limits, or filter operations selected, you can set the relative offset value to include
the adjustments made by these operations. To include these operations, set
smu.measure.rel.level to smu.measure.read(). The adjustments from these operations are
not used if you use the smu.measure.rel.acquire() function to set the relative offset level.
Example
smu.measure.func = smu.FUNC_DC_CURRENT
smu.measure.rel.level = smu.measure.read()
smu.measure.rel.enable = smu.ON
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.
Also see
Relative offset (on page 3-79)
smu.measure.rel.acquire() (on page 8-169)
smu.measure.rel.enable (on page 8-170)

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV