Keithley 2461 Reference Manual

Section
8: TSP command reference Model 2461 Interactive SourceMeter® Instrument
Reference Manual
8-158 2461-901-01 A/November 2015
smu.measure.limit[Y].low.value
This attribute specifies the lower limit for limit tests.
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
−1
Usage
lowLimit = smu.measure.limit[Y].low.value
smu.measure.limit[Y].low.value = lowLimit
lowLimit
The low limit value of limit
Y
(-9.99999E+11 to 9.99999E+11)
Y
Limit number: 1 or 2
Details
This command sets the lower limit for the limit Y test for the selected measure function. When limit Y
testing is enabled, this causes a fail indication to occur when the measurement value is less than this
value.
Example
See the example in smu.measure.limit[Y].fail (on page 8-155).
Also see
smu.measure.limit[Y].enable (on page 8-154)
smu.measure.math.enable
This attribute enables or disables math operations on measurements for the selected measurement function.
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
smu.OFF
Usage
value = smu.measure.math.enable
smu.measure.math.enable = value
value
The math enable setting:
• Disable: smu.OFF
• Enable:
smu.ON
Details
When this command is set to on, the math operation specified by the math format command is
performed before completing a measurement.

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