Keithley 2461 Reference Manual

Section
2: General operation Model 2461 Interactive SourceMeter® Instrument
Reference Manual
2-112 2461-901-01 A/November 2015
The TSP commands that set up the measurement functions begin with smu.measure.
The sense commands are also specific to each measure function (voltage, current, or resistance). For
example, to set the NPLC cycles to 0.5 for the current measurement function, you would send:
smu.measure.func = smu.FUNC_DC_CURRENT
smu.measure.nplc = .5
For the voltage measurement function, you would send:
smu.source.func = smu.FUNC_DC_VOLTAGE
smu.measure.nplc = .5
For the resistance measurement function, you would send:
smu.source.func = smu.FUNC_RESISTANCE
smu.measure.nplc = .5
To make a measurement, you set the measurement function and then send the
smu.measure.read() command. For example, to make a current measurement, send the
commands:
smu.measure.func = smu.FUNC_CURRENT
print(smu.measure.read())
To make a voltage measurement, send the commands:
smu.measure.func = smu.FUNC_DC_VOLTAGE
print(smu.measure.read())
To make a resistance measurement, send the commands:
smu.measure.func = smu.FUNC_RESISTANCE
print(smu.measure.read())
For detailed application examples that use the TSP command language, see the User's Manual.
Command descriptions are provided in the TSP command reference (on page 8-1).

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