Keithley 2461 Reference Manual

Section
3: Functions and features Model 2461 Interactive SourceMeter® Instrument
Reference Manual
3-62 2461-901-01 A/November 2015
Using TSP commands
reset()
smu.measure.func = smu.FUNC_DC_CURRENT
smu.measure.autorange = smu.ON
smu.source.func = smu.FUNC_DC_VOLTAGE
smu.source.range = 20
smu.source.ilimit.level = 0.02
smu.source.sweeplinear("RES", 0, 10, 21, 200e-3)
trigger.model.initiate()
waitcomplete()
printbuffer(1, 21, defbuffer1.sourcevalues, defbuffer1.readings)
Logarithmic sweep with a current source
The following examples perform a logarithmic sweep using a current source. They perform the
following actions:
• Reset the instrument to its defaults.
• Set the source function to current.
• Set the source range to 100 mA.
• Set up a logarithmic sweep from 100 µA to 100 mA in 10 steps with a source delay of 10 ms, a
sweep count of 1, and a fixed source range. In TSP only, name the configuration list that is
created for this sweep RES.
• Set the measure function to current.
• Set the current range to 100 µA.
• Start the sweep.
No buffer is defined, so the data is stored in defbuffer1. See Reading buffers (on page 3-2) for
more information on reading buffers.
Using SCPI commands
*RST
SOUR:FUNC CURR
SOUR:CURR:RANG 100e-3
SOUR:CURR:VLIM 20
SENS:FUNC "VOLT"
SENS:VOLT:RANG 20
SOUR:SWE:CURR:LOG 100e-6, 100e-3, 10, 10e-3
INIT
*WAI
TRAC:DATA? 1, 10, "defbuffer1", SOUR, READ
Using TSP commands
reset()
smu.source.func = smu.FUNC_DC_CURRENT
smu.source.range = 100e-3
smu.source.vlimit.level = 20
smu.source.sweeplog("RES", 100e-6, 100e-3, 10, 10e-3)
smu.measure.func = smu.FUNC_DC_VOLTAGE
smu.measure.range = 20
trigger.model.initiate()
waitcomplete()
printbuffer(1, 10, defbuffer1.sourcevalues, defbuffer1.readings)

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