Keithley 2461 Reference Manual

Section
2: General operation Model 2461 Interactive SourceMeter® Instrument
Reference Manual
2-108 2461-901-01 A/November 2015
The front-panel display will look similar to the following example.
Figure 68: Resistance measurement SIMV SCPI example
Using TSP commands:
Send the following code:
reset()
smu.measure.func = smu.FUNC_DC_VOLTAGE
smu.measure.autorange = smu.ON
smu.measure.unit = smu.UNIT_OHM
smu.measure.count = 5
smu.source.func = smu.FUNC_DC_CURRENT
smu.source.level = 5e-6
smu.source.vlimit.level = 10
smu.source.output = smu.ON
smu.measure.read(defbuffer1)
for i = 1, defbuffer1.n do
print(defbuffer1.relativetimestamps[i], defbuffer1[i])
end
smu.source.output = smu.OFF
The front-panel display will look similar to the following example.
Figure 69: Resistance measurement SIMV and read ohms

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