Keithley SourceMeter 2470, User Manual

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Section 6: Measure I-V characteristics of FETs Model 2470 High Voltage SourceMeter Instrument User's Manual
6-14 2470-900-01 Rev. A /
May
2019
Send the following commands for this example application:
-- Reset the instrument, which also clears the buffer.
reset()
-- Set up the source function.
smu.source.func = smu.FUNC_DC_VOLTAGE
smu.source.ilimit.level = 10e-3
smu.source.level = 600
-- Set up measure function.
smu.measure.func = smu.FUNC_DC_CURRENT
smu.measure.terminals = smu.TERMINALS_REAR
smu.measure.autorange = smu.ON
smu.measure.nplc = 1
-- Turn on the output and initiate readings.
trigger.model.load("DurationLoop", 60, 0.2)
trigger.model.initiate()
-- Wait for the trigger model to complete.
waitcomplete()
smu.source.output = smu.OFF
-- Parse index and data into three columns.
print("Rdg #,", "Time (s),", "Current (A),")
for i = 1, defbuffer1.n do
print(string.format("%i, %.5f, %.6e", i, defbuffer1.relativetimestamps[i],
defbuffer1[i]))
end
The graph in the following figure demonstrates what the plotted drain leakage current might look like.
Figure 35: Drain leakage current graph