High Voltage SourceMeter Instrument Reference Manual Section 4:
2470-901-01 Rev. A / May 2019 4-27
Using TSP commands:
Send the following code:
reset()
smu.measure.func = smu.FUNC_DC_CURRENT
smu.measure.autorange = smu.ON
smu.measure.unit = smu.UNIT_OHM
smu.measure.count = 5
smu.source.func = smu.FUNC_DC_VOLTAGE
smu.source.level = 5
smu.source.ilimit.level = 0.01
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 64: Resistance measurement SVMI and reading ohms
Source current, measure voltage, and set measure units to ohms
If you want to make resistance readings by sourcing current and measuring voltage, you can use this
method.
The examples below use a 100 kΩ device under test. The code:
• Makes five readings by sourcing 5e-6 A
• Measures voltage with autorange enabled
• Sets the measure units to ohms
• Uses offset compensation
• Retrieves the source and measure values
Even though the measurement units are in ohms, the measurement range is 2 V.
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