4: Sourcing and measuring 2470 High Voltage SourceMeter Instrument
4-26 2470-901-01 Rev. A / May 2019
Source voltage, measure current, and read ohms
If you want to make resistance readings by sourcing voltage and measuring current, you can use this
method.
The examples below use a 100 kΩ device under test. The code:
• Makes five readings by sourcing 5 V
• Measures current 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 10 µA.
Using SCPI:
Send the following code:
*RST
SENSe:FUNCtion "CURR"
SENSe:CURRent:RANGe:AUTO ON
SENSe:CURRent:UNIT OHM
SENSe:CURRent:OCOM ON
SOURce:FUNCtion VOLT
SOURce:VOLT 5
SOURce:VOLT:ILIM 0.01
SENSe:COUNT 5
OUTPut ON
TRACe:TRIGger "defbuffer1"
TRACe:DATA? 1, 5, "defbuffer1", SOUR, READ
OUTPut OFF
The front-panel display will look similar to the following example.
Figure 63: Resistance measurement using SVMI and reading ohms
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