SourceMeter® Instrument User's Manual Section 5: Measuring low-
2450-900-01 Rev. E / August 2019 5-5
Low-resistance measurements
This application demonstrates how to use the 2450 to measure a low-resistance device. You can
measure from the front panel or over the remote interface using SCPI code or TSP code.
For this application, you will:
• Turn on the instrument.
• Select the source current and measure resistance function.
• Set the current source value.
• Select four-wire (remote sense) mode. This eliminates the effect of lead resistance on
measurement accuracy.
• Enable offset compensation. This reduces offset caused by thermoelectric voltages. For
information about offset compensation, see “What is offset compensation?” in the Model 2450
Reference Manual.
• Turn on the source output and start making measurements.
• Generate readings from the front panel or the remote interface.
• Turn the source output off.
Set up the measurement from the front panel
To set up the application from the front panel:
1. Make connections from the 2450 to the device under test, as described in Device connections
(on
page 5-2).
2. Turn on the instrument.
3. Press the FUNCTION key.
4. Under Source Current and Measure, select Resistance. A warning message is displayed.
5. Select OK to clear the error message.
6. Press the HOME key.
7. In the SOURCE I area, select the button next to Source. Select a source value appropriate to
your device.
8. Press the MENU key. Under Measure, select Settings.
9. Set Sense to 4-Wire Sense.
10. Set Offset Compensation to On.
11. Press the HOME key.
12. Press the OUTPUT ON/OFF switch to enable the output.
13. Select the Measurement Method indicator.
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