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Section 5: Measuring low-resistance devices
Model 2450 Interactive SourceMeter® Instrument User's Manual
5-4
2450-900-01 Rev. C / December 2013
Low-resistance measurements
This application demonstrates how to use the Model 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:
•
Reset 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 taking 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 Model 2450 to the device under test, as described in
(on page 5-1).
2. Reset the instrument:
a. Press the
MENU
key.
b. Under System, select
Manage
.
c. Select
System Reset
.
d. Select
OK
.
3. Press the
FUNCTION
key.
4. Under Source Current and Measure, select
Resistance
.
5. Press the
HOME
key.
6. In the SOURCE CURRENT area, select the button next to Source. Select the source value.
7. Press the
MENU
key. Under Measure, select
Settings
.
8. Select the button next to Sense Mode and choose
4-Wire Sense
.
9. Next to Offset Comp, select
On
.
10. Press the
HOME
key.
11. Press the
OUTPUT ON/OFF
switch to enable the output and start making measurements.
12. Press the
OUTPUT ON/OFF
switch to disable the output and stop making measurements.
The instrument displays the measurements in the MEASURE VOLTAGE area of the Home screen.