Keithley 2450 Reference Manual page 116

Model 2450 Interactive SourceMeter® Instrument Reference Manual
Resistance measurement methods
From the front panel, you can use one of the following methods to measure resistance with the
Model 2450:
•
Press FUNCTION and select source current and measure resistance
•
Press FUNCTION and select source voltage and measure resistance
•
Press QUICKSET and select Ohmmeter. When Ohmmeter is selected, the source current and
source limit are set automatically.
From a remote interface, you can use one of following methods to measure resistance with the
Model 2450:
•
Source voltage, measure current, and set measure units to ohms
•
Source current, measure voltage, and set measure units to ohms
•
Set the measure function to resistance. This sets the instrument to auto-ohms, which causes the
instrument to set the source current and source limit automatically.
Each of these methods is described in the following topics.
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.
2450-901-01 Rev. B/September 2013
Section 2: General operation
2-89