SourceMeter® Instrument User's Manual Section 7: Measuring I-
V characteristics of FETs
2450-900-01 Rev. E / August 2019 7-5
Device connections
To perform a drain family of curves, configure both instruments to source voltage and measure current.
In this circuit, you connect the Force HI terminal of 2450 #2 to the gate of the MOSFET, and connect
the Force HI terminal of 2450 #1 to the drain.
You connect the source terminal of the MOSFET to the Force LO terminals of both 2450 instruments.
You need a third 2450 if you want to source and measure from all three terminals.
The following figure shows an I-V test configuration for a MOSFET using two 2450 instruments.
Figure 38: Three-terminal I-V test configuration for a MOSFET
The following figure shows the connections from the rear-panel terminals of both 2450 instruments to
the MOSFET.
Figure 39: Two Model 2450s configured to test a three-terminal MOSFET
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