Three-Terminal Device Connections - Keithley 4200A-SCS User Manual

Model 4200A-SCS Pulse Card (PGU and PMU) User's Manual

Three-terminal device connections

A three-terminal device can be connected using either two or three PMU channels, depending on if
source and/or measuring must be performed at each device pin. An example of both channels of a
single PMU connected to a three-terminal MOSFET is shown in the following figure. In this example,
connect the gate terminal to channel 1 of the PMU and connect the drain terminal to channel 2.
Connect the source terminal to the outside shield of channel 2.
Figure 12: Three-terminal device connections to a PMU using both channels
If ultra-fast I-V sourcing and measuring is required at each device terminal, then a second PMU is
required for the source terminal. Up to four PMUs (eight channels) can be installed in one 4200A-SCS
mainframe.
4200A-PMU-900-01 Rev. A December 2020
Section 2: Connections
2-11