Section 3: Source-measure hardware
Model 4200A-SCS Parameter Analyzer Reference Manual
3-18
4200A-901-01 Rev. C / February 2017
SMU circuit COMMON connections
Some test situations require SMUs to be connected to each DUT terminal. In these situations, circuit
COMMON is not hardwired to any of the DUT terminals. Therefore, the SMUs must be able to
internally connect circuit COMMON to their FORCE signal when the test requires a DUT terminal to
be connected to COMMON. The next figure shows typical SMU connections using three SMUs to test
a transistor. Any of the three SMUs could be used to provide access to circuit COMMON simply by
programming it accordingly. See
(on page 6-1) for more detailed instructions on configuring a
SMU to provide a COMMON connection.
Figure 48: Typical SMU connections
Figure 49: Typical SMU COMMON connections schematic
