Section 8: Use the 4200A-CVIV Multi-Switch 4200A-SCS Parameter Analyzer User's Manual
8-2 4200A-900-01 Rev. D/April 2020
Equipment required
• One 4200A-SCS with the following instruments:
▪ Four 420x-SMUs or 421x-SMUs
▪ Four 4200-PAs or 4200A-CVIV-SPTs (two 4200A-CVIV-SPTs are supplied with the
4200A-CVIV)
▪ One 421x-CVU
• One 4200A-CVIV
• Four 4200-TRX-2 or 4200-MTRX-2 triaxial cables (supplied with the SMU)
• Four 4200-TRX-0.75 triaxial cables, 0.75 m (30 in.)
• Four CA-447A SMA cables (supplied with the CVU)
• One shielded four-terminal test fixture with triaxial inputs
Device connections
To use 4200-PA preamplifiers with the 4200A-CVIV, the preamplifiers are installed in the 4200A-CVIV
chassis. If you are not using 4200-PA preamplifiers, you must install 4200A-CVIV-SPT Pass-Thru
modules in the 4200A-CVIV chassis and connected to an SMU using triaxial cables. For more
information on installing and connecting preamplifiers and Pass-Thru modules, see the Model
4200A-CVIV Multi-Switch User’s Guide.
You will also make connections from the CVU to the SMA inputs of the 4200A-CVIV using the
CA-447A SMA cables supplied with the CVU. The Model 4200A-CVIV Multi-Switch User’s Guide
contains additional connection information.
From the output of the 4200A-CVIV, use the 4200-TRX-0.75 triaxial cables to connect the CVIV to the
shielded test fixture. The triaxial terminals on the shielded test fixture allow you to connect directly to
the MOSFET while maintaining a completely shielded and guarded test setup. The triaxial cables can
also be connected to a wafer probing station. A triaxial-to-coaxial adapter can be used to connect to
test fixtures or probe stations that only have coaxial inputs.
The inner shield of the triaxial cable can have voltages up to 200 V present during SMU operation.
Any triaxial-to-coaxial adapter used for conversion should connect the inner conductor and the outer
shield to the coaxial connector only.
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