Section 8: Use the 4200A-CVIV Multi-Switch
Model 4200A-SCS Parameter Analyzer User's Manual
8-2
4200A-900-01 Rev. C / January 2019
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 a 4200-SMU or 4210-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 4210-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.
Hazardous voltages may be present on all output and guard terminals. To prevent electrical
shock that could cause injury or death, never connect or disconnect from the 4200A-SCS
while the output is on.
To prevent electric shock, test connections must be configured such that the user cannot
come in contact with test leads, conductors, or any device under test (DUT) that is in contact
with the conductors. It is good practice to disconnect DUTs from the instrument before
powering up the instrument. Safe installation requires proper shields, barriers, and grounding
to prevent contact with test lead and conductors.
