Triax Cables; Basic Connections - Keithley 4200-SCS Reference Manual

Section 2: Installation

Triax cables

Triax cables are supplied to make connections to the DUT (device under test). With preamps
installed, use the low noise triax cables, which are terminated with 3-slot triax connectors on both
ends. One end of the cable connects to the preamp and the other end connects to the DUT test
fixture or probe station.
Figure 2-6
Triax cable Model 4200-TRX-X
If your system does not have preamps installed, use the cables that have a miniature triax
connector on one end and a standard 3-slot triax connector on the other end. The cable end
terminated with the miniature connector connects directly to the SMU, and the other end connects
to the test fixture or probe station.
Figure 2-7
Triax cable Model 4200-M TRX-X
CAUTION

Basic connections

The simplest method to connect SMUs to the DUT is to use one SMU for each terminal of the
device. When setting up a test, the FORCE terminal (center conductor) of the SMU is used to
apply voltage or current to the device. The FORCE terminal or ground unit can also be used to
connect the device terminal to the COMMON circuit.
NOTE
2-8
With preamps installed, never make connections directly to any of the
miniature triax connectors on the SMU modules; this may result in damage
to the SMU or DUT or may produce corrupt data.
Complete details on connections (including SENSE terminal connections) are
provided in Section 4, Connections and
Return to
Configuration.
Section Topics
Model 4200-SCS Reference Manual
4200-901-01 Rev. S / May 2017