Section 4: Source-measure hardware
Model 4200A-SCS Source-Measure Unit (SMU) User's Manual
4-16
4200A-SMU-900-01 Rev. A December 2020
SENSE terminal
The SENSE terminal is a standard triaxial connector used to apply the ground unit SENSE signal to
the DUT in a remote sense application. The center pin is SENSE, the inner shield is GUARD, and the
outer shield is circuit COMMON. When the ground unit SENSE signal is connected to a DUT, all
SMU/preamplifier measurements are made relative to this DUT connection.
COMMON terminal
The COMMON terminal is a binding post that provides access to circuit COMMON.
Normally, a link is connected between ground unit COMMON and chassis ground, but it may be
necessary to remove the link to avoid measurement problems caused by ground loops or electrical
interference. Refer to
(on page 6-11) for details.
