Basic Circuit Configurations - Keithley 4200-SCS Reference Manual

Section 3: Source-Measure Hardware

Basic circuit configurations

Ground unit connections
Figure 3-18
FORCE signal is circuit COMMON. The GNDU SENSE terminal is connected to each SMU
SENSE LO signal through a unique auto-sense resistor. When the GNDU SENSE signal is
connected to a DUT, all measurements will be made relative to this DUT connection.
Figure 3-18
Ground unit connections
Ground Unit
Ground unit DUT connections
Figure 3-19
make full-kelvin remote sense measurements. Similarly,
shown in these figures, the GNDU FORCE signal provides the return path for SMU or preamp
FORCE current. See the
the ground unit, SMU, and preamp connections.
3-20
shows how the GNDU signals are related to the SMU signals. Note that the GNDU
CHASSIS
Removable
Ground Link
shows the connections necessary to use the GNDU in conjunction with a SMU to
Basic source-measure connections, page 4-3
Return to Section Topics
Internal 4200-SCS connections
to each SMU SENSE LO signal
50kW
COMMON
32V
max
Figure 3-20
Model 4200-SCS Reference Manual
SENSE
FORCE
includes the preamp. As
for detailed information on
4200-901-01 Rev. S / May 2017