-SCS Parameter Analyzer Reference Manual Section 3: Source-
4200A-901-01 Rev. C / February 2017 3-19
Ground unit (GNDU) overview
The following topics describe:
• Basic circuit configurations
• Connectors
Basic characteristics
The ground unit, shown in the next figure, provides convenient access to circuit COMMON, which is
the measurement ground signal shared by all installed 4200A-SCS instrumentation. In addition, the
GNDU SENSE terminal provides access to the SMU SENSE LO signals.
Figure 50: Ground unit (GNDU) connectors