Section 4: Source-measure hardware
Model 4200A-SCS Source-Measure Unit (SMU) User's Manual
4-2
4200A-SMU-900-01 Rev. A December 2020
Figure 53: Source-measure hardware overview
Basic SMU circuit configuration
The basic SMU circuit configuration is shown in the following figure. The SMU is essentially a voltage
or current source in series with a current meter, connected in parallel with a voltage meter. The
voltage limit (V-limit) and current limit (I-limit) circuits limit the voltage or current to the programmed
compliance value. In this example of local sensing, the SMU FORCE terminal is connected to DUT HI,
while DUT LO is connected to COMMON. See
Basic source-measure connections
(on page 2-1) for
more detailed information.
