Section 3: Source-measure hardware
Model 4200A-SCS Parameter Analyzer Reference Manual
3-2
4200A-901-01 Rev. C / February 2017
Source-measure hardware overview
The 4200A-SCS mainframe accepts up to eight SMUs, each of which may be used with or without
preamplifiers. Four of the SMUs may be high-power 4210-SMU models.
Figure 29: Source-measure hardware overview
Basic SMU circuit configuration
The basic SMU circuit configuration is shown in the next 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 local sensing example, the SMU FORCE terminal is connected to DUT HI,
while the DUT LO is connected to COMMON. See
Basic source-measure connections
(on page 2-1)
for more detailed information.
