4200-SMU and 4210-SMU overview

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.