Keysight Technologies B1500A - Page 73

Module 2
Basic Measurement
2-45
Shown above are typical capacitance and series resistance of the force line. If cables are too long,
high capacitance may cause the SMU to oscillate. Keep the force-guard cable capacitance less than
600 pF. Similarly, the guard-shield capacitance must be less than 5000 pF.
Note the rather high force resistance. Kelvin connections must be used to eliminate this cable error.