Keysight E4980A User Manual page 198

Measurement Procedure and Examples
Measurement Contacts
Figure 7-9 Model of Capacitance to Ground
To minimize the stray capacitance of the test leads, the center conductor of
the test leads should be kept as short as possible, as shown in
If four-terminal pair connections are close to the point where contact is made
with the DUT, interconnect the shields of the measurement terminals to the
conductor to reduce the influence of the stray capacitance to ground, as
shown in
Figure 7-10 Reducing capacitance to ground
as short as
possible
Grounded Conductor
(A) Reducing capacitance to ground
198
Low
Cl cannot
be ignored
Cl
Grounded Conductor
Figure 7-10 (B).
C
High
Ch can
be ignored
Cx
Ch
Cx
Cl Ch
Grounded Conductor
(B) Reducing the influence of
the capacitance to ground
Keysight E4980A/AL Precision LCR Meter
Figure 7-10 (A).