Parallel/Series Circuit Mode - Keysight E4980A User Manual

Measurement Procedure and Examples

Parallel/Series Circuit Mode

Parallel/Series Circuit Mode
To measure L, C, or R, there are two equivalent circuit modes: the parallel and
series modes as shown in
setting the FUNC (Cp, Cs, Lp, or Ls) on the MEAS SETUP page. To determine
which mode is better, consider the relative impedance magnitude of the
reactance and Rs and Rp.
Table 7-1 Parallel/Series Circuit Mode
Circuit Mode
Cp mode
Cs mode
Lp mode
Ls mode
190
Table 7-1. The E4980A/AL can select the mode by
Measurement Function
Cp-D
Cp-Q
Cp-G
Cp-Rp
Cs-D
Cs-Q
Cs-Rs
Lp-D
Lp-Q
Lp-G
Lp-Rp
Ls-D
Ls-Q
Ls-Rs
Keysight E4980A/AL Precision LCR Meter
Definition of D, Q, and
G
1 1
D
--------------------- - -- -
= =
2fCpRp Q
1
G
----- -
=
Rp
1
D 2fCsRs
-- -
= =
Q
Rp 1
Q
-------------- -- -
= =
2fLp D
1
G
----- -
=
Rp
2fLs 1
Q
------------- - -- -
= =
Rs D