GW Instek LCR-8000G Series - Manual (Page 22)

BASIC MEASUREMENT
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Reactance (X) and Susceptance (B = 1/X)
Background Reactance measures the imaginary part of
Impedance (Z) caused by capacitors or inductors.
Susceptance is the reciprocal of Reactance and
measures the imaginary part of Admittance (Y),
which is also the reciprocal of Impedance.
Type Series Reactance (X
S
)
Note: Reactance is
available only in series
circuit model.
Parallel Susceptance (B
P
)
Note: Susceptance is
available only in parallel
circuit model.
Display Range 0.01mΩ ~ 1GΩ 0.001ns ~ 1ks
Measurement
combination • X S + Q
• X
S
+ D
• X
S
+ R
S
• B P + Q
• B
P
+ D
• B
P
+ R
P
• B
P
+ G
P
Formula
θ sin
1
Z
B
X = =
( ) 2 2 X R Z
S
+ =
( ) 2 2 X R
RX
Z
P
+
=
θ sin Z X
S
=
θ sin
1
Y
X
B = =
( ) 2 2 B G
GB
Y
S
+
=
( )
2 2 B G Y
P
+ =
θ sin Y B
P
=
LCR-8000G Series User Manual
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Impedance (Z) and Admittance (Y = 1/Z)
Background Impedance measures the total amount of
opposition between two terminals in an AC circuit.
Admittance is the reciprocal of Impedance and
measures how easily the electricity flows in an AC
circuit.
Type Impedance (Z) Admittance (Y)
Display Range 0.01mΩ ~ 1GΩ 0.001ns ~ 1ks
Formula
Y I
E
Z
1
= =
jX R Z
S
+ =
C
j
R L j R
ϖ
ϖ − = + =
( ) 2 2 X R Z
S
+ =
( )
2 2 X R
RX
Z
P
+
=
θ cos Z R
S
=
θ sin Z X
S
=
Z E
I
Y
1
= =
jB G Y
P
+ =
L
j
G C j G
ϖ
ϖ − = + =
( ) 2 2 B G
GB
Y
S
+
=
( )
2 2 B G Y
P
+ =
θ cos Y G
P
=
θ sin Y B
P
=