GW Instek LCR-8101 (Replaced by LCR-8101G) - Manual (Page 44)

LCR-8000G Series User Manual
44
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

    
 
2 2 X R Z
S
 
 
2 2 X R
RX
Z
P



cos Z R
S


sin Z X
S

Z E
I
Y
1
 
jB G Y
P
 
L
j
G C j G

    
 
2 2 B G
GB
Y
S


 
2 2 B G Y
P
 

cos Y G
P


sin Y B
P
