Hioki IM3570 - Appendix; Appendix 1 Measurement Parameters and Arithmetic Expressions

Appendix
Appendix 1 Measurement Parameters and Arithmetic Expressions
A1
In general, impedance Z is used to evaluate the characteristics of, for example, circuit components.
Measure voltage and current vectors for circuit components relative to AC measurement frequency sig-
nals. The unit uses these values to obtain the impedance
Z and phase difference  . The following values
can be obtained from impedance
Z by rotating the impedance Z around the complex plane.
Furthermore, admittance
Y that is the reciprocal of impedance Z can also be used depending on the char-
acteristics of circuit components. As in the case
of impedance
Z, the following values can also be obtained from admittance Y by rotating the admittance Y
around the complex plane.
Appendix
Appendix 1 Measurement Parameters and
Arithmetic Expressions
I
Z
V
ZRjX+=

X
R
---tan
1–
=
ZR
2
X
2
+=
Imaginary part
Real part
jX
|Z|

R
Z
: Impedance ()
 : Phase angle (deg)
R : Resistance ()
X : Reactance ()
|Z| : Absolute value of impedance ()
Real part
|Y|
jB
G

YGjB+=
YG
2
B
2
+=
Y : Admittance (S)
 : Phase angel (deg) = - 
G : Conductance (S)
B : Susceptance (S)
|Y| : Absolute value of admittance (S)
Imaginary part

B
G
----tan
1–
=