User manual

BASIC MEASUREMENT
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Quality factor (Q) and Dissipation factor (D)
Background
Both Quality factor and its reciprocal, Dissipation
factor, are used for measuring the rate of energy
dissipation relative to the measurement frequency.
• Low energy dissipation: high Q, low D
• High energy dissipation: low Q, high D
Type
Quality factor (Q) Dissipation factor (D)
Display Range
0.01 ~ 9999.9 0.00001 ~ 1000
Formula
SSS
S
RCR
L
Q
ϖ
ϖ
1
==
PP
P
P
RC
L
R
ϖ
ϖ
==
( )
D
1
90tan
1
=
−
=
°
θ
SS
S
S
RC
L
R
D ϖ
ϖ
==
PP
P
P
GL
C
G
ϖ
ϖ
==
( )
Q
1
90tan =−=
°
θ
LCR-8000G Series User Manual
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Angle (θ)
Background
The Angle (θ) measures the phase on which
Impedance (Z), Admittance (Y), Quality factor (Q),
and Dissipation factor (D) are measured.
Type
Angle (θ)
Display Range
–180° ~ +180°
Formula
jXRZ
S
+=
C
j
RLjR
ϖ
ϖ
−=+=
( )
D
Q
1
90tan
1
=
−
=
°
θ
θ cosZR
S
=
θ sinZX
S
=
jBGY
P
+=
L
j
GCjG
ϖ
ϖ
−=+=
( )
Q
D
1
90tan =−=
°
θ
θ cosYG
P
=
θ sinYB
P
=