JK2830 Operation Manual Chapter 5 Execute LCR operation and some examples
6.3.1
Acc
uracies of │Z│,│Y│, L,
C, R, X, G, B
The accuracy Ae of │Z│
,
│Y│
,
L
,
C
,
R
,
X
,
G and B are expressed as
:
A
e
= ±[A+
(
K
a
+K
b
+K
c
)
×100+ K
d
+K
f
]×K
e
[%]
A
:
basic test accuracy
(
figure A
)
K
a
:
impedance rate factor
(
table A
)
K
b
:
impedance rate factor
(
table A
)
K
c
:
calibrated inter-factor
(
table B
)
K
d
:
cable length factor
(
table D
)
K
e
:
temperature factor
(
table E
)
Kf
:
scan fixture modification factor
(
no add
:
Kf = 0, add
:
Kf = 0.2
)
L, C, X, B accuracy using condition
:
D
x
(
Test value
)
≤0.1
R, G accuracy using condition
:
Q
x
(
Q test value
)
≤0.1
WhenD
x
≥0.1, L, C,
X, B accuracy factor A
e
should be multiplied by
+
D
x
1
2
When Q
x
≥0.1, R, G accuracy factor A
e
should be multiplied by
+
Q
x
1
2
Accuracy of G can only be available in G-B combination
6.3.2
Accuracy of D
The accuracy of D is given by D
e
:
D
e
=
A
e
100
The formula is only available when D
x
≤0.1.
When D
x
>0.1
,
D
e
should be multiplied by
(
1+D
x
)
6.3.3
Accuracy of Q
The accuracy of Q is given by the formula below
:
Q
e
=
1
Q
D
Q
D
x
e
x
e
Where
,
Q
x
is the value of the tested Q.
D
e
is the accuracy of D
Above formula should be used when Q
x
×D
e
<1.
6.3.4
Accuracy of θ
The accuracy of
θ
is given by the formula below
:
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