EUCOL U2836 - Accuracy of D; Accuracy of Q; Accuracy of Θ

U2836 Operation Manual Chapter 5 Execute LCR operation and some examples
46
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
（Tes t 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
2
1
x
D+
When Q
x
≥0.1, R, G accuracy factor A
e
should be multiplied by
2
1
x
Q+
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
=
100
eA
±
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
=
ex
ex
DQ
DQ
×
×
±
m1
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：
θe =
100
180 eA
×
π
[deg]