Motech MT 4080 - Page 17

15
Accuracy applies when 1
<
⋅
DeQx
Example:
Test Condition:
Frequency : 1KHz
Level : 1Vrms
Speed : Slow
DUT : 1mH
Then
Ω=⋅⋅⋅=
⋅⋅⋅=
−
283.610102
2
33
π
π
LxfZx
Refer to the accuracy table, get
L
Ae
=±0.5%,
005.0
100
±=⋅±=
Ae
De
If measured Qx = 20
Then
1.01
2
1
2
m
m
±=
⋅
⋅
±=
DeQx
DeQx
Q
Ae
θ Accuracy:
100
Ae
π
180
e ⋅=θ