Motech MT 4080 - Page 14

12
L Accuracy:
LxfZx ⋅⋅⋅= π 2
L
Ae
= Ae of |Zx|
f : Test Frequency (Hz)
Lx : Measured Inductance Value (H)
|Zx| : Measured Impedance Value (
Ω )
Accuracy applies when Dx (measured D value)
≦ 0.1
When Dx > 0.1, multiply L
Ae
by
2
1 Dx+
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%
ESR Accuracy:
100
Ae
XxESR
Ae
⋅±=
Cxf
LxfXx
⋅⋅⋅
=⋅⋅⋅=
π
π
2
1
2