B&K Precision 886 - Manual - Manual (Page 15)

12
L Accuracy:
Lx f Zx
⋅ ⋅ ⋅ = 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 . 6 10 10 2
2
3 3
π
π
Lx f Zx
Refer to the accuracy table, get L
Ae
=±0.5%
ESR Accuracy:
100
Ae
Xx ESR
Ae
⋅ ± =
Cx f
Lx f Xx
⋅ ⋅ ⋅
= ⋅ ⋅ ⋅ =
π
π
2
1
2