B&K Precision 886 - Manual - Manual (Page 18)

15
Accuracy applies when
1 < ⋅ De Qx
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%,
005 . 0
100
± = ⋅ ± =
Ae
De
If measured Qx = 20
Then
1 . 0 1
2
1
2


± =
⋅
⋅
± =
De Qx
De Qx
Q
Ae
θ Accuracy:
100
Ae
π
180
e
⋅ = θ