B&K Precision 889B - Manual - Manual (Page 11)

10
ESR Accuracy:
100
Ae
Xx
Ae
ESR
⋅ ± =
Cx f
Lx f Xx
⋅ ⋅ ⋅
= ⋅ ⋅ ⋅ =
π
π
2
1
2
ESR
Ae
= Ae of ESR
f : Test Frequency (Hz)
Xx : Measured Reactance Value (
Ω)
Lx : Measured Inductance Value (H)
Cx : Measured Capacitance Value (F)
Accuracy applies when Dx (measured D value)
≤ 0.1
Example:
Test Condition:
Frequency : 1KHz
Level : 1Vrms
DUT : 100nF
Then
Ω =
−
⋅ ⋅ ⋅ ⋅
=
⋅ ⋅ ⋅
=
1590
9
10 100
3
10 2
1
2
1
π
π
Cx f
Zx
Refer to the accuracy table, get
C
Ae
=±0.1%,
Ω ± = ⋅ ± =
59 . 1
100
Ae
Xx
Ae
ESR
D Accuracy:
100
Ae
Ae
D
± =
D
Ae
= Ae of D measurement value
Accuracy applies when Dx (measured D value)
≤ 0.1
When Dx > 0.1, multiply Dx by (1+Dx)
Example:
Test Condition:
Frequency : 1KHz
Level : 1Vrms
DUT : 100nF
Then
Ω =
−
⋅ ⋅ ⋅ ⋅
=
⋅ ⋅ ⋅
=
1590
9
10 100
3
10 2
1
2
1
π
π
Cx f
Zx
Refer to the accuracy table, get
C
Ae
=±0.1%,
002 . 0
100
± = ⋅ ± =
Ae
Ae
D