Keithley 3321 Operator's Manual page 61

Lcz meter
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Notes Cont.:
acc2: Accuracy shown in one range above the range including a Z in
Table A-l.
act = [accl (22 - Z) + acc2 (Z -
Zl)l / (22 - Zl)
Z: Magnitude
of measured impedance (measured value)
Zl: Lower limit value of each impedance range in Table A-l.
22: Upper limit value of each impedance range in Table A-l.
act: Measuring accuracy of impedance Z ( I Z I is displayed by %, and 0
by degree.)
accl: Measuring
accuracy of impedance Zl
acc2: Measuring
accuracy of impedance of 22
When obtaining the accuracy in the ambient temperature
ranging from
5"-4O"C, add each corresponding
value in Table A-4 to accl and acc2 in
advance.
l
When level = 50mV rms, accuracy is not guaranteed
in the following
ranges.
IZI
>20Ma
I Z I 2 2Mn and frequency = 1OOkHz
IZI <0.2a
Accuracy of
ESR and G
In the case of Q < 0.1 (D > lo), use the accuracy of I Z I :
IESRI
= IZI
IGI
=l/lZl
Accuracy of L and C
In the case of Q > 10 (D < 0.11, use the accuracy of
I Z I :
IZI
L=-
2nf
1
CC------
2xf
IZI
where f is the test frequency in Hz.
Refer to Figure A-l, Conversion
from LC to
I Z I.
Accuracy of D and Q
In case Dc<l (Q>>l), use the following equations:
Accuracy of D = rt(O.0175 x 0 accuracy (deg))
Accuracy of Q = f(0.0175
x
8 accuracy (deg) x Q2)
In any parameter,
add the *l/2
count, i.e., half of the resolution
to the
displayed value as actual accuracy.

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