Protek 9216A - Page 42

11
Figure 2-2 Basic Impedance Accuracy for Inductances
Table 2-4 Extreme Range Error Terms for Inductances, K
h
and K
l
Frequency
K
l
K
h
100 Hz, 120 Hz
(1 H/L
m
)
(L
m
/2.6 MH)
1 kHz
(0.1 H/L
m
)
(L
m
/260 kH)
10 kHz
(0.02 H/L
m
)
(L
m
/10 kH)
100 kHz
(0.02 H/L
m
)
(L
m
/100 H)
The accuracy of the capacitance measurement is calculated from equation (1) above,
with the additional stipulation that if the measured D has a value less than 0.1, then the
basic capacitance accuracy factor should be multiplied by the factor (1 + D). Let the
basic capacitance accuracy factor be denoted A
c
. Then the accuracy of the D calculation
is given by
Accuracy of D [A
c
/100] (3)
Note that the accuracy of D is specified as a magnitude, not as a percentage.