Voltech AT360, User Manual

Page: 436 / 470

S
PECIFICATIONS
P
AGE
8-12 V
OLTECH
AT
I
U
SER
M
ANUAL
8.2.5 QL
AND
D T
ESTS
The accuracy of measuring Q factor and D factor is given as:
A
T
= A
R
+ A
I
+ A
QD
Where
A
T
is the basic total accuracy (%)
A
R
is the basic relative accuracy (%)
A
I
is the correction for current level (%)
A
QD
is the correction for Q or D factor (%)
The value of
A
R
is given in the table in section 8.1 of this chapter.
The values of the other factors are given below.
A
I
=
0.08% + (0.0001%/ Im
)
A
QD
= 0.2% x (
Q
M
+ (1/
Q
M
)) (Q factor)
A
QD
= 0.2% x (
D
M
+ (1/
D
M
)) (D factor)
Where
Q
M
is the Q factor of the measured impedance
D
M
is the D factor of the measurement impedance
I
M
is the measured current (A)