Voltech AT3600 - Page 385

VOLTECH AT3600 USER MANUAL SPECIFICATION
SPECIFICATION VPN 98 - 024 PAGE 8.1.27.
LSBX AND LPBX TESTS
The accuracy for measuring inductance with bias is given as:
The accuracy is based on the test conditions chosen to measure the impedance of the
parameter under test, and is given as:
where
A
T
is the total accuracy (%)
A
R
is the basic relative accuracy (%)
A
C
is the calibration accuracy (%)
A
V
is the correction for voltage level (%)
A
I
is the correction for current level (%)
A
Q
is the correction for Q factor (%)
The value of A
R
is given in the table in section 1.1. of this chapter.
The values of the other factors are given below.
where
F
M
is the measurement frequency (Hz)
V
M
is the measured voltage (V)
I
M
is the measured current (A)
Q
M
is the Q factor of the measured impedance
I
B
is the bias current (A)
A =
C
0.08% + ( 0.00001% ) x
F
M
A =
V
0.08% + (0.001% / V
M
)
A =
I
0.08% + (0.0001% / x ( III
M B M
) + (0.03% / ))
A =
Q
0.08% + (2% / Q
M
)
A = A
T
R
CVIQ
+A +A +A +A