Hangzhou Zhongchuang Electronics Co., Ltd.
20
Accuracy factor
This section contains all the accuracy correction factors: Impedance scaling factor Kz,
temperature factor Kc, calibration factor Kf, cable length factor Kl.
Frequen
cy/Hz
Kz
（
Zm<500Ω
）
Kz
（
Zm
≧
500Ω
）
Less
than
100
)
100
1
)(
200
1
)(
|
|
10
*
1
(
3
fm
Vs
Zm
)
100
1
)(
70
1
)(
10
*
1
(
|
Zm
|
9
fm
Vs
100
to 100k
)
200
1
)(
|
|
10
*
1
(
3
Vs
Zm
)
70
1
)(
10
*
5
(
|
Zm
|
9
Vs
Greater
than
100k
)
200
2
)(
|
|
10
*
1
(
3
Vs
Zm
)
70
1
)(
10
*
1
(
|
Zm
|
8
Vs
Note: fm in the table indicates the frequency of the test signal
（
unit
：
Hz
），
Zm is the
impedance (unit: Ω), Vs the test level (unit: mV)
Temperature factor Kc
)
20
(
*
25
.
0
c
T
K
(When Kc <1, Kc = 1)
T--room temperature
Calibration factor Kf
Range
Frequency /Hz
10 to 100
100 to 100k
10kΩ
0
0
1kΩ
、
100kΩ
0.02
0.01
100Ω
0.04
0.03
Cable length factor Kl
0 meter
1 meter
2 meters
4 meters
