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ET4501/4502/4510 台式 LCR 数字电桥操作手册
杭州中创电子有限公司
21
Zero value adjustment : open circuit and short circuit zeroed before the test
Warm-up time:> 30 minutes
Calibration time: 12 months
C
:
0.20%*(1+ Cx/Cmax+ Cmin/Cx )(1+Dx)(1+ks+kv+kf)
;
L
:
0.20%*(1+ Lx/Lmax+ Lmin/Lx )(1+1/Qx)(1+ks+kv+kf)
;
Z
:
0.20%*(1+ Zx/Zmax+ Zmin/Zx )(1+ks+kv+kf)
;
R
:
0.20%*(1+ Rx/Rmax+ Rmin/Rx )(1+Qx)(1+ks+kv+kf)
;
D
:
0.20%*(1+ Zx/Zmax+ Zmin/Zx )(1+Dx+Dx*Dx)(1+ks+kv+kf )
;
Q
:
0.20%*(1+ Zx/Zmax+ Zmin/Zx )(Qx+1/Qx )(1+ks+kv+kf )
;
Wherein
1. L, C, R, Z are relative errors; D, Q, θ are absolute errors
2. Where the subscript is x, it is the measurement of this parameter; where the subscript is max, it
is the maximum value and where the subscript is min, it is the minimum value
3. Ks is the speed factor, kv is the voltage factor, kf is the frequency factor
The maximum and minimum values of the measurement parameters that affect accuracy
Frequency(Hz
100
120
200
400
800
1K
2K
4K
8K
10K
Cmax
800
667
400
200
100
80
40
20
10
8
Cmin
1500
1250 750
375
187
150
75
37.5
18.7
15
Lmax
1590
1325 795 397.5 198.8
159
79.5
39.8
19.9
15.9
Lmin
3.2
2.6
1.6
0.8
0.4
0.32
0.16
0..08
0.04
0.032
Z/Rmax
1
Z/Rmin
1.59
Frequency(Hz
15K
20K
40K
50K
80K
100K
Cmax
5.3
4
2
1.6
1
0.8
Cmin
10
7.5
3.75
3
1.87
1.5
Lmax
10.6
7.95
3.98
3.18
1.99
1.59
Lmin
0.021
0.016
0.008
0.0064
0.004
0.0032
Z/Rmax
1
Z/Rmin
1.59
Wherein: the unit of Cmax is uF; the unit of Cmin is pF; the unit of Lmax is H; the unit of Lmin is
mH; the unit of Zmax / Rmax is MΩ; the unit of Zmin / Rmin is in Ω;
Measurement speed error factor ks:
Measurement speed error factor kf:
Frequency
(
Hz
)
100~1K
2K~10K
15K
20K
40K 50K
80K
100K
kf
0
0.5
1
2
3
Measurement speed error factor kv:
level
(
mV
)
100
300
600
1000
1500
2000
kv
10
3
1
0
1
2
Speed mode
slow
medium
fast
ks
0
1
8
Summary of Contents for ET45 Series
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