East Tester ET4501 User Manual page 24

ET4501/4502/4510 台式 LCR 数字电桥操作手册
 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
Cmax 800
Cmin 1500
Lmax 1590
Lmin 3.2
Z/Rmax
Z/Rmin
Frequency(Hz 15K
Cmax 5.3
Cmin 10
Lmax 10.6
Lmin 0.021
Z/Rmax
Z/Rmin
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:
Speed mode slow
ks 0
Measurement speed error factor kf:
Frequency （Hz） 100~1K
kf 0
Measurement speed error factor kv:
level （ mV） 100
kv 10
杭州中创电子有限公司
120 200 400
667 400 200
1250 750 375
1325 795 397.5
2.6 1.6 0.8
20K 40K
4 2
7.5 3.75
7.95 3.98
0.016 0.008
medium
1
2K~10K 15K
0.5
300 600 1000
3 1 0
800 1K 2K
100 80 40
187 150 75
198.8 159 79.5
0.4 0.32 0.16
1
1.59
50K
1.6
3
3.18
0.0064
1
1.59
fast
8
20K 40K 50K
1 2
1500 2000
1 2
4K 8K 10K
20 10 8
37.5 18.7 15
39.8 19.9 15.9
0..08 0.04 0.032
80K 100K
1 0.8
1.87 1.5
1.99 1.59
0.004 0.0032
80K 100K
3
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