Test Terminal Mode; Test Speed; Basic Accuracy - UNI-T UTR2810E Series User Manual

6.5 Test Terminal Mode

Four-terminal test：

Hcur：current excitation high end；

Hpot：voltage sampling high end；

Lpot：voltage sampling low end；

Lcur：current excitation low end.

6.6 Test Speed

Test frequency, integral time, component size, display mode, rang mode and comparsion all these will affect test
spee.
UTR2810E/2811E provides thress test modes FAST，MED and SLOW . In general, the slower the test speed, the
more stable and accurate the test results .

6.7 Basic Accuracy

Type
C
L
Z
R
D
Q
Notices：
1、D，Q is absoult error, other is relative erro Dx=1/Qx；
2、The subscript x is the measured value of this parameter, the subscript max is the
maximum value and min is the minimum value；
3、 ks is speed factor， kv is voltage factor， kf if frequency factor， ke is temperature factor(see
Table 6-7）；
4、In order to ensure the measurement accuracy, accuracy calibration should under the
current measurement condition, test tool to perform the stable open-circuit zero
clearing;
5、Guarantee of accuracy：1 year
Speed Time（S）
FAST 23.3
5.4
MED
2.8
SLOW
Table 6-3 Test Speed
Accuracy
0.1% (1+ Cx/Cmax+ Cmin/Cx )(1+Dx )( 1+ks+kv+kf )ke
0.1% (1+ Lx/Lmax+ Lmin/Lx )(1+1/Qx )( 1+ks+kv+kf )ke
0.1% (1+ Zx/Zmax+ Zmin/Zx )(1+ks+kv+kf )ke
0.1%(1+ Rx/Rmax+ Rmin/Rx )(1+Qx)(1+ks+kv+kf )ke
0.0010(1+ Zx/Zmax+ Zmin/Zx )(1+Dx+Dx2 )(1+ks+kv+kf )ke
0.0015(1+ Zx/Zmax+ Zmin/Zx )(Qx+1/Qx )(1+ks+kv+kf )ke
Table 6-4 Basic Accuracy
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UTR2810E Series LCR Meter – User Manual