UTR2810E Series LCR Meter
– User Manual
31
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 .
Table 6-3 Test Speed
6.7 Basic Accuracy
Table 6-4 Basic Accuracy
Speed
Time
（
S
）
FAST
23.3
MED
5.4
SLOW
2.8
Type
Accuracy
C
0.1% (1+ Cx/Cmax+ Cmin/Cx )(1+Dx )( 1+ks+kv+kf )ke
L
0.1% (1+ Lx/Lmax+ Lmin/Lx )(1+1/Qx )( 1+ks+kv+kf )ke
Z
0.1% (1+ Zx/Zmax+ Zmin/Zx )(1+ks+kv+kf )ke
R
0.1%(1+ Rx/Rmax+ Rmin/Rx )(1+Qx)(1+ks+kv+kf )ke
D
0.0010(1+ Zx/Zmax+ Zmin/Zx )(1+Dx+Dx2 )(1+ks+kv+kf )ke
Q
0.0015(1+ Zx/Zmax+ Zmin/Zx )(Qx+1/Qx )(1+ks+kv+kf )ke
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
