Tonghui TH2523/A - Q Accuracy

TH2523 Series Operation Manual Ver1.2
37
FAST: (acquiring the basic accuracy at the temperature of 20 ºC±5 ºC; the temperature
coefficient plus ±0.05%/ ºC.)
Model:TH2523 /TH2523A
Display Digits: 4
Range
|Maximum
display value|
Resolution
Measurement
constant current
Accuracy for 6
months
Accuracy for one
year
30 mΩ
33.000 mΩ
10 μΩ
100mA (±10%)
±（0.5%Rdg +
0.01%Fs）
±（0.7%Rdg +
0.01%Fs）
300 mΩ
330.00 mΩ
100 μΩ
100mA (±10%)
±（0.3%Rdg +
0.01%Fs）
±（0.5%Rdg +
0.01%Fs）
3 Ω
3.3000 Ω
1m Ω
10mA (±10%)
30 Ω
33.000 Ω
10 mΩ
1mA (±10%)
300 Ω
330.00 Ω
100 mΩ
100μ A (±10%)
3 kΩ
3.5000 kΩ
1 Ω
10μ A (±10%)
L,C, X accuracy using condition：Dx (D test value)≤0.1
R accuracy using condition：Qx (Q test value)≤0.1
When Dx≥0.1, L, C, X Accuracy =│Z│ Accuracy *
2
1
x
D
When Qx≥0.1, R Accuracy =│Z│Accuracy *
2
1
x
Q
5.2.6 Q Accuracy
The accuracy of Q is given by the formula below：
Q
e
=
ex
ex
DQ
DQ



1
2
Where, Qx is the value of the tested Q.
D
e
is the accuracy of D
Above formula should be used when Qx×De<1
Which,
The accuracy of D is given by the formula below：
D
e
=
100
eA

The formula is only available when D
x
≤0.1.