Specifications; Measurement Range; Accuracy - UNI-T LCR-1000 series Operation Manual

3. SPECIFICATIONS

3-1. Measurement Range

With 100Ω source resistance, there are five ranges: 31.6Ω, 100Ω, 1kΩ, 10kΩ, 100kΩ.
With 30Ω source resistance, there are six ranges: 10Ω, 30Ω, 100Ω, 1kΩ, 10kΩ, 100kΩ.
The effective measurement range is listed as below.
Table 3-1 Effective measurement range
with 100Ω source resistance
No. Resistance
0 100kΩ
1 10kΩ
2 1kΩ
3 100Ω
4 30Ω

3-2. Accuracy

3-2-1. Accuracy of │Z│, L, C，R, X
The accuracy (A ) of │Z│，L，C，R，X is shown as below:
e
A = ±[A+(K +K +K )×100+K
e a b f
A： Basic measurement accuracy (Refer to Fig.3-1)
：Impedance scaling factor (Refer to table 3-4), impedance <500Ω
K
a
：Impedance scaling factor (Refer to table 3-4), impedance >500Ω
K
b
：Temperature factor (Refer to table 3-5)
K
c
：Calibration interpolation factor (Refer to table 4-6)
K
f
：Cable length factor (Refer to table 4-7)
K
L
Note: Choose only Ka or Kb, depending on resistance value. For others, input zero.
Condition for L, C, X accuracy: D
Condition fo R accuracy: Q
When D ≥0.1, for L, C and X, its accuracy factor A
x
When Q ≥0.1, for R, its accuracy factor A
x
Effective mea.range
100kΩ-100MΩ
10kΩ-100kΩ
1kΩ-10kΩ
50Ω-1kΩ
0Ω-50Ω
]×K [%]
L c
(D measured value)≤0.1
x
(Q measured value)≤0.1
x
shall be multiplied by
e
Table 3-2 Effective measurement range
No. Resistance
0
1
2
3
4
5
shall be multiplied by
e

2
1 Q
x
with 30Ω source resistance
Effective mea.range
100 kΩ 100kΩ-100MΩ
10 kΩ 10kΩ-100kΩ
1 kΩ 1kΩ-10kΩ
100Ω 100Ω-1kΩ
30Ω 15Ω-100Ω
10Ω 0Ω-15Ω

2
1 D
x