User Manual

MCR METER Manual
10
4.1 Range
In 100 ohm source resistance, using a total of 5 range: 31.6Ω，100Ω，1kΩ，10kΩ,100kΩ
In 30 ohm source resistance, using a total of 6 range : 10Ω，30Ω，100Ω，1 kΩ，10 kΩ,100 k
Ω
The effective measurement range of each range is shown in the
following table.
Table 4-1 The range in 100Ω source resistance
No. Range
Resistance
Effective
measurement
range
0 100 kΩ 100kΩ-100MΩ
1 10 kΩ 10kΩ-100kΩ
2 1 kΩ 1kΩ-10kΩ
3 100Ω 50Ω-1kΩ
4 30Ω 0Ω-50Ω
Table 4-2 The range in 30Ω source resistance
No. Range
Resistance
Effective
measurement
range
0 100 kΩ 100kΩ-100MΩ
1 10 kΩ 10kΩ-100kΩ
2 1 kΩ 1kΩ-10kΩ
3 100Ω 100Ω-1kΩ
4 30Ω 15Ω-100Ω
5 10Ω 0Ω-15Ω
4.2 Accuracy
The accuracy of │Z│，L，C，R，X
The accuracy of Ae about │Z│，L，C，R，X is expressed by the following formula:
A
e
= ±[A+（K
a
+K
b
+K
f
）×100+K
L
]×K
c
[%]
A： Basic measurement accuracy (See Figure 4-1)
K
a
：Impedance scaling factor (See table 4-4)，when using the impedance is less than 500
ohm .
K
b
：Impedance scaling factor (See table 4-4)，when using the impedance is greater than
500 ohm.
K
c
：Temperature factor (See table 4-5)
K
f
：Calibrated interpolation factor（See table 4-6）
K
L
：Cable length factor（See table 4-7）
 Be careful：According to the impedance size,it is only one valid about Kb and Ka, and
the other one is replaced by 0.
L, C, X accuracy conditions: D
x
（Measured value of D）≤0.1
R accuracy conditions: Q
x
（Measured value of Q ）≤0.1
When D
x
≥0.1，A
e
of L，C，X : A
e
= A
e
*
2
1
x
D
When Q
x
≥0.1，A
e
of R : A
e
= A
e
*
2
1
x
Q