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NF ZM2371 - Page 231

NF ZM2371
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8.7 Performance Testing
8-8 ZM2371/ZM2372
Described here is one example of test where easy-to-available standard is used.
The values in the following table are calculated based on the fact that calibration value of
standard is equal to the nominal value, and are rounded to 2-digit in significant digit.
Insufficient calibration accuracy of standard may allow the difference to get out of range of
the specification.
Measurement frequency 120Hz, Measurement signal level 1 Vrms, Cable length 0m
Measurement
range
Standard
(nominal
value)
Calibration value
of standard A
Measurement
value B
Difference
100×(B
-
A)/A
Specification
B-A
1M
1000pF
C F
C F
C %
C ± 0.19 %
D
D
D
D ± 0.0019
100k
0.01µF
C F
C F
C %
C ± 0.18 %
D
D
D
D ± 0.0018
10k
0.1µF
C F
C F
C %
C ± 0.18 %
D
D
D
D ± 0.0018
1k
1µF
C F
C F
C %
C ± 0.18 %
D
D
D
D ± 0.0018
100
100
Z
Z
Z %
Z ± 0.17 %
θ
°
θ
°
θ
°
θ
± 0.10 °
10
10
Z
Z
Z %
Z ± 0.19 %
θ
°
θ
°
θ
°
θ
± 0.11 °
1
1
Z
Z
Z %
Z ± 0.32 %
θ
°
θ
°
θ
°
θ
± 0.19 °
100m
100m
Z
Z
Z %
Z ± 0.43 %
θ
°
θ
°
θ
°
θ
± 0.25 °
Measurement frequency 1kHz, Measurement signal level 1 Vrms, Cable length 0m
Measurement
range
Standard
(nominal
value)
Calibration value
of standard A
Measurement
value B
Difference
(ditto)
Specification
1M
100pF
C F
C F
C %
C ± 0.18 %
D
D
D
D ± 0.0018
100k
1000pF
C F
C F
C %
C ± 0.11 %
D
D
D
D ± 0.0011
10k
0.01µF
C F
C F
C %
C ± 0.09 %
D
D
D
D ± 0.00086
1k
0.F
C F
C F
C %
C ± 0.09 %
D
D
D
D ± 0.00086
100
1µF
C F
C F
C %
C ± 0.09 %
D
D
D
D ± 0.00086
10
10
Z
Z
Z %
Z ± 0.13 %
θ
°
θ
°
θ
°
θ
± 0.075 °
1
1
Z
Z
Z %
Z ± 0.23 %
θ
°
θ
°
θ
°
θ
± 0.13 °
100m
100m
Z
Z
Z %
Z ± 0.39 %
θ
°
θ
°
θ
°
θ
± 0.22 °

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