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4.10 Appendix J: Accuracy of Measurement
Contribution
System Repeatability
(assessment from 20 repeat
observation)
Random
(assessment from 20
random observation)
Receiver Specification
Antenna Factor Calibration
Cable Loss Calibration
Combined Standard
Uncertainty Uc (y)
Total Uncertainty @95%
min. confidence probability
(U)
Measurement Uncertainty Calculations:
Uc (y) = square root ( u
U = 2 * Uc (y)
Note: The measurement Uncertainties mentioned above also refer to NIS 81-1994 of NAMAS : The
treatment of Uncertainty in EMC Measurement.
International Standards Laboratory
(NVLAP Lab. Code: 200234-0)
Contribution
Normal (K=2)
Normal (K=2)
Rectangular
Normal (K=2)
Rectangular
Normal
Normal (K=2)
2
2
(y)
+ u
(y)
+ ..........+u
1
2
Declaration of Conformity
-24-
Uncertainties
Radiation
3 m
10 m
±0.56
±0.5
±1.28
±1.14
±1
±1
±2
±2
±0.5
±0.5
±1.38
±1.34
±2.76
±2.68
2
(y)
)
n
Report Number: ISL-99135FB
Conduction
Phase
Neutral
±0.20
±0.20
±0.54
±0.58
±1
±1
NA
NA
±0.5
±0.5
±0.70
±0.71
±1.40
±1.42
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