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Combined Standard Uncertainty u
There is no correlation associated with this measurement
Hence:
Table A-3 shows the combined standard uncertainty at all the power levels from 3uW
(-25dBm) to 100mW (20dBm).
Power
3.16uW
0.0097uW
10uW
0.009uW
31.6uW
0.0095uW
100uW
0.035uW
316uW
0.03uW
1mW
0.00007mW
3.16mW
0.00022mW
10mW
0.00069mW
31.6mW
0.0022mW
100mW
0.0092mW
Expanded Uncertainty ku
The Expanded Uncertainty for each power level is given in the table above, using
Agilent Technologies's standard 95% confidence level gives a coverage factor of 2.
Agilent E4416A/E4417A Service Guide
Measurement Uncertainty Analysis – Instrument Accuracy Test
2
y ( )
[
⋅
(
uc
=
C
u TSE
TSE
Table A-3: Combined Standard Uncertainty.
(MV)
U
(TSE)
U
(Converted)
0.00946uW
0.00946uW
0.00946uW
0.00946uW
0.042uW
0.000042mW
0.000389mW
0.000389mW
0.00095mW
0.00095mW
K = 2
Measurement Introduction
(y):
c
2
2
)
]
,
[
⋅
(
)
]
cMV u MV
uc(y)
0.0135uW
0.0131uW
0.0134uW
0.0363uW
0.0516uW
0.000082mW
0.000447mW
0.000792mW
0.00239mW
0.00924mW
(y):
c
k uc(y)
k=2
0.0271uW
0.0262uW
0.0268uW
0.0725uW
0.1032uW
0.00016mW
0.00089mW
0.00158mW
0.00479mW
0.01850mW
B-9
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