Measuremet Uncertainty Analysis - Instrument Accuracy Test D
Keysight E4416A/E4417A Power Meters Service Guide 169
Therefore to attain a power of 100 mW as shown in the Table D-2, instead of
applying 14.4493 Volts, the actual amount of voltage required from the Universal
Source would be:
14.4493 × 1.075533 = 15.6 Volts
By using the DMM Uncertainties calculated previously the worst case voltage and
corresponding power errors can be calculated.
Power Setting (mW) Applied Volts DMM Error on Range
Standard Uncertainty
(μV)
Worst Case Voltage
Error on Range (%)
Worst Case Power
Error on Range
0.001 0.14493 mV
<1.371 μV
0.946%
0.00946 μW
0.01 1.4493 mV
<1.371 μV
0.0946%
0.00946 μW
0.1 14.493 mV
1.371 μV
0.00946%
0.00946 μW
1 144.93 mV
6.09 μV
0.00420%
0.042 μW
10 1.4588 V
56.8 μV
0.00389%
0.389 μW
100 15.6 V
148.8 μV
0.00095%
0.95 μW
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