Agilent Technologies E4416A Service Manual page 176

Worst case error on 1V range
Error = ((8 ppm × 1.0 V) + (0.3 ppm × 1.0 V)) + (1 ppm × 1.0 V) + 5((0.15 ppm
× 1.0 V) + (0.1 ppm × 1.0 V))
= 10.55 μV
Percentage Error = 0.001055%
Voltage Error
μ
10.55
Worst case error on 10 V range
Error = ((8 ppm × 10.0 V) + (0.05 ppm × 10.0 V)) + (1 ppm × 10.0V) + 5((0.15
ppm × 10.0 V) + (0.01 ppm × 10.0 V))
= 98.5 μV
Percentage Error = 0.000985%
Voltage Error
μ
98.5 V
E4416A/E4417A Power Meters Service Guide
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Measurement Uncertainty Analysis - Instrument Accuracy Test
Distribution
V Rectangular
Distribution
Rectangular
Standard Uncertainty
μ
6.09 V
Standard Uncertainty
μ
56.8 V
D
D-155