Keysight Technologies E4417A Service Manual page 156

D Measuremet Uncertainty Analysis - Instrument Accuracy Test
Worst case error on 0.1 V range:
Error = ((9 ppm × 100 mV) + (3 ppm × 100 mV)) + (6 ppm × 100 mV) + 5((0.15 ppm
× 100 mV) + 100 mV))
= 2.375 μV
Percentage Error = 0.002375%
Vol tage Error
μ
2.375 V
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%
Vol tage Error
μ
10.55 V
166
Distribution
Rectangular
Distribution
Rectangular
Keysight E4416A/E4417A Power Meters Service Guide
Standard Uncertainty
μ
1.371 V
Standard Uncertainty
μ
6.09 V