Adjustments
Power Reference Oscillator Level Adjustment
HP EPM-441A/442A Service Guide 3-11
Measurement Uncertainty
When calculating measurement uncertainty the significant multimeter
uncertainty parameters are for V
comp
, V
1
-V
0
and R. Other uncertainties
which should be included are:
• Maths Assumptions: ±0.01%
• Effective Efficiency Calibration: ±0.05%
• Mismatch Uncertainty with Source and Mount: ±0.1%
•SWR: ≤1.05
These values are typical.
4402serv.book Page 11 Monday, March 11, 2002 11:34 AM
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