C Measurement Uncertainty Analysis - Power Reference Level Test
C-144 E4416A/E4417A Power Meters Service Guide
Therefore,
Repeatability
To verify the overall repeatability of the measurement, the test was repeated
20 times, using the same DUT. For each test cycle, the Power Reference Level
Test and the Power Reference Level Adjust tests, were carried out; at no point
during these tests was the 1mW on the DUT adjusted. The thermistor was
disconnected and reconnected between each test with the sensor position
rotated each time. The results for this evaluation are shown in Table C- 1.
UR()
200 10 5 3++()×
1000000
---------------------------------------------
1000 0.5 0.5+()×
1000000
---------------------------------------------+=
Ta bl e C - 1 Measurement Repeatability Results
Measurement ADJUST REF. REF. LEVEL TEST
1 0.999548951 0.999499495
2 0.999541333 0.999554257
3 0.999449078 0.999414037
4 0.999546994 0.999509401
5
*
0.999138526 0.9991726
6 0.999647055 0.999454911
7 0.999539391 0.999515949
8 0.999567191 0.999558795
9 0.999600963 0.999554633
10 0.999405584 0.999377721
11 0.999523392 0.999566084
12 0.999504386 0.999504323
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