Performance Tests
Instrument Accuracy Test
HP EPM-441A/442A Service Guide 2-9
Table 2-3: Instrument Accuracy Results
Note The nominal outputs for the 3 µW, 3 0 µW, 3 0 0 µW, 3 mW, 1 0 m W,
30 mW and, 100 mW settings are 3.16
µW, 31.6 µW, 316 µW,
3.156 mW, 10.03 mW, 31.78 mW, and 101.3 mW respectively.
Note It is not necessary to check instrument accuracy in dBm. The
power meter uses the same internal circuitry to measure power
and mathematically converts watts to dBm.
Range
Calibrator
Setting
Min
1
1. These performance limits are determined by the zero set specification of the power sensor
used in the measurement plus the measurement noise.
Channel A
Actual Results
Channel B
Actual Results
(HP EPM-442A
only)
Max
1
3 µW3.100 µW _______________ _______________ 3.230 µW
10 µW9.900 µW _______________ _______________ 10.10 µW
30 µW31.40 µW _______________ _______________ 31.80 µW
100 µW99.50 µW _______________ _______________ 100.5 µW
300 µW0.314 µW _______________ _______________ 0.318 µW
1 mW 0.995 mW _______________ _______________ 1.005 mW
3 mW 3.141 mW _______________ _______________ 3.171 mW
10 mW 9.984 mW _______________ _______________ 10.08 mW
30 mW 31.63 mW _______________ _______________ 31.94 mW
100 mW 100.9 mW _______________ _______________ 101.8 mW
4402serv.book Page 9 Monday, March 11, 2002 11:34 AM
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