How to Measure Power Power Measurement
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Sixth Edition 99
Upper Power Limit and Resolution
Table 9 shows the upper power limit and measurent resolution at various
power ranges. As can be seen the resolution decreases as the chosen
[Range] decreases. The resolution is always 40 dBm less than the chosen
[Range] value. The Upper Power Limit is always 3 dBm greater than the
chosen [Range] value.
Table 9 Upper Power Limits and Resolution for Various Power Ranges
[RANGE] Upper Power Limit Resolution
40 dBm 19.999 W 43.000 dBm 0.001 W −0.000 dBm
30 dBm 1.9999 W 33.000 dBm 0.1 mW −10.000 dBm
20 dBm 199.99 mW 23.000 dBm 0.01 mW −20.000 dBm
10 dBm 19.999 mW 13.000 dBm 0.001 mW −30.000 dBm
0 dBm 1.9999 mW 3.000 dBm 0.1 µW −40.000 dBm
−10 dBm 199.99 µW −7.000 dBm 0.01 µW −50.000 dBm
−20 dBm 19.999 µW −17.000 dBm 0.001 µW −60.000 dBm
−30 dBm 1.9999 µW −27.000 dBm 0.1 nw −70.000 dBm
−40 dBm 199.99 nW −37.000 dBm 0.01 nw −80.000 dBm
−50 dBm 19.999 nW −47.000 dBm 0.001 nw −90.000 dBm
−60 dBm 1.9999 nW −57.000 dBm 0.1 pW −100.000 dBm
−70 dBm 199.99 pW −67.000 dBm 0.01 pW −110.000 dBm
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