How to Measure Power Power Measurement
Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition 93
Figure 51 shows an example of the range values you can choose for the
Agilent 81634B. Inn this case the values range from 10 dBm (upper
power limit of 13 dBm) to −70 dBm (upper power limit of
−67 dBm) in 10 dBm increments.
Upper Power Limit and Resolution
Table 7 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.
Figure 51 Range Value Menu
Table 7 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
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