Upper Power Limit And Resolution - Agilent Technologies 8163A User Manual

How to Measure Power
10 dBm
0 dBm
−10 dBm
−20 dBm
−30 dBm
−40 dBm
−50 dBm
−60 dBm
−70 dBm
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System, & Agilent 8166A Lightwave
Multichannel System, Fourth Edition
Figure 52 shows the possible range values you can choose. These values range
from 10 dBm (upper power limit of 13 dBm) to −70 dBm (upper power limit of
−67 dBm) in 10 dBm increments.
Figure 52 Range Value Menu

Upper Power Limit and Resolution

Table 1 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 1 Upper Power Limits and Resolution for Various Power Ranges
[R ] Upper Power Limit
ANGE
19.999 mW
1.9999 mW
199.99 µW
19.999 µW
1.9999 µW
199.99 nW
19.999 nW
1.9999 nW
199.99 pW
13.000 dBm 0.001 mW
0.1 µW
3.000 dBm
−7.000 dBm 0.01 µW
−17.000 dBm 0.001 µW
−27.000 dBm
0.1 nw
−37.000 dBm
0.01 nw
−47.000 dBm
0.001 nw
−57.000 dBm
0.1 pW
−67.000 dBm
0.01 pW
Power Measurement
Resolution
−30.000 dBm
−40.000 dBm
−50.000 dBm
−60.000 dBm
−70.000 dBm
−80.000 dBm
−90.000 dBm
−100.000 dBm
−110.000 dBm
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