80
Power Measurement
How to Measure Power
Upper Power Limit and Resolution
Table 3-1 shows the upper power limit and measurent resolution at
various power ranges. As can be seen the resolution decreases as
the chosen [R
ANGE
] decreases. Resolution is always 40 dBm less
than the chosen [R
ANGE
] value. The Upper Power Limit is always
3 dBm greater than the chosen [Range] value.
How to Set the Averaging Time
This is the length of time over which a signal is averaged. Longer
averaging times increase the accuracy and improve the noise
rejection. Longer averaging times also decrease sensitivity.
For averaging times of 1 second or less, a new measurement is
shown at the end of each averaging time. This is drawn in
Figure 3-1. A new measurement is shown on the display at each x.
[R
ANGE
]
Upper Power Limit
Resolution
10 dBm
19.999 mW
13.000 dBm
0.001 mW
−
30.000 dBm
0 dBm
1.9999 mW
3.000 dBm
0.1
µ
W
−
40.000 dBm
−
10 dBm
199.99
µ
W
−
7.000 dBm
0.01
µ
W
−
50.000 dBm
−
20 dBm
19.999
µ
W
−
17.000 dBm
0.001
µ
W
−
60.000 dBm
−
30 dBm
1.9999
µ
W
−
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
Table 3-1
Upper Power Limits and Resolution for Various Power Ranges
Содержание 8163A Series
Страница 1: ...HP 8163A Lightwave Multimeter HP 8164A Lightwave Measurement System User s Guide ...
Страница 3: ...HP 8163A Lightwave Multimeter HP 8164A Lightwave Measurement System User s Guide ...
Страница 13: ...13 Safety Summary ...
Страница 25: ...1 1 Getting Started ...
Страница 40: ...40 Getting Started A Description of the User Interface Figure 1 13 The HP 8163A System Configuration Menu ...
Страница 49: ...2 2 Additional Features ...
Страница 61: ...3 3 Power Measurement ...
Страница 76: ...76 Power Measurement How to Measure Power Figure 3 8 Manual Range Mode Within Range ...
Страница 87: ...4 4 Laser Sources ...
Страница 94: ...94 Using Laser Source Modules How to Use Laser Source Modules ...
Страница 95: ...5 5 Tunable Lasers ...
Страница 99: ...99 Tunable Laser Sources How to Set the Power Figure 5 1 Setting High Power parameters ...
Страница 103: ...103 Tunable Laser Sources How to Set the Power Figure 5 3 Setting Attenuation ...
Страница 113: ...113 Tunable Laser Sources How to Perform a Wavelength Sweep Figure 5 10 Executing a Stepped Sweep ...
Страница 130: ...130 Tunable Laser Sources How to Use Auxiliary Functions ...
Страница 131: ...A A Installation and Maintenance ...
Страница 159: ...B B Accessories ...
Страница 167: ...C C Specifications ...
Страница 175: ...D D Performance Tests ...
Страница 188: ...188 Performance Tests Test Record ...
Страница 192: ...192 Performance Tests Test Record ...
Страница 193: ...E E Cleaning Procedures ...
Страница 199: ...F F Firmware Updates ...
Страница 204: ...204 F Firmware Updates Firmware Update Process ...