Vislink DXL5000 RX, Руководство пользователя и техническое руководство

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Installing the DXL5000 2-3 DXL5000 User and Technical Manual
Calculation steps:
1. [P] RF power input. Watts to milliwatts = Watts * 1000
2. [G] Antenna gain dBi. Numeric gain = Antilog (dBi/10)
3. [EIRP] Multiply P * G
4. [R] Centimeters to feet = Centimeters * .0328
5. Square R
6. Multiply R² * 4
π
7. [S] Divide (R² * 4
π
) into EIRP
S = Power Density in milliwatts per square centimeters.
Note At frequencies above 1500 MHz, S must not be greater than 1.
Reference
FCC OET Bulletin 65, August 1997 - Evaluating Compliance with FCC Guidelines for
Human Exposure to Radio Frequency Electromagnetic Fields
The following graphs and associated tables show the permissible exposure distance for various
antennas. Graphs and data will vary, based on the actual transmitter, output power, frequency,
and antenna utilized. One plot provides the permissible output of the transmitter for digital
modulation, and the other plot for analog modulation.
This information is provided, in accordance with the requirements set forth by the FCC, as a
guide for you assuming that users of this equipment are licensed and qualified to operate the
equipment per the guidelines and recommendations contained within the product user guides
and in accordance with any FCC rules that may apply.
Low Power
Antenna
Gain
(dBi)
Minimum Safe
Distance from
Antenna (cm)
Minimum Safe
Distance from
Antenna (inch)
0 9 3.54
29 252 99.19
36 563 221.60
40 893 351.48
43 1261 496.33
Maximum Permissible Exposure
All Bands, Standard Power 1 Watt (+30dBm)
0
10
20
30
40
50
60
70
80
0 2 4 6 8 10121416182022242628303234363840424446485052545658
Distance in Feet
Po
w
e
r D
e
n
s
it
y
(mW
/c
m^
2)
0dBi
29dBi
36dBi
40dBi
43dBi