Avoiding Hazards
19
Rearranging terms to solve for distance yields
d
=
r
P.G
4
πS
(2)
2.1.1.1
Calculated Distances and Power Compliance Margins
shows calculated minimum separation distances d, recommended distances and resulting
power compliance margins for each frequency band and antenna combination.
Band
Antenna
Max
Average
Transmit
Power in
Burst (Watt)
Variable
D
(m)
Recom-
mended
Distance (m)
Power
Compliance
Margin
P
(Watt)
G
S
(
W/m
2
)
5.4
GHz
Integrated
0.005
(7dBm)
0.00250
200
(23dBi)
10
0.06
1
15.9
External
3ft Dish
0.00035
(-4.6dBm)
0.00017
2884
(34.6dBi)
10
0.06
5.8
GHz
Integrated
0.32
(25dBm)
0.16
200
(23dBi)
10
0.5
2
4.0
External
2ft Flat
Plate
0.32
(25dBm)
0.16
631
(28dBi)
10
0.9
4
4.5
External
6ft Dish
0.32
(25dBm)
0.16
6310
(38dbi)
10
2.83
10
3.5
Table 3
Power Compliance Margins
Notes:
1. The regulations require that the power used for the calculations is the maximum power in the
transmit burst subject to allowance for source-based time-averaging.
2. At 5.4GHz the product is generally to a fixed EIRP which can be achieved with the Integrated
Antenna. If there are no EIRP limits, use the distance calculations for 5.8GHz.
3. At 5.8GHz, for antennas between 0.6m (2ft) and 1.8m (6ft), alter the distance proportionally
to the antenna gain
Содержание MOTOWI 4
Страница 1: ...PTP 500 Series User Guide phn 1115 000v001 ...
Страница 74: ...Web Page Reference 74 Figure 37 Save Configuration File Screen ...
Страница 100: ...Web Page Reference 100 Figure 59 Spectrum Management as seen from the Master ...
Страница 108: ...Web Page Reference 108 Figure 66 Spectrum Management Master Screen With Operational Restrictions ...
Страница 112: ...Web Page Reference 112 Figure 68 Remote Management ...
Страница 165: ...Data Rate Calculations 165 Figure 112 QPSK 0 50 Single Payload Figure 113 QPSK 0 75 Single Payload ...
Страница 166: ...Data Rate Calculations 166 Figure 114 16 QAM 0 50 Single Payload Figure 115 16 QAM 0 75 Single Payload ...
Страница 167: ...Data Rate Calculations 167 Figure 116 64 QAM 0 67 Single Payload Figure 117 64 QAM 0 83 Single Payload ...
Страница 168: ...Data Rate Calculations 168 Figure 118 256 QAM 0 75 Single Payload Figure 119 QPSK 0 50 Dual Payload ...
Страница 169: ...Data Rate Calculations 169 Figure 120 QPSK 0 75 Dual Payload Figure 121 16 QAM 0 50 Dual Payload ...
Страница 170: ...Data Rate Calculations 170 Figure 122 16 QAM 0 75 Dual Payload Figure 123 64 QAM 0 67 Dual Payload ...
Страница 171: ...Data Rate Calculations 171 Figure 124 64 QAM 0 83 Dual Payload Figure 125 256 QAM 0 75 Dual Payload ...
Страница 197: ...Glossary 197 UTP Unshielded Twisted Pair VLAN Virtual Local Area Network ...
