Cambium Networks PMP 450 Series, Руководство по установке

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Chapter 3: System planning 142
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Up to 200 mph (Connectorized) for PMP/PTP 450i – all models 3 GHz and 5 GHz
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Up to 200 mph (322 kph) for PMP/PTP 450 – all models
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Up to 200 mph (322 kph) for PMP 450 – Ruggedized
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Up to 200 mph (322 kph) for PMP 450i – all models 900 MHz
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Up to 118 mph (191 kph) for PMP 450b Mid-Gain
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Up to 90 mph (145 kph) for PMP 450b High Gain
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Up to 90 mph (145 kph) for PMP 450d
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Up to 100 mph (161 kph) for 900 MHz antennas
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Up to 124 mph (200 kph) for PMP 450 MicroPoP Series - AP 5 GHz
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Up to 124 mph (200 kph) for PMP/PTP 450b Retro Series - 5 GHz
Wind blowing on the ODU will subject the mounting structure to significant lateral force. The magnitude of
the force depends on both wind strength and surface area of the ODU. Wind loading is estimated using the
following formulae:
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Force (in kilograms) = 0.1045aV
2
where:
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“a” is the surface area in square meters, and “V” is the wind speed in meters per second.
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Force (in pounds) = 0.0042Av
2
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where:
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“A” is the surface area in square feet, and
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“v” is the wind speed in miles per hour.
Applying these formulae to the 450 platform at different wind speeds, the resulting wind loadings are
shown in below tables.
Table 98 :PMP 450m Series wind loading (Newton)
Type of ODU Max surface area (square feet) Wind speed (kilometer per hour)
160 170 180 190 200
Integrated 90º sector antenna 0.331 671 757 849 946 1048
Table 99 :PMP/PTP 450i Series wind loading (Newton)
Type of ODU Max surface area (square
meters) Wind speed (kilometer per
hour)
160 170 180 190 200
Connectorized 0.035 94 106 119 132 146
Directional Yagi antenna - 900 MHz 0.025 67 76 85 94 105
External 65º sector antenna – 900
MHz 0.253 677 764 857 954 1058
Directional antenna – 3.x GHz 0.1 142 160 180 200 222
Integrated 90º sector antenna - 3.x 0.18 83 94 105 117 130