H3C WA4320X, Руководство по установке

Страница: 20 / 40

13
Do not install two directional antennas back to back. To install two directional antennas on the same
pole, make sure the distance between the antennas is larger than 4 m (13.12 ft).
To install a directional antenna on a pole:
1.
Weld the lightning rod to the top of the pole.
2.
Install the pole on a parapet or cement pier.
{
If there are parapets on the rooftop and the height of the parapets is no less than 1.2 m (3.94
ft), you can fix the pole on a parapet with expansion screws and fix the directional antenna
on the pole with the pole mounting bracket. See
Figure 13 .
Figure 13 Installing a directional antenna on a parapet (1)
{
If there are parapets on the rooftop and the height of the parapets is less than 1.2 m (3.94 ft),
you can fix the pole on a parapet at one point with expansion screws and fix the bottom end
of the pole to the rooftop surface, and then fix the directional antenna on the pole with the
pole mounting bracket. See
Figure 14.
Lightning rod
Directional outdoor
antenna
Pole
Parapet
Pole mounting bracket
0.5 m (1.64 ft)
1.2 m (3.94 ft)
Flat steel bar
To the grounding grid