Ellipse
INSTALLATION GUIDELINES
70-00159-01-09
Proprietary Redline Communications © 2015
Page 43 of 52
April 29, 2015
displacement by wind. The device should remain tethered until it is securely mounted to
minimize the risk to employees working below this level.
Important
: Do not use the Ethernet cable to hoist the sector controller. If the Ethernet
cable has been connected and weatherproofed, create the service loop and securely
attach cable to the mounting bracket to avoid any strain on the Ethernet port connection
during hoisting and installation.
Cable Supports
It is important to provide strain relief, drip loops and protection against vibration and
abrasion caused by the wind, sand etc. The installer must provide suitable cable
supports for the CAT-5 outdoor Ethernet cable, spaced at a recommended maximum of
450 mm (~18 in).
Cable Ties
If using plastic cable ties -- do not over-tighten.
4.3.5
Step 5: Align Antenna
Antenna alignment is essential to obtain maximum performance from a wireless link.
Antenna misalignment results in weaker receive signal strength and it may not be
possible to establish the wireless link.
The alignment must be performed in both the azimuth and elevation planes. Before
installing the equipment, obtain accurate antenna pointing azimuth and elevation angles
for each installation site. This will allow approximate alignment of antennas by using
GPS or magnetic compass. Refer to the site survey status.
Note: A metal tower will affect the accuracy of a magnetic compass. There is also a
difference between true North and Magnetic North (magnetic declination).
Azimuth Alignment
Use a magnetic or GPS compass to obtain the approximate azimuth direction. The
azimuth is aligned by loosening the bolts on the pipe bracket and rotating the antenna
around the pole.
Elevation Alignment
Most link budget plans will specify an elevation of zero degrees. The antenna can be set
to vertical using a bubble (spirit) level. This method is not accurate for elevation settings
of greater than 5 degrees. To adjust the elevation, loosen the appropriate bolts of the
mounting bracket.
