Vivint SR1410, Installation And User Manual, Page: 12 / 38

SR1410 Installation and User Guide Page 12
SR1410 Installation & User Guide Ver. 0.01
1.2.1 Antenna Position and Polarization
Once the required antenna height has been determined, other factors affecting the precise position of the
wireless router must be considered:

Be sure there are no other radio antennas within 2 m (6 ft) of the wireless router. These include other
WiFi radio antennas

Place the wireless router away from power and telephone lines

Avoid placing the wireless router too close to any metallic reflective surfaces, such as roof-installed
air-conditioning equipment, tinted windows, wire fences, or water pipes. Ensure that there is at least 5
feet clearance from such objects

The wireless router antennas at both ends of the link must be positioned with the same polarization
direction, either horizontal or vertical. Proper alignment helps to maximize throughput.
The wireless router’s integrated antenna sends a radio signal that is polarized in a particular direction.
The antenna’s receive sensitivity is also higher for radio signals that have the same polarization. To
maximize the performance of the wireless link, both antennas must be set to the same polarization
direction.
1.2.2 Radio Interference
The avoidance of radio interference is an important part of wireless link planning. Interference is caused
by other radio transmissions using the same or an adjacent channel frequency. You should first scan your
proposed site using a spectrum analyzer to determine if there are any strong radio signals using the
802.11a,n channel frequencies. Always use a channel frequency that is furthest away from another
signal.
If radio interference is still a problem with your wireless link, changing the antenna polarization
direction may improve the situation.
1.2.3 Weather Conditions
When planning wireless links, you must take into account any extreme weather conditions that are
known to affect your location. Consider these factors:

Temperature
— The wireless router is tested for normal operation in temperatures from -33°C to
55°C. Operating in temperatures outside of this range may cause the unit to fail.

Wind Velocity — The wireless router can operate in winds up to 90 miles per hour and survive
higher wind speeds up to 125 miles per hour. You must consider the known maximum wind velocity
and direction at the site and be sure that any supporting structure, such as a pole, mast, or tower, is
built to withstand this force.

Lightning — The wireless router includes its own built-in lightning protection via chassis grounding.
However, you should make sure that the unit, any supporting structure, and cables are all properly
grounded. Additional protection using lightning rods, lightning arrestors, or surge suppressors may
also be employed.

Rain — The SR1410 is weatherproofed against rain. Also, prolonged heavy rain has no significant
effect on the radio signal. However, it is recommended to use weatherproof boots on cables
connecting to the SR1410 or to apply weatherproof sealing tape around connectors for extra