Vivint SR1410, Installation And User Manual, Page: 32 / 38

SR1410 Installation and User Guide Page 32
SR1410 Installation & User Guide Ver. 0.01
Due to the typically inaccessible location often best suited to deploying an outdoor wireless router (for
example, on rooftops, sides of buildings, or on a radio tower) it is recommended that the network
administrator pre-provision the SR1410 system to be installed (taking note of settings, passwords,
Channel, MAC and IP addresses) prior to physical installation, and confirm that the device is fully
operational and free from fault.
2.1.1 Testing Basic Link Operation
Set up the units over a very short range (15 to 25 feet), either outdoors or indoors. Connect the units as
indicated in this chapter and be sure to perform all the basic configuration tasks outlined in
“System
Setup.”
When you are satisfied that the links are operating correctly, proceed to mount the units in their
intended locations.
2.2 Connect External Antennas
When deploying a SR1410 Master router unit for a router link or an access point operation, you need to
mount external antennas and connect them to the router. Typically, a router link requires a 5 GHz
antenna, and an access point or station operation.
Perform these steps:
1.
Mount the external antenna to the same supporting structure as the router, within 3 m (10 ft) distance,
using the bracket supplied in the antenna package.
2.
Connect the antenna to the router’s N-type connector using the RF coaxial adapter provided in the
antenna package.
3.
Apply weatherproofing tape to the antenna connectors to help prevent water entering the connectors.
2.2.1 Frequency, Wavelength and Velocity
Instead of saying “cycles per second”, we use the word Hertz (abbreviated Hz) in honor of Heinrich
Hertz who discovered radio waves. Also, since we are dealing with high frequencies, we use prefixes
like kilo (1,000), Mega (1,000,000) and Giga (1,000,000,000) in front of Hertz, to further simplify the
terminology.
5 cycles per second = 5 Hz
5,000 cycles per second = 5 kHz
5,000,000 cycles per second = 5 MHz
5,000,000,000 cycles per second = 5 GHz
We know that radio waves travel at the speed of light (~186,000 miles per sec. or 3 x 108 meters per
sec.) and we can measure the frequency of the radio waves, therefore we can find out how far the wave
travels in 1 cycle by dividing its’ speed by its’ frequency. We call this a wavelength
Frequency Wavelength
150 MHz 2.0 m
900 MHz 33.3cm