AiRocks Pro ARX-900 User Manual - page 22
22
AIROCKS PRO ARX-900 USER GUIDE V1.0
4E
QUIPMENT
I
NSTALLATION AND
O
PERATION
4.1I
NSTALLING THE
ARX-900
M
ASTER AND
R
ELAY
U
NITS
To install and operate the ARX-900 you must be an experienced audio professional with a knowledge
of applicable RF spectrum regulations. The FCC deems that it is the responsibility of the operator to
know, understand, and abide by the rules.
The ARX-900 is designed to be installed by professional audio engineers, technicians, and network
operators who have an in-depth understanding of wireless radio technology and who are knowledgeable
in local regulations including building and wiring codes, safety, channel, power, outdoor/indoor
restrictions, and license requirements. It is important to follow the installation and configuration
instructions in this document in order to comply with the rules and restrictions imposed by the FCC and
other government bodies who regulate the airwaves. The ARX-900 has passed certain FCC mandated
testing using the equipment listed in this document, including the antennas. Use of other antennas or
amplifying devices not listed in this document may violate these FCC regulations.
The ARX-900 is designed to be mounted in a vertical orientation for optimum results and to comply
with FCC certification requirements.
The ARX-900 should be mounted as high as possible above any obstructions to achieve optimum
performance. Direct line-of-sight to other ARX-900 units is important, but not necessary. Distances of
more than 1000 feet can easily be achieved with a properly installed unit. The unit includes a pole
mount which gives the user a variety of installation options.
The recommended mounting location of the ARX-900 is on a pole, such as a speaker stand, that allows it
to be mounted 10 feet or more off the ground. Obstructions, such as people, trees, building, or other
solid structures, can affect the quality of the radio transmission, and hence the achievable range of the
unit for reliable, error-free operation. However, since the ARX-900 operates in the unlicensed 900 MHz
band, direct line of sight is not required. The unit can be used in both indoor and outdoor environments.
Interference in the 900 MHz band will also affect network performance. The range of each link is
dependent upon, not only the transmit path, but also the level of interference in the area. The ARX-900
system is designed to avoid interference and co-operate in the presence other 900 MHz systems.
Additionally, the Network Management System provides the user with several tools to detect and avoid
interfering signals.
4.1.1
Installing the Master Unit
Install the Master unit as high as possible, and with best possible line of sight to the first Relay unit.
Typically, a Breakout Box (ARX-900-BOB or “BOB”) will be used to allow the Master to be mounted at a
significant distance from the network operator position and main audio source. The BOB provides an
input for the Master audio source, as well as AC or DC power inputs, and a USB interface for the
Network Management System.