Ritron LPA-V150, Руководство пользователя

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2
Installation
Proper installation of the LPA-Series receiver is critical to the performance and
overall satisfaction with your system. With careful consideration and planning the
LPA-Series can receive a radio signal from up to a mile away and broadcast it over
your wired PA system. This section will help you plan an installation that is best
suited for your environment.
2.1
Radio coverage site survey
Ritron recommends that you do a “radio coverage site survey” before
permanently installing the LPA-Series receiver.
This will require 2 people and 2 charged portable radios.
Every building is different, and therefore, no “single” rule applies when it comes to where to install the LPA receiver
and antenna for optimal coverage. Ideally, you would like to install the LPA-Series receiver in close proximity to
the wired PA amplifier for easy installation. Begin your site survey by locating person #1 at the wired PA amplifier
to see if a simple installation is possible. If that is not possible, an alterative site must be found where:
1. AC power is available for the LPA receiver.
2. A shielded, twisted pair cable can be routed from the LPA receiver to the PA amplifier.
In general, the antenna of the LPA receiver is the “pivot” point for all communication. We’re trying to optimize the
location of the antenna in order to reduce the obstructions and distance the radio signal must travel in order to get
from any point in the desired coverage area to the antenna connected to the LPA receiver. By attempting to install
the ANTENNA for the LPA receiver “in the center” of the desired coverage area, we reduce the distance the radio
signal must travel by ½. If you’re attempting to cover a high rise building (e.g. 15 floors), go to a location half way
up (e.g. 7th floor), and in the center of the building.
Radio range can be extended with the use of an external
antenna.
The antenna can be installed at a higher elevation than is possible with the
attached antenna.
The Ritron RAM-1545 VHF/UHF magnet-mount antenna has a 25 ft.
cable to allow optimum antenna location.
Preparing for the radio coverage site survey:
1. Charge the radio batteries for at least 12 hours.
2. When charged, make sure both radios are set to the same channel.
Note: If you do not intend to route LPA communications through a repeater, the portable radios should be set to
a channel programmed for direct radio-to-radio communication, NOT through the repeater.
Section 2
Installation 5