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Chapter 1 Pre-Installation Considerations
Chapter 1 Pre-Installation Considerations
Proper installation ensures the best possible performance and reliability of the VXD-R70 Repeater.
Pre-installation planning is required. This includes considering the mounting location of the repeater
in relation to input power and antennas. Also consider the site environmental conditions, the par-
ticular mounting method (several available), and required tools and equipment.
If this is the first time this type of equipment is being installed, it is highly recommended that the
user read this entire installation section before beginning the actual installation.
1.1
Installation Overview
The following information is an overview for installing the VXD-R70 Repeater and ancillary equipment.
•
Plan the installation, paying particular attention to environmental conditions at the site, ventila-
tion requirements, and grounding and lightning protection.
•
Unpack and inspect the equipment.
•
Mechanical install the equipment at the site.
•
Make necessary electrical and cabling connections, including the following:
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AC input cabling
-
Coaxial cables to transmit and receive antennas
•
Perform a post-installation function checkout test of the equipment to verify proper installation.
•
Proceed to customize the repeater parameters per customer specifications (e.g. operating fre-
quency, PL, codes, color code, etc.).
1.2
Environmental Conditions at Intended Installation Site
The repeater may be installed in any location suitable for electronic communications equipment,
provided that the environmental conditions do not exceed the equipment specifications for tempera-
ture, humidity, and air quality.
NOTE: The VXD-R70 Repeater has been manufactured with a power-saving main fan. The fan
powers ON temporarily as a self-check after user initially turns the repeater power ON. If
the repeater's internal ambient temperature remains below 30°C (86°F), the fan does not
operate. It powers ON and remains operational only after the repeater's internal ambient
temperature rises above 30°C (86°F), and its speed increases as the temperatures rises.
At 50°C (122°F), the fan runs at full speed.
1.2.1
Operating Temperature Range
-30°C (-22°F) to +60°C (+140°F)
This is the temperature measured in close proximity to the repeater. For example, if the repeater is
mounted in a cabinet, the temperature within the cabinet is measured.
1.2.2
Humidity
Humidity conditions should not exceed 95% relative humidity @ 50°C (122°F).
1.2.3
Air Quality
For equipment operating in an area which is environmentally controlled and with the repeater(s)
rack mounted, the airborne particle level must not exceed 25 μg/m³.
For equipment operating in an area which is not environmentally controlled and with the repeater(s)
cabinet mounted, airborne particle level must not exceed 90 μg/m³.
Page 8
If the repeater is to be installed in an environment which is usually dusty,
dirty, or does not meet the air quality requirements, then the air used to cool
the repeater modules must be treated using appropriate filtering devices.
Dust or dirt accumulating on the internal circuit boards and modules is not
easily removed, and can cause such malfunctions as overheating and inter-
mittent electrical connections.
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