INSTALLATION
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3-2
COM-00-21-03 OCTOBER 2021
Version No.: A
3.1.1 Environmental Considerations
The Airlink Mercury hardware platform supports Airlink remote radio software. Currently, the
compact enclosure is designed for indoor operation only. For outdoor use it must be installed in
a ventilated NEMA 4/4X enclosure of adequate size and airflow to ensure an ambient
environment of -40º F to +158º F (-40ºC to 70° C). Humidity should not exceed 95% non-
condensing for more than 96 hours with the average humidity at 55%.
3.1.2 Equipment Ventilation
The Mercury radio should be mounted in an area that allows for adequate air flow. The radio
should be mounted to maximize air flow around the heat sinks. For maximum cooling, the radio
should be mounted vertically to promote airflow over the fins. Provide adequate airflow around
the radio enclosure, maintaining a minimum 2” clearance from the front, sides, and top surfaces.
3.1.3 Site Grounding
Motorola’s R56 site preparation practices provide the best source for grounding and lightning
preparation and should be consulted before equipment installation. It should be referred to for
grounding and lightning
mitigation during this installation. Grounding and lightning protection are important during
equipment installation as grounding issues and damage to equipment from lightning can cause
significant issues if not done properly. Grounding and lightning protection can be divided into the
following categories:
●
Electrical Ground
- Ground wires carrying current from equipment or circuitry at
the site ground. This includes AC or DC electrical power used to power
equipment at the site, backhaul connectivity, or alarm wiring.
●
Lightning Protection
- Lightning protection and mitigation are crucial for safe and
reliable communications. This includes radio equipment, backhaul, coaxial cables,
networking cables, AC/DC cabling, etc. This is not only for equipment that is directly
onsite, but equipment where there’s an electrical path from elsewhere to the site.
●
Surge Protection
– It is critical to protect the equipment from electrical surges
that can occur from the power supply or source.
3.1.4 Input Power Requirements
The Mercury radio will accept 12 to 24 VDC (12 to 13.3 VDC nominal) power input. The DC
source must be capable of supplying 2 amps and should be on a dedicated circuit protected
with a fuse or circuit breaker rated at 5 amps. Ensure wire of appropriate size is used.
