User's Manual

Simulcast Hardware Installation Environmental Requirements
Environmental Requirements
One of the major considerations in designing a site is how to maintain an environment in which the
equipment can operate efficiently. A properly designed heating, ventilation, and air conditioning (HVAC)
system provides the proper environmental conditions for the communications equipment.
Each manufacturer specifies an operating or ambient temperature for their equipment.
These two terms for temperature are defined:
• Operating temperature refers to the temperature within the equipment case with
the equipment operating at a given capacity or load.
• Ambient temperature refers to the environmental temperature as typically measured
152 cm (5 ft.) above the floor in the center of an adjacent aisle.
For the specific environmental requirements for the equipment in a simulcast subsystem, see:
• Chapter 3,"Installing the Prime Site (10Base-2)."
• Chapter 4,"Installing the Prime Site (10Base-T)."
• Chapter 5,"Installing the Digital Simulcast Remote Site (10Base-2)."
• Chapter 6,"Installing the Digital Simulcast Remote Site (10Base-T)."
Expansion Considerations
Expansion cabinets or racks allow equipment to be added to a site. Each type of equipment has its
own specific cabinet or rack for installing additional devices. For example, install an expansion rack
to add STR 3000 Simulcast Base Radios to a site in the digital simulcast subsystem.
Each expansion cabinet or rack has its own requirements for installation. Detailed
information for expansions appear in "Installing the Expansion Cabinets" on page 5-10
and "Installing the Expansion Cabinets" on page 6-11.
Electrostatic Discharge
Electronic components, such as circuit boards and memory modules, can be extremely sensitive
to electrostatic discharge (ESD). Motorola recommends that an antistatic wrist strap and a
conductive foam pad be used when installing or upgrading the system.
If an ESD station is not available, wear an antistatic wrist strap. Wrap the strap around the wrist and
attach the ground end (usually a piece of copper foil or an alligator clip) to an electrical ground. An
electrical ground can be a piece of metal that literally runs into the ground (such as an unpainted
metal pipe) or the metal part of a grounded electrical appliance. An appliance is grounded if it
has a three-prong plug and is plugged into a three-prong grounded outlet.
68P81003Y71-O November 2002 2-13