Installation
68P81096E37-N
3
06/28/05
Equipment Ventilation
The high-power (100/75W) stations are equipped with cooling fans that
are used to provided forced convection cooling.
When planning the installation, observe the following ventilation guide-
lines:
Mounting the MTR2000
in a Cabinet
•
Customer-supplied cabinets must be equipped with ventilation slots
or openings in the front (for air entry) and back or side panels (for air
to exit). If several stations are installed in a single cabinet, be sure ven-
tilation openings surround each station to allow for adequate cooling.
•
All cabinets must have a least 15cm (6in) of open space between the
air vents and any wall or other cabinets. This allows adequate air flow.
•
When multiple cabinets (each equipped with several stations) are in-
stalled in an enclosed area, make sure the temperature within each
cabinet does not exceed the recommended / maximum operating tem-
perature of +60
°
C (+140
°
F). It may be necessary to have air condition-
ing or other climate control equipment installed to satisfy the
environmental requirements.
High Power Stations: The mounting of only ONE STATION PER CAB-
INET is recommended. More than one station per cabinet will result in
degradation of thermal specifications at high ambient temperatures.
Low Power Stations: In order to maintain thermal specification of –30
°
C
(–22
°
F) to +60
°
C (+140
°
F), the low power stations must be mounted in a
cabinet with additional cooling. A single low power station mounted in
a cabinet without additional cooling, will operate at thermal specifica-
tion performance of –30
°
C (–22
°
F) to +54
°
C (+129
°
F).
Appropriate precautions should be taken to ensure that station ambient
temperature does not 60
°
C (+140
°
F).
If multiple stations are required, AND THERMAL SPECIFICATION
DEGRADATION IS ACCEPTABLE, the following is recommended
when no cabinet fans are used. Up to three stations can be mounted in
a 76.2cm (30in
) or larger cabinet with two rack units of spacing between
each station. This will result in thermal specification performance of
–30
°
C (–22
°
F) to +40
°
C (+104
°
F).
Mounting the MTR2000
in a Rack
When mounting multiple stations in a rack, ensure that the minimum
spacing between stations is:
• 3 rack units (13.3cm or 5.25in) for VHF and UHF low power stations,
and 350MHz stations.
• 1 rack unit (4.4cm or 1.75in) for VHF and UHF high power stations,
800MHz stations, and 900MHz stations.
This spacing needs to be complied with to ensure that the thermal rating
of the station is not exceeded.
STOP
IMPORTANT
CAUTION
!
