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long term component reliability, ambient temperatures must not be exceeded.
Operational specification compliance is not guaranteed for temperatures outside this
range.
Mechanical Loading: When installing the GigaPlus ODU and antenna/remote mount on
a tower mount or building, ensure the mount is securely anchored first and can support
the full load of the radio unit and antenna. Ensure that the additional loading of an
GigaPlus ODU will not cause any reduction in the mechanical stability of the mount.
Power Supply Connection: The GigaPlus IDU has the positive pin on its dc power supply
connector connected directly to the chassis, which is in turn connected directly to the
earth ground through the tower leg. The GigaPlus system must be used with a -48 Vdc
power supply which has a positive earth; the power supply earth conductor is the
positive supply to the IDU.
1) There must be no switching or disconnecting devices in this earth conductor
between the dc power supply and the point of connection to a GigaPlus system.
2) The power supply must be located in the same premises as the GigaPlus system.
3) All wiring which is carrying power to the GigaPlus IDU from the power supply
must be larger than 18 AWG and should be twisted to reduce noise into the IDU.
Power Supply Disconnect: An appropriate power supply disconnect device should be
provided as part of the building installation.
Rack Mount Temperature Considerations: If the GigaPlus IDU is installed in a closed or
multi-unit rack assembly, the operating ambient temperature of the rack environment
may be greater than room ambient. The maximum ambient temperature of +55°Celsius
applies to the immediate operating environment surrounding the IDU, which if installed
in a rack, is the ambient within the rack.
Restricted Access: The GigaPlus system must be installed in restricted access sites. The
PoE unit and associated power supply must be installed in restricted areas, such as
dedicated equipment rooms, closets, cabinets, or the like. Access to the tower and
ODU/antenna location must be restricted.
Note:
For USA: In restricted access areas install the GigaPlus system in accordance with articles 110-26
and 110-27 of the 2002 National Electrical Code ANSI/NFPA 70.
Trango Systems, Inc.
GigaPlus User Manual Rev 3.1
68
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