User manual

AN-80i User Manual
70-00072-01-10 Proprietary Redline Communications © 2011 Page 13 of 152 March 2, 2011
1.1.2 Warning Symbols
The following symbols may be encountered during installation or troubleshooting. These
warning symbols mean danger. Bodily injury may result if you are not aware of the safety
hazards involved in working with electrical equipment and radio transmitters. Familiarize
yourself with standard safety practices before continuing.
Electro-Magnetic Radiation High Voltage
1.1.3 Lightning Protection
WARNING: The following notes are general recommendations for the system. The
wireless equipment should be installed by a qualified professional installer who is
knowledgeable of and follows local and national codes for electrical grounding and
safety. Failure to meet safety requirements and/or use of non-standard practices and
procedures could result in personal injury and damage to equipment.
All outdoor wireless equipment is susceptible to lightning damage from a direct hit or
induced current from a near strike. A direct lightning strike may cause serious damage
even if these guidelines are followed. Lightning protection and grounding practices in
local and national electrical codes serve to minimize equipment damage, service
outages, and serious injury. Reasons for lightning damage are summarized as:
a) Poorly grounded antenna sites that can conduct high lightning strike energy into
equipment.
b) Lack of properly installed lightning protection equipment can cause equipment
failures from lightning induced currents.
A lighting protection system provides a means by which the energy may enter earth
without passing through and damaging parts of a structure. A lightning protection system
does not prevent lightning from striking; it provides a means for preventing damage to
equipment by providing a low resistance path for the discharge of energy to travel safely
to ground. Improperly grounded connections are also a source of noise that can cause
sensitive equipment to malfunction.
A good grounding system disperses most of the surge energy from a lightning strike
away from the building and equipment. The remaining energy on the Ethernet cable
shield and conductors can be directed safely to ground by installing a lightning arrestor
in series with the cable.
If you have determined that it is appropriate to install lightning protection for your system,
the following general industry practices are provided as a guideline only:
1. The AC wall outlet ground for the indoor POE adapter should be connected to the
building grounding system.
2. Install a primary lightning arrestor (LP) device in series with the Ethernet cable at
the point of entry to the building. The grounding wire should be connected to the
same termination point used for the tower or mast.
3. Install a secondary lightning arrestor (LP) device in series with the Ethernet cable as
close to the outdoors unit as practical. The grounding wire should be connected to
the same termination point used for the tower or mast.
4. Provide direct grounding from the unit, the mounting bracket, the antenna, and the
Ethernet cable surge protection to the same ground bus on the building. Use the
grounding screws provided for terminating the ground wires.
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