WNI Global Challenger L Series, Руководство пользователя и инструкция по установке

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2-35 This manual is provided by WNI Global and its confidentiality is preserved. Without the pre-written consent from WNI Global,
anyone may not disclose, extract, cite or publish any part or all parts of this manual. Version No.: V2.0
2.6.2.1.1 Surge Protection
For installations at more environmentally stressed locations, auxiliary surge suppression
provisions may optionally be installed at additional points along the IF cable to assist in
protecting the IDU and ODU. An example of such an auxiliary surge suppressor is the
PolyPhaser Broadband DC Pass Protector, part number 098-1013G-A; however other types
may be used depending on local codes and standards.
2.6.3
Routing the ODU/IDU Interconnect Cable
1. Select where the cable will enter the building from outside.
2. Determine the length of cable required. Allow three extra feet on each end to allow for strain
relief, as well as any bends and turns.
3. Route the cable.
The Challenger L IDU is equipped with TNC female connector on the front of the chassis.
Depending on the ODU type, it will be equipped with either a N-type or TNC female connector at
its interconnecting port. A length of coaxial cable (such as Times Microwave Systems LMR-400,
LMR-300 or LMR-200) fitted with the appropriate N-type or TNC male connectors is required to
connect the ODU to the Challenger L IDU. This cable assembly may be supplied in fixed lengths
with the digital radio. Bulk coaxial cable of equivalent specification may also be used, with
terminating connectors applied during cable installation.
Based on an evaluation of the cable routing path, pull the ODU/IDU Interconnect cable from one
unit to the other, utilizing cable trays, ducts, or conduit as required. Take care that the ODU/ IDU
Interconnect cable is not kinked or damaged in any way during installation. Be sure to protect the
TNC connectors from stress, damage and contamination during installation (do not pull the cable
by the connectors). If multiple ODU/ Challenger L IDU Interconnect cables are to be installed
along the same route, the cables should all be pulled at one time. Be sure the installed cable
does not have any bends that exceed the specified cable bend radius. The ODU/ Challenger L
IDU Interconnect cable should be adequately supported on horizontal runs and should be
restrained by hangers or ties on vertical runs to reduce stress on the cable. Outside the building,
support and restrain the cable as required by routing and environmental conditions (wind, ice).
The Challenger L ODU/IDU and interconnection must be properly grounded in order to protect it
and the structure it is installed on from lightning damage. This requires that the ODU, any
mounting pole or mast and any exposed interconnect cable be grounded on the outside of the
structure. The Challenger L IDU must be grounded to a rack or structure ground that also has
direct path to earth ground.
The ODU must be directly connected to a ground rod or equivalent earth ground. The ODU/ IDU
interconnect cable should also be grounded at the ODU, where the cable enters the structure and
at intermediate points if the exposed cable run is long (typically at intervals of 100 ft), with the
cable manufacturer’s grounding kits. Lightning protection devices used with the interconnect
cable must be appropriate for the transmission of the interconnect signals (DC to 350 MHz).