Radwin 2000+ SERIES, Руководство пользователя

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RADWIN 2000+ Series User Manual Release 4.2.40 4 ‐ 32
GPS Hub Site Synchronization with an Internal GSU
4.9.4 GPS Hub Site Synchronization with an Internal GSU
The RADWIN 2000i has an internal GPS unit that enables it to synchronize with other units
using a GPS signal. The only special connection required in this case is with a GPS antenna, at
the GPS antenna port of the unit:
Figure 4 ‐ 45: Connections: HSS via GPS using an internal GPS (for the RADWIN 2000i)
4.10 Lightning Protection
The use of lightning protection is dependent on regulatory and end user requirements. 2000+
radio units have surge limiting circuits that minimize the risk of damage due to lightning
strikes. RADWIN recommends the use of additional surge arrestor devices to protect the
equipment from nearby lightning strikes.
Lightning protection is carried out differently for RF cables vs. CAT ‐ 5e cables: RF cables are
connected to the ground point of the outdoor radio unit, whereas CAT ‐ 5e cables use an
additional LPU (lightning protection unit)
4.10.1 Lightning Protection for RF Cables
Connect the RF cables of the external antennas (if external antennas are used) to the
grounding point of the radio unit using a grounding kit such as the Andrew Type 223158 ‐ 2
( http://www.commscope.com ).
Ground the RF cables to the pole, attaching the grounding kit as close as possible to the
antenna (see figure 4 ‐ 46, Grounding an External Antenna ). RADWIN recommends that you
add an additional ground connection close to the outdoor radio unit.