Distance; Networking Information; Lightning Protection And Regulations; Electrical Requirements - Motorola PTP 300 Series User Manual

5.7 Distance

The PTP 300 Series Bridge will operate at ranges from 100 m (330 ft) to 250 km (155 miles).
Operation of the system will depend on obstacles in the path between the units. Operation at 40
km (25 miles) or above will require a near line-of-sight path. Operation at 100m (330 ft) could be
achieved with one unit totally obscured from the other unit, but with the penalty of transmitting at
higher power in a non-optimal direction, thereby increasing interference in the band. This subject
is covered in more detail in

5.8 Networking Information

The PTP 300 Series Bridge operates as a transparent Ethernet bridge. Although each unit requires
an IP address, this IP address is for management purposes only, and it plays no part in the
forwarding of bridged Ethernet frames. IP addresses are assigned during initial configuration as
described Section 7.2

5.9 Lightning Protection and regulations

CAUTION:The amount of lightning protection is dependent on regulatory requirements and the
end user requirements. The standard ODU for the PTP 300 Series Bridge is fitted with surge
limiting circuits and other features to minimize the risk of damage due to nearby lightning strikes.
These standard features may require some additional equipment to be configured as part of the
system installation to be fully effective. Motorola recommends the use of screened cable and
Lightning Protection units to protect connected equipment from nearby strikes.
NOTE: The PTP 300 Series Bridge is not designed to survive direct lightning strikes. For this
reason the unit should not be installed as the highest point in a localized area, unless specific
precautions are taken. See

5.10 Electrical Requirements

The PTP 300 Series Bridge requires one mains supply outlet at each end of the link to plug in the
PIDU Plus units
General Considerations
Channel Frequency
(MHz)
5735
5736
5737
5738
5739
5839
5840
Table 6 5.8 GHz Region Code 1 Edge Channel
Power Reduction
Section 6.1.3
"Installation Procedure".
Section 11 "Lightning Protection".
(Section 3.3.2 "PIDU Plus – PTP 300/500/600 Series Bridge").
Power Adjustment (dB)
-2 dB
-2 dB
-2 dB
-2 dB
-2 dB
-1 dB
-1 dB
"Path Loss Considerations".
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