User's Manual

5. Using standard work and safety practices for tower climbing, connect the assembled unit
(assembled antenna, brackets, and radio) to a pole, mounting fixture, or the tower. Mount
ans mounting the unit so as to avoid accidental touching by personnel. Typically this me
the unit at least 4 m (13 ft) above ground level.
TheAPhasmetal‐to‐metalcontactfromthetowerorsupportstructure,throughtheantenna,
throughthecoaxcable,totheradio.InstallingsurgesuppressionattheAPisstrongly
recommendedtoprovidethebestprotectionfromnearbylightningstrikes.
Uptofour600SSsurgesuppressorsmaybemountedinseriesonanEthernetlinkwithout
degradingthelink.Theequivalentofa600SSisbuiltintoeachofthe8portsonaCMM4and
countsasoneofthefour.

Asanexample,atypicalin stallationmighthaveproperly‐grounded600SSunitswithin3ft(1m)
ofeachAPandadditionalproperly‐grounded600SSunitsoneachEthernetcablemounted
outsideatthepointofcableentrytoatelecommunicationshutthatcontainstheCMM4.
Procedure 2: Cabling and Grounding/Earthing the AP
Standard installation practices apply, including
o use shielded Ethernet cable for all infrastructure cabling
o use drip loops
o provide extra cable (a splice loop) for future use at any termination
o ensure the tower or structure is fully grounded (Protective Earth – PE)
1. Use dielectric grease (which is uniformly non-conducting) on all connections and in all
RJ-45 Ethernet connectors. The best practice is to use enough grease to fill the RJ-45
female connector, and then insert the RJ-45 male connector and push the grease
further into the unit and around the RJ-45 connector. Excess grease can be wiped over
the connector area to provide some resistance to water ingress around the connector.
Run a 10 AWG ground strap from the ground lug on the AP (see Error! Reference source not
found.) to known good ground (Protective Earth - PE).
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