Chapter 5: Installation
Install external antennas for a Connectorized ODU
Page 5-12
Install external antennas for a Connectorized ODU
To mount and connect an external antenna, proceed as follows:
1 Mount the antenna(s) according to manufacturer’s instructions. When using separate antennas to
achieve spatial diversity, mount one with Horizontal polarization and the other with Vertical
polarization.
2 Connect the ODU V and H interfaces to the antenna(s) with RF cable of type LMR-400 (Cambium
part numbers 30010194001 and 30010195001) and N type connectors (Cambium part number
09010091001). Tighten the N type connectors to a torque setting of 1.7 Nm (1.3 lb ft).
3 If the ODU is mounted indoors, install lightning arrestors at the building entry point:
4 Form drip loops near the lower ends of the antenna cables. These ensure that water is not
channeled towards the connectors.
5 If the ODU is mounted outdoors, weatherproof the N type connectors (when antenna alignment
is complete) using PVC tape and self-amalgamating rubber tape.
6 Weatherproof the antenna connectors in the same way (unless the antenna manufacturer
specifies a different method).
PSU
Network
equipment
PTP 670 ground cable
CAT5e cable
Site grounding system
Ground ring
RF cables to
antenna
AC supply
H
V
Lightning arrestors
Equipment building or
cabinet
RF cable
Connectorized
ODU