Mpt-Hc - Alcatel-Lucent 9500 MPR User Manual

2.8.5 MPT-HC

MPT-HC (Microwave Packet Transport) is a Microwave Equipment capable to transport the Ethernet traf-
fic over an RF radio channel.
The MPT-HC includes a waveguide antenna port, type-N female connector for the DC connection, a main-
tenance connector (with captive protection cap) for RSSI access, 1 electrical GE interface, 2 GE optical
interfaces (1 for data, 1 for for RPS) and a grounding stud.
The MPT-HC can be installed on an integrated antenna or on standard poles, wall or pedestal mount, with
an appropriate fastening system.
The MPT-HC (one or two depending on the configuration 1+0 or 1+1, each one with a solar shield) incor-
porates the complete RF transceiver and can be associated with an integrated or separate antenna.
The cabinet is a very compact and robust weatherproof (IP 67) container, designed to be compatible with
hot and very sunny climatic zones.
The MPT-HC can be rapidly installed on standard poles with an appropriate fastening system. The pole
mounting is the same for 1+0 or 1+1 configurations from 6 to 38 GHz.
The MPT-HC is fixed by means of quick latches. This system allows to change the MPT-HC without alter-
ing antenna pointing.
For 6 GHz & 7/8 GHz, the MPT-HC polarization is determined by the rotation of the MPT-HC in 1+0 con-
figuration and by the position of a polarization rotator fitted within the coupler in 1+1 configuration.
For 11 GHz to 38 GHz, the MPT-HC polarization is determined by the rotation of the nose fitted in the
antenna port of the MPT-HC in 1+0 configuration and by the position of a polarization rotator fitted within
the coupler in 1+1 configuration.
Where two MPT-HC have to be connected to a single antenna for hot-standby or frequency diversity con-
figurations, a direct-mounting coupler is used. They are available for equal or unequal loss operation.
Equal loss is nominally 3 dB. Unequal is nominally 1/10 dB.
Three mechanical solutions are adopted:
[1] with embedded diplexer for cost optimisation (11 GHz to 38 GHz), where the branching (diplexer)
is internal to the MPT-HC cabinet; this type of MPT-HC is identified by one Logistical Item only;
[2] with embedded diplexer for cost optimisation and different mechanics from 11-38 GHz (6 GHz),
where the branching (diplexer) is internal to the MPT-HC cabinet; this type of MPT-HC is identified
by one Logistical Item only;
[3] with external diplexer: due to a very high number of shifters the diplexer is external for the flexibility
of the shifter customization (7 GHz and 8 GHz), where MPT-HC is composed by two independent
units: the BRANCHING assembly (containing the diplexer) and the RF TRANSCEIVER assembly
(containing the RF section); each of this type of MPT-HC is identified by two Logistical Items, one
for the BRANCHING assembly and another for the RF TRANSCEIVER assembly. To read the
BRANCHING assembly identification label it is necessary to separate the BRANCHING assembly
from the RF TRANSCEIVER assembly.
9500 MPR Rel. 3.1
142/980 3DB18809AAAA Issue 1
User Manual
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