User Manual

User Manual

supply 0.5A per port: it can feed only single and dual band TFAN remote

units, as well as the TFAM20 one.

2.4. Block diagrams

In order to better understand the functionalities of the different units and

modules, some block diagrams of the Britecell Plus system are reported

hereafter.

Systems based on Fast Master Unit must be directly connected to the BTS

station. The scheme of a typical Fast Britecell system is reported here in fig.

2.17.

Fig. 2.17: Block diagram for a Fast system

A more complex distribution system requires a rack-based Master Unit. It

allows the employment of a splitting/combining section (built by some passive

modules TLTN, TLDN, TLCN, and TBSI described above) in order to interface

one or more BTSs with several TFLN optical TRXs and with an higher number

of TFAx remote units.

Firstly, let’s assume that our BTSs are not duplexed. In this case, no TDPX

module (see fig. 2.7) is required. Moreover, let’s assume that the Master Unit

is made up of one or more subracks located in a single site, so that we do not

need an interconnect link in order to remotise a second subrack.

The scheme of this network configuration is reported hereafter in figure 2.18.

TFLF

Mixed fibre-copper cable

Fixed

Attenuator

TFAx