User's Manual Part 1

2.3. Block diagrams
To better understand the functions of the different units and modules, two block diagrams of the
Britecell Plus system are reported here.
The first diagram (Fig. 4) refers to the case of duplexed BTSs, ie. BTS conveying both the downlink
and uplink signals on a single RF port. In this case, a THYN module is required to combine the
uplink and downlink paths on a single RF port. The second diagram (Fig. 5) refers to the case of not-
duplexed BTSs, ie BTSs conveying the uplink and the downlink connections on separate RF ports.
Table 2.1 shows an overview of Britecell Plus equipment, including all the modules and the units
stated above.
For more information about the single units and/or the single modules, please refer to the following
sections.
Fig. 4: Block diagram for a triple band system with 8 TFLN fully populated of TFAxxx, and
duplexed base stations.
TLCN2
TLTN
TBSI
TBSI
TBSI
THYN
91
THYN
20
THYN
18
GSM
900
BTS
GSM
1800
BTS
UMTS
BTS
DL - UL
splitting /
combining
Level
adjustment
Services
combining /
splitting
Triple-band system – duplexed BTSs – 8 TFLN
Fixed
At
ten
Fixed
Atten
Fixed
Atten
TLCN4
TFLN
TFAx
TFAx
TFAx
TFLN
TFAx
TFAx
TFAx
TFAx
TFLN
TFAx
TFAx
TFAx
TFAx
TFLN
TFAx
TFAx
TFAx
TFAx
TFAx
TFLN
TFAx
TFAx
TFAx
TFLN
TFAx
TFAx
TFAx
TFLN
TFLN
TFAx
TFAx
TFAx
TFAx
TFAx
TFAx
TFAx
TFAx
TFAx
TFAx
TLCN4
Signal splitting /
combining
3 km max
optical link
Electrical / optical
conversion
Optical/electrical
conversion
1
5
MN024-04