68P80801E30-A 5/1/2002
4-19
Gen 3 Site Controller System Manual
Chapter 4 Installation
Intercabling Connections
■
In sectored sites with multiple RF Cabinets serving a single sector, do not
drive all cabinets within a single sector from the same output.
The following examples illustrate possible RF Cabinet 5 MHz/1 PPS
intercabling that balances the BR load and provides site reference output
redundancy within a sector.
Example 1 —
Assume a 24-BR, three-sector site consisting of the
following arrangement:
■
12 BRs in Sector 1
■
8 BRs in Sector 2
■
4 BRs in Sector 3
The table below shows a proper distribution of the site reference outputs to
the RF Cabinets (RFCs).
Note that in the above example, each output drives 8 BRs, while utilizing all
three outputs within sector 1.
Example 2 —
Assume a 16-BR, two-sector site with the following
arrangement:
■
8 BRs in Sector 1
■
8 BRs in Sector 2
The table below shows a proper distribution of the site reference outputs to
the RFCs.
Note that in the above example, each output drives eight BRs, while utilizing
two different outputs within a given sector.
Site Ref
Output
Sector 1
(12 BRs)
Sector 2
(8 BRs)
Sector 3
(4 BRs)
1
RFC 1 (4 BRs)
RFC 4 (4 BRs)
2
RFC 2 (4 BRs)
RFC 6 (4 BRs)
3
RFC 3 (4 BRs)
RFC 5 (4 BRs)
Site Ref
Output
Sector 1
(8 BRs)
Sector 2
(8 BRs)
1
RFC 1 (4 BRs)
RFC 3 (4 BRs)
2
RFC 2 (4 BRs)
RFC 4 (4 BRs)