BVRD Network
Installation Instructions
4
BVRDNET issue 3
2.2 BVRDCIF (C
OPPER
) N
ETWORK
2.2.1 Cable Requirements
The BVRDCIF module enables connection to a copper network.
The copper network is a pair of Tx and a pair of Rx conductors
(minimum 4 core screened cable required). The maximum length
of cable between units is dependant on the speed selected and the
cable type in use.
Enhanced Fire Rated Four Core Cable should be used, with a
cross
sectional area
of either >1mm
2
(untwisted) or 0.5mm
2
(twisted).
Baldwin Boxall recommend using 1.5mm
2
cable.
The typical maximum length of cable between units is as follows:
“Slow” speed (six concurrent audio channels) - 300 metres
“Fast” speed (fourteen concurrent audio channels) - 200 metres
2.2.2 Cable Connections to BVRDCIF
The conductor connections are colour coded on the BVRDCIF
module to enable correct connection.
It is important that the pairs are wired diagonally opposite within
the cable as shown in Figure 2.2.
Figure 2.2 — Diagonally Opposite Pairs within Cable
