SSS Siedle AIB 150 Series System Manual page 11

Configuration of the multiple
line system
A multiple line system comprises
individual lines which are linked
together by two cores. The lines
are connected at the bus video line
rectifier using terminals SaV and SbV.
In multiple line systems, speech and
video connections are possible from
one line to another. To generate a
multiple line system, the bus line
rectifier accessory ZBVG 650-... is
required in one of the bus video line
rectifiers.
In each bus video line rectifier,
the bus video line rectifier acces-
sory ZBVNG 650-... is required.
Differentiation between
line 1 and line 2 ...
The lines are consecutively num-
bered using the address switch
"Adr." at the bus video line rectifier
BVNG 650-... Up to 15 lines can be
linked via the SaV and SbV cores.
The bus video line rectifier is
connected via the bus distributor
BVVU 650-...
At the bus video line rectifier, a
bus line rectifier can be connected
directly via the cores Sa and Sb in
order to link a line with In-Home:
Audio. During installation, ensure
that each line is laid in a separate
cable.
Functions applicable across indi-
vidual lines
Door calls, selective door dialling and
switching and control functions can
also be used across individual lines.
Internal speech communication and
call forwarding between users is only
possible within a line.
Conductor length between the
lines
The admissible conductor lengths
within a line are identical to those
in a single line system. In addition,
the admissible conductor length
between the bus video line rectifiers
must be taken into account.
This must be no more than 150 m
(45 dB) between the most distant
bus video line rectifiers (using
J-Y(St)Y cable with 0.8 mm diam-
eter).
As only data exchange takes place
between the bus video line rectifiers,
i.e. no current flows, it is possible
to achieve a range of up to 300 m
using a CAT installation cable (e.g.
CAT5).
In a multiple line system comprising
only 2 lines, connection between
the two bus video line rectifiers is
possible without bus distributor
BVVU 650-...
The maximum admissible lengths
within a line and the attenuation
values continue to be valid.
When installing, ensure without fail
that the camera branch and monitor
branch are not laid in the same
cable. Forward and return lines to a
bus telephone with video must not
be laid in the same cable.
Otherwise, picture disturbance may
result.
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