SSS Siedle BFS 850-02 User Manual

6
3 Conguration, conductor lengths
Single line system with bus distributor
Monitor branch 1, max. 100 m/328 ft
Monitor branch 2, max. 100 m/328 ft
Camera branch 1 max. 100 m/328 ft Camera branch 2 max. 100 m/328 ft
Total attenuation max. 45 dB
Conductor length with bus
distributor
If the use of bus distributors is nec-
essary for installation, in addition to
the maximum range, attenuation of
the bus distributors and conductor
material must be additionally taken
into account.
The following information relating
to conductor lengths refers to one
camera branch and one monitor
branch. If several branches are
installed within a line, the informa-
tion is applicable to each branch.
Whichever value (attenuation or
conductor length) is reached rst is
applicable as a specication of the
admissible value.
Maximum conductor length
Conductor material YR cable with
0.8 mm diameter:
• max. 100 m from the bus video
line rectier to the most distant user
in the monitor branch
• max. 100 m from the bus video
line rectier to the most distant user
in the camera branch
• max. 45 dB attenuation from the
most distant user in the camera
branch to the most distant user in
the monitor branch
With a core diameter of 0.6 mm, the
range is halved.
The maximum admissible attenu-
ation is 45 dB within a line.
General rule for YR cable mate-
rial with 0.8 mm diameter:
10 m conductor length corre-
sponds to 2 dB attenuation!
The maximum length of the con-
ductor material to be laid within the
line is 1,500 m.
If the maximum admissible
attenuation of 45 dB is exceeded,
the bus video line rectier accessory
ZBVNG 650-0 must be used in the
BVNG 650-... to compensate for
this loss.
Signal transmission
Only signals from the In-Home bus
may be transmitted over the laid
conductor material. No additional
transmissions, for example PBX
extensions of a telephone system,
S0 Bus (ISDN) or data lines of an
alarm system in the same cable.
The camera branch and monitor
branch must be laid separately and
must not be located in the same
cable. This can result in disturbance
to the picture composition.
Terminating resistor
Transmission of signals within Siedle
In-Home: Video takes place using
high-frequency technology.
In order to avoid disturbance on the
bus cores, the end of each monitor
branch must terminated with an
RC element.
The RC element comprises a resistor
with 100 Ohm and a capacitor with
1 nF. In its as-delivered status, each
bus telephone with colour monitor
has a small tted circuit board with
this terminating resistor at output
terminals TaM/TbM.

SSS Siedle BFS 850-02 Specifications

General

Brand	SSS Siedle
Model	BFS 850-02
Category	Intercom System
Language	English