SSS Siedle BFS 850-02 - Installation with J-Y(ST)Y; Increased range operating mode

11
3 Conguration, conductor lengths
Installation with J-Y(ST)Y, increased range
Installation with J-Y(ST)Y
The ZBVNG 650-... must be plugged
into the BVNG 650-...!
In deviation from the range
specication in standard systems
with YR cable material, when using
J-Y(ST)Y with 0.8 mm an increased
range is possible.
Conductor material J-Y(ST)Y cable
with 0.8 mm diameter:
• max. 150 m from the bus video
line rectier to the most distant user
in the monitor branch
• max. 150 m from the bus video
line rectier to the most distant user
in the camera branch
Increased range operating mode
The ZBVNG 650-... must be plugged
into the BVNG 650-...!
When using cable material J-Y(ST) Y
with 0.8 mm, it is possible to
increase the distance from the
bus video line rectier to the bus
telephones with colour monitor. In
this case, each bus telephone with
colour monitor must be provided
with an additional power supply
(e.g. video line rectier VNG 602-0).
At the bus video line rectier
BVNG 650-... the operating mode
switch must be set to 2.
Conductor material J-Y(ST)Y cable
with 0.8 mm diameter:
• max. 200 m from the bus video
line rectier to the most distant user
in the monitor branch
If it is necessary to use bus dis-
tributors within the installation, the
attenuation of the conductor
material and the bus distributor
must be taken into consideration.
With a core diameter of 0.6 mm, the
range is halved. Installation is also
possible in a multiple line system
with 0.8 mm conductor material.
In a multiple line system this
facility can be used to increase the
range in every line.
In the case of a parallel call to sev-
eral bus telephones with video, the
admissible conductor length of the
power supply must be noted. For
more information on supply and
parallel switching, see Chapter 8,
page 94.
The following still applies within
any one line: The maximum length
of the conductor material must not
exceed 1,500 m.
Installation is also possible in a
multiple line system with 0.8 mm
conductor material.