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Bosch
praesideo digital network architecture |
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Unlike
traditional PA systems, the Praesideo uses a network configuration
- rather than having all system elements connected to central
controller. The 'daisy chain' network topology means system
elements can be connected or added at a later date to virtually
any point.
The optical system cabling carries all signals, so no extra
wiring is ever necessary. Smaller systems can easily be expanded
to match changing requirements, for instance creating new
zones. The flexible system architecture allows any type of
equipment to be located wherever is most suitable in the building
( example power amplifiers closer to the loudspeakers).
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What's
more, by connecting the network ends together, a redundant
loop is created so any break in the cable doesn't affect operation
- an important consideration in an emergency system. Automatic
switching to spare power amplifiers in the system is possible
if equipment operation is disrupted.
The
network controller monitors the status of all equipment in
the system and reports any status changes. This monitoring
extends from the capsule of a Call Station microphone to the
end of a loudspeaker line. The external cables connected to
the control inputs are monitored for short and open circuit.
High
reliability and freedom from interference is ensured by the
use of fibre optic network cabling. The single network cable
transmits all audio and control data.
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more information about Bosch Praesideo voice evacuation systems
please do not hesitate to contact
us directly. Or
if you know which part you are looking for, please complete
our quotation
request form and our Bosch team will respond to your
enquiry immediately. |
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Digital
network with a 'redundant loop' and 'end of line loudspeaker
supervision'
All
of the Praesideo system units or nodes have plastic fibre optic
interfaces. Plastic fibre is used to interconnect nodes which
are less than 50m apart. For distances of more than 50m, glass
fibre optic cable is used. A fibre interface unit is used to
convert from plastic to glass or vice versa. |
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This is a special cable with
2 plastic fibres for data communication and 2 copper cores
for the power supply. The cable is supplied with the network
connectors fitted. This cable can be used to connect the network
controller to power amplifiers, audio expanders, call stations
etc.
Cables are available in various
lengths. The extension of the type number indicates the length
of the cable. Only the LBB 4416/00 is supplied without connectors.
The connectors LBB 4417/00 is supplied separately in packs
of 20.
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Praesideo
network cable
connector LBB 4417/00
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LBB
4416/00
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Network
cable 100m (no connectors) |
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LBB
4416/01
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Network
cable assembly 0.5m |
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LBB
4416/02
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Network
cable assembly 2m |
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LBB
4416/05
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Network
cable assembly 5m |
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LBB
4416/10
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Network
cable assembly 10m |
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LBB
4416/20
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Network
cable assembly 20m |
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LBB
4416/50
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Network
cable assembly 50m |
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LBB
4417/00
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20
Praesideo network connectors for network cable LBB 4416/00 |
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LBB
4418/00
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Praesideo
plastic fibre tool kit |
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distances of more than 50m a Fibre Interface Module LBB 4414/00
is used to convert from plastic fibre cable to glass. The fibre
interface is powered by 48Volts from the Network Controller
LBB 4401/00 or automatically powered from a local power supply
if connected. The local power supply being 48Volts DC and up
to 250Watts. |
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module has 2 interfaces: |
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1
x system network connection for Praesideo plastic fibre
1
x system network connection for glass optical connection. This
interface is connected to the glass fibre cable via a glass
patch cable and fibre breakout box. |
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| Zeta
Breakout Boxes are used to terminate glass fibre optic cables.
They can be supplied in Duplex with SC fibre connectors. The
unit, constructed of 1mm steel is supplied loaded with 4 x SC
Duplex connectors and are designed for wall or floor mounting
and feature a screw down lid to prevent unauthorised access.
The enclosure can easily be fixed to the rear of equipment racks.
Dimensions 223mm (w) x 293mm (h) x 42mm (d). |
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strain relief point is provided for the secure management of
incoming fibre cables as well as the provision of a cable router
to facilitate efficient and tidy fibre management. One side
of the SC connector is used to connect to the installed fibre
cable and the other side is used to connect a glass fibre patch
cable to the Fibre Interface Module. |
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Pressac
Zeta SC Duplex fibre patch cords. Supplied standard (FIPC9)
as 1m but available in other lengths (2m, 3m and 5m).
- Zirconia
ceramic ferrules
- 2.5mm
outside diameter
- 62.5u
fibre with orange LSOH sheath
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Pressac
Zeta fibre cold cure termination kit (FIZK1) comprises everything
required to terminate and polish both 50 and 62.5 micron fibres
with SC or ST connectors.
Using
a cold cure epoxy and simple hand held polishing equipment,
the kit contains the following items of equipment which enable
quick and reliable termination of fibre.
The ST and SC connectors (not supplied with termination kit)
required for termination are supplied in kits of 50 or 250
with appropriate quantities of material for termination. Included
are strain relief boots for tight buffered 900u and jacketed
2.5mm cable.
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4-core
multi-mode, tight buffered cable.
The outer sheath is both flame retardant and low smoke zero
halogen (for fire survival cable, see below). The design and
construction of this cable has resulted in a light, easy to
install and cost effective cable. 62.5/125 FDDI grade fibre,
suitable for internal and external use. Cut to length service.
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4-core
loose tube armoured optical fibre cable for duct and direct
burial installations.
The corrugated steel tape provides both high tensile strength
and rodent protection. Low smoke zero halogen. Cut to length
service. |
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This
pre-terminated fibre system significantly reduces both the time
and the expertise required on site when installing fibre cabling.
Available in a choice of cable and connector styles, every cable
length of pre-terminated fibre is supplied with a protective
insulation sock and a power light source loss measurement. Pre-terminated
50/125 cables are available on request.
Pre-terminated cables are a special order, please check lead
times with Nte sales.te |
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A
4-core loose tube multi-mode optical fibre fire survival cable
in accordance with IEC 60331-25. The cable is constructed
with a stainless steel tube with low smoke zero halogen sheath
(LSOH) and includes a fire resistant jelly and fire swelling
tape. The cable is supplied on 1000m drums.
The
cable is also available with up to 24 optical fibres.
For
datasheet - click here >>
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Fibre
termination on-site is available using Nte trained engineers.
For more information please contact
us >>
The 4-core cables described above are recommended by Nte for
use with Praesideo. Nte stock a wide range of glass fibre
optical cables. For a specific requirement, please contact
us >>
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