Bosch PRAESENSA Manual page 22
Public address and voice alarm system
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Also See for PRAESENSA:
- Installation manual (194 pages) ,
- Installation manual (38 pages) ,
- Release notes (24 pages)
Table of Contents
22
en | Installation wiring
200
150
100
[W]
[W]
Ethernet copper cable
–
Ethernet glass fiber cable
–
Product
PRA-SFPLX
PRA-SFPSX
Long range interconnections
Copper CAT‑wiring for Ethernet is limited to a distance of 100 m between nodes. Longer
distances can be covered by using Gigabit fiber interconnections with SFP transceivers. Some
PRAESENSA devices have one or more SFP sockets for this purpose. But call stations need
Power over Ethernet (PoE), which cannot be transported on fiber connections. For distances
above 100 m there is the following alternative:
–
2021.12.21 | V0.15b | F.01U.402.882
656
0.5
492
0.5
328
0.5
50
164
0.5
@100 V
20
@70 V
10
All PRAESENSA devices are designed to be used with Gigabit transmission (1000BASE‑T),
so be sure to use CAT5e or higher network cables. You can use CAT6 and CAT7 cables as
necessary. According to their specifications, CAT5e or higher cables can transmit data up
to 100 m, but the actual potential transmission distance varies depending on factors such
as the cable and termination quality and the environment in which the cable is used. In
case of doubt use a cable checker to see whether the cable conforms to CAT5e (TIA/
EIA‑568‑B).
Use single mode or multi‑mode glass fiber that fits the SFP transceiver. Take the
maximum cable length and attenuation into account.
Glass fiber
Single mode
Multi mode
It is possible to use special Ethernet cables that deliver 1 Gbps and PoE+ up to 196 m.
See Gamechanger cables (http://www.paigedatacom.com/).
Underwriters Laboratories Listing Document (ULLD)
0.5
0.5
0.75
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
50
100
200
25
50
100
Loudspeaker power at end‑of‑line
Max. attenuation
10.5 dB
8.5 dB
1
1.5
1.5
0.75
1
1.5
0.5
0.75
0.75
0.5
0.5
0.5
300
400
500
150
200
250
Max. length
10 km
550 m
Bosch Security Systems B.V.
PRAESENSA
2.5
4
1.5
2.5
1
1.5
0.5
0.75
600
-
300
400
- Quick Links:
- Installation Wiring
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