Technical data

A point-to-point link between 2 SINEC L2FO bus terminals (without an
active star coupler) is possible.
Characteristics of the fiber-optic technique:
➣
long distance between two DTEs when star couplers are cascaded
(max. 17 x 1.4 km = 23.8 km at dr = 187.5 kbps
1)
➣
immune to electromagnetic interference
➣
terminal equipment electrically isolated
➣
supports glass and plastic fiber-optic technology.
The fiber-optic transmission technique has the following characteristics:
Topology: star network with active star couplers as central com-
ponents
Medium: glass fiber-optic cable 62.5/125
µ
m multimode graded
index
optional 50/125
µ
m or 100/140
µ
m multimode graded
index fiber-optic cable
plastic fiber-optic cable 980/1000
µ
m step index
Data rate (dr): 9.6 / 19.2 / 93.75 / 187.5 / 500 / 1.500 Kbps
Cable length: 0...1.400 m
1)
for all data rates listed
Cascading depth 23.8 km at 187.5 Kbps
1
)
(max. 16 star couplers in cascade)
8.4 km at 500 Kbps
1)
(max. 5 star couplers in cascade)
4.2 km at 1.500 Kbps
1)
(max. 2 star couplers in cascade)
No. of stations: max. 16 per star coupler
max. 127 per network
1) When using the SINEC L2FO standard fiber 62.5 / 125
µ
m
System Overview B8976060/02
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