Single Mode And Multimode Fiber Optic Cabling - Cabletron Systems STHI User Manual

IBM
Type
4 Mbps
1 & 2 200 meters
(660 feet)
6 & 9 30 meters
(99 feet)
B.3 Single Mode and Multimode Fiber Optic Cabling
TPIM models F2 and F3 support multimode and singlemode fiber optic
cable respectively. Table B-5 below defines total signal attenuation
tolerances for fiber cabling. Both media have a typical constant attenuation
rate per km of fiber cable and each connector on the cable system
contributes significant additional attenuation. Maximum drive distances
define maximum allowable cable length.
Table B-5. Signal Tolerances for Fiber Optic Cable
Cable Type
50/125 m
62.5/125 m
100/140 m
8/125-12/125 m
The attenuation values shown in Table B-5 include the
NOTE
attenuation attributable to cables, connectors, patch panels,
and reflection losses due to impedance mismatches in the
segment.

Single Mode and Multimode Fiber Optic Cabling

Table B-4. STP Maximum Lengths
Max. Lobe Length
16 Mbps
100 meters
(300 feet)
30 meters
(99 feet)
Allowable
Attenuation
13.0 dB or less
16.0 dB or less
19.0 dB or less
Typical Signal Attenuation Rate:
10.0 dB or less
Typical Signal Attenuation Rate:
Max. Drive Distance
4 Mbps
770 meters
(2525 feet)
513 meters
(1683 feet)
Total
2 km (2187.2 yards)
10 km (10936.0 yards).
16 Mbps
346 meters
(1138 feet)
230 meters
(755 feet)
Maximum
Drive Distance
2.5 dB/km.
0.5 dB/km.
Page B-5