Specifications

5
Physical Planning Considerations
5-5
Physical Planning Considerations
When using multimode cable, note the decrease in performance as
the cable core diameter or data transmission rate increases. When
using singlemode cable, performance is a function of transceiver
type. Data transmission distance and link budget are not affected by
data transmission rate.
Cost Effectiveness Cost is another factor governing the choice of transceiver type and
optical fiber. Shortwave laser transceivers and multimode cable offer
a less expensive solution if data transmission distance is not critical.
Device or Cable
Restrictions
The choice of transceiver and cable type may be restricted or
dictated by:
• Device restrictions - Some devices may be restricted to use of
only one type of transceiver (shortwave or longwave). Refer to
the device’s supporting documentation for information.
Table 5-1 Cable Type and Transmission Rate versus Distance and Link Budget
Cable Type and Data Transmission Rate Unrepeated Distance Link Budget
62.5/125 micron multimode at 1.0625 Gbps 300 meters (984 feet) 3.0 dB
62.5/125 micron multimode at 2.1250 Gbps 150 meters (492 feet) 2.2 dB
62.5/125 micron multimode at 4.2500 Gbps 75 meters (246 feet) 2.3 dB
62.5/125 micron multimode at 10.2000 Gbps 33 meters (108 feet) 2.4 dB
50/125 micron multimode at 1.0625 Gbps 500 meters (1,640 feet) 3.9 dB
50/125 micron multimode at 2.1250 Gbps 300 meters (984 feet) 2.8 dB
50/125 micron multimode at 4.2500 Gbps 150 meters (492 feet) 2.5 dB
50/125 micron multimode at 10.2000 Gbps 82 meters (269 feet) 2.2 dB
9/125 micron singlemode at 1.0625, 2.1250, 4.2500, or
10.2000 Gbps (10-kilometer SFP optical transceiver)
10.0 kilometers (6.2 miles) 7.8 dB
9/125 micron singlemode at 1.0625, 2.1250, 4.2500, or
10.2000 Gbps (20-kilometer SFP optical transceiver)
20.0 kilometers (12.4 miles) 7.8 dB
9/125 micron singlemode at 1.0625, 2.1250, 4.2500, or
10.2000 Gbps (35-kilometer SFP optical transceiver)
35.0 kilometers (21.7 miles) 7.8 dB