Fiber Optic Cable; Cable Distances - Extreme Networks BlackDiamond 8800 Series Hardware Installation Manual

Fiber Optic Cable

Fiber optic cable must be handled carefully during installation. Every cable has a minimum bend
radius, for example, and fibers will be damaged if the cables are bent too sharply. It is also important
not to stretch the cable during installation. We recommend that the bend radius for fiber optic cable
equals 2-inch (5.08 cm) minimum for each 90 degree turn as shown in
NOTE
Kinks and sharp bends can destroy or impair the cable's ability to convey light pulses accurately from one end of the
cable to the other. Use care in dressing the optical fiber cables: provide satisfactory strain relief to support the cable
and maintain an adequate bend radius at all cable turns, particularly where the cable connects to the I/O module.
Figure 6: Bend radius for fiber optic cable

Cable Distances

Table 3 shows cable media types and maximum distances that support reliable transmission in
accordance with international standards except where noted.
Table 3: Media types and maximum distances
Standard Media Type
1000BASE-SX 50/125 μm multimode fiber
(850 nm optical
50/125 μm multimode fiber
window)
62.5/125 μm multimode fiber
62.5/125 μm multimode fiber
1000BASE-LX 50/125 μm multimode fiber
(1300 nm optical
50/125 μm multimode fiber
window)
62.5/125 μm multimode fiber
10/125 μm single-mode fiber
10/125 μm single-mode fiber*
1000BASE-LX70 10/125 μm single-mode fiber
(1550 nm optical
window)
Extreme Networks Consolidated ExtremeXOS Hardware Installation Guide
Evaluating and Meeting Cable Requirements
Minimum
2-in. (5.08-cm)
radius
in 90∞ bend
90∞
Optical fiber cable
Mhz•Km
Rating
400
500
160
200
400
500
500
–
–
–
Figure 6.
SPG_002
Maximum Distance
(Meters)
500
550
220
275
550
550
550
5,000
10,000
70,000
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