Every cable has a minimum bend radius, example, and fibers will be damaged if the cables are bent too
sharply. It is also important not to stretch the cable during installation. Ensure that the bend radius for
fiber optic cables is equal to at least 5 cm (2 in) 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 15: Bend Radius for Fiber Optic Cable
1 = Minimum 5 cm (2 in) radius in 90° bend
Cable Distances and Types
shows one example of cable media types and maximum distances that support reliable
transmission in accordance with international standards (except where noted). Refer to the
website for descriptions of optics and cables, as well as a complete list of supported cable
lengths, and a list of the cable types that are compatible with your equipment.
Table 6: Cable Distances and Types
Standard
Media Type
MHz•km
Rating
Maximum Distance
(Meters)
1000BASE-SX
(850nm optical window)
50/125
µ
m multimode fiber
400
500
50/125
µ
m multimode fiber
500
550
62.5/125
µ
m multimode fiber
160
220
62.5/125
µ
m multimode fiber
200
275
Site Preparation
Install Cable
ExtremeSwitching 5320 Series Hardware Installation Guide
27
