Fiber Optic Cable Specifications; Multimode; Single-Mode - Cabletron Systems MCC-16 User Manual

C.2 FIBER OPTIC CABLE SPECIFICATIONS
A fiber optic cable comprises a drawn fiber of pure glass (or plastic),
enveloped within another layer of glass called cladding. Around the fiber
(core and cladding) are wrapped multiple layers of reinforced matter that
protect the fiber. Multimode fiber cable, typically used for station
attachment, consists of several fibers. Single-mode fiber consists of a
single fiber.
C.2.1 Multimode
Table C-3 lists signal tolerance specifications for Multimode fiber optic
cable supported by Cabletron products.
Table C-3 Signal Tolerances For Multimode Fiber Optic Cable
Cable Type
50/125 m

Multimode

62.5/125 m
Multimode
100/140 m
Multimode
Typical Signal Attenuation Rate:
C.2.2 Single-Mode
Table C-4 lists signal tolerance specifications for Single-Mode fiber optic
cable supported by Cabletron products.
Table C-4 Single Tolerance For Single-Mode Fiber Optic Cable
Cable Type
Single Mode
8/125-12/125 m
Typical Signal Attenuation Rate:
Attenuation Testing
Fiber optic cable must be tested with an attenuation test set adjusted for
an 850 nm wavelength for Multimode and 1300 nm for Single Mode. This
test ensures that a cable's signal loss is within acceptable limits.
Attenuation
13.0 dB
16.0 dB
19.0 dB
1.5 dB/km
Allowable Attentuation
10.0 dB or less
0.5 dB/km
MEDIA SPECIFICATIONS
Maximum Drive Distance
2 km (2187.7 yards)
2 km (2187.7 yards)
2 km (2187.7 yards)
Maximum Drive Distance
10 km (10,936.0 yards)
C-3