CHAPTER 4: SPECIFICATIONS
Multimode Fiber:
Core diameter: | 62.5 ∝m nominal | |
Cladding diameter: | 128.0 | ∝m maximum |
| 122.0 | ∝m minimum |
Cable attenuation: | ≤ 2.5 dB/km typical | |
Single Mode Fiber:
Core diameter: | 8.7 ∝m +/- 0.5 ∝m |
Cladding diameter: | 127.0 ∝m maximum |
Cable attenuation: | ≤ 0.5 dB/km typical |
Multimode Fiber Optic Cable Length
The PMD FDDI standard specifies the following:
Maximum total |
|
cable length: | 100 km (62 miles) — dual ring |
| 200 km (124 miles) — wrapped |
Maximum multimode |
|
cable length between |
|
adjacent nodes: | 2 km (1.2 miles) |
Single Mode Fiber Optic Cable Length
The SMF-PMD FDDI standard specifies the following:
Maximum total
cable length:100 km (62 miles) — dual ring 200 km (124 miles) — wrapped
Single mode cable length
between adjacent nodes:40 km (24 miles) maximum 25 km (15 miles) typical
Twisted Pair Cable Length
The
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