Cabletron Systems Spectrum EMM-E6 Podręcznik Użytkownika Pobierz pdf (Strona 24)

CHAPTER 4: SPECIFICATIONS

Page 4-6 BRIM-F6 User’s Guide

Multimode Fiber:

Core diameter: 62.5 µm nominal

Cladding diameter: 128.0 µm maximum

122.0 µm minimum

Cable attenuation: ≤ 2.5 dB/km typical

Single Mode Fiber:

Core diameter: 8.7 µm +/- 0.5 µm

Cladding diameter: 127.0 µm 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 TP-PMD FDDI standard speciﬁes the following:

BRIM-F Book Page 6 Monday, January 29, 1996 9:26 AM

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Cabletron Systems Spectrum EMM-E6 Podręcznik Użytkownika Strona 24