Cabletron Systems BRIM-T6 manual Appendix B Media Specifications and Requirements, Fiber Optic

APPENDIX B

MEDIA SPECIFICATIONS AND REQUIREMENTS

This Appendix provides information about cabling media (Fiber, STP, UTP) used with the BRIM-T6.

B.1 FIBER OPTIC

Table B-1 defines total signal attenuation tolerances for both single-mode and multimode fiber cabling. Both types of cabling have a typical constant attenuation rate per km of fiber cable, and each connector on the cable system contributes significant additional attenuation. Maximum drive distances define maximum allowable cable length.

Table B-1. Signal Tolerances for Fiber Optic Cable

	Total	Maximum
Cable Type	Allowable
		Drive Distance
	Attenuation
Multimode
50/125 ∝m	13.0 dB or less	2 km (2187.2 yards)
62.5/125 ∝m	16.0 dB or less
100/140 ∝m	19.0 dB or less
Typical Signal Attenuation Rate: ≤ 2.5 dB/km.
Single-Mode
8/125-12/125 ∝m	10.0 dB or less	10 km (10936.0 yards).

Typical Signal Attenuation Rate: ≤ 0.5 dB/km.

NOTE: The attenuation values shown include the attenuation attributable to cables, connectors, patch panels, and reflection losses due to impedance mismatches in the segment.

B-1