Cabletron Systems BRIM-T6 - Manual (Page 33)

B-1
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.
NOTE: The attenuation values shown include the attenuation attributable
to cables, connectors, patch panels, and reflection losses due to impedance
mismatches in the segment.
Table B-1. Signal Tolerances for Fiber Optic Cable
Cable Type
Total
Allowable
Attenuation
Maximum
Drive Distance
Multimode
50/125
µ
m 13.0 dB or less 2 km (2187.2 yards)
62.5/125
µ
m 16.0 dB or less
100/140
µ
m 19.0 dB or less
Typical Signal Attenuation Rate:
≤
2.5 dB/km.
Single-Mode
8/125-12/125
µ
m 10.0 dB or less 10 km (10936.0 yards).
Typical Signal Attenuation Rate:
≤
0.5 dB/km.