Power Budget Calculations For Es42 Series, Fiber Media - GarrettCom Magnum ES42 Series Installation And User Manual

ES42 Series Edge Switches
3.8.5

Power Budget Calculations for ES42 Series, Fiber Media

Receiver Sensitivity and Transmitter Power are the parameters necessary to
compute the power budget. To calculate the power budget of different fiber media
installations using Magnum products, the following equations should be used:
OPB (Optical Power Budget) = P
where P
T
Worst case OPB = OPB - 1dB(for LED aging) - 1dB(for insertion loss)
Worst case distance = {Worst case OPB, in dB} / [Cable Loss, in dB/Km]
where the "Cable Loss" for 62.5/125 and 50/125
and the "Cable Loss" for 100/140 (Multi-mode) is 3.3 dB/km,
and the "Cable Loss" for 9/125 (Single-mode) is 0.5 dB/km
and the "Cable Loss" for 9/125 (Single-mode) is 0.25 dB/km (SSCX)
The following data has been collected from component manufacturer's (Agilent's, JDS-
Uniphase, stratus, Lucents') web sites and catalogs to provide guidance to network
integrators and installers-
www GarrettCom com . .
(min) - P
T
= Transmitter Output Power, and P
Installation and User Guide (05/05)
(min)
R
= Receiver Sensitivity
R
µm
(m.m.) is 2.8 dB/km,
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