Power Budget Calculations For Csg14 Series, Fiber Media - GarrettCom Magnum CSG14 Series Installation And User Manual

CSG14 Series Gigabit Converter Switch
3.8.6

Power Budget Calculations for CSG14 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
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
The following data has been collected from component manufacturer's (HP's, and
Siemens') web sites and catalogs to provide guidance to network designers and installers
www GarrettCom com .
(min) - P
T
= Transmitter Output Power, and P
T
.
Installation and User Guide (12/08)
(min)
R
= Receiver Sensitivity
R
μm
59
(m.m.) is 2.8 dB/km,