Can I calculate the maximum run length for 1000Base-SX based on:
Max dB Loss (7.5dB) > # patch panels * loss per mated pair + distance attenuation
Where loss per mated pair is nominally < .75 dB, but we test for < .3 dB;
and distance attenuation is 3 db / km
And thus exceed 220 m over 62.5/125 =B5m?
Do I count the switch to patch cable as a mated pair, or is that included within the optical budget?
How about modal dispersion? Is there a calculation for that?
Or should I run replacement 50 =B5m fiber?
(P.S. Sorry about cross-posting, but I realise that this is a better forum than comp.dcom.lans.ethernet for this question.)