On Thu, 1 May 2008 11:13:48 +0100, "Alan Melia" <[EMAIL PROTECTED]> wrote:
>At least with the optical cables it is only the powerfeed circuit that gets >the surge not the amplifier front end as it was in the FDM systems. > >I always thought the terminal equipment was a slighly lower reliability >requirement than the submerged parts but these days the loss of revenue even >with an easily accessed terminal is very high. Now I'm curious how power is tapped off at each repeater point. I understand the daisychain architecture but I'm wondering about the details, what components can withstand the intial high voltage surge as the cable is charging and how the voltage drop at each repeater is maintained relatively constant, even if the repeater fails and quits consuming power. Also, is it true that an optical cable will keep working with a single repeater failure, that the laser light will pass through unamplified? Seems like I read that somewhere but I'm not sure. John -- John De Armond See my website for my current email address http://www.neon-john.com http://www.johndearmond.com <-- best little blog on the net! Tellico Plains, Occupied TN The secret to creativity is knowing how to hide your sources -Albert Einstein _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
