I will guess to minimize radiated noise. Regards Paul On Fri, Aug 14, 2020 at 4:34 AM <[email protected]> wrote:
> > Corby, > > so why did HP use a coaxial cable for the lamp power? it seems nonsense. > > Luciano > > Luciano P. S. Paramithiotti > [email protected] > www.timeok.it > > Da "time-nuts" [email protected] > A [email protected] > Cc > Data Thu, 13 Aug 2020 10:46:01 -0700 > Oggetto [time-nuts] Isolated +20V for lamp supply > Luciano, > > You should "Ohm out" the lamp connector shield to the chassis with > nothing connected to the connector. > Depending on how your optical unit is mounted there is a good chance the > lamp assy is grounded to the chassis through the threaded stud! > Especially so if the optical is the newer unpainted one. > If so isolating it as you detailed does not change anything! > > Cheers, > Corby > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
