Mike, That's the same card I used for the 40-day run: http://leapsecond.com/pages/mains/
It's robust and professional (used in the electric grid industry) and nice if you already have a working XL-DC but most of us now use a $1 microcontroller or DCD pin and NTP to track mains phase & frequency. /tvb > On Feb 26, 2015, at 2:27 AM, Mike Cook <[email protected]> wrote: > > Just a heads up as I stumbled on an interesting XL-DC plugin module for sale > on ebay while looking for info for Doug. > TrueTime Symmetricom XL-DC FTM-III AC Line Frequency Measurement & Time > Monitor > > Unfortunately I don’t have an XL-DC, but it looks just just the tick for a > time nut who has. > > > "Ceux qui sont prêts à abandonner une liberté essentielle pour obtenir une > petite et provisoire sécurité, ne méritent ni liberté ni sécurité." > Benjimin Franklin > >> Le 25 févr. 2015 à 20:35, Doug Ronald <[email protected]> a écrit : >> >> I'm hoping someone can shed some light on my problem receiving any GPS >> satellites. >> >> I have two TrueTime GPS Time & Frequency Receivers, Model XL-DC. One has a >> regular crystal oscillator, and the other one has a rubidium oscillator. I >> have two outdoor GPS antennas with internal LNAs, one a 28 dB gain unit, and >> the other a 40 dB unit. When either antenna is connected to my Lucent >> KS-24361, it locks right up and tracks up to 8 satellites. When either of >> the antennas is connected to the XL-DCs, they just sit there and status : >> "Looking for GPS satellites". >> >> In the Alarm menu of either XL-DC there is an alarm for Antenna. Both units >> say "OK" and if I disconnect the antenna they both logically say "Open". So, >> what is the problem? I can't believe I don't have enough signal, after the >> Lucent locks-up right away. Is it possible the TrueTime sanctioned antenna >> has a down converter in it, perhaps placing the GPS signal from L-band to >> some lower frequency? I would appreciate any info the group might have... >> >> -Doug Ronald >> W6DSR >> >> _______________________________________________ >> 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. > > _______________________________________________ > 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. _______________________________________________ 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.
