Hi The simple list of devices susceptible to this problem is:
Almost all of them from before 1998, many of them after that. The issue is inherent in the design of the GPS coding and un-aided recovery of that coding. The need to address it only was apparent to most marketing departments after the first batch of gear started failing in the late 90’s. Bob > On May 5, 2015, at 3:30 AM, Pete Stephenson <p...@heypete.com> wrote: > > On Tue, May 5, 2015 at 2:42 AM, Andrew Cooper <acoo...@keck.hawaii.edu> wrote: >> We also ran into the TS2100 1995 bug this weekend. For us the consequences >> are a bit more severe... The telescopes will not point to the right >> location in the sky without accurate time! > > Ouch. I have some friends who work at the Subaru telescope. I'll check > in to see if they're affected. > >> For now we have configured a temporary fix... We set up two units, >> previously our primary and hot spare. The first unit is set to use GPS, >> which of course has the correct time but the wrong date. The first unit is >> sending a 1PPS signal to a second unit which is set to 1PPS input mode with >> a manually set date and time. We now have all of the IRIG and NTP >> capability we need and the correct date. > > Out of curiosity, is there no way to "prime" the device with the > current date/time (e.g. from a wristwatch) so it can interpret the GPS > week information correctly? I recall that several other devices have > that ability. > > Is there a list of other common time-nut devices that are susceptible > to similar issues? Lots of time-nuts use surplus equipment that's no > longer supported and it'd not be fun to have them stop working. > > Cheers! > -Pete > > -- > Pete Stephenson > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
