Thanks all - if of no consequence, case closed. On 04/12/19 03:03, Tom Van Baak wrote: > Most TBolt measure board temperature to about 1/100th C resolution. > This is the correct behavior. Some TBolt report temperatures that seem > to step in 1 C increments, or they report a constant -55 C, or they > glitch once in a while. These are bugs. > > You can replace the DS1620 chip if you want. It's perhaps best to > locate the 20-year old version of the chip. There are lots of threads > about this in the archive. > > The DS1620, working or not, has no effect on the performance of a > running TBolt. So I've never bothered replacing any of mine. It may > have a slight effect on extended holdover performance. It's a long > story and I'm not sure if anyone has actually verified or quantified > this. > > Here's additional info about the TBolt & DS1620; it's more complex > than you think: > > "Strange temperature peak" > https://lists.febo.com/pipermail/time-nuts_lists.febo.com/2011-May/039188.html > > > "Trimble Thunderbolt GPSDO Temperature Sensor Details" > http://leapsecond.com/pages/tbolt-1620/ > > "Dallas state machine glitch" > https://www.digitemp.com/docs/ds1820-report.pdf > > /tvb > > > On 12/3/2019 1:47 AM, Christophe Huygens wrote: >> Hi all, >> >> I am back on time-nuts after many moons. >> >> Lady heather shows constant -55deg C for my Tbolt. >> >> all else seems to function fine (is in a constant T environment, sort >> of) >> >> Any thoughts.... >> >> br and thanks >> >> Xtof >> >> _______________________________________________ >> 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.
-- -- http://distrinet.cs.kuleuven.be/people/showMember.do?memberID=u0013167 prof. dr. ir. Christophe Huygens iMEC-KULeuven-DistriNet _______________________________________________ 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.
