Hi It's also amazing that the laser marking systems seem to get worse and worse at marking parts legibly....
Bob On Jun 6, 2010, at 10:25 PM, Steve Rooke wrote: > Arthur, > > On 7 June 2010 02:21, Arthur Dent <golgarfrinc...@yahoo.com> wrote: >>> On 6 June 2010 09:42, Arthur Dent <golgarfrincham at yahoo.com> wrote: >>>> After about mid 2004 the DS1620 thermometer chip was the "E" >>>> version that displays the temperature in steps of maybe 1 degree. >>>> I've replaced a few of these chips with "C" versions that correct the >>>> graphing problem and make the T-bolts work properly. Unless you >>>> want to find and replace the surface mount chip yourself, make >>>> sure any late model (after mid 2004) t-bolt has a "D" or a "C" chip, >>>> not an "E". >> >>> What happens when you have a TB dated 7/11/03 with a thermometer chip >>> that is labelled:- >> >>> DS1620 >>> 031001 >>> 810AA >> >>> No other markings? >> >>> Thanks, >>> Steve >> +++++++++++++++++++++++++++ >> Steve, If you check closely I think you'll find that the line you read as >> "031001" is actually 0310D1" where the 5th character is a capital "D". >> The 03 is the year and the 10 may be the month of the year. The D1 is >> the revision code. The "C" version was before maybe 2000 so you won't >> see those unless they are used as replacements and the "E" revision >> wasn't used until late 2004. > > Many thanks for your excellent explanation of this. Seems my old tired > eyes even with a magnifying glass were not up to the task. It's ironic > that the older we get the smaller they make the parts. > > Best regards, > Steve > >> -Arthur >> >> >> >> _______________________________________________ >> 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. >> > > > > -- > Steve Rooke - ZL3TUV & G8KVD > The only reason for time is so that everything doesn't happen at once. > - Einstein > > _______________________________________________ > 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.