[time-nuts] Comments on Tbolt deal?

Steve Rooke sar10538 at gmail.com
Mon Jun 7 02:25:23 UTC 2010


On 7 June 2010 02:21, Arthur Dent <golgarfrincham at 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:-
>>No other markings?
> +++++++++++++++++++++++++++
> 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,

>                                         -Arthur
> _______________________________________________
> time-nuts mailing list -- time-nuts at 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

More information about the time-nuts mailing list