[time-nuts] Comments on Tbolt deal?

Arthur Dent golgarfrincham at yahoo.com
Sun Jun 6 14:21:35 UTC 2010

>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. 


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