[time-nuts] Comments on Tbolt deal?

Steve Rooke sar10538 at gmail.com
Mon Jun 7 13:31:14 UTC 2010


Hi Bob,

On 7 June 2010 23:51, Bob Camp <lists at rtty.us> wrote:
> Hi
>
> It's also amazing that the laser marking systems seem to get worse and worse at marking parts legibly....

That's the modern definition of progress.

Steve

> Bob
>
>
> On Jun 6, 2010, at 10:25 PM, Steve Rooke wrote:
>
>> Arthur,
>>
>> 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:-
>>>
>>>> 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
>>>
>>>
>>>
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>>
>>
>>
>> --
>> Steve Rooke - ZL3TUV & G8KVD
>> The only reason for time is so that everything doesn't happen at once.
>> - Einstein
>>
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>
>
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-- 
Steve Rooke - ZL3TUV & G8KVD
The only reason for time is so that everything doesn't happen at once.
- Einstein




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