[time-nuts] Comments on Tbolt deal?

Steve Rooke sar10538 at gmail.com
Sun Jun 6 09:35:40 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?


> The older T-bolts before ~2001 had Version 2.2 firmware which I
> understand isn't as much of a problem as the Piezo brand oscillator
> they had. Others have commented this oscillator isn't that great.
> The new T-bolts have Trimble branded oscillators which are much
> better.
>                                     -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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