[time-nuts] Trimble Thunderbolt 10MHz amplitude jitter
chris at evib.net
Mon Apr 19 16:31:39 EDT 2010
On 19 Apr 2010, at 20:48, Arthur Dent wrote:
> You may have missed my post yesterday where I said:
> "I had a thunderbolt that displayed a temperature reading of -54.99°C, which
> I was pretty sure wasn't correct. ;-) Apparently the reference in the DS1620
> chip either shorted or opened so this "D" revision chip was outputting its
> lowest possible reading. I replaced it with a "C" revision chip that I found
> (date code 9710C2) and it works great.
> So If you have an "E" revision DS1620 chip that displays the temperature in
> steps and you want to replace it, either a "C" or a "D" revision chip appears to
> work as a replacement. Trimble apparently started using the "E" revision chip
> around mid 2004."
I only joined this list a few hours ago and hadn't searched the archive for which I apologise.
Many thanks for the info re the DS1620 chip. I'll have to take the lid off and see what is currently installed.
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