[time-nuts] Thunderbolt oven / non-stable operating temperature

Sarah White kuzetsa at gmail.com
Mon Dec 10 23:37:04 UTC 2012

On 12/10/2012 6:10 PM, Arthur Dent wrote:
> I believe that the high temperature alarm you see is triggered at 50 degrees 
> C.  If that is what you're seeing without artificially raising the temperature 
> of the Thunderbolt by insulating it so it can't radiate the heat, what I said 
> about replacing the chip is correct but if it is staying within a few degrees 
> over the course of  the day and is in the 40 degree C range without being 
> insulated, the DS1620 thermometer chip is o.k..

My particular thunderbolt seems to be from 2004, so I guess that manual
is at or around checked:

ThunderBolt[tm] GPS Disciplined Clock User Guide Version 5.0

5.0 is a version of the manual published in 2003

Table C.2.2 Environmental Specifications:

Operating Temp: -0°C to +60°C
Storage Temp: -40°C to +85°C

... so I guess I shouldn't worry about a few degrees of difference in
the reported temp, especially considering that the sensor in question
isn't on the OCXO itself.

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