Sarah, That temperature sensor does have an effect on the final outcome as it is part of the internal equation. So buffering the ambient temperature is important.
You do not need to go crazy, but having it contained in a box with some small amount of heat applied and maintained by some controlling mechanism would be a good way to go. The amount of heat depends upon what extremes your location experiences over the day/week/year and the effective insulation of the container. Ideally you would want no temperature change, but, obviously, that is not practical, so a one degree variance would be a reasonable goal. Bill....WB6BNQ Sarah White wrote: > 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. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
