Hi There's pretty much nothing in a TBolt that wears out. The heat rise on the parts on the pc board is modest and the only heated part is the OCXO. Cooling down the OCXO actually increases the stress on it (more heater power pulled => more stress on the heater).
Obviously you can get it to hot. The OCXO does have an upper temperature limit. I don't think that extreme measures are needed to keep it at a rational temperature. Simple fans and boxes seem to be working pretty well for people. Any setup that results in sub 60C temperatures at the OCXO is likely to have very little impact on reliability or performance. The more important question is how you package it to reduce gradients. If you use the internal sensor, it's location is a bit sub-optimal for tracking the OCXO. You could put all sorts of sensors throughout the package. An easier thing to watch is the correlation between external temperature and EFC voltage. As long as EFC correlates (positive or negative) with outside temperature, you have room for improvement. Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Pete Lancashire Sent: Tuesday, January 18, 2011 12:16 PM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Thunderbolt cooling vs heating for stability Been getting ready to build a box for the t'bolt and instead of it all getting hotter to maintain a stable temp is the idea of cooling with a Peltier cooler, or a mix of a Peltier and a heater ? Extending life time is the major concern -pete _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
