I think the data shows that the heaters were losing ground, which would explain the steadily falling temp of the SC cut quartz.
Thomas Knox From: [email protected] Date: Wed, 19 Dec 2012 21:28:15 -0500 To: [email protected] Subject: Re: [time-nuts] Z3805A cooling requirements? Bob, I did the test with my 53132A as a fan blowing on the 10811 after removing the shielding and letting it stabilize first. The rate of flow from the counter is actually not very strong, but the effects are massive. Attached are the results, and they speak for themselves. There is an ADEV plot with the unit inside the foil insulation without airflow showing a very nice 1E-012 to 2E-012 stability all the way up to 100s, then the ADEV with airflow on the unit, as well as 10 minutes worth of frequency plot while inside the airflow. The ADEV is about 10x worse at around 100s and pretty much goes straight up at intervals greater than 2 seconds. This result is in line with our DOCXO oven tests we had done some years ago. QED. bye, Said In a message dated 12/19/2012 16:48:44 Pacific Standard Time, [email protected] writes: Hi Ok, what happens if you keep the air gun in the exact same position and let it stabilize for an hour with no insulation around the OCXO ? Bob _______________________________________________ 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.
