); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY As far as I can tell, temperature curve plots for quartz typically show both an upper and a lower turnover point (for example, see the pages below). Since the upper is well above maximum ambient, it makes sense that this point is used in O[ven]CXO.
The question is -- does anyone know if the lower turnover point (LTP) is ever used? I ask because I heard that a quartz oscillator might have slightly better short-term stability at the LTP compared to the UTP. If so, this might argue for the extra trouble of using TEC for cooling in some low-noise applications. /tvb http://www.ieee-uffc.org/freqcontrol/tutorials/vig3/vig3_files/slide0164.htm http://www.ieee-uffc.org/freqcontrol/tutorials/vig3/vig3_files/slide0306.htm _______________________________________________ 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.