Another weakness of the 5370 oven oscillator power supply is the use of a simple zener diode for the oscillator power regulator. The 10811 spec shows a 2e-10 change in freq with a 1% change in oscillator voltage.
Another surprising 10811 spec is the 2e-9 change with 50,000 feet of altitude (call it a 90% change in air pressure, probably more). Barometric pressure here can easily change from say 29 to 31 inches of mercury (call it 5%). If the oscillator sensitivity to air pressure is linear, one could see another 1e-10 change in freq with the weather. Plus the thing is also rather sensitive to humidity (1e-9 over 95% relative humidity). Also a 6e-11 change per degree C. _________________________________________________________________ Windows Live™ Hotmail®: Search, add, and share the web’s latest sports videos. Check it out. http://www.windowslive.com/Online/Hotmail/Campaign/QuickAdd?ocid=TXT_TAGLM_WL_QA_HM_sports_videos_072009&cat=sports _______________________________________________ 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.
