2009/3/9 Magnus Danielson <[email protected]>: > So, you can expect that the metal can of the OCXO reacts fairly quickly > and the temperature sensor is a thad slow. This also matches exercises > we have done by using a fan to do forced air convection tests on OCXO > and tempsensor. Putting a *plastic* hood over it significantly lowered > the risetime and the consequence is that the lower risetime allowed the > tempsensor inside the OCXO to sense the change and react to it. This > introduces a third time constant, the time-constant of the OCXO control. > The effect of using a hood or not was significant. The change of > frequency shape was distinct and for the measurement interval we looked > at the phase drift was about 1/3 for this simple addition.
So would boxing in an ocxo with something like polystyrene foam improve the tc of the unit? Thinking about this it is a stage towards having a double oven. 73, Steve -- Steve Rooke - ZL3TUV & G8KVD & JAKDTTNW Omnium finis imminet _______________________________________________ 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.
