[time-nuts] Counter OCXO behaviour
David
davidwhess at gmail.com
Mon Jan 14 20:52:25 UTC 2013
The Racal Dana 1991/1992 OCXO has a big pair of pan head screws
exposed on the back. One is coarse adjust and one is fine adjust. I
have the TCXO version which also exposes the adjustment on the back so
you do not have to open anything to get to it.
You can see them here:
http://www.eevblog.com/forum/reviews/racal-dana-1992-teardown/?action=dlattach;attach=20937;image;PHPSESSID=a5230a2beafd27b99c07580940fe1574
On Mon, 14 Jan 2013 12:34:04 -0800, Ed Breya <eb at telight.com> wrote:
>Is it manually adjusted right at the oscillator? If so, just opening it
>up and sticking a screwdriver in there gives it a thermal shock, and the
>adjusted element will have mechanical stress that has to settle out too
>- the value can change for a while.
>
>Ed
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