[time-nuts] Unknown Efratom 10MHz Assy, information asked

Arnold Tibus Arnold.Tibus at gmx.de
Mon Oct 31 14:02:03 EST 2005

Hello to the group, 
I have got in my hands a very nice looking board 
from EFRATOM equipped with a 10 MHz OCXO. 
The designation on the top of the board is 
the label underneath shows
The Ocxo P/N is 105243-001, 10,00MHz
The board is complete with 3 x 9pin D-Type connectors
2x fem. 1x male, which seem to be the connector 
for the powering of the assy. 
There are 2x SMA conns. fem., J2 and J3, J1 is not 

For memory backup there is a mignon battery holder on.
The small board monted on top of the main board 
does have a PLL system with a 74HC4046N and a lot 
of other typical chips assembled (CD4060, 74HC08,
54HC573F, AD75388Q and others.).
I guess this was a part of a Rb-reference device, 
too nice to disassemble. 

Therefore I ask into the round table all the experts, if there 
is somebody who could help me with more details, circuit diagram 
or I/F informations etc. 

As I am anyway trying to set up a GPS disciplining system 
for a 10 MHz OCXO or a Rb LPRO oscillator.

BTW. I am enjoying since a few weeks following all the expert 
discussions on this site and I red most of the technical issues 
a few years backwords, I learned a lot, thank you all the 
excellent discussions and informations of the experts.
I would be happy to get informative answers and help, 
thanks in advance,

excuse me my struggling english please, I am willing to learn as 
well on that point. 

Arnold, DK2WT

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