[time-nuts] Morion MV89 and LTC6957

[Bob Camp]

Hi

You would want a 50 ohm load on the output of the OCXO. Based on recent experience, you may have to buy 10 or more before you find one that is reasonably close to working correctly. The low output issues are far from the only problem on these units. 

Bob

On Nov 6, 2013, at 9:27 AM, HagaaarTheHorrible <hagaaar587plus7 at googlemail.com> wrote:

> Hello there,
> 
> I'm trying to build a low phase noise signal generator with a Morion MV89 OCXO. ( http://www.morion.com.ru/catalog_pdf/MV89-OCXO.pdf )
> The 10 MHz Sine coming from the MV89 shall be converted to a 10 MHz rectangle with the LTC6957-3 ( http://cds.linear.com/docs/en/datasheet/6957f.pdf ).
> Since the information in the MV89's data sheet is rather thin and shipping is taking a lot longer than expected/promised, I thought I'd ask if someone here has any experience with it and maybe can answer some questions I have...
> 
> 1. Does anyone know if the MV89 is internally AC coupled / if the Output Sine has an Offset?
> 
> 2. I'm not sure if termination is needed in this case or which way to terminate would be best for a low phase noise/low jitter application. Can anyone give me some hints to what would be important?
> 
> 
> Thanks a lot!
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