Thanks for the replies! Doesn't sound too good I'm afraid... in addition to the shipping issues, I wonder if it was the right decision to use this OCXO... Are there any "low phase noise" OCXO available (preferably from stock) from more "conventional" sellers? (i.e. distributors/online shops based in US or EU) MTI260 and the oscilloquartz look nice, but only found em on ebay as well... I've ordered 4 pieces of the MV89, maybe chinese customs will clear em and one of em will be working ok, altho thats a lotta maybes... if anyone has any alternative suggestions, please let me know!
> Von: Azelio Boriani <[email protected]> > Datum: 7. November 2013 11:16:11 MEZ > An: Discussion of precise time and frequency measurement <[email protected]> > Betreff: Re: [time-nuts] Morion MV89 and LTC6957 > Antwort an: Discussion of precise time and frequency measurement > <[email protected]> > > > Daniel, I suggest a MTI 260 OCXO or an Oscilloquartz 8663. > > On Thu, Nov 7, 2013 at 1:47 AM, Bob Camp <[email protected]> wrote: >> Hi >> >> All of the eBay OCXO’s are pulled from scrap gear. If they have been on eBay >> for a while, it’s a good bet that the gear has been pretty well picked over. >> The only time you can get fairly good parts is when the first hit the market. >> >> Bob >> >> On Nov 6, 2013, at 5:54 PM, Daniel Mendes <[email protected]> wrote: >> >>> >>> Ok... maybe i´ll make a not so smart question but... if the MV89 is bad, >>> what´s the recomended parts from ebay for something like that? (10MHz OCXO >>> to upgrade some sort of equipment) >>> >>> (I´m asking because I did almost the same thing than our friend Hagar... I >>> noticed that the MV89 wasn´t as good as I would like it to be). >>> >>> Daniel >>> >>> Em 06/11/2013 20:29, Bob Camp escreveu: >>>> 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 >>>> <[email protected]> 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! _______________________________________________ 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.
