It was used in the HP 8566B Spectrum Analyzer for a while at least. So whatever the 8566B specified for its OCXO would be a minimum.
I have a dead* one here from my 8566B. The pins are wired to a connector with the following colors: 1,2) Black 3) Red 4) Purple 5) Orange 6) Black No EFC to my knowledge. From the 8566B service manual, and assuming that the wire numbering matches the color codes, then: Red: +20V switched, i.e. osc power supply. Black: Ground. Purple: HOVC i.e high oven cold (where high is 20V or so). Orange: +22V oven supply. The Corning branded version of the OSC92-51B is still available NOS. I put one in my 8566B. I got a few spares too. Ignore the ridiculous ebay prices if you want one and try Quest components who may still have a few (though you'll pay their line item minimum if you only want one). * It was > 70 Hz out and could not be adjusted into spec. On Tue, Apr 13, 2021 at 3:58 PM Bob kb8tq <kb...@n1k.org> wrote: > Hi > > Since this is a part that Ovenaire made for HP, probably the best way to > work out what’s what is to find the equipment that it went into. Best guess > is that would be an item that shows up in the 1985 ~ 2005 HP catalogs. > > ( = OSC92 is an Ovenaire part number that was carried on after McCoy > folded Ovenaire into the “empire”). That makes it a > 25 year old spec. > > Rough guess at the specs: > > 5x10^-8 over 0 to 70C > -150 dbc/Hz at 10 KHz offset > 10 dbm +/- 3 db > 10W power at turn on. > > With the fine adjust it may or may not have an EFC. There are enough pins > for > it to have one. > > Pinout looking at it with the SMA “up” and numbering from left to right: > > 1) V- / return / ground > 2) Case > 3) B+ > 4) ??? > 5) ??? > 6) ground > > Bob > > > On Apr 13, 2021, at 3:17 PM, Juerg Koegel <j.koeg...@gmail.com> wrote: > > > > I am looking for data (PinOut, Power, Stability, Phase Noise, EFC ) for > the 10MHz OCXO McCoy Electronics OSC92-51B. > > Thanks for all information. > > > > Juerg > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > send an email to time-nuts-le...@lists.febo.com > > To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send > an email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
