Maybe the supporting board of the E1938A stores calibration constants...
On Fri, Jul 5, 2013 at 11:00 AM, Bruce Griffiths <bruce.griffi...@xtra.co.nz> wrote: > Magnus Danielson wrote: >> >> Hi Perry, >> >> On 07/05/2013 07:23 AM, Perry Sandeen wrote: >>> >>> >>> >>> List, >>> >>> I was looking on Ebay for some HP E1938A >>> oscillators >>> >>> What I found listed were: >>> >>> HP E1938A 10 MHz Quartz Oscillator with EFC on PC >>> board. $100 Fluke.l >>> >>> HP E1938-60201 Ovenized Crystal Oscillator (on a PC board) $100 Tomy >>> Chou >>> >>> HP E1938A Ovenized Crystal Oscillator W/O a PC board for $50 and free >>> shipping from 2010bluebook. >>> My question is thus: What does the PC board do? All I need is a HP EFC >>> oscillator that would >>> be better that my HP 10811-60111’s. >>> >>> Do I need to worry that the E1938A’s without the >>> board maybe of lessor quality than the others? >>> >>> Fluke.l says his units are good but not stellar. The other venders say >>> they have tested the >>> units and guarantee them to be good. If >>> so, would it get better with aging? >>> >>> So what does the collective wisdom/experience of >>> the group think? TIA >> >> >> Don't get the puck only. Pulling it from the board with all it's support >> functions, including oven controller etc. was a bad move. Do look at the >> material online to see what I mean. >> >> Cheers, >> Magnus >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > However the pucks can be a useful replacement when an E1938A oscillator > fails as one of mine did. > > Bruce > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.