Go here My Friend: http://www.prc68.com/I/HPE1938.shtml
There is even the schematic and control/calibration software for the E1938 This is Brooke Clarks most excellent site. -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Graham / KE9H Sent: Friday, 5 July 2013 11:05 PM To: time-nuts@febo.com Subject: Re: [time-nuts] HP E1938A Oscillator On 7/5/2013 12:23 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 > > Regards, > > Perrier > > The E1938A is a microprocessor controlled and managed oscillator. Probably with a lot of control/correction/compensation data stored on the processor board. Does anyone have any interface (I/O) definitions for the stainless steel oscillator module? For the processor control board? Instructions on how to calibrate and compensate it? My impression is that it is a lot easier for an experimenter to manage an HP10811 oscillator where you just put power on it and a signal comes out. Thanks, --- Graham / KE9H == _______________________________________________ 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.