There is a control program: http://www.prc68.com/I/pdf/NGOcomm.zip
on the E1938A page at: http://www.prc68.com/I/HPE1938.shtml On Fri, Jul 5, 2013 at 3:05 PM, Graham / KE9H <time...@austin.rr.com> wrote: > 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.