[time-nuts] HP E1938A Oscillator
Azelio Boriani
azelio.boriani at screen.it
Fri Jul 5 09:55:00 EDT 2013
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 <timenut at 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
>
> ==
>
>
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