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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