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Dear All,
After some shipping time, my E1938 arrived today! :-) :-) :-)
Thank you Rick!
First thing was examining the board, oscillator and the HP-test
notes/labels. Most of the specs mentioned there are logical and
The labels may or may not be significant. If the frequency
is indeed -2.94 Hz at 2.5V EFC, you could probably get it back
to 10 MHz by increasing the EFC voltage. You can also decrease
the bridge capacitor to bring the frequency up if necessary.
The factory was supposed to choose the capacitor
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Hi Rick:
If the aging drift is up in frequency then there might be an advantage in
starting at the low end of the window. Any idea of how these age?
Have Fun,
Brooke Clarke
http://www.PRC68.com
Hello,
If anyone has used Prologix GPIB-USB controller with LeCroy ScopeExplorer,
could you please contact [EMAIL PROTECTED] offline?
Much appreciated.
Regards,
Abdul
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Hi Rick:
I've heard that but it's not clear to me which oscillators are in the non aging
catagory. For example what about the HP 10811 or the Stanford Research SC 10?
The plot on Brooks Shrea's web page for his GPSDO shows linear aging on his
Austron 1250. See:
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No oscillators are in the non aging category. However, the E1938
and 10811 are in the RANDOM aging category. As I previously said,
the direction of the aging is random. Now you have brought up the
so called disciplined
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OK I bought one of those Rubidium's off of that E*** place and I am
wondering what
I am getting.
Is it obvious how to power it up or do I need a manual, Some one on here
had some pictures,
that I didn't book mark. Anyone
On Tue, 2 Oct 2007, Rick Karlquist wrote:
No oscillators are in the non aging category.
Very true!
For fun and education, perhaps someone local to me in San Jose would like to
test the aging of a HP precision oscillator standard that has been powered
almost continuously for a half century! It
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Bill Janssen wrote:
OK I bought one of those Rubidium's off of that E*** place and I am
wondering what
I am getting.
Is it obvious how to power it up or do I need a manual, Some one on here
had some pictures,
that I
I emailed Brooks about four weeks ago asking him if he could still supply
the programmed PICs as he volunteered when his article was first published.
I got no response, does anyone know of Brooks?
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