[time-nuts] Looking for QST Jan 1990 Article on Crystal S, Q & R testing By DeMaw

Mike Feher mfeher at eozinc.com
Wed Dec 20 19:20:05 EST 2006


Brooke -

In that case why do not just use a signal generator like an 8640B with the
crystal in series with the hot lead and then the other side of the crystal
terminated in 1K or so. Then you can put a scope across the 1K resistor and
watch the scope as you tune across the suspected resonant frequency. I have
done this a lot when I was not sure of the crystal frequency, or, if it was
working or not. Real simple to do. If all else fails, I am sure I have the
QST you mentioned, and could scan the relevant pages for you. I also have a
military crystal activity meter that does do a full characterization, but,
it is big and bulky, and, I hardly ever use it. 73 & Merry Christmas - Mike 

 
 
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
 
 
-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Brooke Clarke
Sent: Wednesday, December 20, 2006 5:15 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Looking for QST Jan 1990 Article on Crystal S,Q & R
testing By DeMaw

Hi:

I'm looking for  the subject article on crystal testing, or any other 
articles on testing crystals.
This is more related to knowing if a given crystal is alive than 
characterizing it, i.e. a Crystal Activity Meter type thing.

Have Fun,

Brooke Clarke

-- 
w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com


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