Hi Mike: I've received an email asking about where to purchase a crystal activity meter and although I have a hand held unit, see: http://www.pacificsites.com/~brooke/Xam.html don't want to part with it. This is an older unit that uses PNP transistors. I'm now thinking about how to build one using a PIC and to that end would like to see what's in the subject article. So if you would email a copy to mailto:[EMAIL PROTECTED] that sure would help.
The final product should be a hand held battery powered easy to use device. Have Fun, Brooke Clarke w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Mike Feher wrote: >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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 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 > > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts