Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!zephyr.ens.tek.com!vice!georgep
From: georgep@vice.ICO.TEK.COM (George Pell)
Newsgroups: sci.electronics
Subject: Re: Radio Electronics Descrambler
Message-ID: <6558@vice.ICO.TEK.COM>
Date: 21 Dec 90 00:28:47 GMT
References: <1990Dec17.184710.28481@csn.org> <1990Dec19.112229.1@bunyip.enet.dec.com> <1990Dec19.173709.19066@cbnewse.att.com>
Distribution: na
Organization: Tektronix Inc., Beaverton, Or.
Lines: 15

+In article <1990Dec18.224950.7142@usenet@scion.CS.ORST.EDU>,
+harrist@jacobs.CS.ORST.EDU (Tim Harris) writes about debugging
+a home built analog circuit:
+
+ > 	the one who really knows what he's doing).  My brother poked
+ > 	around the board with his finger and BAM, it locked up and was
+ > 	working pretty good but unfortunately when you unplug it you have
+ > 	to poke at it again to jump start it.  At that point we took it
+ 
And many others reply......

Actually what is happening is that the capture range of your PLL is
smaller than the lock range.  The cap that sets the free running
frequency for your PLL is just a bit too small.  Put a 10 pf in 
parallel and it will lock every time.