Mike, here is the effect of the A/C cycling on and off during a warm spring day on the delay through a piece of RG-8 cable maybe 3 feet long:
http://www.ko4bb.com/Test_Equipment/data/HP10811-raw.png The full scale (screen height) is about 5x10 to the -10, the length of the record was about one hour. The cable was very short, I did not record the temperature variation but it was maybe 2F. You can imagine what a 100W light bulb (or a warm body) might do if you try to measure at 10 to the -12, and/or you have longer cables. Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -----Original Message----- From: Mike S <mi...@flatsurface.com> Sender: time-nuts-boun...@febo.com Date: Tue, 15 May 2012 17:23:41 To: <time-nuts@febo.com> Reply-To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Why are 1PPS signals so skinny? On 5/15/2012 5:14 PM, saidj...@aol.com wrote: > it is the effect of what follows after that leading edge, and propagates > down the power supplies to cause side effects that is being discussed here. I'm asking "What side effects?" I haven't seen any mentioned. And really, if an increase in power draw of 10 watts for an entire lab environment causes any problems, I'd question the quality of the power supplies, and ask what happens when you simply turn on the light? _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
