At the risk of misleading Brooke down the wrong path.... For what it's worth, my copy of the HP-5060 manual talks about using the LF coil to test for a possibly magnetized cesium tube. The injected audio test signal is swept from 50Hz to 5kHz. Any sharp peaking in beam current above 2500Hz indicates possible magnetization.
I have no knowledge if the FTS tubes have an LF coil. -Brian, WA1ZMS -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Chuck Harris Sent: Wednesday, April 20, 2005 9:32 PM To: Discussion of precise time and frequency measurement Subject: Re: AW: [time-nuts] Cesium DOES Drift, not No, that isn't quite it! You disconnect the offset magnetic coil, and connect it to a variac with a series light bulb to limit the current. I cannot tell you what size bulb to use, or how much voltage, as I would have to make some educated guesses. Make the wrong guess, and B/O is possible. I read about the technique somewhere, I just don't recall where. -Chuck Brooke Clarke wrote: > Hi Chuck: > > OK. I can set the 3 thumb wheel switches to 999, wait some, then to 000 > wait some, then to 900 , 100, etc. etc. > How many steps is reasonable and how long to wait? > > Thanks for that idea. > > Brooke > > Chuck Harris wrote: > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
