Thanks Bert as I say I am no expert on the FTS. Also I was surprised to see that they seem to sell at quite reasonable prices like $3K. There is a site nixxiebunnie that has several nice internal pix. The bottom pix shows the low V supplies and voltages thats printed on the supplies. Good place to take a look. Regards Paul.
On Wed, Oct 2, 2013 at 9:19 AM, <[email protected]> wrote: > Your observations are tru for HP tubes but not FTS. I see FTS tubes after 2 > years pump down in 20 minutes. > Bert Kehren > > > In a message dated 10/2/2013 9:17:07 A.M. Eastern Daylight Time, > [email protected] writes: > > Boy is this good advice thats why I turn Frankenstein 9$125 flea market > special)on every quarter check that it works etc. The ion pump being 0 is > the place to start looking as Joe says 0 is very very hard to believe in > the types of C units we get. Usually they have gas and the needle pegs or > is quite high stopping the unit from starting. > So do basic troubleshooting first. All voltages RF.... > Many of us here have experience with the HPs so the FTS may not have the > places to take a look and see whats going on that the HPs have. > Regards > Paul > > > On Wed, Oct 2, 2013 at 7:28 AM, Bob Camp <[email protected]> wrote: > > > Hi > > > > Welcome to the reason a lot of us don't have running Cs standards. > > > > There is a very basic wear out mechanism with Cs. Once it's moved from > one > > end of the tube to the other, the tube is dead. There is no practical > way > > to rebuild the tubes. Running one will simply wear out the tube. They > are a > > very expensive toy to keep working. > > > > Bob > > > > On Oct 1, 2013, at 9:53 PM, Tom Miller <[email protected]> wrote: > > > > > Update. > > > > > > I received the FTS 4060 unit and guess what - it does not work. > > > > > > So a few questions to the experts on this list- > > > > > > 1) How can I verify that the CBT is in fact bad? Is there any easy > way > > to confirm the high voltage supplies are working short of pulling the > CBT > > assembly out and making direct HV measurements? How about the other tube > > functions? There is no beam activity on meter 3 and the ion pump voltage > is > > 0. > > > > > > 2) If it is a bad tube (likely), is there any way it can be rebuilt? > > Does anyone do such a thing? > > > > > > 3) Is there any source for used tubes? > > > > > > 4) If this is a dead end, is there any value in the rest of the > unit? > > This one has the display clock and the 5 MHz and 100 kHz options. > > > > > > Or should I just bury it in the back yard and lick my wounds? > > > > > > > > > Regards, > > > Tom > > > > > > > > > ----- Original Message ----- From: "Tom Miller" > <[email protected]> > > > To: "Discussion of precise time and frequency measurement" < > > [email protected]> > > > Sent: Tuesday, September 24, 2013 7:10 PM > > > Subject: [time-nuts] FTS 4060 Cesium Time & Frequency Standard, Datum > > > > > > > > > While we are on Cs standards, is there technical information (service > > > manual) available for the Datum FTS 4060 Cesium Time & Frequency > Standard > > > and its options? > > > > > > Thank you, > > > Tom > > > > > > _______________________________________________ > > > time-nuts mailing list -- [email protected] > > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > _______________________________________________ > > > time-nuts mailing list -- [email protected] > > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
