Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-04 Thread Dan Kemppainen
On 10/2/2013 10:34 PM, time-nuts-requ...@febo.com wrote: Hi guys, I am going to pull it apart this weekend and do some more exploring. Hope to get some pictures for reference. I think I will make up some extender cables so I can operate the CBT assembly away from the main chassis.

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-04 Thread Tom Miller
, October 04, 2013 8:23 AM Subject: Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum On 10/2/2013 10:34 PM, time-nuts-requ...@febo.com wrote: Hi guys, I am going to pull it apart this weekend and do some more exploring. Hope to get some pictures for reference. I think I will make

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-04 Thread Rex
On 10/4/2013 9:41 AM, Tom Miller wrote: Maybe someone can tell me the best way to search the time-nuts archive. Do you need to download all the files to a common DB? Regards, Tom I usually use this for time-nuts searches... http://www.mail-archive.com/time-nuts@febo.com/info.html

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-03 Thread Bob Camp
in the Beam current (meter 3) as control sweeps. Tom - Original Message - From: Tom Knox To: Tom Miller ; Time-Nuts Sent: Wednesday, October 02, 2013 2:00 PM Subject: RE: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum If anyone has a service

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-03 Thread paul swed
- Original Message - From: Tom Knox To: Tom Miller ; Time-Nuts Sent: Wednesday, October 02, 2013 2:00 PM Subject: RE: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum If anyone has a service manual I am also very interested. Thanks Thomas Knox From: tmil

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread Bob Camp
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

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread paul swed
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

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread EWKehren
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, paulsw...@gmail.com writes: Boy is this good advice thats why I turn Frankenstein 9$125 flea market

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread paul swed
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

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread J. L. Trantham
: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum 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, paulsw...@gmail.com writes: Boy is this good

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread Tom Miller
- Original Message - From: J. L. Trantham jlt...@att.net To: 'Discussion of precise time and frequency measurement' time-nuts@febo.com Sent: Wednesday, October 02, 2013 10:07 AM Subject: Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum Tom, I defer to Bert on these issues

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread Tom Miller
Hello Corby, Thanks for the help. Yes, could you copy me on the information for the U1 chip? I do not have anything other than the user manual from Brooke. At this time, anything will be a great help. Best regards, Tom - Original Message - From: cdel...@juno.com To:

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread Tom Knox
If anyone has a service manual I am also very interested. Thanks Thomas Knox From: tmil...@skylinenet.net To: time-nuts@febo.com Date: Wed, 2 Oct 2013 13:22:45 -0400 Subject: Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum Hello Corby, Thanks for the help. Yes, could

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-02 Thread paul swed
wrote: If anyone has a service manual I am also very interested. Thanks Thomas Knox From: tmil...@skylinenet.net To: time-nuts@febo.com Date: Wed, 2 Oct 2013 13:22:45 -0400 Subject: Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum Hello Corby, Thanks

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-01 Thread Tom Miller
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

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-01 Thread Tom Knox
Subject: Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum 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

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

2013-10-01 Thread J. L. Trantham
). Good luck. Joe -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Miller Sent: Tuesday, October 01, 2013 8:53 PM To: Tom Miller; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] FTS 4060 Cesium Time