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

[Tom Knox]

I am currently attempting to put together a working clock out of a 4060 and two 4065's in various states of disrepair and have the the same question you posted since most likely one or two of mine have depleted tubes. Does anyone have PDF's of the service manuals on either of these units? I know Brooke has generously shared some excellent information on his site at http://www.prc68.com/I/FTS4060.shtml  I look forward to hearing how your repairs go.

Thomas Knox



> From: tmiller at skylinenet.net
> To: TMiller at skylinenet.net; time-nuts at febo.com
> Date: Tue, 1 Oct 2013 21:53:09 -0400
> 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 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" <tmiller at skylinenet.net>
> To: "Discussion of precise time and frequency measurement" 
> <time-nuts at febo.com>
> 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
> 
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