[time-nuts] Frequency Electronics FE-5650A

[geraldm at iprimus.com.au]

Hi Rob,

Thanks for the feedback.

You are right and your comment about the task on your hand in an understatement.

However, us Aussies never give up. I do agree the little brick does run hot,
however both units have failed in the same region and fail to lock. In particular
one unit had suffered from thermal over heating of the surrounding buld housing
which caused melt down of the FET heater device.

I am now trying to trace out the small oscillator and heater control and
feedback PCB to understand it's workings.

Setting the above aside, I was sent a technical manual of the FE-5650A by
Peter Vince. this may help me understand the building blocks within the brick,
however no schematics.

I will keep at it, some one might just read my plight.

Cheers

Gerald 

>-- Original Message --
>From: "Rob Kimberley" <time.bandit at btinternet.com>
>To: "'Discussion of precise time and frequency measurement'"
>	<time-nuts at febo.com>
>Date: Sun, 17 Dec 2006 17:42:24 -0000
>Subject: Re: [time-nuts] Frequency Electronics FE-5650A
>Reply-To: Discussion of precise time and frequency measurement
>	<time-nuts at febo.com>
>
>
>FEI don't issue schematics for their products, and obviously charge for
>repairs. These bricks do run hot as I remember and need plenty of sinking.
>Sorry, I know this doesn't help, but I think you quite a task on your hands
>trying DIY, and should consider contacting FEI www.freqelec.com
>
>
>Rob K
>
>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of Gerald Molenkamp
>Sent: 17 December 2006 11:43
>To: time-nuts at febo.com
>Subject: [time-nuts] Frequency Electronics FE-5650A
>
>Hi, 
>
>Help needed.
>
>I am seeking detailed technical information "schematics if possible" for
>the
>FE5650A Rubidium frequency oscillator
>
>I have 2 units, both have failed in the same manner, and are suffering from
>no lock and over heating.
>
>Have now spent a solid month fault finding both units, I am now desperate
>for any help.
> 
> 
>
>Regards
>
>Gerald
>
>Melbourne Australia
>_______________________________________________
>time-nuts mailing list
>time-nuts at febo.com
>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>
>
>
>_______________________________________________
>time-nuts mailing list
>time-nuts at febo.com
>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts