Crazier question could it be baked in an oven or must you be able to carefully visually watch it?
On Tue, Jan 11, 2011 at 1:53 PM, paul swed <paulsw...@gmail.com> wrote: > Magnus > Crazy question. Though the small rb references are difficult to disassemble > they can be. I believe I have seen what you describe. Might this technique > be used on those also. I have a flaky end of life old telco reference that I > would open up to try it on. Though no heat gun. > Does the RB really become exhausted or does it plate to the glass like you > describe? > Thanks for the thread. > Regards > Paul > WB8TSL > > > On Tue, Jan 11, 2011 at 1:26 PM, Magnus Danielson < > mag...@rubidium.dyndns.org> wrote: > >> Chris, >> >> On 11/01/11 06:43, Chris Erickson wrote: >> >>> Would someone mind posting the manual for this? I have a dead one in the >>> closet that needs my attention and I'm not quite sure where to start. The >>> power supply works, but no other signs of life. >>> >> >> When I get around to scan it I will put it on my web. >> >> I'd guess that you have the same problem as mine. >> >> 1) Bring it out of the closet >> >> 2) Release the lamp-removal tool (its located to the left side just behind >> the front of the XSRM module, there is a pair of holes lower down for screws >> holding the removal tool, but loosing one of them and you can bring the tool >> up) >> >> 3) then bring into the backside of the XSRM module and unscrew the lamp >> anti-clockwise >> >> 4) Look into the lamp. If you see the Rubidium splittered around in the >> bottom, possibly have a dark shade on the glas... then you might consider >> the next steps... >> >> 5) Put the lamp and lamp holder upside down in some form of clamp >> >> 6) Heat the lamp using a normal heat gun, heat it up properly. If you have >> a dark colouration it will release itself as the rubidium evaporates. Keep >> warming for a few seconds more and then let it cool down. >> >> 7) When it has cooled down, look into the lamp and if you still have a lot >> of splittered rubidium in the bottom, redo the process. It took me two times >> to get the hagn of it... one way in the wrong orientation. When you are done >> the rubidium should be located as a single droplet in the middle all the way >> back in the lamp assembly. >> >> 8) Reinsert the rubidium lamp, screw it in clockwise. >> >> 9) Power the XSRM up and let it zimmer for 30 min or so... let the >> amplitude rise (turn the monitor knob to "CHECK"). If it does not go up >> there, let me know. >> >> 10) Using a screw-driver slowly turn the trimmer of the OCXO assembly (Y4) >> and see how the Control Voltage reacts slowly as a response. Then you know >> that the loop has closed. Then in small steps bring the control voltage into >> the middle of the response. >> >> 11) Let it sit there and stabilize before fine-tuning the C-field on the >> multi-turn knob on the front. >> >> I'll scan the manual eventually, but the above is essentially what I did >> to revitilize mine with that same fault description. If you need any part of >> it let me know. I'll try to help you getting it up and running again. >> >> Cheers, >> Magnus >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.