Re: [time-nuts] FE-5680A Rb Questions
Does the FE-5680A have a similar Rb cell to the LPRO-101? If so do they have finite lamp life, (can you find the one you buy has little life left?) Or by not reporting the status of the lamp no-one worries about it? cheers, Neville Michie ___ 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.
Re: [time-nuts] FE-5680A Rb Questions
I think every Rb has a finite lamp life... On Fri, Dec 16, 2011 at 11:41 AM, Neville Michie namic...@gmail.com wrote: Does the FE-5680A have a similar Rb cell to the LPRO-101? If so do they have finite lamp life, (can you find the one you buy has little life left?) Or by not reporting the status of the lamp no-one worries about it? cheers, Neville Michie __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://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.
Re: [time-nuts] FE-5680A Rb Questions
It has been pretty well shown that the lamp life is effectively infinite. The only thing that happens to shorten an effective useful campaign of the lamp is when the Rb plates out on the lamp envelope, and renders the glass opaque. That problem, however, is easily remedied, by heating the glass until the Rb evaporates, and then allowing it to redistribute to a more desirable position out of the optical path. Disassembly, and a heat gun are all that is necessary. -Chuck Harris Azelio Boriani wrote: I think every Rb has a finite lamp life... On Fri, Dec 16, 2011 at 11:41 AM, Neville Michienamic...@gmail.com wrote: Does the FE-5680A have a similar Rb cell to the LPRO-101? If so do they have finite lamp life, (can you find the one you buy has little life left?) Or by not reporting the status of the lamp no-one worries about it? cheers, Neville Michie __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://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. ___ 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.
Re: [time-nuts] FE-5680A Rb Questions
Yes, of course, in that sense: the life must be restored at some time. On Fri, Dec 16, 2011 at 2:29 PM, Chuck Harris cfhar...@erols.com wrote: It has been pretty well shown that the lamp life is effectively infinite. The only thing that happens to shorten an effective useful campaign of the lamp is when the Rb plates out on the lamp envelope, and renders the glass opaque. That problem, however, is easily remedied, by heating the glass until the Rb evaporates, and then allowing it to redistribute to a more desirable position out of the optical path. Disassembly, and a heat gun are all that is necessary. -Chuck Harris Azelio Boriani wrote: I think every Rb has a finite lamp life... On Fri, Dec 16, 2011 at 11:41 AM, Neville Michienamic...@gmail.com wrote: Does the FE-5680A have a similar Rb cell to the LPRO-101? If so do they have finite lamp life, (can you find the one you buy has little life left?) Or by not reporting the status of the lamp no-one worries about it? cheers, Neville Michie ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshtt**ps://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://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-nutshttps://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-nutshttps://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.
Re: [time-nuts] FE-5680A Rb Questions
Chuck Magnus and others will tell you the same reheat the lamp to evaporate the Rb. I have done it also and it puts it right back in the mid range of life. Voltage wise. No way to know if it might plate out quicker with age. The Rb reference were built with a finite life expectation 7 years I think. Maybe 10. So most of the telco ones I have about 7 are at various stages past midlife voltage. The ones I have recovered were down to I think 1.2V reheating put them back at 5-6V or something like that I was quite happy with the results. There are indeed other components that can fail in the RF heater/exciter caps and such in general replaceable. But use the right quality and temperature replacement the ovens hot. Regards Paul. On Fri, Dec 16, 2011 at 8:36 AM, Azelio Boriani azelio.bori...@screen.itwrote: Yes, of course, in that sense: the life must be restored at some time. On Fri, Dec 16, 2011 at 2:29 PM, Chuck Harris cfhar...@erols.com wrote: It has been pretty well shown that the lamp life is effectively infinite. The only thing that happens to shorten an effective useful campaign of the lamp is when the Rb plates out on the lamp envelope, and renders the glass opaque. That problem, however, is easily remedied, by heating the glass until the Rb evaporates, and then allowing it to redistribute to a more desirable position out of the optical path. Disassembly, and a heat gun are all that is necessary. -Chuck Harris Azelio Boriani wrote: I think every Rb has a finite lamp life... On Fri, Dec 16, 2011 at 11:41 AM, Neville Michienamic...@gmail.com wrote: Does the FE-5680A have a similar Rb cell to the LPRO-101? If so do they have finite lamp life, (can you find the one you buy has little life left?) Or by not reporting the status of the lamp no-one worries about it? cheers, Neville Michie ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/ https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshtt**ps://www.febo.com/cgi-bin/** mailman/listinfo/time-nuts 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 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 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. ___ 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] FE-5680A Rb Questions
With mine due to arrive soon, I have some questions. 1. Will it work on 12 volts instead of 15? 2. Is the serial i/o really RS-232 or something else 3. Is there a command list? 4. Which pinout list is correct? -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ 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.
Re: [time-nuts] FE-5680A Rb Questions
On Thu, Dec 15, 2011 at 11:05 AM, Chuck Forsberg WA7KGX N2469R c...@omen.com wrote: 1. Will it work on 12 volts instead of 15? My bet is no as there is an internal regulator that likely needs headroom 2. Is the serial i/o really RS-232 or something else There is a Max rs232 level converter inside so I assume real rs232, not TTL levels 3. Is there a command list? There is a book. Google TECHNICAL MANUAL TM0110-2 Chris Albertson Redondo Beach, California ___ 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.
Re: [time-nuts] FE-5680A Rb Questions
In a message dated 15/12/2011 19:41:58 GMT Standard Time, albertson.ch...@gmail.com writes: On Thu, Dec 15, 2011 at 11:05 AM, Chuck Forsberg WA7KGX N2469R c...@omen.com wrote: 1. Will it work on 12 volts instead of 15? My bet is no as there is an internal regulator that likely needs headroom - I would assume no too, for the same reason, and don't forget that the version in question also needs 5 volts on pin 4. No reason why that shouldn't be provided from a regulator via the 15 volt line though -- 2. Is the serial i/o really RS-232 or something else There is a Max rs232 level converter inside so I assume real rs232, not TTL levels 3. Is there a command list? There is a book. Google TECHNICAL MANUAL TM0110-2 - Real RS232, and a PC port will drive it. It just needs data in and out plus ground. Information in the manual that Chris highlights above, and plenty in the list archives, including a reasonably detailed get you going post from me recently. regards Nigel GM8PZR ___ 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.
Re: [time-nuts] FE-5680A Rb Questions
Chris Albertson wrote: On Thu, Dec 15, 2011 at 11:05 AM, Chuck Forsberg WA7KGX N2469R c...@omen.com wrote: 1. Will it work on 12 volts instead of 15? My bet is no as there is an internal regulator that likely needs headroom 2. Is the serial i/o really RS-232 or something else There is a Max rs232 level converter inside so I assume real rs232, not TTL levels 3. Is there a command list? There is a book. Google TECHNICAL MANUAL TM0110-2 Correct in most ways, but as has been noted that manual states that the count used to offset the frequency (fine tune it) is: 7F FF FF FF = 2,147,483,647= +383 Hz 80 00 00 00 = -2,147,483,647= -383 Hz which would be 5.6e6 counts / Hz or about 1.8e-14 / count. The units reported on here give you about 7e-13 / count or about 142,000 counts / Hz. This is how my unit behaves. Bob S. attachment: smither.vcf___ 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.
