Dear John, Thank you for such a detailed response. I will certainly look for Ebay opportunities on the models you kindly advised. I had the TAPR unit on my mind for several months but not sure about the way it could behave for these kind of measurements. I see this hobby will last for a long time. Other hobbies I have are amateur radio, seismology, radio and visual astronomy as well as astrophotography. I have seen large amounts of checks being used for hobbies that turn out to be great for learning. Nowadays I make a living out of what amateur radio digital communications taught to me decades ago. That is what hobbies are for me. Time and Frequency will certainly led me to better learning opportunities and a way to enjoy experimenting with the technology that was only a dream during my childhood.
I will take the time to research on the items you kindly mention. Thank you. P.S. And also very important: Should I leave the HP 5065a "on" 24x7? Or do you recommend to treat it like a randomly used Cesium? I have a couple of FE cheap Rubidiums that won't hurt if they fail for disciplining purposes. Regards, Edgardo Molina Dirección IPTEL www.iptel.net.mx T : 55 55 55202444 M : 04455 20501854 Piensa en Bits SA de CV Información anexa: CONFIDENCIALIDAD DE INFORMACION Este mensaje tiene carácter confidencial. Si usted no es el destinarario de este mensaje, le suplicamos se lo notifique al remitente mediante un correo electrónico y que borre el presente mensaje y sus anexos de su computadora sin retener una copia de los mismos. Queda estrictamente prohibido copiar este mensaje o hacer usode el para cualquier propósito o divulgar su en forma parcial o total su contenido. Gracias. NON-DISCLOSURE OF INFORMATION This email is strictly confidential and may also be privileged. If you are not the intended recipient please immediately advise the sender by replying to this e-mail and then deleting the message and its attachments from your computer without keeping a copy. It is strictly forbidden to copy it or use it for any purpose or disclose its contents to any third party. Thank you. On Aug 24, 2012, at 3:53 PM, John Ackermann N8UR <j...@febo.com> wrote: > Hi Eduardo -- > > For longer term measurements (e.g., tau of an hour or more) a very nice and > inexpensive counter is the HP 5334A/B. I haven't looked recently, but in the > past I bought several off eBay for $150 or less. They are fairly modern, > compact (2U high), and don't have a noisy fan. They have 2ns time interval > resolution in single shot mode, have a built-in 100 sample average, and have > GPIB output. > > You can use a Prologix (http://prologix.biz) USB - GPIB converter to talk to > the 5334 from John Miles' TimeLab software. > > For longer measurements, it's usually easiest to use a PPS signal rather than > 5 MHz. There are a number of ways to derive that, but I'll put in a > shameless plug for the TAPR TADD-2 Mini (http://tapr.org/kits_t2-mini.html) > as an inexpensive PPS generator. > > With that set-up and a GPS you will be able to measure the medium-term > stability and aging of your 5065A. > > John > ---- > On 8/24/2012 4:40 PM, Edgardo Molina wrote: >> Dear Chuck, >> >> Thank you for your advise. Could you please kindly give me an example of >> such a GPIB counter with phase measurement? HP model number? My 5065a has >> been running with a beautiful green light for almost 72hrs. Glad to be back >> home and found it warm and stable. >> >> Take care! >> >> Regards, >> >> >> >> Edgardo Molina >> Dirección IPTEL >> >> www.iptel.net.mx >> >> T : 55 55 55202444 >> M : 04455 20501854 >> >> Piensa en Bits SA de CV >> >> >> >> Información anexa: >> >> >> >> >> CONFIDENCIALIDAD DE INFORMACION >> >> Este mensaje tiene carácter confidencial. Si usted no es el destinarario de >> este mensaje, le suplicamos se lo notifique al remitente mediante un correo >> electrónico y que borre el presente mensaje y sus anexos de su computadora >> sin retener una copia de los mismos. Queda estrictamente prohibido copiar >> este mensaje o hacer usode el para cualquier propósito o divulgar su en >> forma parcial o total su contenido. Gracias. >> >> >> NON-DISCLOSURE OF INFORMATION >> >> This email is strictly confidential and may also be privileged. If you are >> not the intended recipient please immediately advise the sender by replying >> to this e-mail and then deleting the message and its attachments from your >> computer without keeping a copy. It is strictly forbidden to copy it or use >> it for any purpose or disclose its contents to any third party. Thank you. >> >> >> >> >> >> On Aug 22, 2012, at 2:03 AM, Chuck Forsberg WA7KGX N2469R <c...@omen.com> >> wrote: >> >>> If it is a really good Rb standard, consider adjusting the >>> standard yourself by measuring the phase over several >>> days once the standard has warmed up and settled down. >>> A GPIB counter with phase measurement is useful for this. >>> >>> -- >>> 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. >> >> _______________________________________________ >> 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.
