Re: [time-nuts] WTS: Efratom PTB-100 Precision Timebase

2018-07-08 Thread Dana Whitlow
Don, I've noticed that in general IEEE retains copyright on most stuff they publish. I've been a member for more than 20 years, and this galls me. For an organization that purports to be for the good of mankind, they seem awfully stingy with the information they gather. But if you do acquire

Re: [time-nuts] WTS: Efratom PTB-100 Precision Timebase

2018-07-08 Thread Don@True-Cal
Thanks Attila, Yes, that is a procedure I know about. The lamp glow is purple and my lamp monitor voltage is 6.36, not great but should be in the working range. The issue I'm trouble shooting right now is the PS transition from supply voltage, 28V in my case, to 17V after lamp ignition is not

Re: [time-nuts] WTS: Efratom PTB-100 Precision Timebase

2018-07-08 Thread jimlux
On 7/8/18 12:09 PM, djl wrote: Greg et.al. IEEE stuff is just too expensive for single purchase. I have found, to my sorrow over 40 odd years, that they also do not contain information, that is, info of actual use, because some other company or person might actually benefit. In other words,

Re: [time-nuts] WTS: Efratom PTB-100 Precision Timebase

2018-07-08 Thread djl
Greg et.al. IEEE stuff is just too expensive for single purchase. I have found, to my sorrow over 40 odd years, that they also do not contain information, that is, info of actual use, because some other company or person might actually benefit. In other words, the papers are markers in the

Re: [time-nuts] WTS: Efratom PTB-100 Precision Timebase

2018-07-08 Thread Gregory Beat via time-nuts
Magnus - When I scan/read the 1984 IEEE document, “Lifetime and Reliability of Rubidium Discharge Lamps for Use in Atomic Frequency Standards” by Aerospace Corp., Efraton-Ball, and EG https://ieeexplore.ieee.org/document/1537723/ The failure of the rubidium lamps used on early NAVSTAR satellites,