Re: [time-nuts] Jitter Test on Dividers

2009-09-21 Thread Poul-Henning Kamp
In message <4ab6b76d.1010...@rubidium.dyndns.org>, Magnus Danielson writes: >Seems less likely. I was pondering if the power line frequency was doing >some nice beat frequency with the system... 1250 seconds at 50Hz = 62500 periods. Assume one extra period over 1250 seconds: 62500 + 1 = 62501

[time-nuts] Solartron 7150plus DMM Failure

2009-09-21 Thread GandalfG8
Hi All Apologies to any who may receive multiple copies of this but I thought it worth sending to those lists where I've previously seen mention of this meter. I have now had two identical failures of Schaffner filtered mains sockets on ex-mil 7150plus DMMs, although I'm not suggesting th

Re: [time-nuts] Jitter Test on Dividers

2009-09-21 Thread Magnus Danielson
Poul-Henning Kamp wrote: In message <4ab6b76d.1010...@rubidium.dyndns.org>, Magnus Danielson writes: Seems less likely. I was pondering if the power line frequency was doing some nice beat frequency with the system... 1250 seconds at 50Hz = 62500 periods. Assume one extra period over 1250 s

[time-nuts] I'm all of a dither.

2009-09-21 Thread Joe McElvenney
Hi, A fellow amateur and I have just put together the GPS-based frequency reference published in the "Every day Practical Electronics" issue of April/May 2009 and are both experiencing the same problem. The type-3 phase comparator of the 74HC4046 has both 1-pps and 50kHz DC-coupled inputs designed

Re: [time-nuts] Solartron 7150plus DMM Failure

2009-09-21 Thread Philip Pemberton
gandal...@aol.com wrote: I have now had two identical failures of Schaffner filtered mains sockets on ex-mil 7150plus DMMs, although I'm not suggesting the ex-mil source is particularly relevant. In both cases there has been an internal component failure within the mains socket that caused i

Re: [time-nuts] I'm all of a dither.

2009-09-21 Thread Bruce Griffiths
Joe McElvenney wrote: > Hi, > > A fellow amateur and I have just put together the GPS-based frequency > reference published in the "Every day Practical Electronics" issue of > April/May 2009 and are both experiencing the same problem. The type-3 > phase comparator of the 74HC4046 has both 1-pps and

Re: [time-nuts] I'm all of a dither.

2009-09-21 Thread Bruce Griffiths
Joe McElvenney wrote: > Hi, > > A fellow amateur and I have just put together the GPS-based frequency > reference published in the "Every day Practical Electronics" issue of > April/May 2009 and are both experiencing the same problem. The type-3 > phase comparator of the 74HC4046 has both 1-pps and

Re: [time-nuts] Jitter Test on Dividers

2009-09-21 Thread Brian Kirby
And a FYI - it was 60 hertz power here Magnus Danielson wrote: Poul-Henning Kamp wrote: In message <4ab6b76d.1010...@rubidium.dyndns.org>, Magnus Danielson writes: Seems less likely. I was pondering if the power line frequency was doing some nice beat frequency with the system... 1250

Re: [time-nuts] Jitter Test on Dividers

2009-09-21 Thread Magnus Danielson
Brian Kirby wrote: And a FYI - it was 60 hertz power here Never let flimsy details like facts derail a perfectly good theory. (That's about 13,33 ppm BTW) Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to htt

[time-nuts] HP8660 ALC Question

2009-09-21 Thread Ulrich Bangert
Gentlemen, has anyone of you ever experiend problems with the ALC regulation loop of a HP8660C/D synthesizer that had its origin in a problem with the level detector's reference diode? TIA for your help. Ulrich Bangert www.ulrich-bangert.de Ortholzer Weg 1 27243 Gross Ippener __