Re: [time-nuts] Motion effects on accuracy of GPS pps

2010-06-30 Thread Daniel Davson
Thanks Didier, There's also some useful information on the subject here: http://www.greenrayindustries.com/accsens_tb3.html Regards, Dan Didier Juges wrote: From memory, I believe tvb did some experiments with an OCXO or Rb measuring AVAR while flipping the oscillator upside down (+/-

Re: [time-nuts] Scientists measure shortest ever time interval

2010-06-30 Thread Raj
Thanks Mike. I was wondering myself Doc as how they did it. I was skeptical when a friend mentioned it. Raj At 30-06-10, you wrote: details at http://www.attoworld.de/ On Tue, Jun 29, 2010 at 12:14 PM, NE8S n...@earthlink.net wrote: Greetings, Raj, Many thanks for the reference that you

Re: [time-nuts] yet another GPSDO design, or so

2010-06-30 Thread Bruce Griffiths
Chris All the details are in the article: http://www.edn.com/contents/images/6607197.pdf However it would be best to read the article posted by Bob Camp first: Bruce Chris Stake wrote: Hi Bruce, This sounds like a promising idea, please could you expand on the synchronous filter technique?

Re: [time-nuts] yet another GPSDO design, or so

2010-06-30 Thread Bruce Griffiths
Here's a link to a pdf version of the synchronously filtered low ripple pwm dac: http://www.edn.com/contents/images/6553625.pdf Bruce Bruce Griffiths wrote: Chris All the details are in the article: http://www.edn.com/contents/images/6607197.pdf However it would be best to read the article

Re: [time-nuts] Scientists measure shortest ever time interval

2010-06-30 Thread Magnus Danielson
On 06/30/2010 10:03 AM, Raj wrote: Thanks Mike. I was wondering myself Doc as how they did it. I was skeptical when a friend mentioned it. The quick check of their article didn't give me much info... but I was tired and somewhat drunk, so it may have played into it. It you have a

Re: [time-nuts] yet another GPSDO design, or so

2010-06-30 Thread Chris Stake
Ah, now I get the basic idea. I'll need to think about it for a while. Many thanks for the links. Chris Stake -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bruce Griffiths Sent: 30 June 2010 09:08 To: Discussion of precise time and

Re: [time-nuts] hp10811-60111 on ebay

2010-06-30 Thread Steve Rooke
On 30 June 2010 02:46, Attila Kinali att...@kinali.ch wrote: That would be the sort of gadget which would allow you to compare what ocxo devices you have. If you have a dedicated spectrum analyser that would allow you to look directly at phase-nose. There are a number of ways to determine