Re: [time-nuts] how many seconds out does GPS discipline being to improve Rubidium stability?

2017-02-12 Thread gkk gb
> > things so there is no simple number there). A very normal quartz based > > GPSDO might be a fine reference for your test. > > > > How much shorter are the other tests? Is ADEV at 1,000 seconds even of > > interest? If the answer is < 1,000 seconds a > > Rb

Re: [time-nuts] how many seconds out does GPS discipline being to improve Rubidium stability?

2017-02-11 Thread gkk gb
as a reference between 0.1 and 100 seconds, for example? > > On February 11, 2017 at 6:29 AM Bob Camp wrote: > > Hi > > Backing up a bit here. > > > > > > On Feb 10, 2017, at 7:35 PM, gkk gb wrote: > > > >

[time-nuts] how many seconds out does GPS discipline being to improve Rubidium stability?

2017-02-10 Thread gkk gb
Hello experts, I need a Rubidium frequency reference for my company, and wonder if I also need to GPS discipline it. I characterize crystal-based OCXOs for ADEV, MTIE, and TDEV, and my longest measurement time is 100,000 seconds (28 hours). I'm looking at this graph from SRS for PRS10, htt