[time-nuts] Re: Question about GPS 1PPS ADEV

[Markus Kleinhenz]

Hello Matthias,

> Of course curiosity got the better of me. I switched the GPSDO to hold-over 
> and recorded about 4000 seconds of data. Result is attached. BTW I terminated 
> the experiment after the temperature compensation kicked the DAC one LSB down. 
> I am quite pleased with the performance of the OCXO, though. I was not 
> expecting that, it is really nothing special. Not a surplus Chinesium OCXO, 
> but something you can buy for quite reasonable money from Digikey.
>
> So, the bulge is getting a bit more prominent, but it is in no way as 
> prominent as the figure 26 in John Ackermann's paper. 
>
> John, what constellations did you have enabled during the test? Just GPS, or 
> also others? I usually run with GPS and Galileo enabled (and I avoid GLONASS, 
> it messes everything up). Can this make a difference?
>
>
Could you explain further how enabled GLONASS messed things up for you?

Regards,

Markus