[time-nuts] My TICC came in the mail yesterday
orin.eman at gmail.com
Sat Feb 25 17:14:04 EST 2017
FWIW, here is a quick test I ran on my TICC, assuming the attachment makes
"TICC base" was a Trimble Thunderbolt reference and PPS.
The reference for the other traces was an FE-5680A with an LTE Lite on ChA
and Trimble PPS on ChB.
The GPS antennas are indoors and entirely sub-optimal. The LTE Lite is in
a Hammond enclosure and using the antenna supplied with the eval kit
sitting on top of a metal file cabinet.
The result seems to be about as expected for the LTE Lite. The Trimble
typically doesn't track many satellites so I'm not expecting great results.
On Fri, Feb 24, 2017 at 11:58 PM, Andrew Rodland <andrew at cleverdomain.org>
> On Fri, Feb 24, 2017 at 7:08 PM, John Ackermann N8UR <jra at febo.com> wrote:
> > Hi Andrew --
> > There seems to be more than a little magic involved in getting sane
> > three-corner measurements. I've gotten best results when the run is long
> > enough to have many data points per tau, and also that results when
> > noise limited tend to go imaginary. Finally, I think things work best
> > the three sources have similar noise processes, e.g., looking at 3x OCXO
> > 3x Rb or whatever.
> Thanks. I'm not even complaining here, like I said, this is more
> visibility than I've had in the past, and the TICC is looking pretty
> good. As for more points, that was just the first 9 or so hours of a
> 24-hour run, which is now completed. At the end of that, it's more
> reasonable: http://i.imgur.com/7v3obqy.png — although I'm certainly
> not putting much faith in anything past 1000s. And the non-hat plot:
> http://i.imgur.com/xWTsqCX.png .
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