[time-nuts] Re: GPS receiver with reference clock input

[Bob Camp]

Hi

Here’s a plot of NRCan data that *is* in the nanosecond range:


\

Hopefully it comes through.

There’s a couple of things on this plot. The first is that you can see the noise. It’s not a super smooth plot. The maser is running at < 1x10^-14, so the plot is pretty flat. 

The other interesting tidbit is the gap in the data right about 16:30. This happens to all The Trimble’s of this same type. It does not show up on other GPS devices. The device is a NetRS so it’s not exactly brand new. These gaps hit every day at about the same time. They have been happening for a month or two at this point.

Since the dropouts don’t seem to impact the timing, I haven’t really dug into what’s going on. 

Bob





-------------- next part --------------
A non-text attachment was scrubbed...
Name: nrcan_plot2.jpeg
Type: image/jpeg
Size: 71208 bytes
Desc: not available
URL: <http://febo.com/pipermail/time-nuts_lists.febo.com/attachments/20230612/d997adfa/attachment.jpeg>