[time-nuts] Short term 10MHz source

Magnus Danielson magnus at rubidium.se
Tue Jan 8 19:37:05 UTC 2019


Hmm... and idea.

For some GPSDOs you get a PPS and is "raw" from GPS module and not 
resynthesized from the steered 10 MHz.

Now, if one uses this PPS it would get quite a bit of noise, but if one 
was to measure that noise against the smoothed 10 MHz with a separate 
TIC/TICC one should be able to use the PPS as a transfer oscillator with 
the right rate but get close to the smoothed 10 MHz as stability.

So, it would be neat to be able to have two TIC/TICCs wired up, one for 
the PPS/10 MHz and the other for PPS to DUT and then compensate the 
later measurement with the former through subtraction.

Sure, this can be achieved by so many other ways, but it would be fun to 
see if it pans out when you have the spare TIC/TICC and is able to pull 
data from several in real-time.

Cheers,
Magnus

On 2019-01-08 20:28, Mark Sims wrote:
> Lady Heather also supports the TICC.   The TICC can be the main input "receiver" device and/or an auxiliary input device.  With two TICCs connected you can process four channels of data.
>
> Heather lets you configure the main input device TICC parameters and also has the ability to "tune" the TICC channel offsets, etc.
>
>
> -------------
>
>> The TICC talks to a host computer using ASCII on USB.
> John Miles' TimeLab software can read data directly from it, or you can
> just save the data as a text file with a terminal program
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