[time-nuts] F9T, was Re: Ublox F9P PPS output

[Bob kb8tq]

Hi

It’s just like the other uBlox modules (and just like the F9T …) the external 
input is a once a second time stamper with an 8 ns resolution (just like the 
+/- 4 ns on the sawtooth ….). One would *guess* they are using the same 
free running / TCXO clock for both the PPS out and the timestamp coming in. 

Bob

> On Feb 13, 2019, at 6:21 AM, Magnus Danielson <magnus at rubidium.se> wrote:
> 
> Hi Bob,
> 
> Do you say that you managed to get a external frequency input?
> 
> Or is it a timestamp input?
> 
> Cheers,
> Magnus
> 
> On 2019-02-13 00:18, Bob kb8tq wrote:
>> Hi
>> 
>> The inability to switch the ext input over to time mode may be why they
>> are still working on the F9T. I have gotten mine to work, darn if I remember
>> how I did it :) I seem to recall it is wired / config’d  someplace odd on the
>> Sparkfun board. (like it measures the pps output maybe ….).
>> 
>> Bob
>> 
>>> On Feb 12, 2019, at 5:19 PM, Mark Sims <holrum at hotmail.com> wrote:
>>> 
>>> Hopefully if Sparkfun does a F9T, they will bring out a pad for TIMEPULSE 2.   On the F9P, I have been unable to change the settings for TIMEPULSE2...  maybe the F9P does not actually support it even though is is mentioned in the docs.   Sparkfun has their SPARKX division that does short runs of boards that are experimental or not mass-market devices... they might do an F9T that way.  Maybe some time-nut suggestions will influence them to do a F9T.
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