Hi Andrew,
have you checked the PTP-Messages themselves? There is a field
currentUtcOffset in the PTP announce message used to transfer leapsecond
info. If thats 35, then it seems like a firmware issue.
Regards
Markus
Am 25.06.2022 um 10:30 schrieb Andrew Back via time-nuts:
> Hoping that someon
Hi Dave,
the UBX-NAV-STATUS and UBX-TIM-TP messages should give you a good
indication.
Regards
Markus
> I am using a NEO-6M to provide a PPS signal for an experiment but I
> need to know when it is locked or not.
>
> Does anyone know if there is a way to find out from either the NMEA
> data st
t; If you have a FS740 and measure it’s performance …. you likely will
> take anything the manual says a lot less seriously ….. Their ADEV
> performance in the real world is a bit underwhelming.
>
> Bob
>
>> On May 2, 2022, at 1:42 AM, Markus Kleinhenz via time-nuts
>>
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 perform
with the equations.
>>
>> Any hints?
>>
>> As soon as I see it sort of working in Matlab, I want to test it on my
>> GPSDO. Especially the fact that I have an estimate of the timing
>> error (the
>> GPS module announces this value via a special telegram!
Hi Carsten, Jim,
Am 19.04.2022 um 18:51 schrieb Carsten Andrich:
> Hi Markus, Jim,
>
> thank you for your responses!
>
> On 19.04.22 11:53, Markus Kleinhenz via time-nuts wrote:
>> I believe you will have a hard time finding a COTS solution that fits
>> most of your r
Hello Carsten,
thats quite the set of requirements you got there.
I believe you will have a hard time finding a COTS solution that fits
most of your requirements.
You will likely have to split your signal chain into multiple devices:
1. UBlox ZED-F9T based GPS-Receiver with 1PPS out
2. Somethin
Hi Tobias,
Am 11.04.2022 um 13:33 schrieb Pluess, Tobias via time-nuts:
> Hi Markus,
>
> Thanks for your hints. That's actually what I meant. One could use the
> Kalman filter to "improve" the noise of the 1PPS signal being measured, and
> then use the observed output from the Kalman filter as inp
Hi Tobias,
I was looking into Kalman filters as well, albeit some time ago. But I
think i got some pointers that can put
you on your path.
1. The Kalman filter is an estimator not a controller. It gives you an
estimate of your current system state but no controll law.
2. Time and the Kalman Filt
