Dr Bruce Griffiths wrote:
> Didier Juges wrote:
>
>> Dr Bruce Griffiths wrote:
>>
>>
>>> Didier
>>>
>>> Alternative GPSDO solution
>>> Divide the 10MHz reference by 32 resync the output to 10MHz with a fast
>>> D flipflop and then divide the D flipflop output by 4 using a 2 bit
>>> swi
Didier Juges wrote:
> Dr Bruce Griffiths wrote:
>
>> Didier
>>
>> Alternative GPSDO solution
>> Divide the 10MHz reference by 32 resync the output to 10MHz with a fast
>> D flipflop and then divide the D flipflop output by 4 using a 2 bit
>> switchtail ring (Johnson) counter.
>> Low pass filte
Didier Juges wrote:
> Dr Bruce Griffiths wrote:
>
>> Didier Juges wrote:
>>
>>
>>
>>
>>
>>> That's the impression I am getting. I do not know if any of the GPSDO
>>> that I have seen described in recent literature take care of this properly.
>>> It seems when the GPS goes nuts, the 1
Didier Juges wrote:
> Dr Bruce Griffiths wrote:
>
>> Didier
>>
>> Alternative GPSDO solution
>> Divide the 10MHz reference by 32 resync the output to 10MHz with a fast
>> D flipflop and then divide the D flipflop output by 4 using a 2 bit
>> switchtail ring (Johnson) counter.
>> Low pass filte
Dr Bruce Griffiths wrote:
> Didier Juges wrote:
>
>
>
>
>> That's the impression I am getting. I do not know if any of the GPSDO
>> that I have seen described in recent literature take care of this properly.
>> It seems when the GPS goes nuts, the 1 PPS goes quite a bit out of
>> normal ran
Dr Bruce Griffiths wrote:
>
> Didier
>
> Alternative GPSDO solution
> Divide the 10MHz reference by 32 resync the output to 10MHz with a fast
> D flipflop and then divide the D flipflop output by 4 using a 2 bit
> switchtail ring (Johnson) counter.
> Low pass filter the outputs of both divide by
Didier Juges wrote:
> That's the impression I am getting. I do not know if any of the GPSDO
> that I have seen described in recent literature take care of this properly.
> It seems when the GPS goes nuts, the 1 PPS goes quite a bit out of
> normal range, so it should not take too much proces
Didier Juges wrote:
> Dr Bruce Griffiths wrote:
>
>
>
>
>> Good timing antennas have built in ceramic or equivalent bandpass
>> filters to minimise the effect of interference.
>> A patch antenna is not as satisfactory as a quadrifilar helix or a choke
>> ring ground plane antenna for accurat
Didier Juges wrote:
> Dr Bruce Griffiths wrote:
>
>
>
>
>> Good timing antennas have built in ceramic or equivalent bandpass
>> filters to minimise the effect of interference.
>> A patch antenna is not as satisfactory as a quadrifilar helix or a choke
>> ring ground plane antenna for accurat
Dr Bruce Griffiths wrote:
> Good timing antennas have built in ceramic or equivalent bandpass
> filters to minimise the effect of interference.
> A patch antenna is not as satisfactory as a quadrifilar helix or a choke
> ring ground plane antenna for accurate timing purposes.
>
> If GPSDO did
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