https://www.febo.com/pipermail/time-nuts/2013-December/081788.html
This link talks about CPOM option. Perhaps part of P rubbed off?
I read somewhere, 5V thing is just a cost saving and nothing else. From
memory, I recall it's just a 3 terminal regulator inside. Perhaps that blew???
I recently acquired an FE 5650A 10 MHz standard. So far, I cannot get the
status indictor to lock.
This 5650A has option "CFOM" whatever that means. It appears the 5650A came
in several configurations. I do not see that option listed in the FE
manual. My other 56050A has option 20 and lets me
Hi
I believe the “guess” is that all will be met within a year or three.
Bob
> On May 29, 2019, at 12:22 PM, Dana Whitlow wrote:
>
> Ole,
>
> Is it when all 5 conditions are met, or just any one of them?
>
> Thanks,
>
> Dana
>
>
> On Wed, May 29, 2019 at 11:00 AM Ole Petter Rønningen
>
Hi, Dana
My understanding is that all criteria should be met, but the list might be
refined. Dr. Martin Milton, Director of the BIPM gave a talk on the subject
on this years IFCS/EFTF; https://www.youtube.com/watch?v=Qsgl8AHBU7c
(redefinition
of the second at around 33 minutes, but the whole talk
Ole,
Is it when all 5 conditions are met, or just any one of them?
Thanks,
Dana
On Wed, May 29, 2019 at 11:00 AM Ole Petter Rønningen
wrote:
> As supporting material; BIPM is considering when a redefinition would be
> appropriate:
>
LeoNTP uses short-circuit tolerant LVCMOS driver with 3.3V level output.
> Does the LeoNTP BNC output come up in the last configured state?
Of course it does.
Leo
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As supporting material; BIPM is considering when a redefinition would be
appropriate:
https://www.bipm.org/utils/common/pdf/CGPM-2018/CGPM-2018-Time-2-LD.pdf
And
https://www.bipm.org/utils/en/pdf/CCTF-strategy-document.pdf annex 1 (and a few
other places)
Extract:
The time for a new
Hi
The TBolt is a very unique design. It directly uses code phase information
against the OCXO. The net result is really no different than the “correction
message” approach, but it is a different implementation. Since you can’t
*buy* the guts of a TBolt to strap into a DIY GPSDO, it’s not
On 2019-05-29 14:53, Attila Kinali wrote:
The saw-tooth correction is the error of the PPS signal, as generated by
the hardware, and where it really should be. The clocks of most GPS receivers
are in the order of 20-60MHz and are usually unsteered TCXOs (or even XO for
the cheap ones). Hence the
On Wed, 29 May 2019 14:53:07 +0200
Attila Kinali wrote:
> > 2) I think I understand this. Further I will have to understand what the
> > optimal PLL BW is in light of the OCXO short-term ADEV being potentially
> > better than GPS 1PPS with correction. Perhaps this means the loop BW
> >
On Tue, 28 May 2019 22:56:35 +0200
Mike Cook wrote:
> a. There is no need for a new definition.
There is. Current optical clocks deliver a lower uncertainty than
Cs fountain clocks. Ie the reference we have is less precise than
the measurement tools we have. Hence a redefinition of the second
On Tue, 28 May 2019 18:39:34 + (UTC)
life speed via time-nuts wrote:
> Attila,
> Thanks for taking the time to respond and share your practical experiences in
> this area. Your explanations are very helpful, I have a few more questions
> if you don't mind:
> 1) Would you elaborate on the
I don’t have one of these but I wouldn’t connect anything to anything without
knowing the specs.
I went to their site but could not find any specs on the outputs on the BNC
connector. I should mail them at ord...@uputronics.com for the details.
It could be a simple BNC to DB9 soldering job.
t...@aussec.com said:
>> Alternatively, is there a simpler way to achieve the goal?
> No, you really need a level shifting stage that
> converts the PPS to RS232 levels.
I've been running a PPS from a TBolt directly in to a RS232 without a level
shifter for years without any problems.
In the
Hello Anthony,
Those cables will NOT work. The BNC connectors are 75 Ohms, which will
damage the 50 Ohm connector on the server.
Yes, pin1 is DCD. You might need level shifting, but probably not.
For the cable, just buy a cheap BNC cable and a DE-9 (sometimes
erroneously called DB-9)
Quoting Anthony Dunne :
Firstly would this work?
Yes.
Secondly, my dilemma is the pin-out.
I believe on the DB9 pin 1 is DCD (the actual pulse) and pin 5 is
the ground. Is this correct?
Yes.
Could I use a cable such as this:-
No.
Alternatively, is there a simpler way to achieve the
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