I once did make a token attempt at tweaking the disciplining parameters in
that SRS-10, but seemed to be getting nowhere and gave up on the effort.
Dana
On Wed, Nov 22, 2017 at 8:12 PM, Mark Sims wrote:
> The PRS-10 does have disciplining parameters that you can tweak. But the
> documentation
Seems there is an ISO8601 revision in progress ?
https://www.loc.gov/standards/datetime/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explaine
Turns out is does work - Initially, when I linked them, both boxes had the
standby light go out and the unmodified ref-0 (with no GPS receiver) showed
Fault and No GPS.
So I assumed there was some problem that might be causing them to conflict
over the interface, and unplugged it.
I've tried it a
Hi,
just my two cents on sine wave fitting.
A undamped sine wave is the solution of the difference equation
sig(n+1)=2*cos(w)*sig(n)-sig(n-1)
This is a linear system of equations mapping the sum of the samples n+1 and
n-1 to the sample n. The factor 2*cos(w) is the unknown. The least-squares
so
Hi
I had never realized there was a format for expressing “I think it was 1967 but
it’s
all a bit of a blur”.
Bob
> On Nov 23, 2017, at 4:57 AM, Poul-Henning Kamp wrote:
>
> Seems there is an ISO8601 revision in progress ?
>
> https://www.loc.gov/standards/datetime/
>
> --
> Poul-Henning
Hi
Yes, the “has no GPS” box becomes the active device in a REF0 / REF1 pair.
If a survey is involved, it can take a *long* time for things to sort out.
Bob
> On Nov 23, 2017, at 7:22 AM, Adrian Godwin wrote:
>
> Turns out is does work - Initially, when I linked them, both boxes had the
> sta
Hi
One other side to this:
There are a number of papers out there on this basic technique (ADC frequency
measurement). There are a number of commercial products that do ADEV
and other measurements this way. It might be a good idea to at least mention
them. It would be even better to look at the
In message <4bec82c4-583e-4632-8589-d898cc2bd...@n1k.org>, Bob kb8tq writes:
>I had never realized there was a format for expressing “I think it was 1967
>but it’s
>all a bit of a blur”.
I think that is one of the major reasons for the revision.
--
Poul-Henning Kamp | UNIX sin
HI
> On Nov 23, 2017, at 8:18 AM, Poul-Henning Kamp wrote:
>
>
> In message <4bec82c4-583e-4632-8589-d898cc2bd...@n1k.org>, Bob kb8tq writes:
>
>> I had never realized there was a format for expressing “I think it was 1967
>> but it’s
>> all a bit of a blur”.
>
> I think that is one
Hi,
There is trivial ways to estimate phase and amplitude of a sine using
linear methods. I saw however none of these properly referenced or
described. It would have been good to see those approaches attempted in
parallel on the same data and compare their performance with the
proposed approa
I wonder how much a fitting approach is affected by distortion (especially
harmonic content) in the waveform.
Of course we can always filter the waveform to make it more sinusoidal but
then we are adding L's and C's and their tempcos to the measurement for
sure destroying any femtosecond claims.
The harmonics limit the perfomance if you want to find the frequency of a
given, sampled sinewave with linear methods. Thats at least my finding when
I built a device to measure grid frequency fast and with high accuracy. I
had to use high-Q digital filters for the fundamental. Their slow transient
I believe the phrase "circa 1967" fits the bill pretty well, although
it may fall a little bit short of "...but it’s all a bit of a blur”.
Dana
On Thu, Nov 23, 2017 at 7:18 AM, Poul-Henning Kamp
wrote:
>
> In message <4bec82c4-583e-4632-8589-d898cc2bd...@n1k.org>, Bob kb8tq
> writes:
>
The Next upgrade has touched several subjects we deal with on a dayle
basis. Allow mw to add my thoughts. First we are time nuts trying within our
limits to advance time and frequency generation and measurement with
affordable resources. We are at least a factor four orders of magnitude behin
Well, I ordered one this morning and I am reading the doc I found online.
Please save a set of your boards and if you want to send me some heatsinks,
I’ll mill them for everyone.
Regards,
Jerry
Jerry Hancock
je...@hanler.com
(415) 215-3779
> On Nov 20, 2017, at 12:29 AM, Mark Sims wrote:
Hi, all
I've done some experiments on my 53230A, and I've come across an issue I
think could be worth knowing about.
I have not tested this on other 53230A's - if anyone has a 53230A and some
spare time, I'd be grateful if someone could try to replicate.
In a nutshell, the first frequency measur
So this new revision enables essentially for the encoding of ``ca.''?
Obviously the current revision allows for varying degrees of fixed
chronological granularity levels.
-Ruslan
On Thu, Nov 23, 2017 at 9:01 AM, Dana Whitlow wrote:
> I believe the phrase "circa 1967" fits the bill pretty well, a
17 matches
Mail list logo