I know we discussed this many years ago, probably in context of the HP
Smartclock patent, but I've forgotten all the details.
Say I have a circular buffer of up to several dozen time and offset values.
The intent was to sample at regular intervals but some samples are missing.
Are there simple mic
Pade fit is one of the better tools
Sent from my iPhone
> On Dec 26, 2018, at 10:53 AM, Tim Shoppa wrote:
>
> I know we discussed this many years ago, probably in context of the HP
> Smartclock patent, but I've forgotten all the details.
>
> Say I have a circular buffer of up to several dozen
I see the different forms of deviation measurements and they are all
one-to-one comparisons.
Is there anything to be learned from doing mass data gathering?
For example, if I had a device of relatively good resolution that would
let me
timestamp the events from 100 different clocks, then
Relatively good resolution. Relative to what? :)
Deviation requires you have something to measure against. A “source of truth”.
So what are you measuring deviation from?
From a system administration perspective , I want all my systems to be
consistent. I’ll say that
right == consistently wr
Hi
One simple answer is that it’s not always 1:1 comparisons. The “three corner
hat”
approach is indeed used to compare three devices at one time. There are some
issues with doing that. There are *lots* of papers on where the limits come
from
and what you need to do ( = pick fairly similar cl
> I see the different forms of deviation measurements and they are all
> one-to-one comparisons.
Not all. But, yes, often. UTC itself is a wonderful example of making mutual
measurements of several hundred atomic clocks and establishing a superior
"paper" clock out of them collectively.
But mo
Thanks!
No, I don't really have a specific use case.
And your reply is very helpful in my continuing education!
I had wondered how to do something like this.
I always got stuck on how to know which signal came from which clock.
But it came up again in my mind when I was watching a waterfall d
t...@leapsecond.com said:
> But most people have only one counter (one internal or external timebase
> reference) and one clock to be measured. So the measurements are one-to-one.
> If you have more references or more clocks, you're welcome to combine 2, or
> 3, or as many as you want. It gets co
The other issue is application priority in windows. Here’s an example. I have
a timer running at .75 seconds in Visual Basic. To the left is normal priority
and to the right I set the application to real time priority in device manager.
I then calculated the time between timer interrupts. I
It looks like the image I sent got trimmed off. Did I do something wrong?
Regards,
Jerry
> On Dec 26, 2018, at 4:21 PM, Jerry Hancock wrote:
>
> The other issue is application priority in windows. Here’s an example. I
> have a timer running at .75 seconds in Visual Basic. To the left is
In message <20181226234228.b84f2406...@ip-64-139-1-69.sjc.megapath.net>, Hal
Murray writes:
>
>t...@leapsecond.com said:
>> But most people have only one counter (one internal or external timebase
>> reference) and one clock to be measured. So the measurements are one-to-one.
>> If you ha
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