Time track with Rigol DSO

[Winfield Hill]

John Larkin wrote...

Winfield Hill wrote:
John Larkin wrote...

https://www.dropbox.com/sh/lgsbt8qaftj6sdq/AAAA0tfZUDksN1BzKQgtJjaNa?dl=0

Thanks John, I saved the images. Should come in useful!

There is a thing that I call actual or critical setup time, which is
the actual time between D and CLK where the output transition happens,
or gets flakey or metastable. That can be positive or negative for
various parts. It is seldom specified. The data sheet required
setup/hold times presumably straddle that critical setup time.

Yes, we discuss this in AoE3, and have metastability
scope measurements on pages 432 to 734.


--
Thanks,
- Win

 

[John Larkin]

On 30 Oct 2019 14:26:13 -0700, Winfield Hill <winfieldhill@yahoo.com>
wrote:

John Larkin wrote...

Winfield Hill wrote:
John Larkin wrote...

https://www.dropbox.com/sh/lgsbt8qaftj6sdq/AAAA0tfZUDksN1BzKQgtJjaNa?dl=0

Thanks John, I saved the images. Should come in useful!

There is a thing that I call actual or critical setup time, which is
the actual time between D and CLK where the output transition happens,
or gets flakey or metastable. That can be positive or negative for
various parts. It is seldom specified. The data sheet required
setup/hold times presumably straddle that critical setup time.

Yes, we discuss this in AoE3, and have metastability
scope measurements on pages 432 to 734.

Some parts increase their apparent prop delay when they go metastable.
Some oscillate for a while. LS logic was famous for oscillating for
microseconds if teased just right. Some boards would make an
occasional click on a nearby FM radio every time an LS flop went
metastable.

There is a diabolical feedback circuit, in some app note, that forces
a flop into its metastable zone.

This is a GigaComm NB7V52 cml flop, with CLK sweeping across the
critical setup zone with femtosecond resolution.

https://www.dropbox.com/s/1i2yz7otty94o9l/NB7_Jitter_1.jpg?raw=1

https://www.dropbox.com/s/qahpb8uh1xr53vj/NB7_Steps.jpg?raw=1

Equivalent aperture jitter is around 50 fs RMS. The test setup into
the flop could well be dominating that data.

Agent spell check thinks femtosecond should be demitasse. A very small
amount of time, I guess.

--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Phil Allison]

John Larkin wrote:

------------------

Or suck out waveforms and process externally.

RMS is usually linear on duty cycle.



** Oh dear - more wrong advice from he who must not be doubted.


Oh, don't be constantly obnoxious.

** You have a world patent on being obnoxious - shithead.

FYI to all,

JL posts many dumb mistakes, sometimes over and over even after being corrected.

However, he plus the other Stooges try to correct ME for posting simple facts.

Big shame they all suck at simple audio circuit analysis problems.

So much so they did not even TRY for fear of failure.

Dimitrij and Bill both got close or in one case spot on.

I meant power.

** Of course you did.

And there is nothing wrong with mS for milliseconds.

Fuck Win, the disingenuous pedant.



...... Phil

 

[John Larkin]

On Wed, 30 Oct 2019 16:19:54 -0700 (PDT), Phil Allison
<pallison49@gmail.com> wrote:

John Larkin wrote:

------------------


Or suck out waveforms and process externally.

RMS is usually linear on duty cycle.



** Oh dear - more wrong advice from he who must not be doubted.


Oh, don't be constantly obnoxious.



** You have a world patent on being obnoxious - shithead.

FYI to all,

JL posts many dumb mistakes, sometimes over and over even after being corrected.

However, he plus the other Stooges try to correct ME for posting simple facts.

Big shame they all suck at simple audio circuit analysis problems.

So much so they did not even TRY for fear of failure.

Dimitrij and Bill both got close or in one case spot on.



I meant power.


** Of course you did.

And there is nothing wrong with mS for milliseconds.

Fuck Win, the disingenuous pedant.



..... Phil

Prune it is.

--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Phil Allison]

John Larkin is a Fucking Asshole wrote:

-------------------------------------

Or suck out waveforms and process externally.

RMS is usually linear on duty cycle.



** Oh dear - more wrong advice from he who must not be doubted.


Oh, don't be constantly obnoxious.



** You have a world patent on being obnoxious - shithead.

FYI to all,

JL posts many dumb mistakes, sometimes over and over even after being corrected.

However, he plus the other Stooges try to correct ME for posting simple facts.

Big shame they all suck at simple audio circuit analysis problems.

So much so they did not even TRY for fear of failure.

Dimitrij and Bill both got close or in one case spot on.



I meant power.


** Of course you did.

And there is nothing wrong with mS for milliseconds.

Fuck Win, the disingenuous pedant.




Prune it is.

** Spoken just like the truly malicious cunt this autistic pig makes no bones about being.



...... Phil

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[Phil Allison]

Winfield Hill is Nasty Pedantic IDIOT wrote:

--------------------------------------------

Phil Allison wrote...

And there is nothing wrong with mS for milliseconds.


NIST Reference on Units, International System of Units (SI)

time second s
electric conductance siemens S

** So fucking what ?


Abbreviations "mS" & "uS" are widely used on past and current instrumentation.

Usage proves validity while ever there is no ambiguity.

Only an fuckwit, anally retentive, autistic nut case argues this absurd way.

Like nasty Stooge number three, Winfield Hill.

Fuck you.



..... Phil

 

[Winfield Hill]

Phil Allison wrote...

And there is nothing wrong with mS for milliseconds.

NIST Reference on Units, International System of Units (SI)

time second s
electric conductance siemens S

"The 14th General Conference on Weights and Measures approved
the addition of the siemens as a derived unit in 1971."

That was 48 years ago, 1.5E9 seconds ago. I'm sorry, Phil,
but it's really far past time for you to make the change.


--
Thanks,
- Win

 

[Winfield Hill]

Phil, do you use cycles per second, or Hertz?


--
Thanks,
- Win

 

[Phil Allison]

Winfield Hill is a Total Shit Head wrote:

-------------------------------------------


** Not ONE single thing in response to my regularly exposing his horrible smartarse mindset, blatant lying, bullying and wild bullshitting.

Stooge number two is a born shit.

And the fool can't analyse simple audio circuits.

Same as JL and same for Phil H too.

All bluster, bullshit and hot air.




..... Phil