[time-nuts] Calculating phase jitter from phase noise - appnote by silabs

2012-05-11 Thread Attila Kinali
Moin,

I just stumbled over a nice little summary how to calculate the jitter
of a signal from its phase noise plot by silicon labs:
http://www.silabs.com/Support%20Documents/TechnicalDocs/AN256.pdf

Attila Kinali

-- 
The trouble with you, Shev, is you don't say anything until you've saved
up a whole truckload of damned heavy brick arguments and then you dump
them all out and never look at the bleeding body mangled beneath the heap
-- Tirin, The Dispossessed, U. Le Guin

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Re: [time-nuts] Calculating phase jitter from phase noise - appnote by silabs

2012-05-11 Thread Jim Lux

On 5/11/12 1:51 AM, Attila Kinali wrote:

Moin,

I just stumbled over a nice little summary how to calculate the jitter
of a signal from its phase noise plot by silicon labs:
http://www.silabs.com/Support%20Documents/TechnicalDocs/AN256.pdf

Attila Kinali



and one from Wenzel
http://www.wenzel.com/documents/spread1.htm



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Re: [time-nuts] Calculating phase jitter from phase noise - appnote by silabs

2012-05-11 Thread Azelio Boriani
And one from HP/Agilent (taking into account the colored noise too:

http://cp.literature.agilent.com/litweb/pdf/5990-3108EN.pdf

And one from Fordahl, with the random zero cross consideration:

http://www.metatech.com.tw/doc/appnote-fordahl/e-AN-02-3.pdf

On Fri, May 11, 2012 at 4:00 PM, Jim Lux jim...@earthlink.net wrote:

 On 5/11/12 1:51 AM, Attila Kinali wrote:

 Moin,

 I just stumbled over a nice little summary how to calculate the jitter
 of a signal from its phase noise plot by silicon labs:
 http://www.silabs.com/Support%**20Documents/TechnicalDocs/**AN256.pdfhttp://www.silabs.com/Support%20Documents/TechnicalDocs/AN256.pdf

Attila Kinali


 and one from Wenzel
 http://www.wenzel.com/**documents/spread1.htmhttp://www.wenzel.com/documents/spread1.htm



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Re: [time-nuts] Calculating phase jitter from phase noise - appnote by silabs

2012-05-11 Thread Bob Camp
Hi

Be very careful with all these phase noise to jitter conversions. They make
some assumptions about the noise that are likely true, but may not be. The
gotcha is that a normal noise measurement does not take phase data. Without
the phase data you really can't properly do the reconstruction. You have to
assume that it's random in the phase domain. 

Bob

-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Azelio Boriani
Sent: Friday, May 11, 2012 11:28 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Calculating phase jitter from phase noise - appnote
by silabs

And one from HP/Agilent (taking into account the colored noise too:

http://cp.literature.agilent.com/litweb/pdf/5990-3108EN.pdf

And one from Fordahl, with the random zero cross consideration:

http://www.metatech.com.tw/doc/appnote-fordahl/e-AN-02-3.pdf

On Fri, May 11, 2012 at 4:00 PM, Jim Lux jim...@earthlink.net wrote:

 On 5/11/12 1:51 AM, Attila Kinali wrote:

 Moin,

 I just stumbled over a nice little summary how to calculate the jitter
 of a signal from its phase noise plot by silicon labs:

http://www.silabs.com/Support%**20Documents/TechnicalDocs/**AN256.pdfhttp:/
/www.silabs.com/Support%20Documents/TechnicalDocs/AN256.pdf

Attila Kinali


 and one from Wenzel

http://www.wenzel.com/**documents/spread1.htmhttp://www.wenzel.com/document
s/spread1.htm



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Re: [time-nuts] Calculating phase jitter from phase noise - appnote by silabs

2012-05-11 Thread SAIDJACK
Hi,
 
here is a very nice and easy to use online calculator for doing exactly  
this:
 
_http://jittertime.com/resources/pncalc.shtml_ 
(http://jittertime.com/resources/pncalc.shtml) 
 
bye,
Said
 
 
In a message dated 5/11/2012 09:17:30 Pacific Daylight Time, li...@rtty.us  
writes:

Hi

Be very careful with all these phase noise to jitter  conversions. They make
some assumptions about the noise that are likely  true, but may not be. 
The
gotcha is that a normal noise measurement does  not take phase data. Without
the phase data you really can't properly do  the reconstruction. You have to
assume that it's random in the phase  domain. 

Bob

-Original Message-
From:  time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of  Azelio Boriani
Sent: Friday, May 11, 2012 11:28 AM
To: Discussion of  precise time and frequency measurement
Subject: Re: [time-nuts] Calculating  phase jitter from phase noise - 
appnote
by silabs

And one from  HP/Agilent (taking into account the colored noise  too:

http://cp.literature.agilent.com/litweb/pdf/5990-3108EN.pdf

And  one from Fordahl, with the random zero cross  consideration:

http://www.metatech.com.tw/doc/appnote-fordahl/e-AN-02-3.pdf

On  Fri, May 11, 2012 at 4:00 PM, Jim Lux jim...@earthlink.net  wrote:


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