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24th March 2009, 06:28 AM
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#22 |
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diyAudio Member
Join Date: Nov 2008
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YOKOHAMA Tire co.,ltd
Hello Extreme_Boky,
YOKOHAMA Tire Co.,LTD headquarters place TOKYO. This is my car tire, that YOKOHAMA DNA S-Drive 225/45,245/45/R18 http://minkara.carview.co.jp/userid/...266/parts.aspx http://minkara.carview.co.jp/userid/...4/profile.aspx |
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24th March 2009, 06:32 AM
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#23 |
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diyAudio Member
Join Date: Dec 2003
Location: Sydney
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OSCON's are good, aren't they...
They can feed the noise from Vcc to the ground (common) plane, and they do excellent job. Now, please consider what will happen if you lower the noise OF THE COMMON (GROUND PLANE) and you keep the OSCONS? This is why I recommended to ground the oscillator to the SACD PCB ground plane with the least amount of noise. Regards, Boky |
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24th March 2009, 06:34 AM
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#24 | |
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diyAudio Member
Join Date: Dec 2003
Location: Sydney
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Re: YOKOHAMA Tire co.,ltd
Quote:
Beautiful car with very nice tires... Cheers, Boky |
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24th March 2009, 07:10 AM
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#26 |
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diyAudio Member
Join Date: Nov 2008
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OS cap Low ESR
SANYO OS-CON is very low ESR and good frequency characteristics.
http://www.edc.sanyo.com/english/pr...n/download.html |
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24th March 2009, 07:17 AM
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#27 | |
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diyAudio Member
Join Date: Dec 2003
Location: Sydney
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Re: XO3 is good C/N but +/-5ppm deviation
Quote:
parts per million deviation is not that important; the important thing to know (or measure if you have the equipment that can do it) is jitter performance at around 10Hz. 5 PPM means that you will either LOOSE or GAIN for example 5 seconds in approximately 11 days' period (Wikipedia), and this is not important for us at all - AS LONG AS THOSE seconds "keep coming" at exactly the same intervals. Boky |
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24th March 2009, 07:19 AM
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#28 |
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diyAudio Member
Join Date: Nov 2008
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This is XO3 schematic
Let's refer to low JITTER good C/N clock schamatic.
(It is different my original clock unit) http://www.lcaudio.com/images/LClock/xo3dias.gif |
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24th March 2009, 07:27 AM
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#29 |
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diyAudio Member
Join Date: Dec 2003
Location: Sydney
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Yes, the amount of jitter at around 10Hz will directly affect the timing of our clock signal, and our ears are very sensitive (actually, our brain!) to these variations.
The lower the power supply noise - the lower the jitter - hence - lower disturbance and more accurate timing of our clock signal. Some prefer sine wave output, some square wave... it is academic...but I am sure many would discuss this topic to the Nth degree. Boky |
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24th March 2009, 07:34 AM
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#30 |
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diyAudio Member
Join Date: Nov 2008
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Let's stop minding clock deviation +/- 1ppm or not.
This is pre-production model for commentator & reputator sound check.
SACD decorder module frequency is 33.868800MHz. But this was 33.868000MHz clock. Because, even if 800Hz (23.62ppm) slipped, people did not notice it. |
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