Accurate 50ppm Crystals - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 4th June 2008, 07:17 AM   #1
diyAudio Member
 
Join Date: May 2001
Location: London UK
Default Accurate 50ppm Crystals

Can someone please point to a source of at least 50ppm 11.2896 crstals? Not XOs. Ideally in UK
  Reply With Quote
Old 4th June 2008, 11:56 AM   #2
gmarsh is offline gmarsh  Canada
diyAudio Member
 
gmarsh's Avatar
 
Join Date: Apr 2004
Location: Halifax, NS, Canada
Digikey UK (uk.digikey.com), part number 300-8429-ND. 30ppm.
  Reply With Quote
Old 4th June 2008, 12:30 PM   #3
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Default Re: Accurate 50ppm Crystals

Quote:
Originally posted by fmak
Can someone please point to a source of at least 50ppm 11.2896 crstals? Not XOs. Ideally in UK
If the crystal will be used in a DAC 1000 ppm is good enough and certainly 200 ppm.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 4th June 2008, 12:37 PM   #4
diyAudio Member
 
Join Date: May 2001
Location: London UK
Default Re: Re: Accurate 50ppm Crystals

Quote:
Originally posted by peranders
If the crystal will be used in a DAC 1000 ppm is good enough and certainly 200 ppm.
No, this prevents narrow pll jitter reduction devices from locking.
  Reply With Quote
Old 4th June 2008, 06:29 PM   #5
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
... so you want to attach a jitter eater but where. Better than 50 ppm seems very unpractical for one thing.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 5th June 2008, 06:39 AM   #6
diyAudio Member
 
Join Date: Jun 2007
Default Re: Re: Re: Accurate 50ppm Crystals

Quote:
Originally posted by fmak


No, this prevents narrow pll jitter reduction devices from locking.
You are assuming that the incoming signal is exactly 11.2896 MHz, which is rarely the case. It is not uncommon for it to be off by 200 ppm or more.
  Reply With Quote
Old 5th June 2008, 03:24 PM   #7
gmarsh is offline gmarsh  Canada
diyAudio Member
 
gmarsh's Avatar
 
Join Date: Apr 2004
Location: Halifax, NS, Canada
If fmak has a DAC with a VCXO-based PLL, and his CD player clock frequency is outside the pullability of the VCXO, then maybe he's putting a 50ppm crystal in the CDP to get around this.

*shrug*
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Who makes the best crystals ? percy Digital Source 18 5th April 2006 02:18 PM
Where there are crystals to buy <10ppm Sabas Digital Source 92 3rd November 2005 04:19 PM
22.5792 MHz crystals (also 26.2144) danville Swap Meet 0 15th June 2004 11:46 PM
where can I buy CD player crystals? jarthel Digital Source 0 3rd May 2002 01:09 PM


New To Site? Need Help?

All times are GMT. The time now is 08:01 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2