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#1
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c1 errors and 'soft errors' question
in my nero cdspeed tool, an audio cd check reveals about 1500 c1 errors
and 0 c2 errors. I downloaded and tried cd/dvd Diagnostic by infinidyne and its analysis says there are 200,000 plus 'soft errors' and no hard errors. How is this to be interpeted -- Phil |
#2
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Without knowing what drive you have and what exact tests you are doing, it's
impossible to say. No 2 drives report the exact same thing as far as CD errors are concerned. Total C1 counts are meaningless, it's the graph itself that matters. Average C1 counts and max values also help interpretation. As to C1, there are no specs for these, and no upper limit has ever been documented that interferes with reading a disc. C2 errors are bad, there should not be any, but again fairly high C2 levels are often tolerated. C1/C2 are speed-relative, the faster you scan the disc the higher the levels will be. Suggest you drop by http://club.cdfreaks.com/ and read up on error testing. "Phil" wrote in message ... in my nero cdspeed tool, an audio cd check reveals about 1500 c1 errors and 0 c2 errors. I downloaded and tried cd/dvd Diagnostic by infinidyne and its analysis says there are 200,000 plus 'soft errors' and no hard errors. How is this to be interpeted -- Phil |
#3
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I'm fairly familiar with everything you say but I would like to know the
correlation between these two diagnostic tools, wherein they are giving large differences in their reports of the correctable errors of the same disk. Dan G posted in Without knowing what drive you have and what exact tests you are doing, it's impossible to say. No 2 drives report the exact same thing as far as CD errors are concerned. Total C1 counts are meaningless, it's the graph itself that matters. Average C1 counts and max values also help interpretation. As to C1, there are no specs for these, and no upper limit has ever been documented that interferes with reading a disc. C2 errors are bad, there should not be any, but again fairly high C2 levels are often tolerated. C1/C2 are speed-relative, the faster you scan the disc the higher the levels will be. Suggest you drop by http://club.cdfreaks.com/ and read up on error testing. "Phil" wrote in message ... in my nero cdspeed tool, an audio cd check reveals about 1500 c1 errors and 0 c2 errors. I downloaded and tried cd/dvd Diagnostic by infinidyne and its analysis says there are 200,000 plus 'soft errors' and no hard errors. How is this to be interpeted -- Phil -- Phil |
#4
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On Mon, 09 May 2005 23:24:18 GMT, Phil wrote:
in my nero cdspeed tool, an audio cd check reveals about 1500 c1 errors and 0 c2 errors. I downloaded and tried cd/dvd Diagnostic by infinidyne and its analysis says there are 200,000 plus 'soft errors' and no hard errors. How is this to be interpeted The two programs must be looking at different things. 1500 C1 errors is about what I'd expect from a normal length disc in good condition when testing with Plextools. However, some people have compared Plextools' test results with Eclipse or Clover stand alone testers and found that Plextools reports fewer errors than the stand alone testers. I'd also suggest trying the same comparison with a data disc rather than an audio disc and let us know what happens. Cheers. James. |
#5
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Dan G wrote:
As to C1, there are no specs for these, and no upper limit has ever been documented that interferes with reading a disc. C2 errors are bad, there should not be any, but again fairly high C2 levels are often tolerated. C1/C2 are speed-relative, the faster you scan the disc the higher the levels will be. The Red Book specifies a maximum BLER of 220 per second averaged over 10 seconds. BLER (BLock Error Rate) indicates the number of data blocks with C1 errors. In the FAQ, see: Subject: [2-43-3] What's a frame? CIRC encoding? How does ECC work? Sixth paragraph ("Errors are noted ..."). There was a nice article he http://www.emedialive.com/EM2000/starrett5.html But it's gone. You can still find it here, though the formatting was a little weird for me in Firefox: http://web.archive.org/web/200310031...starrett5.html -- Send mail to (Andy McFadden) - http://www.fadden.com/ CD-Recordable FAQ - http://www.cdrfaq.org/ CiderPress Apple II archive utility for Windows - http://www.faddensoft.com/ Fight Internet Spam - http://spam.abuse.net/spam/ & http://spamcop.net/ |
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