C2 errors

vbimport

#1

I have written a TRAXDATA CD(Ritek CD-R Dye Type 7) with 4163b at 16x and I did a scan with my two-years-old Samsung DVD-ROM SD-616Q.
Why do I get C2 errors and no C1 error2 ?

After the scan I get:
General Information
Drive: SAMSUNG DVD-ROM SD-616Q
Firmware: F401
Disc: Data CD
Selected speed: Maximum
C1 errors
Maximum: 0
Average: 0.00
Total: 0
C2 errors
Maximum: 105
Average: 79.94
Total: 356514
Jitter: n/a
Scanning statistics
Number of samples: 4461
Average scanning interval: 1.00 sec
Glitches removed: 0


#2

becouse the drive not return c1 errors…


#3

Is the c2 errors level acceptable or not?
Could the reader be wrong in the reporting?


#4

On every CD disk I can, there’s no C2 error reported, but I never used a Samsung drive for scanning. Mostly Lite-On drives.


#5

I am not quite sure but C2 errors on a data cd are not critical as there is one layer above doing additional error correction, but it may result in slowdowns. On an audio cd or [[r]s|m]vcd i fear the c2 error level is too high. It should be lower I guess as a CD written @16x is not too fast.

Of course the error reporting of that samsung drive may be faulty - you could try to do a “raw reading” of the disc with Nero CD/DVD Speed (I think it can do it) and watch the transfer rate.

EDIT: As soon as I have my new Benq I will test some CDs and let you know what they look like.