Freecom FC-1
8. C1 / C2 Error Measurements
Freecom FC-1 - Page 8
Writing Quality Tests - C1 / C2 Error Measurements
We measured the C1 / C2 error rate on the recorded discs burnt at the maximum supported writing speed for each media. The software we used is UMDoctor Pro and KProbe and the drives for each software was Optorite DD0203 and LiteOn LDW-811S respectively.
The charts below present the resultant C1/C2 error measurement graphs produced when reading various manufacturers media, previously recorded at the indicated speeds with the Freecom FC-1 drive. Just for comparison reasons we have put together both graphs from UMDoctor and KProbe.
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Taiyo Yuden 48x recorded at 52x
Due to the high C2 error, that we had from UMDoctor measurements, we checked the disc with CDSpeed. As we can see, there is a speed drop at the same spot that the C2 error appears. We burnt a second disc from the same manufacturer but the results were the same.
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CMC 48x recorded at 40x
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MAM 48x recorded at 40x
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HiSpace 48x recorded at 40x
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Creation 48x recorded at 52x
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Ritek 48x recorded at 40x
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Maxell 48x recorded at 52x
- Summary
As we can see from the screenshots above there were two cases where C2 errors were reported. We consider this to be a matter of compatibility and not bad writing quality of the drive. However KProbe measurements made things more complicated. The figures we recorded from both applications did not coincide. This was expected, since we are talking about two different chipset, in the reading side. The results from a Sanyo reader (DD0203) are not comparable with those coming up from Mediatek's (LDW-811S).
We believe that Freecom FC-1 with TY media is not a good combination. Perhaps with a new firmware upgrade things might improve.
Below is presented information on the CD-R media used in the error measurement tests.
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Disc
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ID Code
|
Capacity
|
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Taiyo Yuden 48X
|
TaiyoYuden 97m24s01f
|
79:59:72
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CMC 48x
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CMC Magnetics 97m26s26f
|
79:59:71
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MAM 52x
|
Mitsui 97m27s58f
|
79:59:74
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HiSpace 48x
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97m25s07f
|
79:59:00
|
|
Creation 48X
|
Plasmon 97m27s18f
|
79:59:74
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Ritek 48x
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Fuji 97m26s45f
|
79:59:73
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Maxell 48x
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Ritek 97m15s17f
|
79:59:70
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