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Posted by Zevi A.
Posted on 03/08/06 10:33
Number of views 31462
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CD R/RW Writing Performances
 

The specifications of Panasonic SW-5582 state that the drive is able to write CD-R discs at 24x and CD-RW discs at 16x. Let us find out how the drive really performs in speed and quality.

Writing Quality with CD-R discs:


For our data writing tests, we simply set up a new compilation of about 702Mb using Nero Burning ROM software. Writing method used is DAO (Disc At Once), and the disc is set up as a non-multisession disc with 'finalize disc" enabled. The screenshot below shows how long it takes to write a disc at the highest speed (24x):

The drive took 4 minutes and 46 seconds to write the disc at 24x.

 

Write Quality:


We will test CD-R discs from different CD-R manufacturers. To really measure the write speed, we used the 'create data CD" function in Nero CD-DVD Speed. The discs were written at the maximum speed that the drive supports. For the quality test, we used K-Probe 2 which is a tool developed by a Lite-On employee. It runs under Windows and works with drives made by Lite-On. Also note that different drives and different reading speeds may affect the results obtained when scanning the discs. We used a Lite-On LTR-40125S drive with firmware ZS0R and scanned the discs at 48X speed.

A written CD-R disc will always have some C1 errors; C1 errors are easily corrected by the drive's error correction capabilities. The next level of errors is C2, while C2 errors could also be corrected by most drive's error correction capabilities; they are not wanted on a good quality disc. A good disc should not contain any C2 errors, and preferably have an average C1 error amount of below 2.0 for the best quality discs, or at least below 10.0 C1 average for good quality discs. After C2 errors, there are only un-correctable errors that will make a disc unusable.

In short, our analysis will be based on these guideline to determine the quality of the burned disc:

CD-R/RW quality scan guideline

Average C1

C2

Quality

2 and lower

0

Best

10 and lower

0

Good

Above 10

exist

Poor

And below are the obtained results:



Brand:

Verbatim '? DataLifePlus (Thanks to Verbatim USA for providing)

Manufacturer:

Mitsubishi Chemicals Corporation

Code:

97m34s23f

Disc Type:

CD-R

Recording Layer:

Dye Type 3: Long Strategy (Cyanine or AZO)

Capacity:

79:59.73 (703MB)

Certified Speed:

52x

Write Speed:

24x (Z-CLV)

Write Time:

4m:43s

C1 Average/Sec:

5.41

C2 Average/Sec:

0.00

Verbatim DataLifePlus CD-R media with its average C1 errors of 5.41 goes in the 'good quality discs" category.



 

Brand:

Fujifilm

Manufacturer:

Taiyo Yuden

Code:

97m24s01f

Disc Type:

CD-R

Recording Layer:

Dye Type 1: Long Strategy (Cyanine, AZO)

Capacity:

79:59.72 (703MB)

Certified Speed:

48x

Write Speed:

24x (Z-CLV)

Write Time:

4m:44s

C1 Average/Sec:

3.07

C2 Average/Sec:

0.0

Media made by Taiyo Yuden with the average C1 errors of 3.07 goes into the group 'good quality discs" category.



Brand:

Maxell (Thanks to Maxell USA for sending us this media)

Manufacturer:

Prodisc

Code:

97m32s19f

Disc Type:

CD-R

Recording Layer:

Dye Type 9: Short Strategy (Phthalocyanine)

Capacity:

79:59.70 (703MB)

Certified Speed:

48x

Write Speed:

24x (Z-CLV)

Write Time:

4m:43s

C1 Average/Sec:

2.44

C2 Average/Sec:

0.0

This Maxell media burns very well and goes into the category 'good quality discs" for its C1 average of 2.44.



Brand:

Memorex (Thanks to Memorex USA for providing)

Manufacturer:

Ritek

Code:

97m15s17f

Disc Type:

CD-R

Recording Layer:

Dye Type 7: Short Strategy (Phthalocyanine)

Capacity:

79:59.70 (703MB)

Certified Speed:

48x

Write Speed:

24x (Z-CLV)

Write Time:

4m:44s

C1 Average/Sec:

4.58

C2 Average/Sec:

0.0

This Memorex media goes into the category 'good quality discs" for its C1 average of 4.58.



Brand:

Sony

Manufacturer:

Sony Corporation

Code:

97m24s16f

Disc Type:

CD-R(B-)

Recording Layer:

Dye Type 6: Short Strategy (Phthalocyanine)

Capacity:

79:59:74 (702.80 MB)

Certified Speed:

48x

Write Speed:

24x (Z-CLV)

Write Time:

4m:43s

C1 Average/Sec:

1.57

C2 Average/Sec:

0.00

Sony media '? An excellent result with C1 average of 1.57.



Brand:

Staples

Manufacturer:

Moser Baer India Limited

Code:

97m17s06f

Disc Type:

CD-R

Recording Layer:

Dye Type 6: Short Strategy (Phthalocyanine)

Capacity:

79:59.74 (703MB)

Certified Speed:

48x

Write Speed:

12x (CLV)

Write Time:

7m:06s

C1 Average/Sec:

7.58

C2 Average/Sec:

0.0

Staples media '? manufactured by Moser Baer India Limited and with C1 average of 7.58 it goes in the 'good quality discs" category.

 

Writing Quality with CD-RW discs:


We will add a few write quality tests with re-writable media. Settings and testing procedures is the same as used earlier in this review, so you may want to go back and read them if you are unsure. All discs used for these tests are new and have not been written to before.


Brand:

Verbatim '? Thanks to Verbatim USA for sending us this media

Manufacturer:

Mitsubishi Chemicals Corporation

Code:

97m34s25f

Disc Type:

Ultra Speed CD-RW 32x

Recording Layer:

Phase Change

Capacity:

74:43.00 (656.40MB)

Certified Speed:

32x

Write Speed:

16x (Z-CLV)

Write Time:

5m:14s

C1 Average/Sec:

1313.00

C2 Average/Sec:

0.01

Very high C1 errors and unwanted C2 errors exist.



Brand:

Memorex '? Thanks to Memorex for providing us this media

Manufacturer:

Infodisc Technology Co., Ltd.

Code:

97m25s31f

Disc Type:

Ultra Speed CD-RW 24x

Recording Layer:

Phase Change

Capacity:

79:59.73 (702.83MB)

Certified Speed:

24x

Write Speed:

12x (CLV)

Write Time:

7m:06s

C1 Average/Sec:

2199.00

C2 Average/Sec:

225.60

C1 errors are extremely high and unwanted C2 errors exist.

 

Summary:

The Panasonic SW-5582 is a good CD-R writer that will write CD-R media with good to excellent results. On the other hand, on all CD-RW media we have tested, the writing quality is poor.

 

Head on to next page and read about DVD-Writing performance and DVD media compatibility…

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Reactions on this item
Burn speeds are the bane of the archive industry. As I read my 20+ year old CD-Rs, I lament the ignorance of a literally new generation unaware of proper archival methodology when it comes to optical media. Speed kills, not only in cars, but in the quest for archival permanence. It's about pit depth, compatibility, and archival quality. But we ARE in a disposable era and lifestyle, and so, as this new generation generally loses their digital footprint, it will be up to technologists to create an idiot proof archival methodology. The carbon atom nano-initiative seems promising, so have faith, temporals!
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