//转载请注明出处，
DVD知识库/.3647425，
http://www.dvdfaq.com.cn原文地址:http://www.cdfreaks.com/article/202
Test Disc #2:
The second test disc is a Verbatim DVD-R 4x media from Taiyo Yuden:
--------------------------------------------------------------------------
Unique Disc Identifier : [DVD-R:TYG01]
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Disc & Book Type : [DVD-R] - [DVD-R]
Manufacturer Name : [Taiyo Yuden Co. Ltd.]
Manufacturer ID : [TYG01]
Disc Application Code : [Unrestricted Use : Consumer Purpose]
Recording Speeds : [1x , 2x , 4x]
[6x And Higher Might Not Always Be Detectable]
Blank Disc Capacity : [2,298,496 Sectors = 4,489.3MB = 4.38GB (4.71GB)]
--------------------------------------------------------------------------
** INFO : Hex Dump Of 'Media Code'-Block Listed Below
** INFO : 4-Byte Header Preceding 'Media Code'-Block Discarded
** INFO : Format 0Eh - Pre-Recorded Information In Lead-In
0000 : 01 40 c1 fd 9e d8 52 00 02 86 0d 13 66 78 80 00 .@....R.....fx..
0010 : 03 54 59 47 30 31 00 00 04 00 00 00 00 00 00 00 .TYG01..........
0020 : 05 88 80 00 00 00 01 00 06 08 0f 11 87 78 80 00 .............x..
0030 : 07 88 80 00 00 00 00 00 08 05 16 0d 0f 0b 0b 00 ................
0040 : 09 97 08 0f 0b 00 00 00 0a 00 00 00 00 00 10 00 ................
0050 : 0b 05 1b 13 a8 89 65 00 0c b6 89 88 80 00 00 00 ......e.........
0060 : 0d 00 00 d0 00 00 00 00 00 00 00 00 00 00 00 00 ................
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[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]
--------------------------------------------------------------------------
AudioDev CATS test results:
Disc id: DVD-R VERBATIM
Disc Manufacturer ID: TYG01
Analysis of CATS results:
The only parameters outside of the limits are related to recording: the Aperture Ratio (AR) is too low and the LPP Bloc Error Rate (BLERa) is too high, which means that the pre-pits have been damaged when the disc has been recorded. Likewise, the Wobble Carrier to Noise Ratio (WOCNRa) is slightly too low, meaning that wobble detection is more difficult now that the recorded HF signal is interfering. All in all, these problems are just related to recording and would only matter if for instance we would like to add more data in a second session after this one: for playback, all parameters of the disc match the requirements.
We notice that the PI errors are increasing towards the outside of the disc with one inflection point in the middle of the disc. The shape of this PI errors plot is similar to the one displayed by the DC jitter and the Asymmetry (ASYM), which is the difference of DC offset voltage between the largest and the smallest pits. When the asymmetry increases (in this case towards negative values), it means small and large run lengths are not at the same level, which makes their recognition more difficult. Luckily the asymmetry stays above the low limit (-5%), so the disc should still play ok.
Our home-made test results:
Scanned with KProbe and Lite-On SHOW-1633S
Scanned with CD-speed and Philips DVDR1640P
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
| |
|
Test Interval Length: |
High Accuracy |
|
Test Result |
|
Disc Info: |
CD_SPEED_DATA_TEST_B DVD-R, 4489 MB (CD_SPEED_DATA_TEST_B) TYG01 |
| |
|
| |
Avg |
Max |
Total |
|
|
PIE |
0.09 |
8 |
13095 |
|
|
POF |
- |
- |
0 |
|
| | |
|
Test Duration |
|
0:28:21 |
|
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
|
Test Result |
|
Disc Info: |
CD_SPEED_DATA_TEST_B DVD-R, 4489 MB (CD_SPEED_DATA_TEST_B) |
| |
|
|
|
|
Test Duration |
|
0:28:23 |
|
Summary:
|
Comparison
Results |
Average
PIE
sum 8 |
Max
PIE
sum 8 |
Average
PIF
sum 1 |
Max
PIF
sum 1 |
POF |
|
AudioDev
CATS |
21.3 |
124 |
0 |
5 |
0 |
|
Lite-On
K-Probe |
0.51 |
7 |
0.02 |
2 |
- |
|
Philips
CD-Speed |
1.12 |
7 |
0 |
- |
0 |
|
Plextor
Plextools |
0.09 |
8 |
- |
- |
0 |
CATS vs. drives results:
All tools seem to agree that this is a good disc. However, the CATS reports a increasing PI error rate with one inflexion point at mid-playback, while all drives show a quite constant PI error rate. Once again the PX-712 shows a similar jitter plot to the one from the CATS, but the PI rate stayed flat, while the Philips drive saw a constant (but pretty high) jitter value over the complete disc. As seen in the table, the CATS had overall more problems than the drives to read this disc.
Test Disc #3:
The third test disc is a Philips DVD+R9 DL 2.4x media:
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Unique Disc Identifier : [DVD+R-DL:MKM-001-000]
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Disc & Book Type : [DVD+R DL] - [DVD-ROM]
Manufacturer Name : [Mitsubishi Kagaku Media]
Manufacturer ID : [MKM]
Media Type ID : [001]
Product Revision : [Not Specified]
Disc Application Code : [General Purpose]
Recording Speeds : [1x , 2.4x]
Blank Disc Capacity : [4,173,824 Sectors = 8,152.0MB = 7.96GB (8.55GB)]
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** INFO : Hex Dump Of 'Media Code'-Block Listed Below
** INFO : 4-Byte Header Preceding 'Media Code'-Block Discarded
** INFO : Format 11h (Method 1) - ADIP Information
0000 : e0 0f 32 10 00 03 00 00 00 fc ff ff 00 22 d7 ff ..2.........."..
0010 : 00 00 00 4d 4b 4d 00 00 00 00 00 30 30 31 00 3c ...MKM.....001.<
0020 : 25 25 37 13 02 4d 69 02 4d 69 1f 1f 0a 0a 12 12 %7..Mi.Mi......
0030 : 02 01 01 1f 1f 0a 0a 12 12 02 01 01 00 00 00 00 ................
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[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]
--------------------------------------------------------------------------
AudioDev CATS test results:
Disc id: DVD+R DL PHILIPS
Disc Manufacturer ID: MKM
Analysis of CATS results:
The disc has a few parameters outside of the limits. First, the Reflectivity (R14H) of the first layer is everywhere lower than the standard (min 18%). The Bottom Jitter is consistently above 8% on both layers, with layer 0 being worse than layer 1. Finally, the Dropout Length (DOL) indicates a lack of HF signal on a few locations of the disc. This usually comes from some dusts on some disc areas, which during the burn are left unrecorded because the laser cannot reach the disc. However, although the disc exceeds the black spot limit defined in the DVD-ROM specification (300 um), this will probably be unnoticeable, since drives can handle defects of several millimeters without problem.
Our home-made test results:
Scanned with KProbe and Lite-On SHOW-1633S
Scanned with CD-speed and Philips DVDR1640P
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
| |
|
Test Interval Length: |
High Accuracy |
|
Test Result |
|
Disc Info: |
THREE_KINGS DVD-ROM, 8015 MB (THREE_KINGS) |
| |
|
| |
Avg |
Max |
Total |
|
|
PIE |
43.11 |
930 |
11057042 |
|
|
POF |
- |
- |
0 |
|
| | |
|
Test Duration |
|
0:50:38 |
|
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
|
Test Result |
|
Disc Info: |
THREE_KINGS DVD-ROM, 8015 MB (THREE_KINGS) |
| |
|
|
|
|
Test Duration |
|
1:00:32 |
|
Summary:
|
Comparison
Results |
Average
PIE
sum 8 |
Max
PIE
sum 8 |
Average
PIF
sum 1 |
Max
PIF
sum 1 |
POF |
|
AudioDev
CATS |
33.3 |
107 |
0.4 |
8 |
0 |
|
Lite-On
K-Probe |
106.30 |
379 |
0.69 |
6 |
- |
|
Philips
CD-Speed |
117.46 |
486 |
0.34 |
- |
0 |
|
Plextor
Plextools |
43.11 |
930 |
- |
- |
0 |
CATS vs. drives results:
Both the CATS and our drives showed a big difference for errors between the first and second layer on this disc. And although all exceeding parameters were worse on the first layer, PI errors measured by the CATS are much higher on layer 1. The PI-sum level goes from less than 10 to an average of 250, yet the level of PIF stays very low, which means that the errors are very spread: this suggests that burning on the second layer has been consistently more difficult than burning on the first one, and that was not due to the disc but to the drive.
The jitter results are very surprising too: although the plot from the CATS shows little difference between the first and second layer, both the Philips and Plextor drives report a big jitter increase on layer 1. Moreover, consider the jitter and PI plots obtained with the PX-712 on the end of layer 1: at 75 minutes we see a maximum for the jitter, and this corresponds to a local minimum for the PI errors. This disc shows that not only jitter plots between CATS and drives can be very different, but also that jitter and errors are not always consistent.
Test Disc #4:
The fourth test disc is a XEED DVD-R 4x media:
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Unique Disc Identifier : [DVD-R:MCI4XG01]
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Disc & Book Type : [DVD-R] - [DVD-R]
Manufacturer Name : [Mitsui Toatsu Chemicals Inc.]
Manufacturer ID : [MCI4XG01]
Disc Application Code : [Unrestricted Use : Consumer Purpose]
Recording Speeds : [1x , 2x , 4x]
[6x And Higher Might Not Always Be Detectable]
Blank Disc Capacity : [2,298,496 Sectors = 4,489.3MB = 4.38GB (4.71GB)]
--------------------------------------------------------------------------
** INFO : Hex Dump Of 'Media Code'-Block Listed Below
** INFO : 4-Byte Header Preceding 'Media Code'-Block Discarded
** INFO : Format 0Eh - Pre-Recorded Information In Lead-In
0000 : 01 40 c1 fd 9e d8 52 00 02 85 06 0b 98 88 70 00 .@....R.......p.
0010 : 03 4d 43 49 34 58 47 00 04 30 31 00 00 00 00 00 .MCI4XG..01.....
0020 : 05 88 80 00 00 00 03 00 06 09 0b 11 b8 88 80 00 ................
0030 : 07 88 80 00 00 00 00 00 08 03 14 09 09 01 01 00 ................
0040 : 09 9a 04 0c 0b 40 88 00 0a a4 00 24 00 24 10 00 .....@.....$.$..
0050 : 0b 00 00 00 00 00 00 00 0c 00 00 00 00 00 00 00 ................
0060 : 0d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
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[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]
--------------------------------------------------------------------------
AudioDev CATS test results:
Disc id: DVD-R XEED
Disc Manufacturer ID: MCI4XG01
Analysis of CATS results:
The test was aborted before the end by the CATS, thus we got no plot. The disc shows some awful values: the Bottom Jitter is consistently almost twice as high as the maximum defined by the DVD-ROM standard. Also the Differential Phase Detectors Amplitude (DPD Amp) is slightly too high, which means that the Pulstec drive could get troubles following the track on the disc. The test failed, probably either because the too high jitter caused the Pulstec’s PLL to lose lock or due to a tracking error. What we know for sure is that this disc is so terrible disc from the quality point of view that the CATS have been unable to read it completely, and we will now see how our PC drives handle it.
Our home-made test results:
Scanned with KProbe and Lite-On SHOW-1633S
Scanned with CD-speed and Philips DVDR1640P
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
| |
|
Test Interval Length: |
High Accuracy |
|
Test Result |
|
Disc Info: |
CD_SPEED_DATA_TEST_B DVD-R, 4489 MB (CD_SPEED_DATA_TEST_B) MCI4XG01 |
| |
|
| |
Avg |
Max |
Total |
|
|
PIE |
192.88 |
1641 |
27707760 |
|
|
POF |
- |
- |
4874 |
|
| | |
|
Test Duration |
|
1:01:24 |
|
|
Comparison
Results |
Average
PIE
sum 8 |
Max
PIE
sum 8 |
Average
PIF
sum 1 |
Max
PIF
sum 1 |
POF |
|
AudioDev
CATS |
FAIL |
FAIL |
FAIL |
FAIL |
FAIL |
|
Lite-On
K-Probe |
948.9 |
1410 |
35.43 |
103 |
- |
|
Philips
CD-Speed |
798.32 |
2360* |
1.06 |
- |
44 |
|
Plextor
Plextools |
192.88 |
1641 |
- |
- |
4874 |
CATS vs. drives results:
Both the Lite-ON and the Philips drives were able to read this disc from start to end, despite a huge 17.1% jitter peak measured by the latter drive: these two drives definitely have a very robust PLL. The Plextor drive was on the edge, succeeding to read the disc during the PI/PO test but failing during the Jitter test. In the first case, the Plextor drive also showed more problems to read the disc with a large POF value. So although the CATS can’t extract PI/PO plots from this difficult disc, our drives (especially Lite-ON and Philips) can still handle it.
*: this value of 2360 PIE SUM8 is of course impossible, as there are only 1664 columns in 8 ECC blocks. It corresponds to one of the spikes on the blue PIE graph, which are not due to actual errors but to sampling problems in CDSpeed. This problem is specific to Philips drive and has been fixed in the latest CDSpeed version, but it illustrates the kind of problem which can occur with a consumer drive, which is not specifically designed to measure and report errors.
Test Disc #5:
The fifth test disc is a Norway Disc DVD+R 4x media:
--------------------------------------------------------------------------
Unique Disc Identifier : [DVD+R:NANYA-RJB-000]
--------------------------------------------------------------------------
Disc & Book Type : [DVD+R] - [DVD+R]
Manufacturer Name : [NanYa Plastics Corp.]
Manufacturer ID : [NANYA]
Media Type ID : [RJB]
Product Revision : [Not Specified]
Disc Application Code : [General Purpose]
Recording Speeds : [1x , 2.4x , 4x , 6x-8x]
Blank Disc Capacity : [2,295,104 Sectors = 4,482.6MB = 4.38GB (4.70GB)]
--------------------------------------------------------------------------
** INFO : Hex Dump Of 'Media Code'-Block Listed Below
** INFO : 4-Byte Header Preceding 'Media Code'-Block Discarded
** INFO : Format 11h (Method 1) - ADIP Information
0000 : a1 0f 02 00 00 03 00 00 00 26 05 3f 00 00 00 00 .........&.?....
0010 : 00 00 03 4e 41 4e 59 41 00 00 00 52 4a 42 00 38 ...NANYA...RJB.8
0020 : 23 54 37 15 02 52 6c 02 b4 63 15 15 0b 0a 08 08 #T7..Rl..c......
0030 : 01 19 1e 0c 0c 0c 0d 01 00 00 00 00 00 00 00 00 ................
0040 : 01 00 38 38 02 31 5f 1c 06 2e 23 10 04 1e 1d 01 ..88.1_...#.....
0050 : 00 00 02 31 5f 1c 06 2e 23 10 04 1e 1d 01 00 00 ...1_...#.......
0060 : 02 00 54 70 02 2f 63 67 20 14 0b 0b 01 20 00 00 ..Tp./cg .... ..
0070 : 00 00 02 43 63 67 20 14 0b 0b 01 20 00 00 00 36 ...Ccg .... ...6
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[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]
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AudioDev CATS test results:
Disc id: DVD+R NORWAY DISC
Disc Manufacturer ID: NANYA
Analysis of CATS results:
This is a very bad disc, as shown by the POF errors it causes. The I14/I14H value (ratio between the highest run length amplitude signal and max signal amplitude) is consistently too low, which means that the amplitude of the HF signal is too small for good decoding. Again, the DC jitter and Bottom Jitter are continuously too high, but lower than with disc #3. Furthermore, AudioDev reported that this disc was not totally flat, which probably added vibration and tilt problems during playback.
Our home-made test results:
Scanned with KProbe and Lite-On SHOW-1633S
Scanned with CD-speed and Philips DVDR1640P
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
| |
|
Test Interval Length: |
High Accuracy |
|
Test Result |
|
Disc Info: |
NEW DVD+R, 4481 MB (NEW) NANYA RJB 00 |
| |
|
| |
Avg |
Max |
Total |
|
|
PIE |
34.98 |
1279 |
4963323 |
|
|
POF |
- |
- |
5 |
|
| | |
|
Test Duration |
|
0:34:19 |
|
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
|
Test Result |
|
Disc Info: |
NEW DVD+R, 4481 MB (NEW) |
| |
|
|
|
|
Test Duration |
|
1:07:31 |
|
|
Comparison
Results |
Average
PIE
sum 8 |
Max
PIE
sum 8 |
Average
PIF
sum 1 |
Max
PIF
sum 1 |
POF |
|
AudioDev
CATS |
267.4 |
1224 |
2.9 |
52 |
- |
|
Lite-On
K-Probe |
268 |
1077 |
4.94 |
31 |
- |
|
Philips
CD-Speed |
(67.38) |
(292) |
(0.99) |
- |
(1746) |
|
Plextor
Plextools |
(34.98) |
(1279) |
- |
- |
(5) |
CATS vs. drives results:
All drives had problems with the end of the disc, where we see that the Focus error measured by the CATS suddenly becomes huge: only the CATS and the Lite-ON drive were able to handle the disc until the end without problem. The Philips drive gave up at 3 GB, while the Plextor lasted a bit more. In this case, we have a disc that the CATS can play from start to end while some drives (Philips, Plextor) have problems doing so.
Test Disc #6:
The sixth test disc is a That’s Write! DVD-R media:
--------------------------------------------------------------------------
Unique Disc Identifier : [DVD-R:VANGUARD]
--------------------------------------------------------------------------
Disc & Book Type : [DVD-R] - [DVD-R]
Manufacturer Name : [Vanguard Disc Inc.]
Manufacturer ID : [VANGUARD]
Disc Application Code : [Unrestricted Use : Consumer Purpose]
Recording Speeds : [1x , 2x , 4x]
[6x And Higher Might Not Always Be Detectable]
Blank Disc Capacity : [2,298,496 Sectors = 4,489.3MB = 4.38GB (4.71GB)]
--------------------------------------------------------------------------
** INFO : Hex Dump Of 'Media Code'-Block Listed Below
** INFO : 4-Byte Header Preceding 'Media Code'-Block Discarded
** INFO : Format 0Eh - Pre-Recorded Information In Lead-In
0000 : 01 40 c1 fd 9e d8 52 00 02 f7 0e 0b 77 88 70 00 .@....R.....w.p.
0010 : 03 56 41 4e 47 55 41 00 04 52 44 00 00 00 00 00 .VANGUA..RD.....
0020 : 05 aa a2 22 22 20 01 00 06 0b 0f 12 66 66 80 00 ..."" ......ff..
0030 : 07 88 80 00 00 00 00 00 08 01 1b 0b 0f 08 08 00 ................
0040 : 09 55 09 10 0b 90 88 00 0a 80 88 80 88 80 10 00 .U..............
0050 : 0b 00 00 00 00 00 00 00 0c 00 00 00 00 00 00 00 ................
0060 : 0d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
--------------------------------------------------------------------------
[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]
--------------------------------------------------------------------------
AudioDev CATS test results:
Disc id: DVD-R THAT´S WRITE
Disc Manufacturer ID: VANGUARD
Analysis of CATS results:
This disc has several critical parameters out of the specification limits. At the end of the disc the Bottom Jitter exceeds 19%, which is more than twice the maximum allowed value. The Reflectivity (R14H) is quite low and sometimes just below the minimum value, but this is not much of a problem. On the other hand, the Asymmetry ratio reaches –20, which means that the HF signal is extremely deteriorated. Not only the data are damaged but we see that the Radial Error (Radial2) is increasing a lot at the end of the disc, which means that the drive also has more and more difficulties following the track near the end of the disc. As a result, the PI errors are very high and some POF occur in this region.
Our home-made test results:
Scanned with KProbe and Lite-On SHOW-1633S
Scanned with CD-speed and Philips DVDR1640P
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
| |
|
Test Interval Length: |
High Accuracy |
|
Test Result |
|
Disc Info: |
CD_SPEED_DATA_TEST_B DVD-R, 4488 MB (CD_SPEED_DATA_TEST_B) VANGUARD |
| |
|
| |
Avg |
Max |
Total |
|
|
PIE |
7.10 |
1149 |
992789 |
|
|
POF |
- |
- |
739 |
|
| | |
|
Test Duration |
|
1:19:38 |
|
|
Drive Info |
|
ID:1 PLEXTOR DVDR PX-712A V1.05 (#101824) |
|
Test Settings |
|
Read Speed: |
2X CLV |
|
Test Result |
|
Disc Info: |
CD_SPEED_DATA_TEST_B DVD-R, 4488 MB (CD_SPEED_DATA_TEST_B) |
| |
|
|
|
|
Test Duration |
|
0:30:06 |
|
|
Comparison
Results |
Average
PIE
sum 8 |
Max
PIE
sum 8 |
Average
PIF
sum 1 |
Max
PIF
sum 1 |
POF |
|
AudioDev
CATS |
310.1 |
1664 |
7.7 |
208 |
- |
|
Lite-On
K-Probe |
107.6 |
1353 |
12.72 |
209 |
- |
|
Philips
CD-Speed |
(25.69) |
(164) |
(0.14) |
- |
(8212) |
|
Plextor
Plextools |
(7.1) |
(1149) |
- |
- |
(739) |
CATS vs. drives results:
From all our drives only the Lite-ON was able to successfully complete the scan of this disc. The worse result was obtained by the Philips drive, which gave up after only 2.8 GB. Note that in this case the CATS has been able to keep reading the disc at very high bottom jitter values, which means that the Pulstec drive also has a very good PLL and that the failure of disc #4 was due to another problem. This is another example of disc which can be read by the CATS and not by some drives.
Note on the CATS results that PIE SUM8 reaches 1664 and PIF SUM1 reaches 208, which are the theoretical maximum values : at the same time, we see on the graph that POF goes to 1 and stays there, which means that all ECC blocks are bad, which is perfectly consistent. The ‘209’ reported by KProbe also corresponds to a completely bad ECC block and should be a ‘208’, but was probably caused by a sampling problem. This is a good example of the better measuring accuracy of CATS systems.
//转载请注明出处，
DVD知识库/.3647425，
http://www.dvdfaq.com.cn
