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Writing Quality

Jun 17,2002 0

26. Tests before recording

 

Review Pages

1. Introduction
2. Pits and Lands
3. Error Correction - Page 1
4. Error Correction - Page 2
5. Error Correction - Page 3
6. CIRC - Page 1
7. CIRC - Page 2
8. CD Decoding system
9. C1/C2 Errors - Page 1
10. C1/C2 Errors - Page 2
11. EFM - Page 1
12. EFM - Page 2
13. Jitter - Page 1
14. Jitter - Page 2
15. Jitter - Page 3
16. Oscilloscope
17. Jitter at DVD
18. Technologies for Reducing Jitter
19. JVC ENC K2
20. AudioMASTER
21. VariREC
22. TEAC Boost Function
23. Testing Equipement - Page 1
24. Testing Equipement - Page 2
25. Calibration media
26. Tests before recording
27. Tests after recording
28. Atomic Force Microscopy

 

Writing Quality - Page 26

Tests before recording

Not all testing equipment can measure un-written blank media. In general there are three types of tests. For detailed explanation visit Quantized (http://www.quantized.com).

Pre-Groove Integrity Tests

  • Wobble Amplitude
  • Normalized Wobble Amplitude
  • Wobble Carrier To Noise Ratio (Wobble CNR)
  • Locking Frequency Of Wobble (FWOB)
  • Radial Contrast Before Recording (RCb)

Blank CD-R Servo Parameters

  • ATIP Error Rate (ATER)

Blank CD-R HF Tests Parameters

  • Intensity of Land Signal (ILAND)
  • Intensity Of Groove Signal (IGROOVE)
  • Radial Noise (RN)

Below are listed the initial and the explanation of various measurement tests for blank CD-R/RW media:

  • Igb: Signal Level of Groove
  • Ilb: Signal Level of Land
  • RCb: Radial Contrast
  • TEb: Push Pull Amplitude
  • Push-Pull b: 0.1µm Offset Push-Pull
  • RNb: Radial Noise of Push-Pull
  • WNRb: Wobble CNR
  • Iwp-p: Wobble Amplitude
  • NWS: Normalised Wobble Signal
  • Rgb: Reflectivity of Groove
  • Rlb: Reflectivity of Land
  • ATER: ATIP error rate
  • ATBEL: Maximum ATIP Errors
  • ATIP Jitter

 

Review Pages

1. Introduction
2. Pits and Lands
3. Error Correction - Page 1
4. Error Correction - Page 2
5. Error Correction - Page 3
6. CIRC - Page 1
7. CIRC - Page 2
8. CD Decoding system
9. C1/C2 Errors - Page 1
10. C1/C2 Errors - Page 2
11. EFM - Page 1
12. EFM - Page 2
13. Jitter - Page 1
14. Jitter - Page 2
15. Jitter - Page 3
16. Oscilloscope
17. Jitter at DVD
18. Technologies for Reducing Jitter
19. JVC ENC K2
20. AudioMASTER
21. VariREC
22. TEAC Boost Function
23. Testing Equipement - Page 1
24. Testing Equipement - Page 2
25. Calibration media
26. Tests before recording
27. Tests after recording
28. Atomic Force Microscopy

 

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