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