ETA GTII - AudioDev - #2

ETA™ - GT II

Geometrical tester for optical discs

User interface

he easy-to-use, intuitive user interface provides a graphic representation of accuracy for measured geometrical data like eccentricity (distance between center of lead-in and center of inner hole), unroundness (difference between maximum and minimum hole diameter) and layer shift (shift between LO and LI information area of a DVD9) of optical discs or stampers.

he steady increase of optical disc drive speeds places increas­ing burdens on the reader tracking mechanism, where there is an eccentric relationship between the data area and ID for high speed CD-formats, and between the LO/L 1 data areas for bonded discs. High read/write speeds, high data integrity and short Track-Seek- times are compromised if discs exhibit ec­centricity and unroundness.

he ETA-GT II is a compact measurement system for all stages of disc manufacture, and for all disc formats. With the ETA-GT II, all relevant geometrical data can be determined, including the inner hole and the lead-in and lead-out diameter. he disc tray permits measurement of disc eccentricity rela­tive to the inner groove (lead-in) as well as to the outer groove (lead-out).

he easy-to-use, intuitive user interface provides a graphic representation of accuracy for measured geometrical data like eccentricity, unroundness and layer shift of optical discs or stampers.

Power: AC 100-240 V, 50-60 Hz, 250 VA

Dimensions: Width 526 mm, depth 546 mm, height including

monitor 705 mm

Weight: 45 kg

KEY BENEFITS

• Geometrical Tester for all stages of disc manufacture, from stamper verification to molded CD or half discs to bonded DVD

• Evaluation of eccentricity and unroundness

• Layer shift evaluation for dual-layer DVDs

• Evaluation of inner hole, plus inner and outer groove diameter

• Ready for most single layer Blu-Ray disc formats

• DVDR dual-layercapable (optional)

• Adjust directions to compensate the eccentricity

Measurement output: standard parameters:

• Eccentricity (for LO and LI in case of a dual layer disc) in micron

• Unroundness in micron

• Layer shift (for dual layer discs) in micron

• Inner hole diameter in mm (micron resolution)

• Inner and outer groove diameter in mm (micron resolution)

• Adjust directions to compensate the eccentricity in micron with arrow illustration

ETA-unique values (always included):

• Highest precision

• For replica and stampers