Asus 40x/12x/48x CD-RW Drive CRW-4012A User Manual download pdf (Page 12)

CRW-4012A User’s Manual

DDSS / DDSS II Design Structure

Double Dynamic Suspension System (DDSS II)

The DDSS II is an enhanced follow up to the DDSS anti-vibration system

developed by ASUS. The DDSS CD-ROM technology is designed to

reduce the vibration generated from spindle rotation of over 8900 rpm of

40X CD-ROM drives. The DDSS II improves this feature by handling up to

over 10,000 rpm of the new 50X drives. In addition, the DDSS II stabilizes

the pick-up head of the drive in both horizontal and vertical directions,

making tracking and focusing even more precise.

Like the DDSS, the DDSS II vibration absoption structure contains a

“dynamic mass” that can absorb the vibration caused by high revolution of

spindle motor. However, the DDSS II moves the dynamic mass to be

suspended to the chassis, thus providing more stability and accuracy

when accessing data from the disc.

The following diagram illustrates the DDSS/DDSS II design structure.

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Asus 40x/12x/48x CD-RW Drive CRW-4012A User Manual Page 12