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ASUS CRW-5224A 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 technology is designed to reduce the
vibration generated from spindle rotation of over 8900 rpm of CD-RW
drives. The DDSS II improves this feature by handling up to over 10,000
rpm of the new CD-RW 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.
