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18 ASUS CRW-5232AS
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 diagram on the following page illustrates the DDSS/DDSS II design structure.