High-precision
mechanism featuring VRDS
In our newl
developed Vibration-Free Rigid Disc Clamping System mechanism, the slighty
concave turntable is above the disc which is held against it by upward pressure
exered by a large-diameter disc clamper, for higher stability. This new disc
clamping system, with the disc held tightly between the turnyable which has the
same diameter as the disc and a precisely aligned clamper, corrects any warping or eccentricity of the disc, so that
the microscopic pits are always traced accurately by the center beam of the
laser pickup. Another advantage of the system is that it minimizes any
undesirable vibrations of the disc.
Newly
developed floating suspension system for the ultimate stability.
The optical
system and the mechanism which supports it are the most important parts of any
CD player, and are critical if it is to operate at peak performance. In the CD
Drive Unit, the laser pickup drive system uses a newly developed floating
suspension which completely isolates it from internal resonance, external
vibrations and any influence of external sound pressure, so it can read the
digital signals from the microscopic pits with high precision and extreme
stability.
High-prcision
3-beam linear tacking laser pickup for ultimate tracking ability.
The 3-beam
linear-tracking laser pickup was newly developed to have the lightest possible
weight and excellent rigidity. Together with the newly-developed disc clamipng
system using a large turntable, it gives the drive an extremely precise pit
tracking ability.
High-rigidity
dual-construction chassis
The unit has
the ideal anti-resonance heavy-weight dual construction chassis. As the
shaved-aluminum front panel is combined rigidly with the thick chassis, the
overall construction is solid and has superior non-resonationg characteristics.
Moreover, since this CD Drive Unit does not incorporate the D/A converter
section, it offers extra rigidity; vibrations and mechanical oscillations from
the player cannot interfere with the operation of the D/A converter.
Specifications
Laser Pickup
Type:
Optical 3-beam system
Object lens
Drive System: 2-dimensional parallel
drive
Laser
Type: AlGaAs semiconductor laser
Wavelenght: 780 nm
Pickup Drive
System: Linear-motor drive
Signal
Format
Sampling
Frequency: 44,1 kHz
Quantization
Bits: 16 bits linear/channel
Channel Bit
Rate (Transmission Rate): 4,3218 Mb/sec.
Modulation
Code: Eight-to-Fourteen Modulation (EFM)
Error
Corection System: Cross-Interleave Reed
Solomon Code (CIRC)
Disc
Type: Compact disc
Playing
Time: Approx. 60 min. for 5-inch;
approx. 20 min. for 3-inch
Diameter: 12 cm (5") and 8 cm (3")
Thickness: 1,2 mm
Scaning
Velocity: 1,2 - 1,4 m/sec.
Track
Pitch: 1,6 µm
Audio
Digital
Output Level:
Coaxial
: 0,5Vp-p, 75 ohms
Optical
: -9 dBm
General
Power
Requirements: 120/230 V AC, 50/60 Hz
Power
Consumption: 12 watts
Dimensions
(W x H x D): 225 x 137,5 x 400 mm
(8-7/8" x 5-7/16" x 15-3/4")
Weight: 7 kg (15,5 lbs)
Accessories
Remote
Control Unit: RC-385