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| NEC CD-803 |
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| 215,000yen(around the 1982 time) |
The compact disk player of No. 1 which NEC
announced.
In order to realize a compact disk player, five control
circuits, a pickup control circuit, a laser control circuit, a disk
motor-control circuitry, a delivery motor-control circuitry, and a system
control circuitry, are carried.
The coreless DD motor only for a disk is
adopted as a motor.
A pulse-control motor is adopted also as pickup
delivery, and position control of the micra unit of measure is made possible.
16 bitD/A converter which NEC developed is adopted as a digital analog
converter.
The influence of the error and operating temperature resulting
from the variation in an element was corrected quickly, and the low distortion
is realized.
Four kinds of play time windows are possible, and the real
time of the music under play, the real time of the music under present play, the
play time of disk all songs, the residual time of the music under present play, and the residual time of an entire disk can be displayed by pressing the
WAIT-TIME key.
If the auto start organization is built in, it connects
with an optional audio timer and an auto start switchpoint on the back is turned
ON, timer set time can be made to start an automatic performance.
The
remote controller is attached.
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.JPG)
| Form |
Compact disk player |
| Pickup scheme |
GaAlAs semiconductor laser |
| Sampling frequency |
44.1kHz |
| Quantifying bit number |
16-bit linear line |
| The number of channels |
Two channels |
| Frequency characteristic |
5Hz-20kHz±0.5dB |
| Dynamic range |
90dB or more |
| SN ratio |
90dB or more |
| THD |
0.01% or less (5Hz - 20kHz)
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| Channel separation |
70dB or more (5Hz - 20kHz) |
| Wow and flutter |
Below a limit-of-measurement value
(quartz-crystal oscillation precision) |
| Output |
Fixed termination: 1.5V/470 ohm
Variable
termination: 0V - 1.5V/2.5kohm |
| Access time |
An average of 3 seconds |
| Memory functionality |
It is a memory possible to 99 music at a
special-NetWare-program number and a subnumber. |
| Supply voltage |
AC100V, 50Hz/60Hz |
| Power consumption |
48W |
| Dimensions |
The width 430x height 150x depth of 360mm
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| Weight |
12.0kg |
| Adjunct |
Infrared remote controller |
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