Справочник Пользователя для Sony MDS-JE640

Model Name Using Similar Mechanism

NEW

MD Mechanism Type

MDM-7A

Optical Pick-up Type

KMS-260B/J1N

Canadian Model

AEP Model

UK Model

E Model

US and foreign patents licensed form Dolby Laboratories
Licensing Corporation.

System

MiniDisc digital audio system

Disc

MiniDisc

Laser

Semiconductor laser (

λ = 780 nm) 

Emission duration:  continuous

Laser output 

MAX 44.6 

µW

1)

Laser diode 

Material: GaAlAs

Revolutions (CLV)

400 rpm to 900 rpm 

Error correction 

ACIRC (Advanced Cross Interleave 
Reed Solomon Code)

Sampling frequency 

44.1 kHz

Coding

ATRAC (Adaptive TRansform 
Acoustic Coding)/ATRAC 3

Modulation system

EFM (Eight-to-Fourteen 
Modulation)

Number of channels 

2 stereo channels

Frequency response 

5 to 20,000 Hz 

±0.3 dB

Signal-to-noiseratio 

Over 98 dB during play

 

Wow and flutter  

Below measurable limit

ANALOG IN 

Jack type:  phono
Impedance:  47 k

Ω

Rated input:  500 mVrms 
Minimum input:  125 mVrms

DIGITAL IN

Connector type:  square optical
Impedance:  660 nm (optical wave 
length)

DIGITAL OPTICAL IN 
(AEP, UK, CIS models)

 

 

Connector type:  square optical
Impedance:  660 nm (optical wave 
length)

DIGITAL COAXIAL IN
(AEP, UK, CIS models)

Jack type:  phono
Impedance:  75 

Ω

Rated input:  0.5 Vp-p, 

±20 %

PHONES (MDS-JE640 
only)

Jack type:  stereo phone
Rated output:  28 mW
Load impedance:  32 

Ω

ANALOG OUT

Jack type:  phono
Rated output:  2 Vrms (at 50 
k

Ω)

Load impedance:  over 10 k

Ω

Photo: SILVER