32
Specifications
System
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 780 nm
Emission duration: continuous
Laser output: less than 44.6 µW
(This output is the value measured at a
distance of 200 mm from the lens surface on
the optical pick-up block with 7 mm
aperture.)
Recording and playback time
Maximum 74 minutes (MDW-74, stereo
recording)
Maximum 148 minutes (MDW-74, monaural
recording)
Revolutions
400 rpm to 900 rpm (CLV)
Error correction
Advanced Cross Interleave Reed Solomon
Code (ACIRC)
Sampling frequency
44.1 kHz
Sampling rate converter
Input: 32 kHz/44.1 kHz/48 kHz
Coding
Adaptive TRansform Acoustic Coding
(ATRAC)
Modulation system
EFM (Eight to Fourteen Modulation)
Number of channels
2 stereo channels
1 monaural channel
Frequency response
20 to 20,000 Hz ± 3 dB
Wow and Flutter
Below measurable limit
Inputs
MIC (PLUG IN POWER): stereo mini-jack,
0.35–1.38 mV
(OPTICAL) LINE IN: stereo mini-jack with
optical (digital) in
•Line in: 69–194 mV
•Optical (digital) in: wave length 660 nm
Outputs
PHONES/REMOTE: stereo mini-jack,
maximum output level 5 mW+ 5 mW, load
impedance 16 ohm
LINE OUT: stereo mini-jack, 194 mV, load
impedance 10 kilohm or greater
General
Power requirements
Sony AC Power Adaptor (supplied)
connected at the DC IN 4.5 V jack:
120 V AC, 60 Hz (US model)
220–230 V AC, 50/60 Hz (European
model)
230–240 V AC, 50 Hz (UK model)
240 V AC, 50 Hz (Australia and New
Zealand model)
Two nickel-cadmium rechargeable batteries
NC-AA (supplied)
Two LR6 (size AA) alkaline batteries (not
supplied)
Battery operation time
See “Battery life” (page 24)
Dimensions
Approx. 116.8 x 18.5 x 86.1 mm (w/h/d)
(4
5
/8 x
3
/4 x 3
1
/2 in.)
Mass
Approx. 160 g (5.6 oz) the recorder only
Approx. 220 g (7.8 oz) incl. a recordable MD,
and two NC-AA nickel-cadmium
rechargeable batteries
Supplied accessories
Optical cable (1)
AC power adaptor (1)
Headphones with a remote control (1)
NC-AA nickel-cadmium rechargeable
batteries (2)
Rechargeable battery carrying case (1)
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