Specifications - Sony MD Walkman MZ-R70 Operating Instructions Manual

Specifications

System
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 790 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 80 minutes (MDW-80,
stereo recording)
Maximum 160 minutes (MDW-80,
monaural recording)
Maximum 74 minutes (MDW-74,
stereo recording)
Maximum 148 minutes (MDW-74,
monaural recording)
Revolutions
400 rpm to 1,800 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
68
Frequency response
20 to 20,000 Hz ± 3 dB
Wow and Flutter
Below measurable limit
Inputs
Microphone: stereo mini-jack,
0.35–1.38 mV
Line in: stereo mini-jack, 69–194
mV
Optical (Digital) in: optical (digital)
mini-jack
Outputs
i1: stereo mini-jack, maximum
output level 5 mW + 5 mW, load
impedance 16 ohm
i2: stereo mini-jack, maximum
output level 5 mW + 5 mW, load
impedance 16 ohm
General
Power requirements
Sony AC Power Adaptor (supplied)
connected at the DC IN 3 V jack:
120 V AC, 60 Hz (US model)
230-240 V AC, 50/60 Hz (UK
and Hong Kong model)
240 V AC, 50/60 Hz (Australia
and New Zealand model)
220–230 V AC, 50/60 Hz
(European model)
220 V AC, 50 Hz (China model)
220 V AC, 50 Hz (Argentina
model)
100–240 V AC, 50/60 Hz (Other
models)
Nickel cadmium rechargeable
battery NC-WMAA (supplied)
LR6 (size AA) alkaline battery (not
supplied)