Sony md walkman mz-r50 User Manual
34
Specifications
System
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength:
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
Microphone: stereo mini-jack, 0.22–0.78 mV
Line in: stereo mini-jack, 69–194 mV
Optical (Digital) in: optical (digital) mini-jack
Outputs
Headphones: 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
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
Microphone: stereo mini-jack, 0.22–0.78 mV
Line in: stereo mini-jack, 69–194 mV
Optical (Digital) in: optical (digital) mini-jack
Outputs
Headphones: 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
General
Power requirements
Sony AC Power Adaptor (supplied)
connected at the DC IN 6 V jack:
Sony AC Power Adaptor (supplied)
connected at the DC IN 6 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)
230–240 V AC, 50/60 Hz (UK and Hong
Kong model)
240 V AC, 50/60 Hz (Australia and New
Zealand model)
Lithium ion rechargeable battery LIP-8
(supplied)
Two LR6 (size AA) alkaline batteries (not
supplied)
Battery operation time
See “Battery life” (page 26)
Dimensions
Approx. 109.5
(supplied)
Two LR6 (size AA) alkaline batteries (not
supplied)
Battery operation time
See “Battery life” (page 26)
Dimensions
Approx. 109.5
×
19.7
×
77 mm (w/h/d)
(4
3
/
8
×
25
/
32
×
3
1
/
8
in.)
Mass
Approx. 190 g (6.8 oz) the recorder only
Approx. 240 g (8.5 oz) incl. a recordable MD,
and LIP-8 lithium ion rechargeable battery
Supplied accessories
AC power adaptor (1)
Headphones with a remote control (1)
LIP-8 lithium ion rechargeable battery (1)
Dry battery case (1)
Ear pads (2) (Except for U.S. model)
Carrying pouch (1)
Approx. 190 g (6.8 oz) the recorder only
Approx. 240 g (8.5 oz) incl. a recordable MD,
and LIP-8 lithium ion rechargeable battery
Supplied accessories
AC power adaptor (1)
Headphones with a remote control (1)
LIP-8 lithium ion rechargeable battery (1)
Dry battery case (1)
Ear pads (2) (Except for U.S. model)
Carrying pouch (1)