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The way to record or reproduce on PCM
R e c o r d i n g
Microphones
PCM unit
Digital output
R e p r o d u c t i o n
Video cassette
PCM unit
recorder
Compact and Light, Culmination of Modern Design
ing
U n l i k e t h e general c o n c e p t t h a t PCM a d a p t o r s are b u l k y and
h e a v y , O P T O N I C A ' s R X - 1 is as c o m p a c t as a stereo a m p l i f i e r ,
w e i g h i n g
o n l y
1 5 . 5
t e c h n o l o g y has changed t h e w h o l e c o n c e p t .
Stunning 90dB Dynamic Range
D i g i t a l r e c o r d i n g s y s t e m means v e r y l o w d i s t o r t i o n a n d noise,
r e s u l t i n g in a s t u n n i n g 9 0 d B d y n a m i c r a n g e , t h a n k s t o 1 4 - b i t
q u a n t i z i n g .
Extra High Fidelity Recording and Playback
Because t h e a u d i o signals are c o n v e r t e d i n t o pulse codes f o r
r e c o r d i n g and p l a y b a c k , t h e s o u n d signals are n o t a f f e c t e d b y
r o t a r y m e c h a n i s m s c h a r a c t e r i s t i c t o a n a l o g s y s t e m s . T h e r e s u l t
is
an
e x t r e m e l y
h i g h
b e y o n d a n y p o s s i b i l i t i e s o f t h e a n a l o g s y s t e m .
Accurate, Easy-to-Read LED Level Meter
2 8 L E D level m e t e r o n o n e c h a n n e l p e r m i t s precise r e c o r d i n g
levels.
Easy to Connect to Various Kinds of Equipment
In a d d i t i o n t o P I N j a c k s , t h e u n i t i n c l u d e s c a n n o n c o n n e c t o r s
a n d M t y p e c o n n e c t i n g j a c k s , f o r easy c o n n e c t i o n o f t h e R X - 1
w i t h v a r i o u s k i n d s o f e q u i p m e n t .
Special Control for Precise Adaptability of PCM
Adaptor to Videotape.
Jack for Digital Direct Dubbing.
Other features
*
M i k e m i x i n g .
*
*
H e a d p h o n e j a c k .
Digital output
Video cassette recorder
Audio output
O *<§
° 006 O
O 000 O T * 00
Amplifier-
Speakers
k g .
Sharp's i n n o v a t i v e
s e m i c o n d u c t o r
f i d e l i t y
in
r e c o r d i n g
a n d
G o l d p l a t e d P I N i a c k s .
Blocks of the PCM unit
Low pass
filter
Audio
z_
H
Data Error
check
Data formats
Recording
Signals
Reproduction
V C R
Recorded
tape
Playback waveform of 10 kHz
Cassette t a p e d e c k
p l a y b a c k ,
Playback waveform of silent portion
Cassette t a p e d e c k
Harmonic Distortion
Cassette t a p e d e c k
Wow and flutter
Cassette t a p e d e c k
Clock
generator
Sample
A / D -
Redundancy
and hold
converter
Recording
-|
Video cassette recorder
PLL
Error
D/A-
Memories
correction
converter
Reproduction
Digital
Video
Sample
signal
and hold
[£> o i o o i io] C)
Data
C o r r e c t i o n
Reproduced
(Error)
wave
O p e n reel t a p e d e c k
(50 dB or 300 times magnification on the scope)
O p e n reel t a p e d e c k
O p e n reel t a p e d e c k
O p e n reel t a p e d e c k
T V
generator
Memories
[*
Low pass
filter
Recorded
tape
A u d i o signals
P C M s y s t e m
P C M s y s t e m
P C M s y s t e m
P C M s y s t e m
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