OPTONICA
RX-1
PCM Digital Audio Adaptor
The RX-1
unveils a completely new audio era with a wide range
of
features and unique, innovative ideas.
A
Dream
Unit
for Adventurous
Audiophiles
Sharp's advanced digital technology
is
backed
up by
innovative
semiconductor technology. This
has
been combined with
its
sophisticated audio system expertise, well demonstrated
in the
OPTONICA series.
Now, OPTONICA
is
announcing
a new
audio
era
with
the in-
troduction
of a
dream unit
- PCM
digital audio adaptor RX-1.
Throughout
its
continuous, relentless efforts
in
this field,
OPTONICA
has
developed
the
versatile, compact
PCM
adaptor
which
can
easily
be
connected
to any
home video. Featuring
its impressive breakthrough
in
drop-out proofing capability,
the
RX-1 is the
ideal solution
to
"analog" audio barriers that
critical audiophiles have long been confronted with.
The
PCM
(Pulse Code Modulation) system sets audio technol-
ogy
on a
completely
new
course, well beyond conventional
analog audio.
It is the
system which converts analog signals
into digital signals
for
storing
the
data
on the
videotape. First,
sound signals
are
microscopically divided
and
then encoded
into either 1 (presence)
or 0
(absence)
and
recorded onto
videotape. This eliminates noise which could very often
be
mixed with
the
music signals
at the
time
of
recording.
Adaptable
to Any
Type
of
Video
Cassette
Recorder
Having adopted Optimum Control function,
the
RX-1 permits
you
to
search
for the
ideal matching point, best suited
to any
type
of
video cassette recorder,
VHS or
Beta. This means that
the ingenious unit promises
you
spectacular sound quality
anytime, anywhere.
The adaptability level
is
conveniently displayed
on LED
indi-
cators
for
your quick, accurate reference.
OPTONICA's
Unique
Drop-Out
Proof
System
with
99.995%
Perfection
OPTONICA,
by
fully utilizing a sophisticated memory func-
tion,
has
developed a superb drop-out system
for
dutiful,
accurate reproduction
of the
original sound. Necessary data
for drop-out proofing
are
input
at the
time
of
recording. Then
at
the
time
of
plaving, correction
is
done
to
near perfection.
The result
is a
stunning 99.995% correction capability.
The way to record or reproduce on PCM
Digital output
Recording
Audio
z_
Video cassette PCM unit
recorder
° 006 O O
*<§
O
000 O T * 00
Amplifier- Speakers
Blocks
of the PCM
unit
Clock
generator
TV
generator
Sample
and hold
A/D-
converter
Redundancy
Recording
-|
Video cassette recorder
[*
H
PLL
Data
Error
check
Memories
Error
correction
D/A-
converter
Reproduction
Compact
and
Light, Culmination
of
Modern Design-
ing
Unlike the general concept that PCM adaptors are bulky and
heavy, OPTONICA's RX-1 is as compact as a stereo amplifier,
weighing only 15.5 kg. Sharp's innovative semiconductor
technology has changed the whole concept.
Stunning
90dB Dynamic
Range
Digital recording system means very low distortion and noise,
resulting in a stunning 90dB dynamic range, thanks to 14-bit
quantizing.
Extra High Fidelity Recording
and
Playback
Because the audio signals are converted into pulse codes for
recording and playback, the sound signals are not affected by
rotary mechanisms characteristic to analog systems. The result
is an extremely high fidelity in recording and playback,
beyond any possibilities of the analog system.
Accurate,
Easy-to-Read
LED
Level Meter
28 LED level meter on one channel permits precise recording
levels.
Easy
to
Connect
to
Various Kinds
of
Equipment
In addition to PIN jacks, the unit includes cannon connectors
and M type connecting jacks, for easy connection of the RX-1
with various kinds of equipment.
Special Control
for
Precise Adaptability
of PCM
Adaptor
to
Videotape.
Jack
for
Digital Direct Dubbing.
Other features
* Mike mixing. * Gold plated PIN iacks.
* Headphone jack.
Recording
Recorded
tape
[£>
oiooi io] C)
Correction
Audio signals
Playback waveform
of 10 kHz
Cassette
tape deck Open reel tape deck
PCM
system
Playback waveform of silent
portion
(50
dB or
300
times magnification on the scope)
Cassette
tape deck Open reel tape deck PCM system
Harmonic Distortion
Cassette
tape deck
PCM
system
Wow
and flutter
Cassette
tape deck Open reel tape deck
PCM
system
Microphones
PCM unit
Video cassette recorder
Reproduction
Digital output
Audio output
Low pass
filter
Memories
Low pass
filter
Outputs
I
nput
Sample
and hold
Digital
Video
signal
Data
formats
Signals
Reproduction
VCR
Recorded
tape
Reproduced
wave
Data
(Error)
Memories
D/A
Open
reel tape deck
Specifications
RX-1
Power Source:
Dimensions:
Weight:
Recording format:
Transmission channels:
Sampling frequency:
Number of
quantizing bit:
Data
transmission rate:
Error correction
capability:
Crosstalk:
Level variation:
AC220V, 50Hz [AC 100V, 50/60Hz]*
430(W)x 141 (H)x 360(D) mm
15.5 kg
PCM recording in PAL standard
TV signals [NTSC standard]
2 channels
44.100 kHz [44.056 kHz]
14-bit
2.625 Mbps [2.643 Mbps]
99.995%
More than 60dB (1 kHz, 10 kHz)
Below measurability
o
Power Switch
©
PCM Tape Indicator
LED Level Indicator
©
Line Output Level Control
©
Headphone J ack
©
Anti-Digital Dubbing Indicator
MIC Input Jack
©
Line Input Level Control
©
Power Indicator
©
Error Correction Signal
©
Mode (Record/Play) Switch
©
MIC Input Level Control
o
Playback Indicator
Indicators
Error Monitor Switch
©
Optimum Control
©
Record Indicator
©
Optimum Indicators
Headphone (Volume) Control
Bezugsquellennachweis
SHARP
ELECTRONICS
(EUROPE)
GmbH.
SonninstraBe
3, 2000
Hamburg
1, F.R.
Germany
Tel:
(040) 28511
Telex:
2161867 HEEG D
Telegram:
SHARPEUROPA HAMBURG
SHARP
CORPORATION
OSAKA,
JAPAN
CABLE ADDRESS: LABOMET OSAKA
TELEX: 63428 LABOMET A-D
'79 ©SHARP CORP. (8F2E) Printed in Japan
Wow & flutter: Below measurability
Harmonic distortion: 0.03% (1 kHz)
Dynamic range: 90 dB
Reproducing frequency
range:
DC - 20 kHz
Others:
Line input jack
Line output jack
Headphone jack
Video input/output jack
'
Digital signal input/output jack
Dubbing jack
External synchronized input/out-
put jack
*
Note: Information in [ j parentheses is for NTSC
standard.
The manufacturer reserves the right to vary specifica-
tions,
design, or use alternative materials as my be
deemed necessary or desirable at any time, any such
change or variation being of a kind as not to reduce
quality, performance or appearance.
MODEL
RX-1H
OPTONICA
PCM
DIGITAL AUDIO
ADAPTOR
Contents 1
Features . . . . . . 2
Caution 2
Controls and Functions 3 — 4
Playback . .5
Optimum Control .6
Recording 6
Dubbing ....x. ..................... 7
Connections . 8 - 13
Specifications. 14
Troubleshooting 15
Note:
Audio-visual material may consist of copyrighted works which must not recorded
without the authority of the owner of the copyright.
Please refer to relevant law in your country.
OPTONICA
PCM DIGITAL AUDIO ADAPTOR
RX-1 H
CONTENTS
PCM Digital Audio Adaptor
RX-1KPCM
DIGITAL AUDIO ADAPTOR OPTONICA
Congratulations! You are now the owner of the OPTONICA RX-lHPCM digital audso
adaptor. To fully appreciate the benefit of this quality audio product, it is advised that
you read and thoroughly understand this operational manual before using.
FEATURES
1.
Meets EIAJ (Electronics Industries Association of Japan) standard (825 line).
This digital audio adaptor is manufactured to meet the EIAJ standard arranged for
625 line areas and can be used on VHS, Beta, and
U-matic
formats.
2.
Optimum control function
This control function maintains the RX- iHat the optimum playback performance
level when used with any video cassette recorder. It compensates for a minor per-
formance deviation in video cassette recorders.
3. Equipped with professional type connectors
Broadcast standard connectors such as cannon connectors and PL-259 type video
conneci®s are used in addition to popular phono connectors.
CAUTION
A Hint on Setting up the Equipment
1.
Position all equipment for easy operation.
2.
Do not operate the unit in humid, dusty areas or expose the unit to extreme heat.
A temperature of 30°C or below is recommended.
3. Use an appropriate voltage regulator in areas where voltage fluctuation is above
average.
Power Source
The recommended power source for the unit is AC220V. Do not operate the unit except
with AC220V. Otherwise, electrical failures and other hazards will result, including fire
and electric shocks.
Service
There are no user-serviceable parts inside,
authorized dealer for repair.
In case of failure, take the unit to the nearest
Maintenance
Clean the unit with soft cloth and mild detergent. Never apply alcohol, paint thinner,
or other harmful chemicals.
These distillates will smear the casing or remove the paint.
Dew Problem on a video cassette recorder
1.
Do not operate a video cassette recorder in areas where moisture condensation might
occur. Moisture condensation may occur inside the unit after heating a cold room.
2.
Please refer to an owner's manual of the video cassette recorder for further infor-
mation on dew problems.
CONTROLS AND FUNCTIONS
1.
Power switch
Push in the switch to "on" position, and push it in again to "off" position.
2.
Headphone jack
Accepts any headphone with 3-ohm impedance.
3. Power indicator
Lights up
when
the power is "on".
4.
Playback indicator
Lights up when mode switch 1 2 is in "play" position.
5. Record indicator
Lights up when*mode switch 12 is in "record" position.
8. PCM Tape indicator
The lamp indicates the PCM Tape (similar to a video cassette tape) is being played
back.
7. Anti-Digital dubbing indicator
Some PCM Tapes have anti-dubbing signals that interfere with digital dubbing. The
indicator shows the existence of such signals on the tape, and dubbing is therefore
inoperative,
8. frrror correction signal indicators
These show the level of signal correction being made on the prerecorded PCM t.tp<:s.
A "single" lamp will light up when signal correction is made once. If two <«*jna!
corrections are being made, both the "single" and "double" lamps .v--!i light . .)
9. Optimum indicators
The fewer the indicators are on, the better the playback condition when using a
PCM Tape. When several indicators are on, turn the optimum control knob
clockwise or counter-clockwise to obtain the best condition.
10.
LEQ level indicators
Recording or playback levels on each channel are monitored. Level setting differs
from the conventional method. It is recommended that the average input level be set
around\—9dB; never let the "over" indicator light up.
11.
MIC input jack
Accepts low impedance microphones in right and left channels.
12.
Mode (Record/Play) switch
Select either Record or Play mode with this switch.
13.
Error monitor switch (Two-way monitor switch)
Push it to "source" position for monitoring both recording and playback per-
formance by headphones. "Check" position is for monitoring and checking tracking,
optimum control level, or dropouts when using a video cassette recorder.
14.
Headphone volume control
Controls output level for headphones. Variable volume control does not affect
recording level.
15.
Line output level control
Controls playback output of the taped source. Set the control knob to maximum
when using an amplifier. Level indicators show the fixed output, regardless of
output level control operation.
16.
Line input level control
Controls input level from a home stereo system or a tape deck.
17.
MIC
input level control
Controls input level from microphones.
18.
Optimum control
Maintains the digital adaptor at optimum playback condition when used w• th any
video cassette recorder. It compensates a minor performance deviation in -/ki^o
cassette recorders.
19.
Line input terminal
(phono jack)
Connects Record out or Line out terminals of an amplifier. Never use this terminal
and Line input terminal (21) (cannon type connector) simultaneously
1
20. Line output
terminal
(phono jack)
Connects Tape* playback or Line in terminals of an amplifier.
21.
Line input
terminal
(cannon
XLR-3-31
type
unbalanced connector)
Use this terminal for connecting a microphone mixer or other professional audio
equipment. Never use this input terminal and Line input terminal (19) (phono jack)
simultaneously!
The number three pin is a hot wire.
22. Line output
terminal
(cannon
XLR-3-32
type
unbalanced connector)
Use this terminal for connecting Line output of professional type amplifiers.
23.
Digital
input/output
terminal
Use this terminal for connecting another RX-lHdigital adaptor's input,'outout
terminal when digital dubbing is performed by using two RX- llijigitai jttaptors and
two video cassette recorders.
24. Video input
terminal
Use this terminal for connecting the video output terminal of a video cassette
recorder. Never use
this video input
terminal and PL-259 type video input terminal
(26) at the same time!
25.
Video
output
terminal
Use this terminal for connecting the video input terminal of a video cassette recorder.
Never use this terminal and the PL-259 type video output terminal (27) simul-
taneously!
26. Video input
terminal (PL-259
type connector)
Use this terminal for connecting the PL-259
type
video output terminal of a video
cassette recorder. Never use this terminal and an additional video input terminal
(24) simultaneously!
27.
Video
output
terminal (PL-259
type connector)
Use this terminal for connecting the PL-259 type video input terminal of a video
cassette recorder. Never use this terminal and an additional video output terminal
(25) simultaneously!
28.
Dubbing
output
terminal
Use this terminal when dubbing is performed by using this digital adaptor jnd two
video cassette recorders. Connect it to the video input terminal of the recording
video cassette recorder.
29.
External
sync output
terminal
(phono jack)
Connect to the external sync input terminal of a video cassette recorder.
30.
External sync output terminal (PL-259 type)
Connect to the PL 259 type external sync input terminal of a video cassette recorder.
4 -
PLAYBACK
Refer
to the
owner's manual
for the
operation
of a
video cassette recorder.
v
1.
Make connections as illustrated: see diagram [2]—[3J-
2.
Push
"on" the
power switch
{1).
3. Switch
the
mode selector
to
"play" position.
4.
Load
a PCM
tape into
a video
cassette recorder.
5.
Set the
video cassette recorder's tracking control knob
to
auto position,
or to the
center position
if
manually
set.
6. Connect a headphone
to the
headphone jack
(2).
7. Playback
the
video cassette recorder
and set the
error monitor switch (two-way
monitor switch)
to
"check" position.
8. Adjust optimum control
by
monitoring optimum indicators.
9. Obtain maximum tracking control
by
listening
to the
checking signals.
10.
Now, the
tape
Can be
played back anytime.
• During optimum control
or
tracking control, turn down
the
amplifier volume
and set
the monitor switch
to the
"monitor" position.
• Once
the
initial optimum control
and
tracking control
is
adjusted, there
is no
further
adjustment
necesHry as
long
as the
video cassette recorder
is
used.
• Always
use a
reliable video cassette recorder
in
excellent working condition
in
order
to obtain maximum performance from
the
digital adaptor. Always
keep the
video
heads clean.
• When using a prerecorded
PCM
tape, make sure
it
complies with
the PCM
recording
standard.
Error
Monitor
Switch
(Two-way
Monitor
Switch)
Source Position
• Recording
and
playback conditions
are
monitored
by
headphones when
the
switch
is
in "source" position.
• When
the
switch
is in
"check" position,
the
headphones pick
up the
intermittent
signal sound
to
indicate whether
the
optimum control
or
tracking control
is
properly
set.
The
better
the
condition,
the
less audible
the
signal becomes.
Usually,
set the
tracking control
to
"auto" position. When
the
signal sound becomes
quick
and
clearly audible,
the
playback condition
is poor.
Proceed
to set the
tracking
control manually
to
obtain
the
optimum playback condition.
For
manual settings,
follow
the
instructions below:
t. Listen carefully
to the
signal sound. Count a number
of
signals audible within a period
of
five seconds. Turning
of a
tracking control knob will either increase
or
decrease
signal interval.
Set the
knob where
the
least amount
of
signal
is
audibie within
a
period
of
five seconds. Repeat this several times
to
obtain maximum tracking control.
When
the
tracking control knob
is
turned, tracking
is
momentarily disturbed. When
making an
adjustment, wait
until the
tracking
is
stabilized
and no
continuous signal
sound
is heard.
•
The
signal sound
is
only reproduced
by the
headphone terminal
(2) and it
won't
be
reproduced through
the
speakers.
• Every time a video cassette recorder/video cassette tape
is
changed,
be
sure
to
make
tracking control
and
optimum control adjustments.
• When recording, push back
the
switch
to the
"source" position.
OPTIMUM
CONTROL
This control maintains the optimum performance from the digital adaptor even when the
video cassette recorder deviates from normal performance figures.
1.
First, set this knob to the notched "middle" position.
2.
Optimum indicators will light up when a PCM Tape is played back. Less than :-vo
indicators will light up if the playback condition is favourable, w^en rhe ;
condition is poor, several indicators will light up to show that the opt-mum cor:re;
requires readjustment. Adjust the knob so that the fewest tamps w } be si! -i-vr/itrc
• Readjust the knob each time a video cassette recorder/cassette tape is changed.
• Since the performance characteristics of each video cassette recorder may arv
may be cases when two to three indicators light up even if the play sack cord.: cr. 3
very good. All optimum indicators may light up right after a video cassette 'ecjrc:-:' s
hooked to the digital adaptor. This does not indicate the machine in malfuncf
~--r-.
-3.
Just playback tne PCM Tape, and wait until the PCM Tape indicator is on c^fcre
making any adjustment.
RECORDING
Refer to the owner's manual for the operation of a video cassette recorder.
1.
Make connections as illustrated: see diagram
[Tj-[2].
2.
Push "on" the power switch (1).
3. Switch mode selector (12) to "record" position.
4.
Adjust to proper recording level by turning the Line input control (16) knob or MIC
input control (17) knob. Set the level indicator (10) for visual checking of input level.
5. Load the video tape. Clear the tape counter to zero on the video cassette recorder,
Press the record button.
• Since it takes several seconds for the video cassette recorder to be stabilized, .73<t
several seconds before starting to record.
- When the microphone is not used, turn the MIC input control knob to "0" position.
• Always use reliable video cassette recorders in an excellent working conditions to
obtain maximum recording performance from the digital adaptor. Always keep the
video heads clean.
• When recording, PCM Tape (optionally available) is recommended.
• When recording is completed, let the video cassette recorder run for several seconds
before disengaging the record button.
• When recording right after the previously recorded programmes, let the video cassette
recorder run in playback mode for several seconds before pressing the record button.
Proper Recording Level
Set the average recording level at about —9d3.
1.
Check the level indicators and adjust the Line input control (18) or MIC input control
(17)
to set the average recording level as close as possible to -9d3 for 3
normal recording.
2.
Setting of the average recording level at more than — 9dB produces good PCM record-
ing results. But NEVER allow the "Over" level indicator to light up
!
3. Vary the average recording level below or over —9dB depending on the type of record
ing.
• Set peak recording level below the "OVER" level, but do not set it too low; otherwise
a
poor S/N ratio will result.
DUBBING
There are basically three methods-of dubbing using this digital audio adaptor.
Dubbing Can Be Performed Using TV Signals
1.
Push "on" the power switch.
2.
Switch the mode selector to play position?
3. Payback the video cassette recorder, (refer to PLAYBACK section)
4.
Set to record mode on the video cassette recorder, (refer to PLAYBACK section)
5. Dubbing is now in process.
• Adjusting Playback output control (15), Line input control (16), or MIC input control
(17) does not affect receording level.
Analog
Dubbing
1.
Push on the power switch (1).
2 Switch the nlode selector (12) to "play" position on the playback digital
audio adaptor.
3. Switch the mode selector (12) to "record" position on the recording digital audio
adaptor.
4.
Playback the source (playback) video cassette recorder, (refer to PLAYBACK section)
5 Set the record mode on the recording video cassette recorder, (refer to PLAYBACK
section)
6. Now dubbing is in process.
Digital Dubbing
1.
Refer to diagram 16] for connections.
2.
Operation procedure is identical to the analog dubbing.
* There may be certain cases when using the TV signal will not produce good dubbing
results. This is because there are minor performance deviations among video cassette
recorders and video cassette tapes. If this is the case, perform analog or digital
dubbing as explained earlier.
7
or
live
recordings
Diagram
1
s
Recording from a record album. FM
broadcast
or
tape
recorder,
and playback :
:
Diagram 2
Line
input
Microphone
in ixer
Amplifier
VI.
Dh;0 OUT
Connecting with
professional
equipment: Diagram 3;
Line
input
Cannon
con nee tor cable
Lino
out
pu
t
Line
output
Video
input
Video
output
RX-IH
.Power
sou roe
PQ.ver
;jourco
VI
DhlO IN
VTR
VC-6300
Video
input
Video
output
Coaxial
cables provided
TV
signal dubbing connection: - Diagram 4
Analog
dubbing connection:
Diagram
5"
Digital
dubbing connection:
Diagram
_6j
SPECIFICATIONS
*
Specifications are subject to change without notice.
*
The manufacturer reserves the right to vary specifications, design, or use alternative
materials as may be deemed necessary or desirable at any time, any such change or
variation being of a kind as not to reduce the quality, performance or appearance.
Power source: AC 220V, 50Hz
Power consumption: 38 W
Dimensions: 430 (W) x 141 (H) x 360 (D)
Weight: 15,5 kg
Input terminals:
MIC input terminal: Low impedance microphone;
Minimum input level, 3mV (—48dBm) or k>ss.
Line input terminal: Phone connector/cannon connector XLR-3-31
unbalanced;
Minimum input level, iGOmV
'(—18dBm) or less; Input impedance, 47k ohms.
Video input terminal: Phono connector/PL-259 type connector,
Input level, 1.0 10.2 Vp-p {75 ohms termination!.
Output terminals:
Dubbing output
terminal:
Phono connector; Output level,
1.010.2
Vp-p
*
(75 ohms termination); Output impedance,
75 ohms.
Line output terminal: Phone connector/cannon XLR3-32 connector,
unbalanced;
Output level, 5G0mV (-4dSm) or
more for phono connectors, 1.23V
(t-4dBm}
or
more for cannon connectors; 600-ohm loaded
impedance; Matching
loaded
impedance, 10k ohms
or
more for phono connector, 600
ohms
or more
for cannon connectors.
Video output terminal: Phono connector/PL-259 connector. Output level,*
1.0 t 0.2 Vp-p (75 ohms termination}; Output
impedance, 75 ohms.
External sync output
terminal:
Phono connector/PL-259 connectors; TTL level.
Digital input/output terminal:
D-type
subconnector; TTL level.
Auxiliary Video Cassette recorder: Sharp VC-6300 {VHS format); Seta format;
U-matic
format.
•
Frequency response: 2 — 20,000Hz
Dynamic range: 90dB
Harmonic distortion: 0.03%
(1kHz)
Wow & flutter; Below measurable value.
Level variation: Below measurable value.
Crosstalk: More than 60dB.
Error correction capability: 99.995%
Standard:
El AJ standard (525 line)
Recording format: PCM recording in 625 line standard TV signals.
Transmission channels: Two channels.
Sampling frequency: 44.1kHz
Number of quantizing bit: 14-bit
Data
transmission rate: 2.525Mops-
Accessories: Phono type connecting cable; Phono type/PL-259
Type coaxial cable x 2 (75 ohms}; Owner's manual.
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