Sharp Optonica RX-1 User manual

OPTONICA
RX-1
PCM Digital Audio Adaptor

TheRX-1 unveilsa completelynewaudioerawitha widerange
of featuresandunique,innovativeideas.
A Dream Unit forAdventurous
Audiophiles
Sharp'sadvanceddigitaltechnology is backed upby innovative
semiconductortechnology.This has beencombinedwith its
sophisticatedaudiosystemexpertise,welldemonstrated inthe
OPTONICAseries.
Now,OPTONICA is announcing a new audio era with thein-
troduction ofa dreamunit - PCM digitalaudioadaptorRX-1.
Throughout its continuous,relentlessefforts in thisfield,
OPTONICA has developed the versatile,compact PCM adaptor
which can easily be connected toany homevideo.Featuring
itsimpressivebreakthrough in drop-outproofingcapability,
the RX-1isthe idealsolution to "analog"audiobarriersthat
criticalaudiophileshavelongbeenconfrontedwith.
The PCM (PulseCodeModulation)systemsetsaudiotechnol-
ogy ona completely new course,wellbeyondconventional
analogaudio. Itisthe systemwhichconvertsanalogsignals
intodigitalsignals for storing the data onthe videotape.First,
soundsignals are microscopicallydivided and thenencoded
intoeither 1 (presence) or0 (absence) and recordedonto
videotape.Thiseliminatesnoisewhichcouldveryoften be
mixedwith the musicsignals atthe time of recording.
Adaptable toAny Type of Video Cassette Recorder
HavingadoptedOptimumControlfunction, the RX-1permits
you to search forthe idealmatchingpoint,bestsuited toany
type of videocassetterecorder, VHSor Beta.Thismeansthat
theingeniousunitpromises you spectacularsoundquality
anytime,anywhere.
Theadaptabilitylevel is convenientlydisplayed onLED indi-
cators for yourquick,accuratereference.
OPTONICA's Unique Drop-Out Proof System with
99.995% Perfection
OPTONICA, by fullyutilizing a sophisticatedmemoryfunc-
tion, has developed a superbdrop-outsystem for dutiful,
accuratereproduction ofthe originalsound.Necessarydata
fordrop-outproofing are input atthe time of recording.Then
at the time of plaving,correction is done to nearperfection.
Theresult isa stunning99.995%correctioncapability.

ThewaytorecordorreproduceonPCM
Digitaloutput
Recording
Audio
z_
VideocassettePCMunit
recorder
°006O O *<§
O 000O T * 00
Amplifier-Speakers
Blocks ofthePCM unit
Clock
generator TV
generator
Sample
andhold
A/D-
converter Redundancy
Recording
-| Videocassetterecorder [*
H PLL
Data Error
check Memories Error
correction
D/A-
converter
Reproduction
Compact and Light,Culmination of ModernDesign-
ing
UnlikethegeneralconceptthatPCMadaptorsarebulkyand
heavy,OPTONICA'sRX-1isascompactasa stereoamplifier,
weighingonly15.5kg.Sharp'sinnovativesemiconductor
technologyhaschangedthewholeconcept.
Stunning 90dBDynamic Range
Digitalrecordingsystemmeansverylowdistortionandnoise,
resultingina stunning90dBdynamicrange,thanksto14-bit
quantizing.
ExtraHighFidelityRecording and Playback
Becausetheaudiosignalsareconvertedintopulsecodesfor
recordingandplayback,thesoundsignalsarenotaffectedby
rotarymechanismscharacteristictoanalogsystems.Theresult
isanextremelyhighfidelityinrecordingandplayback,
beyondanypossibilitiesoftheanalogsystem.
Accurate, Easy-to-Read LED LevelMeter
28LEDlevelmeterononechannelpermitspreciserecording
levels.
Easy to Connect to VariousKinds of Equipment
InadditiontoPINjacks,theunitincludescannonconnectors
andM typeconnectingjacks,foreasyconnectionoftheRX-1
withvariouskindsofequipment.
SpecialControl for PreciseAdaptability ofPCM
Adaptor to Videotape.
Jack for DigitalDirectDubbing.
Otherfeatures
*Mikemixing.* GoldplatedPINiacks.
*Headphonejack.
Recording
Recorded
tape
[£> oiooiio]C)
Correction
Audiosignals
Playbackwaveform of10kHz
Cassette tapedeckOpenreeltapedeck PCM system
Playbackwaveformofsilent portion (50 dBor 300 timesmagnificationonthescope)
Cassette tapedeckOpenreeltapedeckPCMsystem
HarmonicDistortion
Cassette tapedeck
PCM system
Wow andflutter
Cassette tapedeckOpenreeltapedeck PCM system
Microphones PCMunit Videocassetterecorder
Reproduction
Digitaloutput Audiooutput
Lowpass
filter Memories
Lowpass
filter
Outputs
I
nput
Sample
andhold
Digital Video
signal
Data formats
Signals
Reproduction
VCR
Recorded
tape Reproduced wave
Data
(Error)
Memories
D/A
Open reeltapedeck

Specifications
RX-1
PowerSource:
Dimensions:
Weight:
Recordingformat:
Transmissionchannels:
Samplingfrequency:
Numberof
quantizingbit:
Data transmissionrate:
Errorcorrection
capability:
Crosstalk:
Levelvariation:
AC220V,50Hz[AC100V,50/60Hz]*
430(W)x141(H)x360(D)mm
15.5kg
PCMrecordinginPALstandard
TVsignals[NTSCstandard]
2channels
44.100kHz[44.056kHz]
14-bit
2.625Mbps[2.643Mbps]
99.995%
Morethan60dB(1kHz,10kHz)
Belowmeasurability
o PowerSwitch ©
PCMTapeIndicator LEDLevelIndicator
©
LineOutputLevelControl
©
Headphone J ack
©
Anti-DigitalDubbingIndicator MICInputJack
©
LineInputLevelControl
©
PowerIndicator
©
ErrorCorrectionSignal
©
Mode(Record/Play)Switch
©
MICInputLevelControl
o PlaybackIndicator Indicators ErrorMonitorSwitch
©
OptimumControl
©
RecordIndicator
©
OptimumIndicators Headphone(Volume)Control
Bezugsquellennachweis
SHARP ELECTRONICS (EUROPE) GmbH.
SonninstraBe 3,2000 Hamburg 1,F.R. Germany
Tel: [phone] Telex: 2161867HEEGD
Telegram: SHARPEUROPAHAMBURG
SHARP CORPORATION OSAKA, JAPAN
CABLEADDRESS:LABOMETOSAKA
TELEX:63428LABOMETA-D '79©SHARPCORP.(8F2E)PrintedinJapan
Wow& flutter:Belowmeasurability
Harmonicdistortion:0.03%(1kHz)
Dynamicrange:90dB
Reproducingfrequency
range: DC- 20kHz
Others: Lineinputjack
Lineoutputjack
Headphonejack
Videoinput/outputjack
' Digitalsignalinput/outputjack
Dubbingjack
Externalsynchronizedinput/out-
putjack
* Note:Informationin[ j parenthesesisforNTSC
standard.
Themanufacturerreservestherighttovaryspecifica-
tions, design,orusealternativematerialsasmybe
deemednecessaryordesirableatanytime,anysuch
changeorvariationbeingofa kindasnottoreduce
quality,performanceorappearance.

MODEL
RX-1H
OPTONICA
PCM
DIGITAL AUDIO
ADAPTOR

Contents1
Features. . . . . . 2
Caution2
ControlsandFunctions3 — 4
Playback. .5
OptimumControl.6
Recording6
Dubbing....x......................7
Connections. 8 - 13
Specifications.14
Troubleshooting15
Note:
Audio-visualmaterialmayconsistofcopyrightedworkswhichmustnotrecorded
withouttheauthorityoftheownerofthecopyright.
Pleaserefertorelevantlawinyourcountry.
OPTONICA
PCMDIGITALAUDIOADAPTOR
RX-1H
CONTENTS

PCMDigitalAudioAdaptor
RX-1KPCM DIGITALAUDIOADAPTOROPTONICA
Congratulations!YouarenowtheowneroftheOPTONICARX-lHPCMdigitalaudso
adaptor.Tofullyappreciatethebenefitofthisqualityaudioproduct,itisadvisedthat
youreadandthoroughlyunderstandthisoperationalmanualbeforeusing.
FEATURES
1. MeetsEIAJ(ElectronicsIndustriesAssociationofJapan)standard(825line).
ThisdigitalaudioadaptorismanufacturedtomeettheEIAJstandardarrangedfor
625lineareasandcanbeusedonVHS,Beta,and U-matic formats.
2. Optimumcontrolfunction
ThiscontrolfunctionmaintainstheRX-iHattheoptimumplaybackperformance
levelwhenusedwithanyvideocassetterecorder.Itcompensatesfora minorper-
formancedeviationinvideocassetterecorders.
3.Equippedwithprofessionaltypeconnectors
BroadcaststandardconnectorssuchascannonconnectorsandPL-259typevideo
conneci®sareusedinadditiontopopularphonoconnectors.
CAUTION
AHintonSettinguptheEquipment
1. Positionallequipmentforeasyoperation.
2. Donotoperatetheunitinhumid,dustyareasorexposetheunittoextremeheat.
Atemperatureof30°Corbelowisrecommended.
3.Useanappropriatevoltageregulatorinareaswherevoltagefluctuationisabove
average.
PowerSource
TherecommendedpowersourcefortheunitisAC220V.Donotoperatetheunitexcept
withAC220V.Otherwise,electricalfailuresandotherhazardswillresult,includingfire
andelectricshocks.
Service
Therearenouser-serviceablepartsinside,
authorizeddealerforrepair. Incaseoffailure,taketheunittothenearest
Maintenance
Cleantheunitwithsoftclothandmilddetergent.Neverapplyalcohol,paintthinner,
orotherharmfulchemicals.
Thesedistillateswillsmearthecasingorremovethepaint.
DewProblemona videocassetterecorder
1. Donotoperatea videocassetterecorderinareaswheremoisturecondensationmight
occur.Moisturecondensationmayoccurinsidetheunitafterheatinga coldroom.
2. Pleaserefertoanowner'smanualofthevideocassetterecorderforfurtherinfor-
mationondewproblems.

CONTROLSANDFUNCTIONS
1. Powerswitch
Pushintheswitchto"on"position,andpushitinagainto"off"position.
2. Headphonejack
Acceptsanyheadphonewith3-ohmimpedance.
3.Powerindicator
Lightsup when thepoweris"on".
4. Playbackindicator
Lightsupwhenmodeswitch 1 2 isin"play"position.
5.Recordindicator
Lightsupwhen*modeswitch12isin"record"position.
8.PCMTapeindicator
ThelampindicatesthePCMTape(similartoa videocassettetape)isbeingplayed
back.
7.Anti-Digitaldubbingindicator
SomePCMTapeshaveanti-dubbingsignalsthatinterferewithdigitaldubbing.The
indicatorshowstheexistenceofsuchsignalsonthetape,anddubbingistherefore
inoperative,
8.frrrorcorrectionsignalindicators
TheseshowthelevelofsignalcorrectionbeingmadeontheprerecordedPCMt.tp<:s.
A"single"lampwilllightupwhensignalcorrectionismadeonce.Iftwo<«*jna!
correctionsarebeingmade,boththe"single"and"double"lamps.v--!ilight. .)
9.Optimumindicators
Thefewertheindicatorsareon,thebettertheplaybackconditionwhenusinga
PCMTape.Whenseveralindicatorsareon,turntheoptimumcontrolknob
clockwiseorcounter-clockwisetoobtainthebestcondition.
10. LEQlevelindicators
Recordingorplaybacklevelsoneachchannelaremonitored.Levelsettingdiffers
fromtheconventionalmethod.Itisrecommendedthattheaverageinputlevelbeset
around\—9dB;neverletthe"over"indicatorlightup.
11. MICinputjack
Acceptslowimpedancemicrophonesinrightandleftchannels.
12. Mode(Record/Play)switch
SelecteitherRecordorPlaymodewiththisswitch.
13. Errormonitorswitch(Two-waymonitorswitch)
Pushitto"source"positionformonitoringbothrecordingandplaybackper-
formancebyheadphones."Check"positionisformonitoringandcheckingtracking,
optimumcontrollevel,ordropoutswhenusinga videocassetterecorder.
14. Headphonevolumecontrol
Controlsoutputlevelforheadphones.Variablevolumecontroldoesnotaffect
recordinglevel.
15. Lineoutputlevelcontrol
Controlsplaybackoutputofthetapedsource.Setthecontrolknobtomaximum
whenusinganamplifier.Levelindicatorsshowthefixedoutput,regardlessof
outputlevelcontroloperation.

16. Lineinputlevelcontrol
Controlsinputlevelfroma homestereosystemora tapedeck.
17. MIC inputlevelcontrol
Controlsinputlevelfrommicrophones.
18. Optimumcontrol
Maintainsthedigitaladaptoratoptimumplaybackconditionwhenusedw•thany
videocassetterecorder.Itcompensatesa minorperformancedeviationin-/ki^o
cassetterecorders.
19. Lineinputterminal (phonojack)
ConnectsRecordoutorLineoutterminalsofanamplifier.Neverusethisterminal
andLineinputterminal(21)(cannontypeconnector)simultaneously1
20.Lineoutput terminal (phonojack)
ConnectsTape*playbackorLineinterminalsofanamplifier.
21. Lineinput terminal (cannon XLR-3-31 type unbalancedconnector)
Usethisterminalforconnectinga microphonemixerorotherprofessionalaudio
equipment.NeverusethisinputterminalandLineinputterminal(19) (phonojack)
simultaneously!
Thenumberthreepinisa hotwire.
22.Lineoutput terminal (cannon XLR-3-32 type unbalancedconnector)
UsethisterminalforconnectingLineoutputofprofessionaltypeamplifiers.
23. Digital input/output terminal
UsethisterminalforconnectinganotherRX-lHdigitaladaptor'sinput,'outout
terminalwhendigitaldubbingisperformedbyusingtwoRX-llijigitaijttaptorsand
twovideocassetterecorders.
24.Videoinput terminal
Usethisterminalforconnectingthevideooutputterminalofa videocassette
recorder.Neveruse thisvideoinput terminalandPL-259typevideoinputterminal
(26)atthesametime!
25. Video output terminal
Usethisterminalforconnectingthevideoinputterminalofa videocassetterecorder.
NeverusethisterminalandthePL-259typevideooutputterminal(27)simul-
taneously!
26.Videoinput terminal(PL-259 typeconnector)
UsethisterminalforconnectingthePL-259 type videooutputterminalofa video
cassetterecorder.Neverusethisterminalandanadditionalvideoinputterminal
(24)simultaneously!
27. Video output terminal(PL-259 typeconnector)
UsethisterminalforconnectingthePL-259typevideoinputterminalofa video
cassetterecorder.Neverusethisterminalandanadditionalvideooutputterminal
(25)simultaneously!
28. Dubbing output terminal
Usethisterminalwhendubbingisperformedbyusingthisdigitaladaptorjndtwo
videocassetterecorders.Connectittothevideoinputterminaloftherecording
videocassetterecorder.
29. External syncoutput terminal (phonojack)
Connecttotheexternalsyncinputterminalofa videocassetterecorder.
30. Externalsyncoutputterminal(PL-259type)
ConnecttothePL259typeexternalsyncinputterminalofa videocassetterecorder.
4-