JVC CA-WMD90R Additional Information, MD Disc Types, Atrac Adaptive TRansform Acoustic Coding

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Additional Information

MD Disc Types

Continued

There are two types of MDs: Premastered (prerecorded) and Recordable (blank).

Premastered MDs

Premastered MDs, which have been recorded at music studio, can be played back like regular CDs. On an MD of this type, data is recorded as the presence or absence of tiny pits. A laser beam focuses on the pits on the surface of the MD and reflects the detection back to the lens in the MD deck. MD deck then decodes the signals and plays them back as music. This type of MD is called an “optical disc.”

Recordable MDs

Recordable MDs, which use magneto-optical technology, can be recorded and played back repeatedly. The laser inside the MD deck applies heat to the MD, demagnetizing the magnetic layer of the MD for recording and playback. This type of MD is called an “magnetic-optical disc.”

ATRAC (Adaptive TRansform Acoustic Coding)

The MD provides 74 minute recording and playback time, the same as an audio CD, but in a diameter of only 64 mm. This ability to store such a large amount of data is the result of ATRAC, an audio compression technique developed for MD. This technology cuts out faint sounds that would not be heard by the human beings. This technology, based on human sensitivity to sounds, reduces recorded data volume up to about one-fifth of that of the original data.

UTOC (User Table Of Contents)

Found only on recordable MDs, this area contains sub-data (track number, recording data, etc.) which can be rewritten by the user.

UTOC enables us to search tracks quickly and edit tracks on the MD.

3:12

4:15

6:05

SCMS (Serial Copy Management System)

MD deck integrated to this unit uses the Serial Copy Management System which allows only first-generation digital copies to be made of premastered software (like CDs or prerecorded MDs).

1st Generation

	GIT
I		A
D			L

OK

2nd Generation

	GIT
I		A
D			L

NO

ABCDEFG

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Contents CA-WMD90R If in Doubt Consult a Competent Electrician Class Laser Product Introduction PrecautionsContents Location of the Buttons and Controls Display WindowBecome familiar with the buttons and controls on your unit Amplifier/tuner section Front PanelMD deck a section MD deck B sectionRemote Control Remote ControlConnecting Antennas Putting the Batteries into the Remote ControlGetting Started UnpackingYou can connect the speakers using the speaker cords Connecting SpeakersAM antenna To connect an outdoor AM antennaTo connect a cassette deck Connecting Other EquipmentTo start the display demonstration manually Output terminalBasic and Common Operations Front panel Remote controlTurning On the Power and Selecting the Sources Setting the ClockAdjusting the Volume To adjust the clock againTo use your own sound mode Creating Your Own Sound Mode Manual ModeReinforcing the Bass Sound Activating the Surround EffectListening to FM and AM MW/LW Broadcasts Tuning in a Station Presetting StationsTo change the FM reception mode Tuning in a Preset Station Receiving FM Stations with RDSChanging the RDS Information Alarm Òback to the beginning Switching to a Program Type of Your Choice TemporarilySearching for Programs by PTY Codes PTY Search PTY Select flashes in the main displayAlarm function Test functionMore about the EON function R. M Description of the PTY codesPlaying Back CDs Playing Back the Entire Discs Continuous Play Loading CDsBasic CD Operations To exchange CDs during playback of anotherTo check the program contents To go to another track directly using the number buttonsProgramming the Playing Order of the Tracks Program Play To go to another trackRepeating Tracks or CDs Repeat Play Playing at Random Random PlayProhibiting Disc Ejection Disc Lock Tracks of all loaded CDs will play at randomPlaying Back MDs CancelWhen using MD deck B When using MD deck aLoading MDs Playing Back the Entire MD Continuous PlayBasic MD Operations To change the display IndicationsWhile playing an MD, you can do the following operations Tracks are played in the order you have programed Insert an MDInsert MDs Press #/ 8 on MD deck B or MD B 6 on the remote controlRepeating Tracks Repeat Play To prohibit disc ejection Disc LockTracks of the loaded MDs will play at random FM/AM Tape AUX Recording on MDsAbout the track marks Before You Start RecordingTo avoid erasing important recordings Recording is only possible on MD deck BRecording the External AUX Equipment AUX Recording When recording from the cassette deck, start playing a tapeTo check the remaining time Press AUX againSynchronized Recording Various Recording FunctionsMD to MD Synchronized Recording Start playing the source on the external equipmentCD to MD Synchronized Recording To confirm the recording contentsPress Start Enter On the unit only Load a CDFirst Track Recording Single Track RecordingOn the unit only Load CDs Rotate the left jog dial to select the recordable MDOn the unit only Prepare a CD or an MD as the source sound Listening Edit RecordingRepeat to program other tracks To stop any time during editing process and startTriple Recording Prepare the source you want to record from Long RecordingLong REC lamp also lights Recording starts from MD 1, MD 2 to MDEditing MDs Introducing MD Editing Functions Divide Function Press MD EditTo join the divided tracks again, see the Join function Move Function Join FunctionTo divide the joined tracks, see the Divide function Rotate the right jog dial until Move ? appears Press SETErase Function CANCEL, then select the correct track number againEdit MD deck B starts playing the MDALL Erase Function TUV Assigning Titles to MDsAssigning a Title Using the Unit Press Enter Start to finish the current title entry Changing the TitleYou can make a correction or change the title Make sure that the character you want to change is flashingPress MD Title Input Track title entry indication mode appears whenPress the button for the next character you want to input Press Enter to finish the current title entryName Sleep Using the TimersHow Recording Timer actually works Using Recording TimerTo turn on or off Recording Timer after its setting is done To turn on the Recording Timer, press SETHow Daily Timer actually works Using Daily TimerVolume level will be set to 20 loud Volume level will be set the previous level whenTimer Priority Using Sleep TimerHow Sleep Timer actually works To clean the CD MaintenanceGeneral Notes Handling CDsAdditional Information Utoc User Table Of ContentsMD Disc Types Atrac Adaptive TRansform Acoustic CodingMD limitations Sound Skip Guard MemoryPossible Cause TroubleshootingMD Messages Signification SolutionSpecifications JVC 0399KSMMDWJEM