Alesis ADAT-XT manual Output, Smpte/Ltc

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Glossary

N

O

Output

A path through which audio passes from one device to another. Types of outputs vary in connector type, level, use (sends, monitor, mix), and electrical characteristics (impedance, balanced or unbalanced). They can be analog or digital.

Oversampling

The process of taking more samples than is required in order to more accurately reconstruct a digitized signal back into analog audio.

P

Post-production

Begins after the film or video location shoot and is the process of combining, editing and processing audio elements into a final product to be married with the picture.

Punching

The process of entering and/or exiting the record function while the tape is playing. This allows recording over specific pieces of tape, such as recording over a section with bad notes, as opposed to recording over the entire length of the track.

Q

R

Record-Ready

A track mode, often called “armed.” When you want to record on a track, you “ready” or “arm” the track. When you push the record button, all tracks that are ready or armed will go into record mode.

Rotary Head

A type of tape head, as used in the XT, that spins at a high rate of speed in order to create the same effect as having the tape moving by at rates not physically possible with today’s tapes and transports.

S

Safe

A track mode. When a track is safe, it is not ready for recording.

Sample Rate

A digital representation of an analog signal created by checking, or sampling, the analog voltage a fixed number of times per second. The greater the number of samples, the more accurate the representation of the analog signal. The CD uses a sampling rate of 44.1 kHz; it checks the analog signal 44,100 times per second.

Sample Rate Conversion

Sample rate conversion is the process by which audio originally recorded at one sample rate is converted to another sample rate. The audio is converted by shifting its pitch up or down, and then played back at the new sample rate.

SMPTE/LTC

Society of Motion Picture and Television Engineers (SMPTE and Longitudinal Time Code (LTC). A standard for LTC was specified by the SMPTE, and has been adopted

ADAT XT Reference Manual

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Contents Alesis ADAT-XT Introduction Adat XT Reference Manual Conventions Adat XT Reference Manual Contents Basic Operations Analog Recording Basics Digital Recording Basics Why S-VHS? Index Maintenance/Service Cleaning Obtaining Repair Service AC Power Hookup Setting UPUnpacking and Inspection ChapterSetting Up Line Conditioners and Protectors About Audio CablesInput Normaling Basic Audio HookupWord on ADAT’S S-VHS Cassette Tape Threaded VS. UnthreadedThermal Considerations in Rack Mounting Operating EnvironmentMounting on a Shelf or NON-RACK Enclosure Avoiding Electromagnetic InterferenceYour First Session POWER-UP,AND Tape InsertionABS 0H 15M 48S ABS n0 F0Sample Rate Selection Formatting a Tape a MustFormatting a NEW Tape Recording While FormattingTo record-enable a track Track Selection and Setting LevelsREL 0H 01M 29S Making a RecordingRecording Transport ButtonsTo make a recording Record LED turns off, while the Play LED remains litTo engage Cue mode To engage Review modePlayback Reviewing and CueingLocating REL 0H 00M 00SPage To loop a section of tape Creating a LoopRehearsing Automated RecordingTo automatically punch in and out Measure twice or more, and cut only onceABS 00 % 00 C Track Delay70 mS Pitch ControlTrack Copy To adjust the display brightnessDisplay Brightness To bounce audio from one track to anotherConnections Input Jack CharacteristicsAnalog Audio Unbalanced Inputs Analog Audio Unbalanced OutputsAdditional grounds Analog Audio Balanced Inputs and OutputsInput Mode Analog Audio Input ModeTo synchronize multiple XTs and/or ADATs Sync IN/OUTTo connect the digital optical network Digital Audio IN/OUTRehearse and Auto Record features FootswitchesXT Remote VersaTape Formatting Basic OperationsFormatting Considerations Complete FormatBe sure the tape is completely rewound Format ExtendABS Pr 0t 0 n ABS Pr 0t 0 FFWrite Protect Override To extend the format on a partially formatted tapeReading the Display Display Icons Basic Operations Time Counter & ABS/REL Button 01M 29SLocate SelectedEdit Value Button Basic EditingEntering Numeric Values Editing Individual DigitsAnalog Input Input SelectDigital Input Track CopyBasic Operations Input Monitor Auto Input MonitorALL Input Monitor Fine Meter Mode Peak Mode ButtonMeters Recording a Benchmark T APESetting Levels Record EnableEject Transport ControlsRewind /REVIEW Fast Forward /CUEStop RECORD/PUNCH in or OUTWhether the tape being played is formatted or not To start recordingRecord Crossfade Time Sample Rate ClockPositions as before To select the sample rateFA dE 2 Displaying Frames VS THS/SECONDSTo set the Crossfade Time About Pitch Changing To set the Track Delay amount To turn Track Delay on and offTo set multiple tracks to the same Track Delay value 10 mSAutolocation Controls Absolute ABS Time VS . Relative TimeLocate Locating Setting Locate PointsTo store a Locate Point memory on the fly To edit a Locate Point memoryAuto Return Auto LoopingAuto Play Loop LimitTape Length Auto RecordLooped Recording RehearsalTo set the tape length European equivalents and approximate recording timesErroneously selected, to avoid damage to the tape Footswitch Controls Footswitch Controlled PunchingFootswitch Controlled Autolocating Using the XT Remote Operation OverviewSynchronizing Machines Achieving Lock Master /SLAVE InteractionMaster Format ENABLED, Complete Format Independent Slave ModeMaster Format ENABLED, Format Extend Formatting Multiple TapesMaster Format Disabled Master Format DISABLED, Format ExtendBefore punching into format record Recording Digital Audio Making Digital BackupsBouncing Tracks Between Adats Reassigning Channels to Different TracksRecording Digital Audio from Other Sources To make a backup tapeDigital Clock Considerations Tape OffsetABS 0H 00M 00S Setting the Machine OffsetXT Transport Speed Combining XTS and AdatsSample Rate VS. Pitch Control Input MonitoringHere are some possible solutions Polarity DifferencesConnections Multiple ADAT-XT Operation Chapter Multiple ADAT-XT Operation Adat XT Reference Manual Combined MULTITRACK/MASTERING Deck ApplicationsLIVE/LONG-TERM Recording Locking to Video Code only Master Midi Machine Control Virtual Remote ControlComputer Control Midi Systems Virtual TrackingModular Recording Libraries and ArchivesCalculating Tape Offset Using the Locates Using Track Copy AS a Digital RouterPress Edit VALUE, then press Locate Analog Recording Basics Digital Recording ConceptsDigital Recording Basics Appendix aWHY S-VHS? TROUBLE-SHOOTING Index TroubleshootingRE-INITIALIZING Appendix BAbout Error Rate Readings Error Rate DisplayABS d1 SP E rr ABS d1 SP r E9Adat Head Maintenance MAINTENANCE/SERVICE Tape Maintenance Safe TapeCleaning Drum Time DisplayObtaining Repair Service MaintenanceRefer ALL Servicing to Alesis Customers in the USAAppendix B Troubleshooting Appendix C Error CodesAutomatic Brake Calibration Procedure Specifications Steps to Take Before Calling for HelpAppendix D Audio Digital Inputs/Outputs Or Analog-to-Digital Converter GlossaryDAT BusMMC MidiSMPTE/LTC OutputVitc VHSIndex Index Adat XT Reference Manual