Vhs, Vitc | Alesis ADAT-XT guide

Glossary

by the motion picture and television industries. A complete description of LTC can be found in The Time Code Handbook, by Walter Hickman. SMPTE timecode is the standard sync reference for professional audio and video post-production.

S/PDIF Interface

Similar to the AES/EBU interface, but created by Sony and Philips with consumer applications in mind. The optional AI-1 from Alesis offers both the consumer S/PDIF interface and professional AES/EBU format for use with the XT.

S-VHS

Acronym for Super Video Home System, an improved version of VHS with greater resolution and dubbing capabilities, as well as improved sound.

T

Track

An area of tape on which audio is recorded. A track can be thought of as a picture of an output over time.

U

Unbalanced Audio Signals

Signals that are carried on two-conductor cables, one “hot” and one ground. Unbalanced connections save costs, but are more prone to picking up hum and interference with low-level signals.

V

VHS

Acronym for Video Home System, a video recording system introduced for consumer use and using standardized cartridges.

VITC

Vertical Interval Time Code (VITC) is timecode information encoded in the vertical retrace interval of the video signal (this is the time when the beam is getting back to the top of the screen). The advantage of VITC is that the timecode value can be read when the video deck is paused, and is accurate to the frame.

W

X

Y

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90	ADAT XT Reference Manual

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Alesis ADAT-XT manual Vhs, Vitc

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 Unpacking and Inspection Setting UPAC Power Hookup Chapter Setting Up About Audio Cables Line Conditioners and Protectors Basic Audio Hookup Input Normaling Threaded VS. Unthreaded Word on ADAT’S S-VHS Cassette Tape Mounting on a Shelf or NON-RACK Enclosure Operating EnvironmentThermal Considerations in Rack Mounting Avoiding Electromagnetic Interference ABS 0H 15M 48S POWER-UP,AND Tape InsertionYour First Session ABS n0 F0 Formatting a NEW Tape Formatting a Tape a MustSample Rate Selection Recording While Formatting REL 0H 01M 29S Track Selection and Setting LevelsTo record-enable a track Making a Recording To make a recording Transport ButtonsRecording Record LED turns off, while the Play LED remains lit Playback To engage Review modeTo engage Cue mode Reviewing and Cueing REL 0H 00M 00S LocatingPage Creating a Loop To loop a section of tape To automatically punch in and out Automated RecordingRehearsing Measure twice or more, and cut only once 70 mS Track DelayABS 00 % 00 C Pitch Control Display Brightness To adjust the display brightnessTrack Copy To bounce audio from one track to another Analog Audio Unbalanced Inputs Input Jack CharacteristicsConnections Analog Audio Unbalanced Outputs Analog Audio Balanced Inputs and Outputs Additional grounds Analog Audio Input Mode Input Mode Sync IN/OUT To synchronize multiple XTs and/or ADATs Digital Audio IN/OUT To connect the digital optical network XT Remote FootswitchesRehearse and Auto Record features Versa Formatting Considerations Basic OperationsTape Formatting Complete Format Format Extend Be sure the tape is completely rewound Write Protect Override ABS Pr 0t 0 FFABS Pr 0t 0 n To extend the format on a partially formatted tape Reading the Display Display Icons Basic Operations Locate 01M 29STime Counter & ABS/REL Button Selected Entering Numeric Values Basic EditingEdit Value Button Editing Individual Digits Digital Input Input SelectAnalog Input Track Copy Basic Operations Auto Input Monitor Input MonitorALL Input Monitor Meters Peak Mode ButtonFine Meter Mode Recording a Benchmark T APE Record Enable Setting Levels Rewind /REVIEW Transport ControlsEject Fast Forward /CUE Whether the tape being played is formatted or not RECORD/PUNCH in or OUTStop To start recording Positions as before Sample Rate ClockRecord Crossfade Time To select the sample rate Displaying Frames VS THS/SECONDS FA dE 2To set the Crossfade Time About Pitch Changing To set multiple tracks to the same Track Delay value To turn Track Delay on and offTo set the Track Delay amount 10 mS Absolute ABS Time VS . Relative Time Autolocation ControlsLocate To store a Locate Point memory on the fly Setting Locate PointsLocating To edit a Locate Point memory Auto Play Auto LoopingAuto Return Loop Limit Looped Recording Auto RecordTape Length Rehearsal European equivalents and approximate recording times To set the tape lengthErroneously selected, to avoid damage to the tape Footswitch Controlled Punching Footswitch ControlsFootswitch Controlled Autolocating Using the XT Remote Overview OperationSynchronizing Machines Master /SLAVE Interaction Achieving Lock Master Format ENABLED, Format Extend Independent Slave ModeMaster Format ENABLED, Complete Format Formatting Multiple Tapes Master Format DISABLED, Format Extend Master Format DisabledBefore punching into format record Bouncing Tracks Between Adats Making Digital BackupsRecording Digital Audio Reassigning Channels to Different Tracks To make a backup tape Recording Digital Audio from Other Sources Tape Offset Digital Clock Considerations Setting the Machine Offset ABS 0H 00M 00S Sample Rate VS. Pitch Control Combining XTS and AdatsXT Transport Speed Input Monitoring Polarity Differences Here are some possible solutionsConnections Multiple ADAT-XT Operation Chapter Multiple ADAT-XT Operation Adat XT Reference Manual Applications Combined MULTITRACK/MASTERING Deck LIVE/LONG-TERM Recording Computer Control Midi Machine Control Virtual Remote ControlLocking to Video Code only Master Midi Systems Virtual Tracking Libraries and Archives Modular Recording Using Track Copy AS a Digital Router Calculating Tape Offset Using the Locates Press Edit VALUE, then press Locate Digital Recording Basics Digital Recording ConceptsAnalog Recording Basics Appendix a WHY S-VHS? RE-INITIALIZING TroubleshootingTROUBLE-SHOOTING Index Appendix B ABS d1 SP E rr Error Rate DisplayAbout Error Rate Readings ABS d1 SP r E9 Adat Head Maintenance Cleaning Tape Maintenance Safe TapeMAINTENANCE/SERVICE Drum Time Display Refer ALL Servicing to Alesis MaintenanceObtaining Repair Service Customers in the USA Appendix B Troubleshooting Error Codes Appendix C Automatic Brake Calibration Procedure Steps to Take Before Calling for Help SpecificationsAppendix D Audio Digital Inputs/Outputs Glossary Or Analog-to-Digital Converter Bus DAT Midi MMC Output SMPTE/LTC VHS Vitc Index Index Adat XT Reference Manual