Alesis ADAT-XT manual Autolocation Controls, Absolute ABS Time VS . Relative Time, Locate

Page 52

Chapter 4: Basic Operations

AUTOLOCATION CONTROLS

The XT’s autolocation controls consist of 10 Locate Point memories which can be set either manually or “on the fly”, and recalled instantly.

J	Each Locate Point’s address can be displayed and set using either Absolute or
	Relative Time.
	Generally, Absolute Time and Relative Time will differ in their values. The XT,
	however, maintains a constant offset between them. This makes it possible to locate
	to various tape positions using either time reference.
	ABSOLUTE (ABS) TIME VS. RELATIVE TIME
	The TIME counter indicates where you are on the tape by using a time reference.
	There are two ways of displaying the time reference off tape: Absolute (ABS), the
	actual time reference, or Relative, the same time reference but relative to a different
	zero point. The Relative Time 0:00:00.00 point is set by holding the [SET LOCATE]
	button and pressing [LOCATE 0], or by editing the Locate 0 point.
	Use the [ABS/REL] button to select between Absolute Time and Relative Time
	modes; one of two icons (ABS or REL) will appear to the left of the TIME counter.
	When the display is in Absolute Time Mode (ABS icon lit), the display reflects the
	actual tape time. When in Relative Mode (REL icon lit), the display reflects the tape’s
	time reference relative to the 0:00:00.00 position. Once you hold the [SET LOCATE]
	button and press [LOCATE 0] to establish a new 0:00:00.00 position on tape (see
	below), Absolute and Relative times will be offset from one another. However, that
	offset will remain constant until the next time the relative zero position is reset.
	LOCATE 0
	If the [LOCATE 0] button is pressed, the transport will immediately begin locating to
	the 0:00:00.00 time location of the tape. If the TIME counter is in ABS mode when
	[LOCATE 0] is pressed, the absolute 0:00:00.00 position is located. If the TIME
	counter is in Relative mode when [LOCATE 0] is pressed, then the relative
	0:00:00.00 position is located. [LOCATE 0] is different from the other [LOCATE]
	buttons in this respect: it may wind the tape to different locations, depending whether
	the TIME counter is in ABS or REL mode. All the other locate points represent the
	same actual (physical) position on tape, regardless of whether the display is in ABS
	or REL mode.
	The [LOCATE 0] button is also used to set the relative zero time. When this button is
	pressed while holding [SET LOCATE], the relative tape counter is reset to zero
	(0:00:00.00). Once this occurs, you have changed the Relative Time zero point, and
	the display will automatically change to Relative Time mode (REL icon lit).

48	ADAT XT Reference Manual

Image 52

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 Setting UP AC Power HookupUnpacking and Inspection ChapterSetting Up About Audio Cables Line Conditioners and ProtectorsBasic Audio Hookup Input NormalingThreaded VS. Unthreaded Word on ADAT’S S-VHS Cassette TapeOperating Environment Thermal Considerations in Rack MountingMounting on a Shelf or NON-RACK Enclosure Avoiding Electromagnetic InterferencePOWER-UP,AND Tape Insertion Your First SessionABS 0H 15M 48S ABS n0 F0Formatting a Tape a Must Sample Rate SelectionFormatting a NEW Tape Recording While FormattingTrack Selection and Setting Levels To record-enable a trackREL 0H 01M 29S Making a RecordingTransport Buttons RecordingTo make a recording Record LED turns off, while the Play LED remains litTo engage Review mode To engage Cue modePlayback Reviewing and CueingREL 0H 00M 00S LocatingPage Creating a Loop To loop a section of tapeAutomated Recording RehearsingTo automatically punch in and out Measure twice or more, and cut only onceTrack Delay ABS 00 % 00 C70 mS Pitch ControlTo adjust the display brightness Track CopyDisplay Brightness To bounce audio from one track to anotherInput Jack Characteristics ConnectionsAnalog Audio Unbalanced Inputs Analog Audio Unbalanced OutputsAnalog Audio Balanced Inputs and Outputs Additional groundsAnalog Audio Input Mode Input ModeSync IN/OUT To synchronize multiple XTs and/or ADATsDigital Audio IN/OUT To connect the digital optical networkFootswitches Rehearse and Auto Record featuresXT Remote VersaBasic Operations Tape FormattingFormatting Considerations Complete FormatFormat Extend Be sure the tape is completely rewoundABS Pr 0t 0 FF ABS Pr 0t 0 nWrite Protect Override To extend the format on a partially formatted tapeReading the Display Display Icons Basic Operations 01M 29S Time Counter & ABS/REL ButtonLocate SelectedBasic Editing Edit Value ButtonEntering Numeric Values Editing Individual DigitsInput Select Analog InputDigital Input Track CopyBasic Operations Auto Input Monitor Input MonitorALL Input Monitor Peak Mode Button Fine Meter ModeMeters Recording a Benchmark T APERecord Enable Setting LevelsTransport Controls EjectRewind /REVIEW Fast Forward /CUERECORD/PUNCH in or OUT StopWhether the tape being played is formatted or not To start recordingSample Rate Clock Record Crossfade TimePositions as before To select the sample rateDisplaying Frames VS THS/SECONDS FA dE 2To set the Crossfade Time About Pitch Changing To turn Track Delay on and off To set the Track Delay amountTo set multiple tracks to the same Track Delay value 10 mSAbsolute ABS Time VS . Relative Time Autolocation ControlsLocate Setting Locate Points LocatingTo store a Locate Point memory on the fly To edit a Locate Point memoryAuto Looping Auto ReturnAuto Play Loop LimitAuto Record Tape LengthLooped Recording RehearsalEuropean 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 LockIndependent Slave Mode Master Format ENABLED, Complete FormatMaster Format ENABLED, Format Extend Formatting Multiple TapesMaster Format DISABLED, Format Extend Master Format DisabledBefore punching into format record Making Digital Backups Recording Digital AudioBouncing Tracks Between Adats Reassigning Channels to Different TracksTo make a backup tape Recording Digital Audio from Other SourcesTape Offset Digital Clock ConsiderationsSetting the Machine Offset ABS 0H 00M 00SCombining XTS and Adats XT Transport SpeedSample Rate VS. Pitch Control Input MonitoringPolarity Differences Here are some possible solutionsConnections Multiple ADAT-XT Operation Chapter Multiple ADAT-XT Operation Adat XT Reference Manual Applications Combined MULTITRACK/MASTERING DeckLIVE/LONG-TERM Recording Midi Machine Control Virtual Remote Control Locking to Video Code only MasterComputer Control Midi Systems Virtual TrackingLibraries and Archives Modular RecordingUsing Track Copy AS a Digital Router Calculating Tape Offset Using the LocatesPress Edit VALUE, then press Locate Digital Recording Concepts Analog Recording BasicsDigital Recording Basics Appendix aWHY S-VHS? Troubleshooting TROUBLE-SHOOTING IndexRE-INITIALIZING Appendix BError Rate Display About Error Rate ReadingsABS d1 SP E rr ABS d1 SP r E9Adat Head Maintenance Tape Maintenance Safe Tape MAINTENANCE/SERVICECleaning Drum Time DisplayMaintenance Obtaining Repair ServiceRefer ALL Servicing to Alesis Customers in the USAAppendix B Troubleshooting Error Codes Appendix CAutomatic Brake Calibration Procedure Steps to Take Before Calling for Help SpecificationsAppendix D Audio Digital Inputs/Outputs Glossary Or Analog-to-Digital ConverterBus DATMidi MMCOutput SMPTE/LTCVHS VitcIndex Index Adat XT Reference Manual