Audio | Alesis ADAT-XT specs

Appendix D: Specifications

Heads:	4 (2 Read, 2 Write); Read before Write
Approximate Recording Times:
ST-60:	22 minutes
ST-120/SE-180:	40 minutes
ST-160/SE-240:	54 minutes
ST-180/SE-260:	62 minutes
Fast Wind Rate:	40 x play speed (Threaded)

Audio

Number of Audio Channels:	Eight
Audio Conversion:
Record (A/D):	18 bit linear audio, 128 times oversampling, single
	converter per chan.
Playback (D/A):	20 bit linear, 8 times oversampling, single converter
	per chan.
Sample Rate:	44.1 /48kHz, Selectable
Vari Speed Range:	+100/-300 cents (48kHz), ±200 cents (44.1kHz)
Frequency Response:	20Hz– 20 kHz, ± 0.5dB
Dynamic Range:	92 dB, A weighted
Distortion:	.009% THD
Channel Crosstalk:	Better than -90 dB @ 1kHz
Wow and Flutter:	Unmeasurable
Reference Level:	-15dB

Analog Inputs/Outputs

Connectors:	One ELCO ® connector (in/out)
Balanced:	One ELCO ® connector (in/out)
Unbalanced:	Sixteen RCA jacks (8 input, 8 output)
Input Impedance:
Balanced:	10kW
Unbalanced:	10kW
Output Impedance:
Balanced:	150W into 600W Nominal
Unbalanced:	150W into 10k W Nominal
Nominal Input levels:
Balanced:	+4 dBu (1.23V)
Unbalanced:	-10 dBV (3.17V)
Maximum Input levels:
Balanced:	+19 dBu (6.90V)
Unbalanced:	+5 dBV (1.78V)

84	ADAT XT Reference Manual

Image 88

Alesis ADAT-XT manual Audio

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 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 Operating Environment Thermal Considerations in Rack MountingMounting on a Shelf or NON-RACK Enclosure Avoiding Electromagnetic Interference POWER-UP,AND Tape Insertion Your First SessionABS 0H 15M 48S ABS n0 F0 Formatting a Tape a Must Sample Rate SelectionFormatting a NEW Tape Recording While Formatting Track Selection and Setting Levels To record-enable a trackREL 0H 01M 29S Making a Recording Transport Buttons RecordingTo make a recording Record LED turns off, while the Play LED remains lit To engage Review mode To engage Cue modePlayback Reviewing and Cueing REL 0H 00M 00S LocatingPage Creating a Loop To loop a section of tape Automated Recording RehearsingTo automatically punch in and out Measure twice or more, and cut only once Track Delay ABS 00 % 00 C70 mS Pitch Control To adjust the display brightness Track CopyDisplay Brightness To bounce audio from one track to another Input Jack Characteristics ConnectionsAnalog Audio Unbalanced Inputs 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 Footswitches Rehearse and Auto Record featuresXT Remote Versa Basic Operations Tape FormattingFormatting Considerations Complete Format Format Extend Be sure the tape is completely rewound ABS Pr 0t 0 FF ABS Pr 0t 0 nWrite Protect Override To extend the format on a partially formatted tape Reading the Display Display Icons Basic Operations 01M 29S Time Counter & ABS/REL ButtonLocate Selected Basic Editing Edit Value ButtonEntering Numeric Values Editing Individual Digits Input Select Analog InputDigital Input Track Copy Basic Operations Auto Input Monitor Input MonitorALL Input Monitor Peak Mode Button Fine Meter ModeMeters Recording a Benchmark T APE Record Enable Setting Levels Transport Controls EjectRewind /REVIEW Fast Forward /CUE RECORD/PUNCH in or OUT StopWhether the tape being played is formatted or not To start recording Sample Rate Clock Record Crossfade TimePositions as before To select the sample rate Displaying 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 mS Absolute ABS Time VS . Relative Time Autolocation ControlsLocate Setting Locate Points LocatingTo store a Locate Point memory on the fly To edit a Locate Point memory Auto Looping Auto ReturnAuto Play Loop Limit Auto Record Tape LengthLooped Recording 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 Independent Slave Mode Master Format ENABLED, Complete FormatMaster Format ENABLED, Format Extend Formatting Multiple Tapes Master Format DISABLED, Format Extend Master Format DisabledBefore punching into format record Making Digital Backups Recording Digital AudioBouncing Tracks Between Adats 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 Combining XTS and Adats XT Transport SpeedSample Rate VS. Pitch Control 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 Midi Machine Control Virtual Remote Control Locking to Video Code only MasterComputer Control 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 Concepts Analog Recording BasicsDigital Recording Basics Appendix a WHY S-VHS? Troubleshooting TROUBLE-SHOOTING IndexRE-INITIALIZING Appendix B Error Rate Display About Error Rate ReadingsABS d1 SP E rr ABS d1 SP r E9 Adat Head Maintenance Tape Maintenance Safe Tape MAINTENANCE/SERVICECleaning Drum Time Display Maintenance Obtaining Repair ServiceRefer ALL Servicing to Alesis 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