Alesis ADAT-XT Audio , Analog Inputs/Outputs

Appendix D: Specifications

84 ADAT XT Reference Manual

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: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)

Contents

Main I H OW T O U SE T HIS M C Page I HOW TO USE THIS MANUAL Page C 1: SETTING UP7 2: YOUR FIRST SESSION WITH THE ADAT XT 13 3: CONNECTIONS 23 4: BASIC OPERATIONS 29 5: MULTIPLE ADAT-XT OPERATION 55 6: APPLICATIONS 67 APPENDIX A: DIGITAL RECORDING CONCEPTS 73 APPENDIX B: TROUBLESHOOTING 75 Page CHAPTER 1 SETTING UP any UNPACKING AND INSPECTION AC POWER H OOKUP AVOIDING GROUND LOOPS Page LINE CONDITIONERS AND PROTECTORS ABOUT AUDIO CABLES BASIC AUDIO HOOKUP INPUT NORMALING THREADED VS. UNTHREADED bandwidth Making Backups premium quality, name brand A WORD ON ADATS S-VHS CASSETTE TAPE OPERATING ENVIRONMENT THERMAL CONSIDERATIONS IN RACK MOUNTING MOUNTING ON A SHELF OR NON-R ACK ENCLOSURE AVOIDING ELECTROMAGNETIC INTERFERENCE YOUR FIRST SESSION WITH THE ADAT-XT FORMATTING A TAPE A MUST! SAMPLE RATE SELECTION F ORMATTING A N RECORDING WHILE FORMATTING MAKING A RECORDING TRACK SELECTION AND SETTING LEVELS TIME COUNTER TRANSPORT BUTTONS R P REVIEWING AND CUEING L Page CREATING A LOOP D AUTOMATED RECORDING D R 1 70. 0 mS D TRACK COPY DISPLAY BRIGHTNESS C ANALOG AUDIO UNBALANCED INPUTS ANALOG AUDIO UNBALANCED OUTPUTS ANALOG AUDIO BALANCED INPUTS AND OUTPUTS Larger Key Notch Note: INPUTS OUTPUTS ANALOG AUDIO INPUT MODE SYNC IN/OUT DIGITAL AUDIO IN/OUT F THE XT REMOTE CHAPTER 4 BASIC OPERATIONS T APE F J FORMATTING CONSIDERATIONS COMPLETE FORMAT RECORDING WHILE FORMATTING FORMAT EXTEND WRITE PROTECT OVERRIDE READING THE DISPLAY DISPLAY ICONS format extend Page TIME COUNTER & ABS/REL BUTTON The Locate Points addresses are displayed in the format of the display mode youve selected. 0 : 03 : 28 : 15 Autolocation minutes seconds 100ths-of-seconds BASIC EDITING EDIT V Examples: s AND t BUTTONS ENTERING NUMERIC VALUES INPUT SELECT ANALOG INPUT TRACK COPY Digital In/Out DIGITAL INPUT Page INPUT MONITOR AUTO INPUT MONITOR ALL INPUT MONITOR Transport Function Auto = Off All = Off Auto = On All = Off Auto = Off/On M PEAK MODE B UTTON PEAK CLEAR BUTTON FINE METER MODE RECORDING A B ENCHMARK TAPE RECORD ENABLE Transport Controls SETTING LEVELS Be sure the output level of your mixer matches the inputs connected to the XT (+4 or -10). TRANSPORT CONTROLS E The button will not operate while recording or formatting to avoid interrupting these processes. REWIND/R EVIEW RECORD/PUNCH IN OR OUT S SAMPLE RATE (CLOCK) before , and , Each time the DISPLAYING FRAMES VS. 100THS/SECONDS PITCH CONTROL The icon should be off. Note: This is not possible while recording. TRACK DELAY D Repeat steps through D AUTOLOCATION CONTROLS Each Locate Points address can be displayed and set using either Absolute or Relative Time. ABSOLUTE (ABS) TIME VS. R ELATIVE TIME LOCATE 0 SETTING LOCATE POINTS L AUTO LOOPING AUTO RETURN only AUTO PLAY LOOP LIMIT AUTO RECORD LOOPED RECORDING R FOOTSWITCH CONTROLS FOOTSWITCH CONTROLLED PUNCHING FOOTSWITCH CONTROLLED AUTOLOCATING USING THE XT REMOTE CHAPTER 5 M O O SYNCHRONIZING MACHINES Combining XTs and ADATs Sync In/Out MASTER/SLAVE INTERACTION but do not have any master tracks record-enabled A CHIEVING L INDEPENDENT SLAVE MODE F ORMATTING MULTIPLE T MASTER FORMAT ENABLED, COMPLETE FORMAT MASTER FORMAT ENABLED, FORMAT EXTEND MASTER FORMAT DISABLED MASTER FORMAT DISABLED, FORMAT EXTEND RECORDING DIGITAL AUDIO B MAKING DIGITAL BACKUPS is selected and there is no optical input, the If RECORDING DIGITAL AUDIO FROM OTHER SOURCES clock DIGITAL CLOCK CONSIDERATIONS TAPE OFFSET D COMBINING XTS AND ADATS XT T after S INPUT MONITORING POLARITY DIFFERENCES Possible problem: C Here are some possible solutions: Page Page CHAPTER 6 A O COMBINED MULTITRACK/M ASTERING DECK LIVE/LONG-TERM RECORDING continuous recording Note: and , LOCKING TO VIDEO: CODE ONLY MASTER C OMPUTER C MIDI SYSTEMS: VIRTUAL TRACKING MIDI MACHINE CONTROL: VIRTUAL REMOTE CONTROL LIBRARIES AND ARCHIVES MODULAR RECORDING USING TRACK COPY AS A DIGITAL ROUTER CALCULATING TAPE OFFSET USING THE LOCATES D APPENDIX A D IGITAL R ECORDING C ANALOG RECORDING BASICS DIGITAL RECORDING BASICS A/D WHY S-VHS? APPENDIX B T TROUBLE-S HOOTING INDEX Symptom Cause Solution RE-INITIALIZING CHECKING SOFTWARE VERSION E RROR RATE D error rate The TIME counter will briefly read: ADAT HEAD MAINTENANCE D RUM TIME D The number of drum hours will briefly appear in the TIME counter. TAPE MAINTENANCE: SAFE TAPE MAINTENANCE/SERVICE C M R EFER ALL SERVICING TO A OBTAINING REPAIR SERVICE Page APPENDIX C ERROR CODES Automatic Brake Calibration Procedure STEPS TO TAKE BEFORE CALLING FOR HELP APPENDIX D S Transport Audio Analog Inputs/Outputs Digital Inputs/Outputs General G A B C D Page N O P Q R S Page INDEX