Alesis AI2 User Manual

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ALESIS

AI-2

Reference Manual

 

 

TABLE OF CONTENTS

 

CHAPTER 1: INTRODUCTION

 

1.0

ABOUT AI-2 .............................................................................

1

1.1

IMPORTANT NOTES ABOUT THIS MANUAL .......................

3

1.2

OVERVIEW OF MAIN FUNCTIONS ........................................

3

 

1.2A

Multiple Control Methods..................................................

3

 

1.2B

Control of ADAT Functions...............................................

3

 

1.2C Reading and Saving Data ................................................

4

 

1.2D

Reference Select..............................................................

5

 

1.2E

Status LEDs and Messages .............................................

5

 

1.2F Block Diagram ..................................................................

5

1.3

INPUT CONTROL MODES......................................................

6

1.4

OUTPUT CONTROL MODES .................................................

6

1.5

"ENGAGED" VS. "DISENGAGED" TAPES ...........................

7

CHAPTER 2: INSTALLATION

 

2.0

POWER CONNECTION ..........................................................

8

2.1

CONFIGURATION SWITCH ....................................................

8

2.2

REFERENCE CONNECTION ..................................................

9

 

2.2A

RDR IN .............................................................................

9

 

2.2B

W/C IN ..............................................................................

9

 

2.2C VID IN ...............................................................................

9

2.3

CONTROL CONNECTION ....................................................

10

 

2.3A

EDITOR ..........................................................................

10

 

2.3B

LYNX-2/MICROLYNX....................................................

10

 

2.3C MIDI IN ...........................................................................

10

 

2.3D MIDI OUT .......................................................................

11

2.4

BRC CONNECTION ..............................................................

11

 

2.4A

MIDI IN ...........................................................................

11

 

2.4B

MIDI OUT .......................................................................

11

 

2.4C MIDI THRU .....................................................................

11

 

2.4D GEN OUT .......................................................................

11

 

2.4E

W/C OUT ........................................................................

12

2.5

ADAT CONNECTION ............................................................

12

 

2.5A

SYNC OUT .....................................................................

12

CHAPTER 3: APPLICATIONS

 

3.0

AI-2INTERFACING ...............................................................

14

3.1

INTERFACING TO ONE OR MORE ADAT'S .......................

15

3.2

INTERFACING TO THE BRC ................................................

16

3.3

INTERFACING TO A VIDEO EDITOR ..................................

17

3.4

INTERFACING TO THE LYNX-2OR MICRO LYNX .............

18

3.5

TIME CODE CHASE INTERFACE ........................................

20

3.6

EXTERNAL MIDI INTERFACING MIDI MACHINE CONTROL21........................

3.7

DIGITAL TRANSFER WITH THE AI-1 ..................................

22

CHAPTER 4: GETTING STARTED

 

4.0

POWER ON PROCEDURE ...................................................

24

4.1

ADAT ID NUMBERS ..............................................................

25

4.2

AI-2CONFIGURATION ..........................................................

25

 

4.2A Time Code and Sample Rates .......................................

26

4.3

SETTING THE SYSTEM REFERENCE ................................

27

4.4

TIME CODE CHASE OPERATION .......................................

27

4.5

SETTING AN OFFSET ..........................................................

28

4.6

TRIM AN OFFSET .................................................................

29

4.7

USING CUE TIMES ...............................................................

29

4.8

SAVING TO TAPE .................................................................

30

4.9

CUSTOMIZING THE SETUP .................................................

30

4.10 RESET THE AI-2 .................................................................

30

CHAPTER 5: OPERATIONAL FEATURES

 

5.0

MODES OF OPERATION......................................................

31

5.1

NORMAL MODE ....................................................................

31

5.2

SET/HOLD MODE .................................................................

34

5.3

COMMAND MODE ................................................................

35

 

5.3A Method for Actioning Destructive Functions ...................

35

 

5.3B Save To Tape .................................................................

35

 

5.3C Read Tape......................................................................

36

 

5.3D Clear Header ..................................................................

36

 

5.3E Abort Data Read or Save ................................................

36

 

5.3F Read SysEx ....................................................................

36

 

5.3G Save SysEx ....................................................................

36

5.4

SETUP MODE .......................................................................

37

5.5

SAVING TO TAPE .................................................................

38

5.6

READING FROM TAPE ........................................................

38

5.7

AI-2DEFAULTS ....................................................................

38

5.8

LONGITUDINAL TIME CODE (LTC) .....................................

39

5.9

MIDI TIME CODE (MTC) ........................................................

40

5.10 TIME CODE AND SAMPLE CLOCKS .................................

40

5.11 SYSTEM REFERENCES .....................................................

41

 

5.11A External Word Clock Reference ...................................

42

 

5.11B Lynx Reference ............................................................

42

 

5.11C Video Reference...........................................................

42

 

5.11D

Internal Fixed................................................................

42

 

5.11E

Internal Variable ...........................................................

43

 

5.11F Reader Input .................................................................

43

5.12 SAMPLE CLOCK RATES ...................................................

43

CHAPTER 6: FEATURES AND CONTROLS

 

6.0

FRONT PANEL ......................................................................

44

6.1

POWER SWITCH...................................................................

44

6.2

FRONT PANEL LEDS ...........................................................

44

6.3

DISPLAY ................................................................................

46

 

6.3A Tape Motion Status ........................................................

46

6.4

FRONT PANEL KEYS ...........................................................

47

 

6.4A

Normal Operation ...........................................................

47

 

6.4B Setup Operation ..............................................................

48

 

6.4C

Set/Hold Operation.........................................................

49

6.5

SETUP MENUS AND FUNCTIONS ......................................

50

 

6.5A

ADAT Menu ....................................................................

50

 

6.5B

Commands Menu ...........................................................

51

 

6.5C Control Menu..................................................................

52

 

6.5D Cue Menu .......................................................................

53

 

6.5E

MIDI Menu ......................................................................

55

 

6.5F Reference Menu .............................................................

56

 

6.5G Status Menu ...................................................................

58

 

6.5H System Menu .................................................................

58

 

6.5I Tracks Menu ....................................................................

59

CHAPTER 7: ADVANCED FEATURES

 

7.0

ADAT DIGITAL INPUT ..........................................................

61

7.1

AI-2DISPLAY INFORMATION ..............................................

61

 

7.1A

Time Code and Position Error Displays..........................

61

 

7.1B

Time Code Number Differences .....................................

62

7.2

ALL SAFE..............................................................................

62

7.3

MIDI INTERFACING ..............................................................

62

 

7.3A

MIDI Time Code .............................................................

62

 

7.3B

BRC Control Feed Through ............................................

63

 

7.3C MIDI SysEx ....................................................................

63

7.4

REAR PANEL CONFIGURATION DIP SWITCHES ..............

64

7.5

EXT WORD CLOCK ..............................................................

65

7.6

INTERNAL VARI REFERENCE ............................................

65

7.7

GENERAL INFORMATION ...................................................

65

 

7.7A

Tape Header Information ...............................................

65

 

7.7B

Offline .............................................................................

66

 

7.7C Assemble mode..............................................................

66

CHAPTER 8: APPENDICES

 

8.0

APPENDIX 1: SPECIFICATIONS.........................................

67

 

8.0A

Operating Codes ............................................................

67

 

8.0B

Reference Sources.........................................................

67

 

8.0C Time Code Reader .........................................................

67

 

8.0D ADAT Synchronizer ........................................................

68

 

8.0E

Control ............................................................................

68

 

8.0F Front Panel .....................................................................

68

 

8.0G Electrical.........................................................................

68

 

8.0H

Interconnections .............................................................

69

 

8.0I

Option Cards ....................................................................

69

 

8.0J

Mechanical ......................................................................

69

8.1

APPENDIX 2: INTERFACE INFORMATION ........................

70

 

8.1A

Sony Editor Constants ....................................................

70

 

8.1B

Lynx Interface .................................................................

71

 

8.1C

External video.................................................................

71

 

8.1D External Word Clock.......................................................

72

 

8.1E

Internal Word Clock ........................................................

72

8.2

APPENDIX 3: MAINTENANCE/ ...........................................

73

 

8.2A

Cleaning .........................................................................

73

 

8.2B

Maintenance ...................................................................

73

 

8.2C

Servicing.........................................................................

73

8.3

APPENDIX 4: TROUBLESHOOTING ...................................

74

 

8.3A

Tape Status Messages...................................................

76

 

8.3B

System Status Messages ...............................................

77

 

8.3C Warnings ........................................................................

79

8.4

GLOSSARY ...........................................................................

81

8.5

FCC NOTICE .........................................................................

86

CHAPTER 1: INTRODUCTION

1.0 ABOUT AI-2

The AI-2is an extremely flexible and powerful interface device for the ALESIS ADAT8-trackdigital audio tape recorder. TheAI-2is designed and manufactured for ALESIS by TimeLine, the world leader in machine control and synchronization systems.

The AI-2provides a universal ADAT control interface allowing a bank of ADAT recorders to be controlled from a video editor, a tape machine synchronizer system or in time code chase.

The AI-2supports four primary input control and two output control modes. The input control modes provide an interface to external controllers, while the output modes allow control of up to 16 ADAT recorders, with or without the Alesis BRC Remote Control.

Sample Accurate Syncing Capabilities. Using ADAT's exclusive Proprietary Synchronization interface, the AI-2 can control up to 16 ADAT's, for a total of 128 tracks, and lock them together in perfect synchronization with other time code controlled devices.

Easy And Familiar Front Panel Controls. The AI-2 is fitted with a Liquid Crystal Display (LCD), 6 keys and a bank of status

LED's. The keys are used to setup AI-2system operation parameters, to select display information and to edit and controlAI-2functions. The 8 LEDs give constant control and communication status, indicating correct operation. TheAI-2controls have been designed to be quick and simple to use and will be familiar to all studio operators.

Simple Installation. AI-2installation is extremely simple, the

AI-2is a 1 Unit high product which is designed to fit into an industry standard 19" wide rack. All interface connections are made with standard connectors and the AC supply is a convenient wall mounting transformer. Connection to theAI-2in its basic form is accomplished by a9-pinsync cable, which connects to the first ADAT in the system and a cable to the selected controller. Successive ADATs are connected in turn--sync out to sync in--using the same9-pinstyle connector. When theAI-2is turned on, it automatically becomes the system master and assigns each ADAT an identification number (ID) from first to last, in the chain. TheAI-2then checks to see which machines have tapes installed and automatically locates the slave ADAT tapes to the master position.

1

Storage of Setups. TheAI-2can read and write setup information to the beginning of each ADAT tape, for later retrieval. This information (tape table of contents) is in the same format as the ALESIS BRC information. TheAI-2can read existing BRC information from the tape and will use only the data that it requires. TheAI-2intelligently handles all the existing tape header data so that it can be restored to tapenon-destructively.AI-2information saved to a new tape can also be used by a BRC in future sessions.

Editor and Synchronizer Control. The AI-2 permits ADAT tape recorders to be directly controlled from a video editor using SONY protocol or to be integrated into a TimeLine machine control system. The AI-2 ensures a transparent interface to the controller and provides features such as editor track mapping.

Time Code Chase. TheAI-2has a built in broadband time code reader and chase unit. TheAI-2will follow SMPTE or

EBU time code that is fed into the reader input.

Time Code and MIDI. TheAI-2generates Longitudinal time code and MIDI time code based on the ADAT’s position. The time code generated can be 30, DF, 25 or 24 frame code with 30 and DF being generated at a frame rate of either 30 or 29.97 fps (frames per second). TheAI-2generator is user selectable to run in Play, Stop and Wind transport modes.

Selectable Sample Clock Rates. The AI-2 will lock the ADATs to either internal or external digital audio word clocks. When the

AI-2is generating the ADAT sample clock, a nominal sample rate of 48 KHz, 47.952 KHz, 44.1 KHz or 44.056 KHz can be selected by the user. When a sample rate other than 48 KHz is selected, theAI-2takes care of the frame rate conversions, so the controlling device always sees time code at the correct rate.

The AI-2even includes a variable sample clock option so the

ADATs can be run in varispeed if required.

2

1.1 IMPORTANT NOTES ABOUT THIS MANUAL

The AI-2is an extremely easy to use interface, and has been designed to automatically configure, depending on the control signals that are detected. Although it is possible and extremely tempting to just plug in and start working, we strongly urge that you read the chapter, Getting Started in this manual, and the sections on Formatting in the ADAT Reference manual before you start using theAI-2.At a later date we recommend that you read the entire manual to acquaint yourself with the manyAI-2features that you'll only discover by reading the manual.

1.2 OVERVIEW OF MAIN FUNCTIONS

The AI-2is an extremely complex and sophisticated interface that has been designed to handle the demands of multitrack studio recording and the post production process. Here is a brief rundown of theAI-2’smain functions.

1.2A Multiple Control Methods

The AI-2allows multiple ADAT transports to be operated by a number of external controls or synchronization devices. TheAI-2’s

Control menu lets you select the controller, or if set to AUTO, will detect which controllers are connected and communicating and automatically switch. The AI-2also allows simultaneous communication with a MIDI sequencer or controlling device.

1.2B Control of ADAT Functions

The AI-2lets an external controller take control of many of the ADAT functions. All basic transport functions, including Digital input, All input and Auto input, can be controlled from the

AI-2.TheAI-2also allows remote control of all 128 possible Track enables and when used with a video editor theAI-2TRACKS menu provides comprehensive track mapping functions.

3

Optional-SeeSection 3.2

ALESIS BRC

VIDEO EDITOR

VIDEO

 

 

 

 

REFERENCE

 

 

 

 

EXT WORD

 

 

 

MIDI

CLOCK

 

 

 

Time

 

 

 

 

Code

 

 

 

 

Word

ALESIS AI-2

 

 

 

Clock

 

 

 

CAPTURE

 

 

SETUP

SET/HOLD

STORE

POWER

 

 

LAST

NEXT

 

MULTIPURPOSE AUDIO/VIDEO

DISPLAY

SAVE

ONLINE

ONLINE LOCK NON STD BRC/ADAT MMC CONTROL REF LTC

SYNCHRONIZATION INTERFACE

 

 

 

 

BY

MENU

DOWN

UP

 

 

 

 

CLEAR

 

Time Code

MIDI

Chase

 

 

Control

MIDI COMPUTER

AUDIO OR VIDEO

TRANSPORT

 

TRANSPORT

 

 

 

 

 

 

 

 

 

GENERATOR

 

 

LTC

REC

30

 

 

 

 

 

 

GEN

29.97

JAM TC

INT

GEN

VITC

REH

DF

 

 

 

 

 

 

RDR

30

JAM UB

VID

 

SER

LOCK

25

 

 

 

 

 

 

SYNC PT

DF

TACH

AUX

 

PILOT

RESOLVE

24

RMT BWL VARI

H

M

L

FILM

VITC

OFFSET

25

N/STD

MAINS

422

TACH

ONLINE

 

 

 

SPEED

 

 

 

ERR

24

ON

RDR

VSO

 

 

 

 

 

 

 

When using BRC with AI Sync connection is from BRC to ADATs

TIMELINE SYNCHRONIZER

MASTER ADAT

 

 

 

 

 

 

 

 

 

 

 

SLAVE ADAT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER

1

2

3

4

5

6

7

8

REWIND

FAST FWD

STOP

PLAY

RECORD

EJECT

POWER

1

2

3

4

5

6

7

8

REWIND

FAST FWD

STOP

PLAY

RECORD

EJECT

AI2022A

Sync In

 

Sync Out

 

Sync In

 

Sync Out

1.2C Reading and Saving Data

The AI-2can read and save session data to the ADAT tape header or to external MIDI devices. This means that each time a new ADAT tape is put in the machine theAI-2will be able to read all the associated Cue or Song times and you will be able to synchronize the tapes, effortlessly.

1.2D Reference Select

4

The AI-2has comprehensive reference select options, which have been structured to accommodate any possible combination of reference source, time code and sample rate. Each of the variables can be set in the REFERENCE menu. TheAI-2effortlessly handles the conversions and controls the ADAT at the correct speed.

1.2E Status LEDs and Messages

The AI-2front panel has eight LEDs that constantly indicate system status. In addition these LEDs are programmed to flash and warn the operator if there is a problem. TheAI-2also has a display message system which gives tape status, system status and error or warning messages when they occur

1.2F Block Diagram

The following AI-2block diagram shows how the functional blocks in theAI-2and the physical connectors are related.

 

Config. Sw.

Front Panel

 

Inputs

LED Status

MIDI In

Aux.

RS422

 

MIDI

MIDI Out

Port

Port

(MTC)

 

 

 

Video

Video Sync

Time Code

Input

Detector

Generator

RDR

Wideband

Input

Time Code

(LTC)

Reader

W/C Input (48K)

ADAT

MIDI

Port

Sample

Clock

Generator

ADAT

CPU Time Code

Generator

Editor

(SONY P2)

Lynx-2 /

Micro Lynx

Gen

 

Out

 

In

 

Out

BRC

 

Thru

 

W/C Out

(48K)

 

Sync

ADAT

Out

 

AI2001A

5