Alesis AI2 User Manual
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/MICRO LYNX.................................................... 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-2 INTERFACING ............................................................... 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-2 OR MICRO LYNX............. 18
3.5 TIME CODE CHASE INTERFACE ........................................ 20
3.6 EXTERNAL MIDI INTERFACING MIDI MACHINE CONTROL ........................
3.7 DIGITAL TRANSFER WITH THE AI-1 .................................. 22
21
CHAPTER 4: GETTING STARTED
4.0 POWER ON PROCEDURE ................................................... 24
4.1 ADAT ID NUMBERS.............................................................. 25
4.2 AI-2 CONFIGURATION .......................................................... 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-2 DEFAULTS .................................................................... 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-2 DISPLAY 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-2 is an extremely flexible and powerful interface device for
the ALESIS ADAT 8-track digital audio tape recorder. The AI-2 is
designed and manufactured for ALESIS by TimeLine, the world
leader in machine control and synchronization systems.
The AI-2 provides 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-2 supports 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-2 system operation
parameters, to select display information and to edit and control
AI-2 functions. The 8 LEDs give constant control and communication status, indicating correct operation. The AI-2 controls
have been designed to be quick and simple to use and will be
familiar to all studio operators.
• Simple Installation. AI-2 installation is extremely simple, the
AI-2 is 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 the AI-2 in its
basic form is accomplished by a 9-pin sync 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 same 9-pin style connector. When the
AI-2 is turned on, it automatically becomes the system master
and assigns each ADAT an identification number (ID) from first
to last, in the chain. The AI-2 then checks to see which
machines have tapes installed and automatically locates the
slave ADAT tapes to the master position.
1
• Storage of Setups. The AI-2 can read and write setup informa-
tion 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. The AI-2 can read existing BRC
information from the tape and will use only the data that it
requires. The AI-2 intelligently handles all the existing tape
header data so that it can be restored to tape non-destructively.
AI-2 information 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. The AI-2 has a built in broadband time
code reader and chase unit. The AI-2 will follow SMPTE or
EBU time code that is fed into the reader input.
• Time Code and MIDI. The AI-2 generates 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). The AI-2 generator 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-2 is 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, the AI-2 takes care of the frame rate conversions, so
the controlling device always sees time code at the correct rate.
The AI-2 even 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-2 is 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 the AI-2. At a later date we recommend that you read the
entire manual to acquaint yourself with the many AI-2 features that
you'll only discover by reading the manual.
1.2 OVERVIEW OF MAIN FUNCTIONS
The AI-2 is 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 the AI-2’s main functions.
1.2A Multiple Control Methods
The AI-2 allows multiple ADAT transports to be operated by a
number of external controls or synchronization devices. The AI-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-2 also allows simultaneous communication with a MIDI sequencer or controlling device.
1.2B Control of ADAT Functions
The AI-2 lets 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. The AI-2 also allows remote control of all 128 possible Track
enables and when used with a video editor the AI-2 TRACKS menu
provides comprehensive track mapping functions.
3
V
IDEO
R
AI-
EFERENCE
EXT WORD
CLOCK
ALESIS AI-2
MULTIPURPOSE AUDIO/VIDEO
SYNCHRONIZATION INTERFACE
BY
VIDEO EDITOR
SETUP
MENU
SET/HOLD
Optional-See Section 3.2
ALESIS BRC
MIDI
Time
Code
Word
Clock
CAPTURE
STORE
LAST
NEXT
SAVE
ONLINE
DOWN
UP
CLEAR
MMCONLINE LTCREFNON STD BRC/ADAT CONTROLLOCKDISPLAY
POWER
Chase
MIDITime Code
When using BRC with
Control
AUDIO OR VIDEO
TRANSPORT
TRANSPORT
REC
30
LTC
REH
DF
VITC
LOCK
25
SER
RESOLVE
PILOT
TACH
ONLINE
HMLRMT BWL VARI
24
FILM VITC
SPEED
MIDI COMPUTER
GENERATOR
29.97
INT
JAM TC
GEN
RDR
SYNC PT
OFFSET
ERR
VID
30
JAM UB
AUX
DF
TACH
MAINS
25
N/STD
RDR
ON
24
GEN
422
VSO
Sync connection is from
BRC to ADATs
TIMELINE SYNCHRONIZER
MASTER ADAT SLAVE ADAT
REWIND FAST FWD STOP PLAY RECORD EJECTPOWER 12345678
Sync In Sync Out
Sync Out Sync In
REWIND FAST FWD STOP PLAY RECORD EJECTPOWER 12345678
AI2022A
1.2C Reading and Saving Data
The AI-2 can 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 the AI-2 will 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-2 has comprehensive reference select options, which have
C
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. The AI-2 effortlessly handles
the conversions and controls the ADAT at the correct speed.
1.2E Status LEDs and Messages
The AI-2 front 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. The AI-2 also 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-2 block diagram shows how the functional blocks
in the AI-2 and the physical connectors are related.
MIDI In
MIDI Out
(MTC)
Video
Input
RDR
Input
(LTC)
W/C
Input
(48K)
Config. Sw.
Inputs
Aux.
MIDI
Port
Video Sync
Detector
Wideband
Time Code
Reader
CPU
Front Panel
LED Status
RS422
Port
Time Code
Generator
ADAT
MIDI
Port
Sample
Clock
Generator
ADAT
Time Code
Generator
Editor
(SONY P2)
Lynx-2 /
Micro Lynx
Gen
Out
In
Out
Thru
W/C Out
(48K)
Sync
Out
ADAT
AI2001A
BR
5
1.3 INPUT CONTROL MODES
The AI-2 can be controlled by one of four methods.
1. The AI-2 and the attached ADATs are controlled by a video
editor, or similar device, via a RS422 cable using standard Sony
protocols. The AI-2 emulates the functionality of the Sony PCM7030 digital audio tape recorder.
2. The AI-2 and the attached ADATs are controlled by a TimeLine
Lynx-2, Micro Lynx, or other synchronizer, using an interface
cable supplied by the synchronizer manufacturer. This cable
carries both control and time code information between the two
devices.
3. The AI-2 and the attached ADATs chase (follow) SMPTE or
EBU time code, which is fed into the AI-2's time code reader
input.
4. The AI-2 and the attached ADATs are controlled by MIDI
Machine Control (MMC) commands presented at the AI-2’s
Control MIDI Input.
1.4 OUTPUT CONTROL MODES
The AI-2 can control ADAT transports by one of two methods.
1. The AI-2 directly controls up to 16 ADAT recorders using the
proprietary Alesis daisy-chain cabling technique used when
multiple ADAT's are connected. The BRC Remote Control is
not used. The digital audio sample rate clock (word clock) for
the ADAT is generated by the AI-2.
2. The AI-2 controls the ALESIS BRC Remote Control, which is
then used to directly control up to 16 ADATs. The AI-2 controls
the BRC, using MIDI, word clock and time code signals.
6
1.5 "ENGAGED" VS. "DISENGAGED" TAPES
Analog audio recorders typically move tape past the heads between
1-7/8 and 30 inches per second. Higher play speeds result in a
higher bandwidth, or the ability to record high-frequency signals on
tape.
ADAT digital audio signals require a much higher bandwidth than
analog audio. To provide the increased bandwidth required, the
ADAT uses a VHS mechanism, which has a head drum that rotates
at very high speeds and records the digital audio on diagonal tape
tracks. This has the same effect, as far as the head is concerned,
as moving the tape at a much faster speed.
With ADAT, the tape is "engaged" if the tape is not moving, but is in
contact with the rotating head. This allows the ADAT to go into
Play or Record, instantaneously. When the AI-2 puts the system
into Still or Stop, the head remains spinning and the tape is not
disengaged.
When the tape is "disengaged", the ADAT head stops rotating and
the tape moves away from the head -- to prolong both tape and
head life. If the tape is disengaged, the ADAT will take slightly
longer to go into Play or Record as the tape has to engage. This
type of transport operation is identical to the operation of a normal
video tape transport.
The AI-2 will disengage the ADAT tape if it receives an Allstop
command and will engage the tape on receiving any transport
command, including Stop. The ADAT transport will automatically
disengage the tape to minimize wear if no transport activity occurs
after a period of 4 minutes.
7
CHAPTER 2: INSTALLATION
The AI-2 is a 1 unit high 19" Rack mount device. We recommend
that you install the AI-2 in the same rack or close to the ADAT
transports, permitting connection to the first ADAT transport with a
standard ALESIS 9-pin sync cable. If it is not possible to locate the
AI-2 adjacent to the ADAT, then the sync cable should be kept as
short as possible because the cable carries a high frequency
sample clock signal (48.000 KHz) which will degrade over distance.
The AI-2 rear panel provides connectors for the system timing
reference, controllers, the BRC and the ADAT machine chain.
Hook up the wall mounting power supply and control cables and
power on the AI-2, check that the front panel LCD backlight
illuminates.
2.0 POWER CONNECTION
Power for the AI-2 is provided by a 10 volt AC, 7.5 VA wall
mounting transformer, connect the output from the transformer to
the 2.5 mm jack socket marked POWER. The AI-2 power input
circuitry is designed to accept 9-12V AC. It will also accept a
9-12V DC input voltage of either polarity.
2.1 CONFIGURATION SWITCH
Next to the power connector is an eight position dip switch, which is
used to configure default setups and the AI-2 MIDI IDs.
DS #1 25 Frame initialization default
DS #2 Extended play tape times
DS #3 Defeat power up sequence
DS #4 Enable Setup mode Read Only option
DS #5 Midi device ID#
DS #6 Midi device ID#
DS #7 Reserved
DS #8 Reserved
It is not necessary to alter any of these dip switches now, except
for dip switch one (DS #1), which is used to default the AI-2 for
25 Frame operation after a system ram clear. If you are using the
AI-2 in Europe or will always be working with EBU time code then
we suggest that you set dip switch one ON.
8
2.2 REFERENCE CONNECTION
The AI-2 reference connections are used to connect an external
speed reference. Connectors are provided for time code, word
clock and video signals. These signals are used to control the
speed the ADAT machines will run at when in Play.
2.2A RDR IN
The RDR IN connector is a 1/4" TRS jack. The reader input is
differential with an input impedance >10k ohms and an input range
of -20 to +10 dBm. Connect a Longitudinal Time Code (LTC) feed
to this input when it is required to resolve the speed of the system
to time code or use the AI-2 as a time code chase synchronizer for
the ADATs.
2.2B W/C IN
The W/C IN connector is a female BNC socket. The word clock
input is 5 volt TTL. Connect a word clock reference source to this
input when it is required to resolve the speed of the system to an
external digital sample rate signal (word clock). The AI-2 word
clock input range is greater than the ADAT control range of 40.363-
50.854 KHz. Input signals with a 50% duty cycle are
recommended.
2.2C VID IN
The VID IN connector is a female BNC socket. The video input is
single ended with an input impedance >2k ohms and an input signal
range of 0.5-8.0 Vpp. Connect a video signal to this input when it is
required to resolve the speed of the system to video sync. The
video input will accept properly terminated Black burst, Color bars
or Composite sync. We do not recommend connecting the output
of a video tape transport.
The AI-2 video in connector can also be used as a video output if
the TimeLine Video Sync Generator card (VSG) is fitted inside the
AI-2. The VSG, can be used to generate composite sync at black
level, which is locked to the ADAT system reference. This ability is
extremely useful when a video deck needs to be locked to an ADAT
system and for some reason it is not possible to lock the entire
system to external video sync.
9
2.3 CONTROL CONNECTION
The AI-2 control connections are used to connect an external
controller. Connectors are provided for a video editor or similar
controller, the TimeLine Lynx-2 or Micro Lynx synchronizers, and
MIDI. These inputs are used to control connected ADATs through
the AI-2. The reader input can also be considered a control source
when the AI-2 is operating in time code chase mode.
2.3A EDITOR
The EDITOR connector is a 9-pin D type socket. The editor
connector conforms to the standard RS422 configuration and
operates asynchronously at a standard transmission rate of 38.4
Kbits per second. The editor port communications are Sony serial
protocol. Connect a 9-pin RS422 cable from an editor port to this
socket when it is required to control the AI-2 from a video editor.
The AI-2 emulates the SONY PCM-7030 digital audio tape
recorder, for best results select this device driver in the editor.
2.3B LYNX-2/MICRO LYNX
The LYNX-2/MICRO LYNX connector is a 25-pin D type socket.
The Lynx-2/Micro Lynx connector is an integral synchronizer
connector that contains RS422 communications, time code and a
system frame reference. Connect a TimeLine ADAT interface cable
from the Lynx-2 or Micro Lynx transport connector to this socket
when it is required to synchronize ADATs in a TimeLine machine
control system.
2.3C MIDI IN
The MIDI IN connector is a 5-pin din socket. The MIDI input is used
for MIDI Machine Control (MMC), external MIDI commands to the
AI-2, and feed through commands to the BRC, when connected.
Connect a MIDI cable to this socket when it is required to control
the AI-2 from an external MIDI device or controller.
10
2.3D MIDI OUT
The MIDI OUT connector is a 5-pin din socket. The MIDI output is
used for MIDI Machine Control responses (MMC), AI-2 responses
and BRC responses to external commands, and for MIDI Time
Code (MTC). Connect a MIDI cable to this socket when using an
external MIDI controller that requires MIDI responses.
2.4 BRC CONNECTION
The AI-2 BRC connections are used to connect a BRC to the AI-2.
Connectors are provided for MIDI, time code and word clock.
These signals are used to control the BRC which in turn controls
the connected ADATs.
2.4A MIDI IN
The MIDI IN connector is a 5-pin din socket. Connect a MIDI cable
to this input from the BRC MIDI output. BRC MIDI responses to
AI-2 or external requests are returned via this cable.
2.4B MIDI OUT
The MIDI OUT connector is a 5-pin din socket. Connect a MIDI
cable from this output to the BRC MIDI input. AI-2 or External MIDI
commands are sent to the BRC and ADATs via this cable.
2.4C MIDI THRU
The MIDI THRU connector is a 5-pin din socket. Connect a MIDI
cable to this socket if MIDI output responses from the BRC are
required.
2.4D GEN OUT
The GEN OUT connector is a 1/4" TRS jack. The generator output
is an unbalanced, longitudinal time code feed with a fixed level of
1.0 Vpp. Connect a 1/4" to 1/4" audio jack cable from this output to
the BRC SMPTE IN connector. The BRC uses the AI-2 time code
output as it's time code chase input. When ADATs are controlled
directly by the AI-2 the generator outputs the LTC value for the
current ADAT position.
11
2.4E W/C OUT
The W/C OUT connector is a female BNC socket. The word clock
output is a 5V TTL signal. Connect a BNC to BNC cable from this
output to the BRC 48 KHz input. This connector feeds either
external word clock or the AI-2 sample clock generator output
to the BRC.
2.5 ADAT CONNECTION
The AI-2 ADAT connection is used to connect the AI-2 to the first
ADAT machine, Successive ADATs are connected in turn, sync out
to sync in. This connector is not used when a BRC is configured as
part of the system.
2.5A SYNC OUT
The SYNC OUT connector is a 9-pin D type socket. The sync out
connector is used for direct connection to the ADAT machine chain.
Connect a male 9-pin D type cable from this connector to the sync
in connector on the first ADAT machine. This connector supplies
commands, 48 KHz clock and Alesis ADAT proprietary synchronization control information to the ADAT machines.
12
FRONT PANEL
POWER
AI2021A
CAPTURE
STORE
SET/HOLD
SETUP
Power Switch
ADAT
Sync Out
9 Pin D Connector
BNC Connector
MMCONLINE LTCREFNON STD BRC/ADAT CONTROLLOCKDISPLAY
Word Clock Out
GEN OUT W/C OUT SYNC OUT
1/4" TRS Jack
THRU
BRC
Generator Out
Status LEDs
MIDI
OUTIN
Control and Communication
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
UP
NEXT
ONLINE
CLEAR
LAST
DOWN
SAVE
Keys
OUTIN
MIDI
BRC MIDI
5 Pin Din Connector
MIDI In/Out
5 Pin Din Connector
MENU
CONTROL
LYNX-2 / MICRO LYNXEDITOR
Synchronizer
Lynx-2/Micro Lynx
25 Pin D Connector
BY
MULTIPURPOSE AUDIO/VIDEO
SYNCHRONIZATION INTERFACE
LCD Display AI-2 Control and Setup
Reader Input
1/4" TRS Jack
REAR PANEL
13
REFERENCE
ALESIS CORPORATION, LOS ANGELES
W/C INRDR IN VID IN
S/N
POWER CONFIG
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
MADE IN USA
TimeLine Vista, Inc.
MANUFACTURED BY
Editor 9 Pin
D Connector
Video Input
BNC Connector
BNC Connector
Word Clock Input
Configuration
Eight Position
Connector
9-12V AC Power
Switch
V
R
AI-2 APPLICATIONS
2,
CHAPTER 3: APPLICATIONS
3.0 AI-2 INTERFACING
The AI-2 is designed to quickly and effectively integrate the Alesis
ADAT digital audio tape recorders into studio and post production
facilities. The AI-2 can be used for a wide range of applications, from
basic chase synchronization to full control of 16 ADAT transports
from a video editor. The first diagram shows a generic configuration,
indicating a number of possible applications.
Optional-See Section 3.2
ALESIS BRC
MIDI
OUTIN
MIDITime Code
PUNCH IN/OUT LOCATE/PLAY SMPTE IN SMPTE OUT 48 kHz IN VIDEO SYNC IN MIDI IN MIDI OUT REMOTE OUT TO ADAT 90-250 VAC 50-60 Hz POWER ON/OFF48 kHz OUT
MIDI
MIDI
OUTIN THRU GEN OUT
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
Time
Code
BRC
IDEO
EFERENCE
EXT WORD
CLOCK
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
Chase
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
VIDEO EDITOR
CONTROL
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
LYNX-2 / MICRO LYNX
Control
Word
Clock
W/C OUT SYNC OUT
I
O
ADAT
When using BRC with AISync connection is from
BRC to ADATs
AUDIO OR VIDEO
TRANSPORT
TRANSPORT
REC
30
LTC
REH
DF
VITC
LOCK
25
SER
RESOLVE
24
PILOT
TACH
ONLINE
HMLRMT BWL VARI
FILM VITC
SPEED
MIDI COMPUTER
GENERATOR
29.97
INT
JAM TC
GEN
30
RDR
DF
SYNC PT
25
OFFSET
24
ERR
GEN
VID
JAM UB
AUX
TACH
MAINS
N/STD
RDR
ON
VSO
422
TIMELINE SYNCHRONIZER
MASTER ADAT SLAVE ADAT
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
PUNCH
LRC REMOTE
IN/OUT
Sync In Sync Out
OUTINLOCATE/PLAY
Sync Out Sync In
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
POWER REQUIREMENTS
OUTPUT
90-260 VAC
50-60 Hz
50 WATTS MAX
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
LRC REMOTE
PUNCH
IN/OUT
OUTINLOCATE/PLAY
14
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
POWER REQUIREMENTS
OUTPUT
90-260 VAC
50-60 Hz
50 WATTS MAX
AI2019A
3.1 INTERFACING TO ONE OR MORE ADAT'S
CONTROLLING ONE OR MORE ADAT'S (BASIC INTERFACE)
The AI-2 is used to connect one or more ADATs to a control
system. The basic ADAT connection is shown here. When the AI-2
is powered on it takes control of the ADAT chain and automatically
assigns machine IDs to the connected ADATs. Although by itself
the AI-2 cannot control the ADAT chain, if a reference source is
connected to the AI-2, when the ADAT transports are put into play
locally, the speed of the transports will be resolved to the selected
reference by the AI-2.
Connect a standard Alesis ADAT interconnect cable between the
AI-2 9-pin SYNC OUT connector and the SYNC IN connector of the
"master", or first, ADAT. Connect additional ADATs, SYNC OUT to
SYNC IN as described in the ADAT reference manual.
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
CONTROL
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
LYNX-2 / MICRO LYNX
MIDI
OUTIN
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
BRC
MIDI
OUTIN THRU GEN OUT
ADAT
W/C OUT SYNC OUT
MASTER ADAT SLAVE ADAT
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
PUNCH
LRC REMOTE
IN/OUT
Sync In Sync Out
When all the connections have been made, and the units powered
OUTINLOCATE/PLAY
Sync Out Sync In
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
on, the BRC/ADAT LED on the front panel of the AI-2 should be
illuminated, to indicate that valid communication is occurring
between the AI-2 and the ADAT units. If the LED does not light (no
communications) or is flashing (communication taking place, but
with errors) then recheck the cable connections.
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
LRC REMOTE
PUNCH
IN/OUT
OUTINLOCATE/PLAY
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
AI2007A
15
3.2 INTERFACING TO THE BRC
CONTROLLING THE BRC
REMOTE CONTROL
The AI-2 can be used to control one or more ADATs through the
BRC, this allows an "ADAT system" to be connected to a machine
control system or video editing system. The AI-2 communicates
with the control system and the BRC which can be used to provide
such features as track enable buttons and MIDI song tempo
mapping. The basic connections are shown below.
Connect the cables between the AI-2 BRC connector section and the
BRC. Two standard MIDI cables from AI-2 MIDI IN to BRC MIDI
OUT, and from AI-2 MIDI OUT to BRC MIDI IN. A standard BNC to
BNC coaxial cable from AI-2 W/C OUT to BRC 48 KHz IN and a
mono or stereo jack plug to jack plug cable from AI-2 GEN OUT to
the BRC SMPTE input. Connect the BRC REMOTE OUT TO ADAT
connector to the SYNC IN on the first ADAT transport.
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CONTROL
LYNX-2 / MICRO LYNX
MIDI
OUTIN
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
BRC
MIDI
OUTIN THRU GEN OUT
ADAT
W/C OUT SYNC OUT
ALESIS BRC
Time Code
Word Clock
MIDI
MIDI
PUNCH IN/OUT LOCATE/PLAY SMPTE IN SMPTE OUT 48 kHz IN VIDEO SYNC IN MIDI IN MIDI OUT REMOTE OUT TO ADAT 90-250 VAC 50-60 Hz POWER ON/OFF48 kHz OUT
MASTER ADAT SLAVE ADAT
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
PUNCH
LRC REMOTE
IN/OUT
Sync In
OUTINLOCATE/PLAY
Sync Out Sync In Sync Out
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
12345678
12345678
PUNCH
LRC REMOTE
IN/OUT
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
–10 dBV ANALOG OUTPUTS
SYNC METER BRIDGEFOOTSWITCHES
OUTINLOCATE/PLAY
DIGITAL
INPUT
OUTPUT
I
O
DIGITAL
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
AI2011A
16
Note, that the ADAT SYNC OUT connector on the AI-2 rear panel is
EDITOR INTERFACE
unconnected for this mode of operation.
When all connections have been made, and the units powered on,
the BRC/ADAT LED on the front panel of the AI-2 should be
illuminated, to indicate that valid communication is occurring
between the units. If the LED does not light (no communications)
or is flashing (communication taking place, but with errors), then
recheck the cable connections.
3.3 INTERFACING TO A VIDEO EDITOR
The AI-2 can be used to connect ADATs to a video editing system
or other editing devices. The AI-2 provides a 9-pin SONY protocol
VTR emulation for the ADAT transport. The AI-2 offers a number of
editor specific functions such as selectable E-E and record field
options and a comprehensive track mapping menu that maps editor
track enables to selected ADAT tracks or machines.
Connect a standard RS422 cable from the 9-pin EDITOR connector
in the control section of the AI-2 rear panel to a control output port
on the editor. Connect a video reference signal to the VID IN
connector in the reference section of the AI-2 rear panel. This
video reference can be either black burst, color bars or composite
sync, at either video or sync levels. The AI-2 normally emulates the
SONY PCM-7030 DAT recorder, if the editor does not recognize
this ID then the AI-2 emulation can be set to BVU950. Consult the
Appendix for further details about emulation constants.
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
(EXT WORD
CLOCK)
VIDEO
REFERENCE
EDITOR
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
CONTROL
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
LYNX-2 / MICRO LYNX
MIDI
OUTIN
Sync In
17
BRC
MIDI
OUTIN THRU GEN OUT
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
ALESIS ADAT
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
LRC REMOTE
PUNCH
IN/OUT
OUTINLOCATE/PLAY
ADAT
W/C OUT SYNC OUT
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
AI2008A
If required, an external digital audio sample rate clock may also be
connected to the W/C IN connector in the reference section of the
AI-2 rear panel. For the system to operate satisfactorily, the
external sample rate clock
video reference signal connected to the video input.
When the Editor is connected and communicating correctly, the
CONTROL LED on the front panel of the AI-2 should be illuminated,
to indicate that valid communication is occurring between the units.
If the LED does not light (no communications) or is flashing
(communication taking place, but with errors), then recheck the
cable connections.
The REF LED on the AI-2 front panel should also be illuminated,
indicating the presence of a valid video reference. If the REF LED is
flashing then check that a valid source of video sync is connected.
must be correctly synchronized to the
3.4 INTERFACING TO THE LYNX-2 OR MICRO
LYNX
The AI-2 has a special control connector for interfacing to the
TimeLine Lynx-2 and Micro Lynx synchronizers. To simplify the
machine control interface this connector supplies machine control
commands, time code and a system timing signal all in a single
cable. The latest versions of TimeLine software include special
optimized drivers for the ADAT machine and new features such as
expanded track support up to 128 tracks. The TimeLine interface
permits ADAT machines to be used in literally any situation where
ADATs need to be synchronized with other transports, film, video or
audio.
Connect a TimeLine ADAT interface cable from the LYNX-2/
MICRO LYNX connector in the control section of the AI-2 rear panel
to the appropriate transport connector on the synchronizer. The
synchronizer end of this cable has a small pigtail cable with a 1/4"
plug attached. This is the AI-2 time code line and should be
plugged into the appropriate time code reader input.
Connect a video reference signal to the VID IN connector in the
reference section of the AI-2 rear panel. For a Lynx-2 or Micro Lynx
system, it is not necessary to connect a video reference to the AI-2
video input, however it should be connected as a matter of good
practice, even if the synchronizer is using video sync as a
reference. The original Lynx synchronizer, as well as other
synchronizer systems require video sync to be connected to
operate correctly. Refer to the appendix for more information on
interfacing with
the Lynx.
18
An external digital audio word clock can be connected to the
LYNX-2 OR MICRO LYNX INTERFACE
reference W/C IN connector. The same precautions apply as for
the video editor interface, the word clock and synchronizer system
must both be locked to the same reference signal. For example, if
the synchronizer system is referenced to video sync, then the word
clock must also be referenced to video sync.
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
(EXT WORD
CLOCK)
VIDEO
REFERENCE (OPT)
LYNX-2
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
RESHAPE GEN OUT PILOT IN PILOT OUT
TC IN
CONTROL
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
LYNX-2 / MICRO LYNX
AUX
VITC MAC
EXT VIDEO
RS422TRANSPORT
MIDI
OUTIN
BRC
MIDI
OUTIN THRU GEN OUT
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
ALESIS ADAT
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
LRC REMOTE
PUNCH
IN/OUT
OUTINLOCATE/PLAY
ADAT
W/C OUT SYNC OUT
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
TC RDR
In
S/N
MADE IN USA
POWER VIDEO REF
VIDEO
REF (OPT)
When the Lynx-2 or Micro Lynx is connected correctly the
CONTROL LED on the front panel of the AI-2 should be illuminated,
to indicate that valid communication is occurring between the units.
If the LED does not light (no communications) or is flashing
(communication taking place, but with errors), then recheck the
cable connections.
TC RDR
In
TIME CODE
RDR 2RDR 1 OUT AUX IN AUX OUT
MIDI
IN
OUT THRU/OUT I/F MAC
TRANSPORT 1 TRANSPORT 2
Sync In
COMPUTER
KEYBOARD
RS232/422
IN THRU
VITC
SYSTEM TALLY
VIDEO OUT
MICRO LYNX
AUDIO CLOCK GENERATOR
AES/EBU
O.S. OUT WORD OUT CLOCK IN
RDR 3
TRANSPORT 3
AI2023A
19
3.5 TIME CODE CHASE INTERFACE
(
R
TIME CODE CHASE INTERFACE
The AI-2 has a high resolution bi-directional time code reader that
has been specifically designed for time code chase applications.
The reader can read all time code types, at any rate, including
discontinuous high speed code. The AI-2 thereby ensures that
ADAT tape recorders can be integrated into a system when only a
time code feed is available. The AI-2 reader has a wide input range
and an adjustable flywheel option to cater for bad time code. The
reader input can also be selected as the system reference when it
is necessary for the ADAT to lock to unreferenced or off speed
code.
Connect the RDR IN connector in the reference section of the AI-2
rear panel to the reference or master time code with a standard
mono or stereo jack plug cable.
In time code chase mode an optional video sync or word clock
reference may be connected. If an external reference is supplied,
the AI-2 will resolve the ADATs to the reference, while using the
time code input as a numerical reference only.
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
TIME
CODE IN
(EXT WORD
CLOCK)
VIDEO
EFERENCE)
Similar precautions apply, when using an external word clock, as
for the previous methods of operation. The word clock must be
locked to either the video reference, if used, or to the time code
which is being fed to the reader input.
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
CONTROL
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
LYNX-2 / MICRO LYNX
MIDI
OUTIN
Sync In
BRC
MIDI
OUTIN THRU GEN OUT
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
ALESIS ADAT
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
LRC REMOTE
PUNCH
IN/OUT
OUTINLOCATE/PLAY
ADAT
W/C OUT SYNC OUT
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
AI2012A
20
On the AI-2 front panel, the LTC LED will illuminate when valid time
EXTERNAL MIDI INTERFACING MIDI MACHINE CONTROL
code is being received at the rear panel reader input. If the LED
does not light or is flickering then check the time code cable or the
output level of the time code source.
3.6 EXTERNAL MIDI INTERFACING MIDI
MACHINE CONTROL
The AI-2 can be controlled from a MIDI controller or software
program that generates MIDI Machine Control (MMC) commands.
MIDI Machine Control commands and responses will operate
simultaneously with either the Editor or Lynx-2/Micro Lynx
synchronizer controllers. The AI-2 permits the seamless integration
of ADAT transports into the electronic music studio as MIDI
programs designed to control the BRC or ADAT machines can be
operated without configuring the system.
MIDI Machine Control commands are fed to the AI-2 using a
standard MIDI cable to the MIDI IN connector in the control section
of the AI-2 rear panel. MIDI Machine Control responses will appear
at the MIDI OUT connector. The MIDI out connector also optionally
includes MIDI time code.
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CONTROL
LYNX-2 / MICRO LYNX
EDITOR
LYNX-2 / MICRO LYNX
MMC COMMANDS
1
1
Operation in Parallel with either RS422 or
Lynx-2 / Micro Lynx Control.
MIDI
OUTIN
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
MMC RESPONSES
(Optionally includes
MIDI Time Code)
ALESIS ADAT
12345678
12345678
PUNCH
LRC REMOTE
IN/OUT
Sync In
BRC
MIDI
OUTIN THRU GEN OUT
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
–10 dBV ANALOG OUTPUTS
SYNC METER BRIDGEFOOTSWITCHES
OUTINLOCATE/PLAY
ADAT
W/C OUT SYNC OUT
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
AI2009A
21
During operation the MMC LED on the AI-2 front panel illuminates
to indicate valid MIDI data is being received. If the LED does not
light (no communications) or is flashing (communication taking
place, but with errors), then recheck the MIDI cable connections
and make sure that the MIDI controller or software is actually
generating MMC messages.
Details of supported MIDI Machine Control commands and
responses may be obtained by contacting TimeLine.
3.7 DIGITAL TRANSFER WITH THE AI-1
The AI-2 can be used with the Alesis AI-1 digital audio interface.
This permits synchronized digital audio transfer to and from other
multitrack digital audio tape recorders, DAT machines, digital audio
workstations and synthesizers. The AI-1 transfers digital audio in
the AES/EBU or S/PDIF formats. Both these formats use a self
clocking signal and care should be taken to ensure that the digital
audio equipment being synchronized is all locked to a common
reference.
The AI-1 should be installed at the end of the ADAT chain after the
last ADAT transport. Connect a standard Alesis sync cable from
the AI-2 SYNC OUT to the SYNC IN connector of the first ADAT
transport, connect further ADAT transports sync in to sync out, in
the normal manner. Connect the SYNC OUT connector of the last
ADAT to the AI-1 SYNC IN connector. Connect the ADAT proprietary multichannel optical digital interface so that there is a
complete loop from the AI-1 digital output through all the ADAT
transports, digital out to digital in, back to the AI-1 digital input.
Connect a coaxial BNC to BNC cable from the AI-1 48 KHz output
to the AI-2 W/C input.
The AI-2 requires the 48 KHz word clock signal from the AI-1 to
ensure the timing and positional information, being sent to the
ADATs, remains synchronous. If required an external video sync
signal can be connected to the reference VID IN connector or
synchronizer reference to the Lynx-2/Micro Lynx connector and the
AI-2 will use these signals to derive a frame edge for external
synchronization.
22
DIGITAL TRANSFER WITH THE AI-1
ALESIS AI-2
ALESIS CORPORATION, LOS ANGELES
S/N
POWER CONFIG
MANUFACTURED BY
TimeLine Vista, Inc.
Word
Clock In
MADE IN USA
REFERENCE
W/C INRDR IN VID IN
CONTROL
EDITOR
CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT REMOVE COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
LYNX-2 / MICRO LYNX
Digital I/O
BRC
MIDI
OUTIN
MIDI
OUTIN
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPTERATIONS.
GEN OUT
THRU
ADAT
W/C OUT SYNC OUT
Digital I/O
MASTER ADAT
LRC REMOTE
Sync In
ALESIS AI-1
60-250 VAC 50-60 Hz
As for all the previous methods of operation, when using external
references similar precautions apply. The reference signals must
be locked together. The word clock signal from the AI-1 is derived
from the incoming digital audio data, this must therefore be locked
to the video or synchronizer reference for the system to operate
correctly.
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
PUNCH
IN/OUT
OUTINLOCATE/PLAY
Sync Out Sync In
SLAVE ADAT
DIGITAL
DIGITAL
INPUT
OUTPUT
INPUT
OUTPUT
POWER REQUIREMENTS
90-260 VAC
50-60 Hz
50 WATTS MAX
–10 dBV ANALOG INPUTS +4 dBu ANALOG OPTICAL
12345678
–10 dBV ANALOG OUTPUTS
12345678
SYNC METER BRIDGEFOOTSWITCHES
LRC REMOTE
PUNCH
IN/OUT
OUTINLOCATE/PLAY
Sync Out
Sync In
48kHz OUT ADAT SPDIF AES/EBUSPDIF SYNC OUT SYNC IN
IN OUT IN OUT IN OUT
IN OUT
DIGITAL
INPUT
INPUT
OUTPUT
DIGITAL
OUTPUT
AI2018A
23
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