003, 96 I/O, 96i I/O, 192 Digital I/O, 192 I/O, 888|24 I/O,
882|20 I/O, 1622 I/O, 24-Bit ADAT Bridge I/O, AudioSuite,
Avid, Avid DNA, Avid Mojo, Avid Unity, Avid Unity ISIS,
Avid Xpress, AVoption, Axiom, Beat Detective,
Bomb Factory, Bruno, C|24, Command|8, Control|24,
D-Command, D-Control, D-Fi, D-fx, D-Show, D-Verb, DAE,
Digi 002, DigiBase, DigiDelivery, Digidesign,
Digidesign Audio Engine, Digidesign Intelligent Noise
Reduction, Digidesign TDM Bus, DigiDrive, DigiRack,
DigiTest, DigiTranslator, DINR, DV Toolkit, EditPack, Eleven,
EUCON, HD Core, HD Process, Hybrid, Impact, Interplay,
LoFi, M-Audio, MachineControl, Maxim, Mbox,
MediaComposer, MIDI I/O, MIX, MultiShell, Nitris, OMF,
OMF Interchange, PRE, ProControl, Pro Tools M-Powered,
Pro Tools, Pro Tools|HD, Pro Tools LE, QuickPunch,
Recti-Fi, Reel Tape, Reso, Reverb One, ReVibe, RTAS,
Sibelius, Smack!, SoundReplacer, Sound DesignerII, Strike,
Structure, SYNC HD, SYNC I/O, Synchronic, TL Aggro,
TL AutoPan, TL Drum Rehab, TL Everyphase, TL Fauxlder,
TL In Tune, TL MasterMeter, TL Metro, TL Space, TL Utilities,
Transfuser, Trillium Lane Labs, Vari-Fi, Velvet, X-Form, and
XMON are trademarks or registered trademarks of Avid
Technology, Inc. Xpand! is Registered in the U.S. Patent and
Trademark Office. All other trademarks are the property of
their respective owners.
Product features, specifications, system requirements, and
availability are subject to change without notice.
Guide Part Number 9329-65166-00 REV A 10/11
Documentation Feedback
At Avid, we are always looking for ways to improve our
documentation. If you have comments, corrections, or
suggestions regarding our documentation, email us at
techpubs@avid.com.
Avid® HD MADI is a 64-channel, digital audio
interface designed for use with Avid HD Native
and Pro Tools|HD hardware. HD MADI supports the Multichannel Audio Digital Interface
(MADI) format and sample rates of up to
192 kHz.
HD MADI provides simplified connectivity
between Pro Tools
dio equipment, such as routers, digital mixing
consoles, VENUE systems (with the MADI option), and converters.
®
and MADI-compatible au-
HD MADI Features
• 2 MADI Optical and Coaxial inputs and 2
MADI Optical and Coaxial outputs for up to 64
discrete channels of digital input and output
(32 channels per DigiLink Mini port)
• Supports sample rates of 44.1, 48, 88.2, 96,
176.4, and 192 kHz
• 24- or 16-bit resolution
• Sample Rate Conversion (SRC) on input or
output
• Front panel clock and SRC indicators
• Front panel signal present LEDs for input and
output
•BNC Word Clock I/O for synchronizing HD
MADI with external 1x Word Clock
•BNC Loop Sync I/O for synchronizing
HD MADI with additional Avid HD audio
interfaces and peripherals (such as HD I/O,
HD OMNI, or SYNC HD)
• Dedicated BNC Word Clock input and XLR
AES/EBU input (clock input only) for external
MADI synchronization (when using SRC on
output)
• Clock support for the following formats: Internal, Loop Sync, Word Clock, AES/EBU, and
MADI
• Varispeed modes (supports both 64- and 56channel standards)
What’s Included
•HD MADI audio interface
•AC power cable
• 2 DigiLink Mini cables (12 ft.)
•2 DigiLink Mini adapters
• 2 BNC cables (2 ft.)
• 4 rubber adhesive feet
•4 rack screws and washers
•HD MADI Guide
•Health and Safety Guide
• Registration Information Card
Chapter 1: Introduction 1
System Requirements and
Compatibility
Avid can only assure compatibility and provide
support for hardware and software it has tested
and approved.
For complete system requirements and a list of
qualified computers, operating systems, hard
drives, and third-party devices, visit:
www.avid.com/compatibility
Registration
About this Guide
This guide provides a basic overview of HD
MADI features and functionality.
For hardware installation instructions for your
HD Native hardware, see the HD Native Install Guide.
For hardware installation instructions for your
Pro Tools|HD hardware, see the Pro Tools|HD User Guide.
For Pro Tools installation instructions, see the
Pro Tools Installation Guide.
Review the enclosed Registration Information
Card and follow the instructions on it to quickly
register your purchase online. By registering,
you become eligible to receive the following:
• Technical support information
• Software update and upgrade notices
• Hardware warranty information
Hardware Warranty
Your warranty can be found on the Registration
Information Card.
For additional information about using
Pro Tools software, see the Pro Tools Reference
Guide (in Pro Tools, choose
Reference Guide
).
Help > Pro Tools
HD MADI Guide2
Conventions Used in This Guide
All of our guides use the following conventions
to indicate menu choices and key commands:
:
ConventionAction
File > SaveChoose Save from the
Control+NHold down the Control key
Control-clickHold down the Control key
Right-click Click with the right
The names of Commands, Options, and Settings
that appear on-screen are in a different font.
File menu
and press the N key
and click the mouse button
mouse button
About www.avid.com
The Avid website (www.avid.com) is your best
online source for information to help you get the
most out of your Pro Tools system. The following are just a few of the services and features
available.
Product Registration
online.
Support and Downloads
Success (technical support); download software
updates and the latest online manuals; browse
the Compatibility documents for system requirements; search the online Knowledge Base
or join the worldwide Pro Tools community on
the User Conference.
Register your purchase
Contact Avid Customer
The following symbols are used to highlight
important information:
User Tips are helpful hints for getting the
most from your system.
Important Notices include information that
could affect your data or the performance of
your system.
Shortcuts show you useful keyboard or
mouse shortcuts.
Cross References point to related sections in
this guide and other Pro Tools guides.
Training and Education
Study on your own using
courses available online or find out how you can
learn in a classroom setting at a certified
Pro Tools training center.
Products and Developers
Learn about Avid
products; download demo software or learn
about our Development Partners and their plugins, applications, and hardware.
News and Events
Get the latest news from Avid
or sign up for a Pro Tools demo.
Chapter 1: Introduction 3
HD MADI Guide4
Chapter 2: HD MADI Overview
This chapter provides an overview of the front and back panel features of HD MADI.
HD MADI Front Panel
HD MADI front panel
Power Switch and LED Ring
This b utto n tur ns H D MA DI on and o ff. T he L ED
ring around the power button will light green or
orange to indicate the system status:
Green LED Ring
ered up successfully and is connected to an active system.
Orange LED Ring
power, but the computer it is connected to is
shut down.
Indicates that the unit has pow-
Indicates that the unit has
Sample Rate
These LEDs display the current sample rate of
the internal crystal oscillator for HD MADI:
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz,
or 192 kHz. The sample rate is set when you create a new session, and can be changed in the
Pro Tools Hardware Setup or Playback Engine
dialogs if no session is open.
Loop Master LED
The LOOP MASTER LED indicates which audio
interface is the master peripheral. The Loop
Master LED will be continuously lit on the current Loop Master peripheral only, and unlit on
all other peripherals. (Only one Avid HD peripheral can be Loop Master at a time.) The Loop
Master LED will always be lit with a single interface.
With HD Native hardware, Loop Master defaults
to the first audio interface connected to DigiLink Mini Port 1 on the HD Native card.
For Pro Tools|HD systems, Loop Master defaults
to the first audio interface connected to the primary, or “core” Pro Tools|HD card—on
Pro Tools|HD (for PCIe) this is the Accel Core
card. On Pro Tools|HD (for PCI) this is the HD
Core card.
Chapter 2: HD MADI Overview 5
Sync Mode LEDs
The SYNC MODE LEDs indicate the current
Clock Source as set in Pro Tools.
INT (Internal)
is generated by its internal crystal oscillator, as
determined by the session Sample Rate.
DIG (Digital)
providing system clock.
Indicates HD MADI sample clock
Indicates that MADI digital sync is
When synchronized to Word Clock, External
Clock input and output do not have to be at the
same Word Clock Rate. Synchronization to External Clock is typically 1x the current session
sample rate. However, for sample rates higher
than 48 kHz, HD MADI generates a choice of 1x,
2x, or 4x the base rate of 44.1 kHz or 48 kHz, as
follows:
Session Sample RateWord Clock Support
LOOP
Indicates that HD MADI is slaving to an-
other peripheral using Loop Sync.
EXT (External)
Indicates that HD MADI is using
the Word Clock in port (BNC) for system synchronization.
44.1 kHz44.1 kHz
48 kHz48 kHz
88.2 kHz88.2 kHz
44.1 kHz
96 kHz96 kHz
48 kHz
176.4 kHz176.4 kHz
44.1 kHz
192 kHz192 kHz
48 kHz
HD MADI Guide6
Sample Rate Convert
Signal Present
HD MADI provides real-time sample rate
conversion on Input or Output. Sample Rate
Convert (SRC) is configured in the Pro Tools
Hardware Setup dialog (
Input
Indicates HD MADI Sample Rate Convert
Setup > Hardware).
on Input is active.
Output
Indicates HD MADI Sample Rate Con-
vert on Output is active.
AES/EBU
Indicates that AES/EBU is being used
as the clock source for the MADI ports when using Sample Rate Conversion (SRC). If AES/EBU
is selected as the
Clock Source for Sample Rate
Conversion in the Hardware Setup dialog, but
no valid word clock is detected, the AES/EBU
LED blinks on and off until a valid clock source
is selected.
Word Clock
Indicates that the dedicated (SRC)
Word Clock ports are being used as the clock
source for the MADI ports when using Sample
Rate Conversion (SRC). If Word Clock is selected as the external sync format for Sample
Rate Convert in the Hardware Setup dialog, but
no valid word clock is detected, the AES/EBU
LED blinks on and off until a valid clock source
is selected.
The Signal Present LEDs indicate signal for Input and Output. The top LED indicates input
and the bottom LED indicates output.
Input
Lights when signal is being passed to
Pro Tools from the MADI input ports.
Output
Lights when signal is being passed from
Pro Tools to the MADI output ports.
Chapter 2: HD MADI Overview 7
HD MADI Back Panel
MADI OPTICAL 1
INOUT
MADI COAXIAL 1
OUTIN
MADI OPTICAL 2
INOUT
MADI COAXIAL 2
OUTIN
PORT 1PORT 2
SRC AES/EBU
AC ~ 100-240V;50-60HZ; .5A
SRC WORD CLOCK WORD CLOCK LOOP SYNC
IN
OUT
IN 1
IN 2
HD MADI back panel
MADI Optical In and Out
HD MADI provides 2 sets of MADI Optical In
and Out ports. Using high-quality optical cable,
connect these ports to the corresponding MADI
optical inputs and outputs of MADI-compatible
audio equipment (such as routers, digital mixing consoles, and converters).
The maximum length for MADI optical
cables is 2 kilometers (SC FDDI fiber-optic
cable).
MADI Coaxial In and Out
HD MADI provides 2 sets of MADI Coaxial In
and Out ports. Using high-quality coaxial cable,
connect these ports to the corresponding MADI
coaxial inputs and outputs of MADI-compatible
audio equipment (such as routers, digital mixing consoles, and converters).
HD MADI supports 75 Ohm coaxial (BNC)
cable (such as Belden 1855 and 1694 type).
The maximum length for copper MADI
coaxial cables is 100 meters.
Number of Channels
For Pro Tools sessions at 44.1 and 48 kHz, up to
64 channels of MADI Optical I/O are available
through each set of inputs (Optical or Coaxial).
At higher sample rates, both sets can be used to
achieve up to 64 channels of MADI Optical or
Coaxial I/O as shown in the following table.
Channels of HD MADI by port (optical or coaxial) and
sample rate
HD MADI inputs can stream in at any sample
rate and be converted to the current Pro Tools
session sample rate using hardware-based realtime sample-rate conversion (SRC). SRC is also
supported on output.
HD MADI Guide8
Primary DigiLink Mini Ports
DigiLink Mini Adapters
HD MADI provides 2 Primary DigiLink Mini
Ports. The Primary port is where the DigiLink
Mini cable connects HD MADI to an HD Native
or Pro Tools|HD card. Each Primary port sends
and receives up to 32 channels to and from the
card to which it is connected.
DigiLink Mini Cables and Adapters
Avid provides various cables and adapters to
connect Avid HD audio interfaces to HD Native
and Pro Tools|HD cards.
For more information about DigiLink Mini
cables and adapters, visit the Avid website
(www.avid.com).
DigiLink Mini Cables
Use DigiLink Mini cables to connect HD MADI
to an HD Native card.
There are five different lengths of DigiLink Mini
cables:
• 18” (0.46m) (sold separately)
• 12’ (3.6m) (2 included with HD MADI)
• 25’ (7.62m) (sold separately)
• 50’ (15.25m), the maximum length supported for 176.4 kHz and 192 kHz sessions
(sold separately)
• 100’ (30.5m), the maximum length supported by 88.2 kHz and 96 kHz sessions
(sold separately)
Use DigiLink cables with DigiLink Mini adapters to connect to connect HD MADI to
Pro Tools|HD cards.
There are two types of DigiLink Mini adapters:
• 12” DigiLink Mini female to DigiLink male
• 12” DigiLink Mini male to DigiLink female
SRC AES/EBU
A single female AES/EBU port (clock input only)
is provided for synchronizing to an external
AES/EBU digital clock source when using MADI
Sample Rate Conversion (SRC) on output. This
can be configured in the Pro Tools Hardware
Setup dialog.
SRC Word Clock In 1 & 2
The SRC Word Clock In ports 1 & 2 are standard
BNC connector that provides Word Clock input
for synchronizing to an external Word Clock
digital clock source when using MADI Sample
Rate Conversion (SRC) on MADI output. This
can be configured in the Pro Tools Hardware
Setup dialog.
Word Clock In & Out
The Word Clock In and Out ports are standard
BNC connectors that receive and output word
clock signal. These ports can be used to synchronize HD MADI with any word clock-capable device.
Chapter 2: HD MADI Overview 9
The External Clock In is configured by your
choice for Clock Source in the Hardware Setup
dialog. The External Clock Out is configured using the External Clock Output selector in the
Hardware Setup dialog.
Because the Loop Sync and Word Clock
ports pass crucial timing information, use
high-quality 75-ohm coaxial cables.
LOOP SYNC In and Out
Loop Sync is a dedicated clock loop for synchronizing multiple Avid HD peripherals together
(such as a SYNC HD and one or more audio interfaces). Loop Sync uses a word clock signal
based on sample rates of either 44.1 kHz or
48 kHz. As sample rate increases in the system,
Loop Sync operates at 1x, 2x, or 4x the base rate
of 44.1 kHz or 48 kHz.
The Loop Sync In and Out ports are standard
BNC connectors that output a 1x Word clock signa l. Loop Sync sh ould o nly be us ed to ch ain mul tiple Avid HD peripherals together.
AC Power
This connector accepts a standard AC power cable. HD MADI is auto power-selecting (100V to
240V) and will automatically work with a standard modular cable to connect to AC power receptacles in any country.
HD MADI Guide10
Chapter 3: Connecting HD MADI
HD MADI provides up to 64-channels of digital
I/O with Avid HD Native or Pro Tools|HD hardware.
HD Native
With HD Native hardware, HD MADI
is connected to the HD Native card using 2 DigiLink Mini cables. See “Connecting HD MADI
to an HD Native Card” on page 12.
For more information about installing the
HD Native card, see the HD Native Install
Guide.
Pro Tools|HD
With Pro Tools|HD hardware,
HD MADI is connected to a Pro Tools|HD card
using a DigiLink cable with a DigiLink to DigiLink Mini adapter. For full 64-channel support, two Pro Tools|HD cards are required. See
“Connecting HD MADI to Pro Tools|HD Cards”
on page 14.
For more information about installing
Pro Tools|HD cards, see the Pro Tools|HD
User Guide.
Rack Mounting HD Audio Interfaces
HD MADI and all Avid HD audio interfaces need
room at their sides to maintain proper air flow
for cooling. Do not block the sides of the unit or
disconnect the internal fan. If the units are rackmounted in a case, remove the case lids or doors
before operating the system. Failure to do so can
result in the units overheating very quickly,
which can permanently damage sensitive components.
Chapter 3: Connecting HD MADI 11
Connecting HD MADI to an HD Native Card
You can get a full 64 channels of I/O with HD MADI connected to an HD Native card using two
DigiLink Mini cables. However, HD MADI will be the only audio interface in the system.
To connect HD MADI to an HD Native card:
1 Connect HD MADI Primary Port 1 to DigiLink Mini Port 1 on the HD Native card with the included
DigiLink Mini cable.
2 Connect HD MADI Primary Port 2 to DigiLink Mini Port 2 on the HD Native card with the included
DigiLink Mini cable.
PORT 1PORT 2
Figure 1. HD MADI connected to DigiLink Mini Ports 1 and 2 of an HD Native card (64-channel system)
HD MADI Guide12
Connecting Loop Sync
PORT 1PORT 2
If you are using two (or more) Pro Tools audio interfaces or a SYNC peripheral, Loop Sync must be
connected to maintain proper clock synchronization among the devices. For examples that include a
SYNC peripheral, see the SYNC HD Guide. For an example of connecting multiple audio interfaces, see
Figure 2 below.
To make Loop Sync connections:
1 Connect the Loop Sync Out of each interface to the Loop Sync In of the next interface with the BNC
cables included in your audio interface.
2 Connect the Loop Sync Out of the last interface to the Loop Sync In of the primary interface or SYNC
peripheral.
Figure 2. DigiLink and Loop Sync connections with HD OMNI (top), HD MADI (below), and an HD Native card
(right) (48-channel system)
Chapter 3: Connecting HD MADI 13
Connecting HD MADI to Pro Tools|HD Cards
12-foot DigiLink cables
Pro Tools|HD Accel card
Pro Tools|HD Accel Core card
with DigiLink to DigiLink
Mini adapters
You can get a full 64 channels of MADI I/O with HD MADI connected to two Pro Tools|HD cards
using two DigiLink Mini cables. If you have more than two Pro Tools|HD cards in your system (such
as with a Pro Tools|HD 3 Accel system), you can connect additional Avid HD audio interfaces (such
as HD I/O or HD OMNI).
To connect HD MADI to a Pro Tools|HD 2 or greater system:
1 Connect HD MADI Primar y Port 1 to the DigiLink Port on the Pro Tools|HD Accel Core card with a
DigiLink cable and a DigiLink to DigiLink Mini adapter.
2 Connect HD MADI Primary Port 2 to the DigiLink Port on the Pro Tools|HD Accel card with a Di-
giLink cable and a DigiLink to DigiLink Mini adapter.
Figure 3. HD MADI connected to DigiLink Ports on a Pro Tools|HD Accel Core card and a Pro Tools|HD Accel card
(64-channel system)
HD MADI Guide14
Connecting Loop Sync
Pro Tools|HD Accel card
Pro Tools|HD Accel Core card
Pro Tools|HD Accel card
If you are using two (or more) Pro Tools audio interfaces or a SYNC peripheral, Loop Sync must be
connected to maintain proper clock synchronization among the devices. For examples that include a
SYNC peripheral, see the SYNC HD Guide. For an example of connecting multiple audio interfaces, see
Figure 4 below.
To make Loop Sync connections:
1 Connect the Loop Sync Out of each interface to the Loop Sync In of the next interface with the BNC
cables included in your audio interface.
2 Connect the Loop Sync Out of the last interface to the Loop Sync In of the primary interface or SYNC
peripheral.
Figure 4. DigiLink and Loop Sync connections between HD OMNI (top), HD MADI (below), and an HD3 system
(right)
Chapter 3: Connecting HD MADI 15
HD MADI Guide16
Chapter 4: Configuring HD MADI in Pro Tools
This chapter explains how to configure
HD MADI in Pro Tools.
For more information about configuring
Pro Tools, see the Pro Tools Reference Guide.
Hardware Setup
In the Hardware Setup dialog, you can set the
default sample rate (if no session is open) and
clock source for your system, as well as access a
range of controls specific to each type of audio
interface connected to you Pro Tools system.
Default Sample Rate
The Sample Rate setting appears as the default
sample rate when you create a new session.
(This setting is available in the Hardware Setup
dialog only when no session is open.)
You can change the sample rate when
creating a new Pro Tools session by
selecting a different sample rate in the
New Session dialog.
To change the default Sample Rate for new
sessions:
1 If a Pro Tools session is currently open, close
it.
2 Choose Setup > Hardware.
Hardware Setup dialog, HD MADI (Port 1 shown)
3 From the Sample Rate pop-up menu , se lect the
sample rate that you want.
4 Click OK.
High Sample Rates and Expanded
Pro Tools|HD Systems
With 176.4 kHz and 192 kHz sample rates, as
many as four Pro Tools|HD cards can be used.
Any additional cards (up to the total system
maximum of seven cards) will switch to Inactive
mode. The cards and any attached peripherals
will become active again when the sample rate is
set to 96 kHz or lower.
Chapter 4: Configuring HD MADI in Pro Tools 17
Clock Source
Identify
The Pro Tools Hardware Setup dialog lets you
select the Clock Source for your Pro Tools system.
Internal
If you are recording an analog signal directly into Pro Tools, you will usually use the
Pro Tools
External
Internal clock source.
If you are transferring material into
Pro Tools from an external digital device, or if
you utilize a common house clock signal, you
will synchronize Pro Tools to that digital device
or common signal. The external options for HD
MADI are dependant on the sample rate and include:
Available Clock Sources for HD MADI
44.1/48 kHz88.2/96 kHz176.4/192 kHz
SYNC/SYNC
HD (if present)
InternalInternalInternal
MADI INMADI INMADI IN
Word Clock
(44.1/48 kHz)
SYNC/SYNC
HD (if present)
Word Clock
(44.1/48 kHz)
Word Clock
(96 kHz)
SYNC/SYNC
HD (if present)
Word Clock
(44.1/48 kHz)
Word Clock
(176.4/192 kHz)
If you have multiple audio interfaces of the same
type connected to your system, you should confirm the identity of each interface. This ensures
that you select the appropriate interface in the
Peripherals list when defining its inputs and
outputs, and other settings, in the Hardware
Setup dialog.
To identify audio interfaces in your system:
1 Choose Setup > Hardware.
2 From the Peripherals list, select an audio in-
terface connected to your system.
Use the Up and Down Arrow keys to scroll
though the Peripherals list in the Hardware
Setup dialog.
3 Select the Identify option, located in the lower
left corner of the Hardware Setup dialog. This illuminates all the LEDs on the front panel of the
selected audio interface.
4 Make a note of which interface in your studio
setup corresponds to the identified interface.
5 Repeat the above steps for each additional au-
dio interface in your setup.
To select the Clock Source:
1 Choose Setup > Hardware.
2 Choose the clock source from the Clock Source
pop-up menu.
3 Click OK.
Your digital input device must be connected
and powered on for Pro Tools to synchronize
to it. If your input device is not powered on,
leave the Clock Source set to Internal.
HD MADI Guide18
Configuring HD MADI
Coaxial
Select this option to use the Coaxial
MADI ports for input and output.
To configure controls for HD MADI:
1 Choose Setup > Hardware.
2 From the Peripherals list, select either
HD MADI DigiLink 1 or HD MADI DigiLink 2
and configure the options as desired.
HD MADI Hardware Setup
The settings for HD MADI DigiLink 1 and
HD MADI DigiLink 2 are linked, any
changes are global regardless of which is
selected in the Peripherals list.
3 When you are finished, click OK.
HD MADI Hardware Setup
Options
HD MADI provides a single page of Hardware
Setup options. These settings determine which
physical MADI ports are used, MADI routing,
and whether or not sample rate conversion is
applied to MADI input and output.
Physical MADI
The Physical MADI setting lets you select the
physical MADI I/O ports for HD MADI input
and output.
MADI Routing
The MADI Routing setting lets you choose be-
Normal or Split MADI input routing
tween
options.
Normal
Uses just the first Physical MADI port
(Optical 1 or Coaxial 1) for MADI input. The
number of available input channels varies depending on the sample rate (see Table 1 on
page 20).
Split
Uses both of the currently-selected Physi-
cal MADI ports (Optical 1 and 2 or Coaxial 1 and
2) for MADI input. The number of available input channels varies with sample rate (see
Table 1 on page 20). At 88.2 or 96 kHz, channels
are routed across two 32-channel groups for
connecting to DigiLink Mini ports 1 and 2. At
176.4 or 192 kHz, all channels appear in Pro
Tools on MADI DigiLink 1.
MADI Channel Count
The MADI Channel Count setting lets you choose
between Standard channel modes or Varispeed
channel modes.
Full Channel Count (64)
Select this option for up
to 64 channels of MADI I/O without varispeed.
The number of available channels is dependent
on the session sample rate (see Table 1 on
page 20).
Varispeed Channel Count (56)
Select this option
for up to 56 channels of MADI I/O with varispeed. The number of available channels is dependent on the session sample rate (see Table 1
on page 20).
Optical
Select this option to use the Optical
MADI ports for input and output.
Chapter 4: Configuring HD MADI in Pro Tools 19
Table 1. Available MADI channels by sample rate
Session
Sample Rate
44.1/48 kHz6456
88.2/96 kHz3228
176.4/192 kHz1614
Full Channel
Count
Varispeed
Channel
Count
When using Varispeed, or when working with
higher sample rates, any unavailable channels
become grayed out in the I/O Setup dialog.
HD MADI VSO Range
When using Varispeed with HD MADI, it is possible to exceed the available bandwidth. When
Varispeed exceeds the maximum frequency for
the current nominal sample rate, audio drops
out. The maximum frequency for Varispeed at
each nominal sample rate is listed in Table 2.
Table 2. Varispeed maximum sample rate limits
Nominal
sample rate
44.1/48 kHz6448.8 kHz
44.1/48 kHz5655.6 kHz
88.2/96 kHz3297.5 kHz
88.2/96 kHz28111.5 kHz
176.4/192 kHz16194.9 kHz
176.4/192 kHz14223.0 kHz
Channel
Count
Maximum
Frequency
Sample Rate Conversion
Input
Enable the Input option to apply sample rate
conversion on input. Select this option if
HD MADI is receiving external MADI sources at
any sample rate other than the Pro Tools Session
sample rate.
Clock Source
Select the desired Clock Source option to set the
clock source for Sample Rate Conversion (SRC)
on input.
SRC Word Clock In 1
Select this option to clock
to the SRC Word Clock In 1 port for SRC.
SRC Word Clock In 2
Select this option to clock
to the SRC Word Clock In 2 port for SRC.
SRC AES/EBU
Select this option to clock to the
SRC AES/EBU port for SRC.
MADI IN
Select this option to clock to the incom-
ing MADI signal (Optical or Coaxial) for SRC.
Word Clock Base Frequency (44.1/48)
Enable this option if you are synchronizing to
Word Clock at either 44.1 kHz or 48 kHz, but
you are receiving input at a sample rate of
88.2 kHz or higher.
Input Rate
Select the correct input sample rate frequency
range for the incoming MADI signal:
• 44.1kHz/48kHz
• 88.2kHz/96kHz
• 176.4 kHz/192 kHz
HD MADI Guide20
Output
Ext. Clock Output
Enable the Output option to apply sample rate
conversion on output. Select this option if
HD MADI is sending to external MADI sources
at any sample rate other than the Pro Tools Session sample rate.
Clock Source
Select the desired Clock Source option to set the
clock source for Sample Rate Conversion (SRC)
on output.
SRC Word Clock In 1
Select this option to clock
to the SRC Word Clock In 1 port for SRC.
SRC Word Clock In 2
Select this option to clock
to the SRC Word Clock In 2 port for SRC.
SRC AES/EBU
Select this option to clock to the
SRC AES/EBU port for SRC.
MADI IN
Select this option to clock to the incom-
ing MADI signal (Optical or Coaxial) for SRC.
Word Clock Base Frequency (44.1/48)
Enable this option if you are synchronizing to
Word Clock at either 44.1 kHz or 48 kHz, but
you are sending at a sample rate of 88.2 kHz or
higher.
Target Output Rate
Select the desired output sample rate frequency
range for the MADI signal target output:
• 44.1kHz/48kHz
• 88.2kHz/96kHz
• 176.4 kHz/192 kHz
If you want to send clock output to other devices
attached to HD MADI, select the appropriate
output from the
The available options for
Ext. Clock Output pop-up menu.
Ext. Clock Output
change depending on the session sample rate.
See the table below for a list of default external
clock settings and available options.
Ext. Clock Output options by sample rate
Sample Rate
(kHz)
44.1 kHzWord Clock
48 kHzWord Clock
88.2 kHzWord Clock
96 kHzWord Clock
176.4 kHzWord Clock
192 kHzWord Clock
Available Ext.
Clock Default
(44.1 kHz)
(48 kHz)
(88.2 kHz)
(96 kHz)
(176.4 kHz)
(192 kHz)
Available Ext.
Clock Option
N/A
N/A
Word Clock
(44.1 kHz)
Word Clock
(48 kHz)
Word Clock
(44.1 kHz)
Word Clock
(48 kHz)
Set T o Default
The Set To Default button restores all settings to
the factory defaults.
Word Clock Base Frequency option is en-
If the
abled, the
the
Target Output Rate setting multiplies
Word Base Frequency (either 44.1 or 48 kHz)
to match the output sample rate range.
Chapter 4: Configuring HD MADI in Pro Tools 21
Pro Tools I/O Setup
This section describes how to configure input,
output, and bus signal paths for HD MADI in the
Pro Tools I/O Setup.
For more information the I/O Setup dialog,
see the Pro Tools Reference Guide.
Closing the I/O Setup Dialog
To close the I/O Setup dialog and save changes:
Click OK.
When you click
OK, Pro Tools checks several
settings for routing validity (to prevent feedback loops).
Opening the I/O Setup Dialog
To open the I/O Setup dialog:
1 Make sure HD MADI is configured properly in
the Hardware Setup dialog (see “Hardware
Setup” on page 17).
2 Choose Setup > I/O.
I/O Setup dialog (Output page with HD MADI shown)
To close the I/O Setup dialog without saving
changes:
Click Cancel.
HD MADI Guide22
HD MADI DigiLink 1 and 2 in the I/O Setup
Since HD MADI supports up to 64 channels of I/O, and each DigiLink port supports up to 32 channels
of I/O, each DigiLink port is represented as 32 channels of MADI I/O in the I/O Setup (see Figure 5).
Figure 5. HD MADI in the I/O Setup with both DigiLink ports connected
Chapter 4: Configuring HD MADI in Pro Tools 23
Varispeed Channel Count and Inactive I/O
Split Mode at 176.4/192 kHz
When Varispeed Channel Count is enabled in the
Hardware Setup, the reduced channel count
results in the highest numbered physical input
and output channels being made inactive. For
example, at 48 kHz with
Count (28)
option enabled, channels 29–32 of
Varispeed Channel
HD MADI DigiLink 1 and channels 61–64 of HD
MADI DigiLink 2 are made inactive.
I/O Setup, Input page with inactive channels
When HD MADI is operating at 176.4 kHz or
192 kHz, the
Split option is enabled automati-
cally. Additionally, in the I/O Setup, both HD
MADI DigiLink ports are represented on the
matrix for HD MADI DigiLink 1. All inputs and
outputs on the matrix for HD MADI DigiLink 2
are greyed out, but the corresponding physical
input and output ports are represented under
HD MADI DigiLink 1.
I/O Setup, Input page at 192 kHz
HD MADI Guide24
Input
Output
The Input page of the I/O Setup lets you configure input signal path names, formats, and
source channel. Multichannel input paths (stereo or greater) can have any number of subpaths. Input names and channel formats are
saved with the system.
I/O Setup, Input page
The Output page of the I/O Setup lets you configure output signal path names and formats.
Output names and channel formats are saved
with the system.
I/O Setup, Output page
Unlike other HD audio interfaces (such as HD
I/O), HD MADI physical Input and Output
channel mappings are “hard-coded” (“hardwired”) according to the selected settings for
MADI Routing (Normal or Split), Varispeed
(number of available channels), and Sample
Rate (number of available channels).
Chapter 4: Configuring HD MADI in Pro Tools 25
Bus
Insert
The Bus page lets you configure internal and
output bus signal path names and formats, and
map output busses to output paths (defined on
the Output page). Multichannel busses (stereo
or greater) can have any number of sub-paths.
Output bus and internal mix bus names and
channel formats are saved with the session. Output bus paths to output channel mappings are
automatically generated depending on the defined session output bus paths and the available
system output channel paths.
I/O Setup, Bus page
The Insert page of the I/O Setup lets you name
Hardware Inserts that you may have connected
to your Pro Tools audio interface.
I/O Setup, Insert page
Mic Preamps
The Mic Preamps page of the I/O Setup is used
for configuring hardware connections with a
PRE peripheral (if present). PRE requires an analog to MADI converter to connect to HD MADI.
H/W Insert Delays
The H/W Insert Delays page of the I/O Setup is
used for compensating for the delay (latency) of
any Hardware Inserts.
HD MADI Guide26
Appendix A: Compliance Infor m ation
Environmental Compliance
Disposal of Waste Equipment by Users
in the European Union
This symbol on the product or its packaging indica tes that this
product must not be disposed of with other waste. Instead, it
is your responsibility to dispose of your waste equipment by
handing it over to a designated collection point for the
recycling of waste electrical and electronic equipment. The
separate collection and recycling of your waste equipment at
the time of disposal will help conserve natural resources and
ensure that it is recycled in a manner that protects human
health and the environment. For more information about
where you can drop off your waste equipment for recycling,
please contact your local city recycling office or the dealer
from whom you purchased the product.
Proposition 65 Warning
This product contains chemicals, including lead,
known to the State of California to cause cancer and
birth defects or other reproductive harm. Wash
hands after handling.
Perchlorate Notice
This product may contain a lithium coin battery. The State of
California requires the following disclosure statement:
“Perchlorate Material – special handling may apply, See
www.dtsc.ca.gov/hazardouswaste/perchlorate.”
Recycling Notice
Appendix A: Compliance Information 27
EMC (Electromagnetic
N1709
Compliance)
Avid declares that this product complies with the following
standards regulating emissions and immunity:
• FCC Part 15 Class A
• EN55103-1 E4
• EN55103-2 E4
• AS/NZS CISPR 22 Class A
• CISPR 22 Class A
FCC Compliance for United States
Communication Statement
Note: This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when
the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference in which case the user will be required to
correct the interference at his own expense.
Any modifications to the unit, unless expre ssly approved by
Avid, could void the user's authority to operate the
equipment.
Argentina Conformity
Australia and New Zealand EMC
Regulations
Canadian Compliance
This Class A digital apparatus meets all requirements of the
Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les
exigences du Règlement sur le material brouilleur du Canada.
European Union Declaration of
Conformity
(EMC and Safety)
Avid is authorized to apply the CE (Conformité Europénne)
mark on this compliant equipment thereby declaring
conformity to EMC Directive 2004/108/EC and Low Voltage
Directive 2006/95/EC.
Korean EMC Regulations
HD MADI Guide28
Safety Compliance
Safety Statement
This equipment has been tested to comply with USA and
Canadian safety certification in accordance with the
specifications of UL Standards: UL60065 7th /IEC 60065 7th
and Canadian CAN/CSA C22.2 60065:03. Avid Inc., has been
authorized to apply the appropriate UL & CUL mark on its
compliant equipment.
Warning
Important Safety Instructions
1) Read these instruction s .
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this equipment near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accord ance
with the manufacturer’s instructions.
8) Do not install near any heat sources such as radiators, heat
registers, stoves, or other equipment (including amplifiers)
that produce heat.
9) Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades with one
wider than the other. A grounding type plug has two blades
and a third grounding prong. The wide blade or the third prong
are provided for your safety. If the provided plug does not fit
into your outlet, consult an electrician for replacement of the
obsolete outlet.
10) Protect power cords from being walked on or pinched
particularly at plugs, convenience receptacles, and the point
where they exit from the equipment.
11) Only use attachments/accessories specified by the
manufacturer.
12) For products that are not rack-mountable: Use only with a
cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the equipment. When a cart is
used, use caution when moving the cart/equipment
combination to avoid injury from tip-over.
13) Unplug this equipment during lightning storms or when
unused for long periods of time.
14) Refer all servicing to qualified service personnel. Servicing
is required when the equipment has been damaged in any
way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the e quipment, the
equipment has been exposed to rain or moisture, does not
operate normally, or has been dropped.
15) For products that are a Mains powered device:
The equipment shall not be exposed to dripping or splashing
and no objects filled with liquids (such as vases) shall be
placed on the equipment.
Warning! To reduce the risk of fire or electric shock, do not
expose this equipment to rain or moisture.
16) For products containing a lithium battery:
CAUTION! Danger of explosion if battery is incorrectly
replaced. Replace only with the same or equivalent type.
17) For products with a power switch:
The main power switch is located on the front panel of the
HD MADI. It should remain accessible after installation.
18) The equipment shall be used at a maximum ambient
temperature of 40° C.