Avid Technology HD I/O Specifications

192 Digital I/O
Guide
Digidesign
2001 Junipero Serra Boulevard
Daly City, CA 94014-3886 USA
tel: 650·731·6300
fax: 650·731·6399
Technical Support (USA)
650·731·6100
650·856·4275
Product Information (USA)
650·731·6102
800·333·2137
International Offices
Visit the Digidesign Web site
for contact information
Web Site
www.digidesign.com
Copyright
This guide is copyrighted ©2002 by Digidesign, a division of
Avid Technology, Inc. (hereafter “Digidesign”), with all rights
reserved. Under copyright laws, this manual may not be
duplicated in whole or in part without the written consent of
Digidesign.
DIGIDESIGN, AVID and PRO TOOLS are trademarks or
registered trademarks of Digidesign and/or Avid Technology,
Inc. All other trademarks are the property of their respective
owners.
All features and specifications subject to change without
notice.
PN 910610233-00 04/02
Important Safety Instructions
When using electric or electronic equipment, basic precautions
should always be followed, including the following:
• Read all instructions before using this equipment.
• To avoid the risk of shock, keep this equipment away from
rain water, and other moisture. Do not use this equipment
if it is wet.
• The equipment should only be connected to the correct
rating power supply as indicated on the 192 Digital I/O.
• Do not attempt to service the equipment. There are no
user-serviceable parts inside. Please refer all servicing to
authorized Digidesign personnel.
• Any attempt to service the equipment will expose you to a
risk of electric shock, and will void the manufacturer’s
warranty.
Communications & Safety Regulation Information
Compliance Statement
The model 192 Digital I/O complies with the following
standards regulating interference and EMC:
• FCC Part 15 Class A
• EN55103 – 1, environment E4
• EN55103 – 2, environment E4
• AS/NZS 3548 Class A
Radio and Television Interference
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.
Communications Statement
This equipment has been tested to comply with the limits for a
Class A digital device. Changes or modifications to this
192 Digital I/O not authorized by Digidesign, Inc., could void
the Certification and negate your authority to operate the
192 Digital I/O. This 192 Digital I/O was tested for CISPR
compliance under conditions that included the use of
peripheral devices and shielded cables and connectors
between system components. Digidesign recommends the
use of shielded cables and connectors between system
components to reduce the possibility of causing interference
to radios, television sets, and other electronic devices.
Safety Statement
This equipment has been tested to comply with USA and
Canadian safety certification in accordance with the
specifications of UL Standards; UL1419 and Canadian CSA
standard; CSA C22.2 No.1-M90. Digidesign Inc., has been
authorized to apply the appropriate UL & CUL mark on its
compliant equipment.
Warning!
• HD audio interfaces need room at their sides to maintain
proper air flow and cooling.
• Do not install these units into a rack or other enclosure that
doesn't leave room on either side for the unit fans.
• Do not block the sides of the units (where fans are), or
disconnect the fan.
• If the units are racked up in a case, remove all lids, doors,
or covers before operating the units.
• Failure to do so can result in the units overheating very
quickly, which can permanently damage them.
contents
Chapter 1. Introduction to the 192 Digital I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
192 Digital I/O Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
What’s Included . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter 2. 192 Digital I/O Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
192 Digital I/O Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
192 Digital I/O Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DigiLink Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 3. Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Checking Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Powering Up Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Hardware Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Multiple Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Synchronization Mode and Clock Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Removing an I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Hardware Setup Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Replacing an I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
AES/EBU DB-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
TDIF DB-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Contents
iii
iv
192 Digital I/O Guide
chapter 1
Introduction to the 192 Digital I/O
The Digidesign 192 Digital I/O is a 16-channel,
all-digital audio interface for use in a
Pro Tools|HD system. The 192 Digital I/O supports the major digital audio I/O formats
(AES/EBU, S/PDIF, ADAT Lightpipe, and TDIF)
and sampling rates of up to 192 kHz.
192 Digital I/O Features
• 16 discrete channels of digital input and output, with 4-segment LED meters to monitor
input and output levels on each channel
• Real-time sample rate conversion (up to
192 kHz) of up to eight different pairs of input
formats and sample rates
• Input format can be chosen, in two channel
granularity, from the following format types
provided on two factory-installed Digidesign
Digital I/O cards:
• 16 channels of 24-bit AES/EBU I/O at sampling rates of up to 96 kHz in single-wire
mode; or 8 channels at sampling rates of up
to 192 kHz in dual-wire mode
• 16 channels of 24-bit TDIF I/O at sampling
rates of up to 48 kHz
• 16 channels of 24-bit Optical (ADAT) I/O at
sampling rates of up to 48 kHz
• Additional digital I/O options are provided by
three sets of enclosure-mounted ports:
• Two additional channels of 24-bit-capable
S/PDIF I/O, supporting sample rates of up
to 96 kHz
• Two additional channels of 24-bit-capable
AES/EBU I/O, supporting sample rates of
up to 96 kHz
• Eight additional channels of 24-bit-capable
ADAT Optical I/O, at up to 48 kHz sample
rates; can be switched to become two channels of optical S/PDIF I/O, supporting sample rates of up to 96 kHz
• Word Clock input and output for synchronizing 192 Digital I/O with external Word Clock
or 256x (Slave Clock) devices
• Legacy Port for connecting Digidesign MIXseries audio interfaces
• Simultaneous use of up to eight 192 I/O or
192 Digital I/O units, for a maximum of 128
channels of input, supporting sample rates of
up to 96 kHz.
• 128 channels of input at sample rates of
176.4 kHz or 192 kHz requires Sample Rate
Conversion for TDIF or Optical (ADAT) inputs
• AES/EBU I/O at sample rates higher than
96 kHz is limited to 64 channels of input)
Chapter 1: Introduction to the 192 Digital I/O
1
What’s Included
• 192 Digital I/O with power cable
• This guide
• DigiLink cable (1.5ft. [0.46m])
• BNC cable (1.5ft. [0.46m])
System Requirements
The Digidesign 192 Digital I/O requires:
• A Pro Tools|HD system on a qualified Macintosh or Windows computer
• Pro Tools software, version 5.3 R3 or higher
About This Guide
This guide provides a basic overview of the
192 Digital I/O’s features and functionality.
This guide also provides basic installation instructions for adding a 192 Digital I/O to an existing Pro Tools|HD system.
For more detailed installation instructions, or if
you are connecting and configuring a
Pro Tools|HD system for the first time, see the
Getting Started with HD Guide.
For additional information about using
Pro Tools, see the Pro Tools Reference Guide.
2
192 Digital I/O Guide
Conventions Used in This Guide
Digidesign guides use the following conventions to indicate menu choices and key commands:
Convention
Action
File > Save Session
Choose Save Session
from the File menu
Control+N
Hold down the Control
key and press the N key
Option-click
Hold down the Option key
and click the mouse button
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 session data or the performance of your system.
Cross References point to related sections in
this and other Digidesign Guides.
chapter 2
192 Digital I/O Overview
192 Digital I/O Front Panel
The 192 Digital I/O has the following front
panel features:
192 Digital I/O front panel
Power Switch and LED Ring
Loop Master LED
This button turns the 192 Digital I/O on and
off. The LED ring around the power button will
light green to indicate that the unit has powered
up successfully and is connected to an active HD
system. If the LED ring is orange, the unit has
power, but the computer it is connected to is
shut down.
The Loop Master LED indicates which HD audio
interface is the master Pro Tools peripheral.
Loop Master defaults to the first HD I/O connected to the HD Core card. Loop Master will always be lit with a single interface.
Sample Rate
These LEDs display the current sample rate of
the 192 Digital I/O internal crystal oscillator,
which can be set to 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 Hardware Setup or Playback Engine dialogs if no session is open.
Chapter 2: 192 Digital I/O Overview
3
192 Digital I/O front panel
Sync Mode LEDs
Meters
The Sync Mode LEDs indicate different clock
source modes for each I/O (as set with the Clock
Source choice in Pro Tools Hardware Setup dialog).
These four-segment LEDs indicate signal level
for each of the sixteen channels. The top row of
meters indicates input levels, and the bottom
row shows output levels. These meters are calibrated at –42 dB, –18 dB, –6 dB, and 0 dB, respectively.
Only one HD I/O can be Loop Master at a time.
When you change the clock source to an external clock on a particular HD I/O, that HD I/O
will automatically become the Loop Master and
all other HD I/Os in the chain will be switched
to Loop Slave mode. The Loop Master LED will
be lit on the current Loop Master peripheral
only, and unlit on all other peripherals.
For more information, see “Synchronization
Mode and Clock Source” on page 16.
4
192 Digital I/O Guide
Note that 0 dB is not to be confused with
clipping; use the on-screen meters in
Pro Tools to determine whether a signal is
clipping. See the Pro Tools|HD Reference
Guide.
192 Digital I/O Rear Panel
The 192 Digital I/O has the following rear panel
features:
Bay 1: Digital I/O Card (Channels 1–8)
Enclosure Ports
Bay 2: Digital I/O Card (Channels 9–16)
192 I/O rear panel
Inputs and outputs are provided by the two Digital I/O Cards, and the built-in Enclosure ports.
The two empty bays (located in the middle of
the rear panel) are not expandable.
The TDIF and ADAT outputs will output up to
48 kHz. The AES/EBU output can output supported sample rates from 44.1 kHz to 192 kHz.
About Real-Time Sample Rate Conversion
Digital I/O Cards
The 192 Digital I/O features two Digital I/O
cards with identical sets of input and output
ports. Each card handles eight of the 16 total
available channels of I/O. The top card (Bay 1)
handles I/O channels 1–8. The bottom card
(Bay 2) handles channels 9–16.
The inputs on the Digital I/O card feature realtime sample rate conversion. For example, you
can stream audio with a sample rate of 44.1 kHz
into a 96 kHz session. See “Digital Format Settings and Sample Rate Conversion” on page 14.
Input is provided through DB-25 connectors for
AES/EBU and TDIF inputs, along with a pair of
ADAT optical ports. See Appendix B, “Pinout Diagrams for the DB-25 Connectors.”
Each set of inputs on the Digital I/O cards can
stream in at any sample rate and be converted to
the current Pro Tools session sample rate via
hardware-based real-time sample-rate conversion chips.
Sample rate conversion is selectable on a channel pair basis. When disabled, digital information completely bypasses the sample-rate conversion chips.
Digital Formats
AES/EBU Each card contains DB-25 connectors
for eight channels of AES/EBU I/O. Each of the
four paired channels of AES/EBU on each card is
a balanced three-conductor signal that supports
single wire I/O up to 96 kHz and dual wire I/O
up to 192 kHz.
Chapter 2: 192 Digital I/O Overview
5
For AES/EBU input, each Digital I/O card can accept up to 192 kHz and downsample the information to any other supported sample rate. See
“Digital Format Settings and Sample Rate Conversion” on page 14.
Enclosure Connectors
Dual-Wire mode uses two pins to transmit a single channel, or four pins to transmit two channels of digital audio. Dual-wire is only supported via the DB-25 AES/EBU connector.
The connectors feature a two-channel S/PDIF
port, two additional channels of AES/EBU I/O
and another eight channels of Optical I/O.
These ports are hardwired to the 192 Digital I/O
chassis and appear on-screen in the Pro Tools
pop-up menus as AES/EBU [Encl], SPDIF [Encl],
and Optical (ADAT) [Encl]. The reference to the
enclosure [Encl] differentiates the chassismounted ports from the I/O of the same types
on the Digital I/O card.
Four channels of AES/EBU I/O are available at
192 kHz per card or eight channels using both
AES/EBU connectors.
TDIF Each card contains DB-25 connectors for
eight channels of TDIF input and output. This
port conforms to standard eight-channel TDIF
pinouts. See Appendix B, “Pinout Diagrams for
the DB-25 Connectors.”
Optical (ADAT) Each card contains a pair of dedicated, eight-channel 24-bit capable Optical
ports for input and output, respectively.
These outputs will only output at sampling rates
of up to 48 kHz. Unlike the Optical port located
on the enclosure, this Optical (ADAT) port is not
switchable to Optical S/PDIF.
About Lightpipe-Compatible Devices
Lightpipe is an industry standard, eight-channel
optical digital audio connection created by Alesis. Lightpipe is found on many devices, including Optical (ADAT) decks, modular digital multitracks (MDMs), sound cards, A/D or D/A
converters, and digital consoles.
6
192 Digital I/O Guide
The right half of the back panel of the
192 Digital I/O features a set of non-removable
Enclosure connectors.
Also mounted on the enclosure are synchronization ports and connectors for installing the
192 Digital I/O to your HD system and attaching other Digidesign I/Os.
AES/EBU Digital In and Out
These are an additional pair of balanced, threeconductor XLR connectors that accept and output a stereo, 24-bit AES/EBU digital data stream
at sample rates of up to 96 kHz.
Unlike the Digital I/O card AES/EBU ports, the
enclosure AES/EBU ports do not support dualwire mode or provide real-time sample rate conversion.
S/PDIF Digital In and Out
EXT. CLOCK In and Out
These are an additional pair of unbalanced, twoconductor RCA jacks that accept and output a
stereo S/PDIF digital data stream. S/PDIF supports up to 24-bit audio, at sample rates up to
96 kHz. To avoid RF interference during S/PDIF
transfers, use 75-ohm coaxial cable.
The External Clock I/O ports are standard BNC
connectors that receive and output word clock.
These ports can be used to synchronize the
192 Digital I/O with any word clock-capable device.
Optical (ADAT) In and Out
These Optical ports can be configured to function as two channels (stereo) Optical S/PDIF or
as a third set of eight channels of Optical
(ADAT) input and output.
In Optical S/PDIF mode, these ports support
two-channel Optical input and output at sample rates up to 96 kHz. In Optical (ADAT) mode,
sample rates above 48 kHz are not supported;
unlike Optical (ADAT) ports on the Digital I/O
cards, these Optical (ADAT) do not feature realtime sample rate conversion.
LOOP SYNC In and Out
Loop Sync is a dedicated clock loop for synchronizing multiple HD-series interfaces together.
Loop Sync uses a word clock signal based on
sampling rates of either 44.1 kHz or 48 kHz. As
sample rates increase in the system, Loop Sync
continues to operate at a base rate of 44.1 kHz or
48 kHz, depending upon the higher rate.
The Loop Sync In and Out ports are standard
BNC connectors that output a 1x Loop Sync
clock signal. Loop Sync should only be used to
chain multiple HD-series peripherals together.
The External Clock In port is configured by your
choice for Clock Source in the Hardware Setup
dialog. The External Clock Out is configured using the External Clock Out selector in the Hardware Setup dialog.
Because crucial timing data is passed
through the Loop Sync and Word Clock ports,
you should use high-quality, 75-ohm RG–59
cables for making connections.
AC Power
This connector accepts a standard AC power cable. The 192 Digital I/O 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.
Primary DigiLink
This port is the main audio connection between
the 192 Digital I/O and Pro Tools. The Primary
DigiLink port supports 32 channels of I/O, 16 of
which are routed directly to and from the Expansion or Legacy ports. See “Guidelines for
DigiLink Connections” on page 9.
Expansion DigiLink
The Expansion port lets you attach an additional HD-series I/O to the 192 Digital I/O. This
port passes channels 17–32 to the secondary, or
Expansion, I/O.
Chapter 2: 192 Digital I/O Overview
7
Legacy Port
This port is used to connect MIX-series Digidesign audio interfaces to the 192 Digital I/O. You
can connect two eight-channel interfaces (such
as the 888|24 or 882|20) or a single sixteenchannel interface (1622 I/O, 24-bit ADAT Bridge
I/O, or the original ADAT Bridge I/O) for expanded input and output options, using their
original cables.
DigiLink cables make the vital connection between your HD Core or HD Process card and
your HD ports. DigiLink cables are also used to
interconnect multiple HD I/Os together to expand total system I/O.
DigiLink Length Specifications
To connect HD or Legacy audio interfaces, refer
to the Getting Started with HD Guide.
There are five different lengths of DigiLink cables:
Legacy and Expansion Peripheral Port
Limitations
• The 18” (0.46m) cable that is included with
each HD I/O is designed for daisy-chaining
multiple HD audio interfaces.
Because both the Legacy port and the Expansion
port use channels 17–32 of the DigiLink, only
one of the two ports is available at a time.
To select the Legacy or Expansion ports, refer to
the Pro Tools Reference Guide.
The Legacy port is not available for sessions with
the sample rate set for higher than 48 kHz.
Accessory Port
This port is not supported at this time.
8
DigiLink Connections
192 Digital I/O Guide
• The 12’ (3.6m) cable that is included with
each HD Core is designed for connecting the
Core card to an HD I/O.
• The 25’ (7.62m) cable is the same length as
the DigiSnake DB-25 breakout cables used
with ProControl and Control|24.
• The 50’ (15.25m) cable is the maximum
length supported for 192 kHz sessions, and is
sold separately.
• The 100’ (30.5m) cable is the maximum
length supported by 96 kHz sessions. This cable is sold separately.
chapter 3
Installation Overview
Complete instructions for connecting and configuring your Pro Tools|HD system are located
in the Getting Started with HD Guide. If you are
connecting the 192 Digital I/O to a new
Pro Tools|HD system, refer to that guide now.
If you are adding the 192 Digital I/O to an existing Pro Tools|HD system, you will probably find
everything you need to get up and running in
this chapter. Additional information can always
be found in the Getting Started with HD Guide,
and the Expanded Systems Guide.
Connecting the 192 Digital I/O
to an Existing HD System
If you are adding this interface to an existing
Pro Tools|HD system, follow these guidelines:
Turn off your computer, monitoring system,
hard drives, and peripherals. Making connections while power is on can damage your
system.
DigiLink Cable Connections
The DigiLink cable provided with your
192 Digital I/O is 18" long. If you need a 12' or
longer DigiLink cable to connect to the HD Core
or Process card, you must purchase DigiLink cables separately.
Guidelines for DigiLink Connections
In order to allow the higher sampling rate interfaces to work at their full sampling range, you
must use a 192 kHz I/O as the Primary I/O system includes a 192 Digital I/O or 192 I/O, one of
these should be the primary audio interface,
with any additional 192 kHz-supporting peripherals connected next, in order to allow the
higher sampling rate interfaces to work at their
full sampling rate range.
If you are also using a 96 I/O peripheral, connect
it after the last 192 I/O or192 Digital I/O. For
Legacy peripherals, see “Legacy Port” on page 8.
For additional details on the ordering of audio
interfaces in an expanded system, see the Expanded Systems Guide.
If the existing system contains a single 96 I/O
interface:
1 Disconnect the 96 I/O from the HD Core card.
2 Connect the DigiLink cable from the DigiLink
port on the primary HD Core card to the Primary port on the 192 Digital I/O
Chapter 3: Installation Overview
9
3 Connect the DigiLink expansion cable that
came with your I/O from the Expansion port on
the 192 Digital I/O to the Primary port on the
96 I/O.
The 96 I/O does not support 192 kHz, and
you will not be able to run a session at
192 kHz unless a 192 Digital I/O or a
192 I/O is the first interface connected to
the HD Core card.
If the existing system contains a single 192 I/O or
192 Digital I/O:
Because they both support the same sample
rates, you can connect multiple 192 Digital I/Os
or 192 I/Os in any order. Connect the first HD
Process card to the first I/O’s Primary port, and
connect that I/O’s Expansion port to the second
I/O’s Primary Port.
If you already have two 192 Digital I/Os or
192 I/Os connected to your HD Core, connect
the new 192 Digital I/O directly to the first HD
Process card (12' DigiLink cable sold separately).
Connect the DigiLink cable from the Primary
port of the new 192 Digital I/O to the DigiLink
port on the HD Process card.
Loop Sync Connections
with BNC Cable
Loop Sync is a discrete word clock signal used to
keep multiple HD I/Os synchronized with each
other. Only one peripheral at a time in the entire system can serve as Loop Master; by default
this will initially be the HD I/O connected directly to the HD Core card.
You can select any connected HD I/O to be the
Loop Master by choosing a clock source on that
particular HD I/O. Once you set this, all other
peripherals in the chain will automatically be
set for Loop Slave and light the LOOP LED.
10
192 Digital I/O Guide
Because you can select any HD I/O in the chain
to be Loop Master, you can use the digital or External Clock ports for synchronization on any
peripherals.
To connect Loop Sync between two interfaces:
1 Connect the BNC cable from the Loop Sync
Out of the primary HD I/O to the Loop Sync In
of your 192 Digital I/O.
2 Connect the Loop Sync Out from the new
192 Digital I/O to the Loop Sync In of the primary HD I/O.
To connect your 192 Digital I/O into a Loop Sync
chain:
■ Connect the new 192 Digital I/O Loop Sync
In and Out ports to properly place the new interface in the Loop Sync chain. See the Getting
Started with HD Guide for more information.
Checking Installation
This section explains how to check that your installation was successful.
To check installation using DigiTest:
1 Start up your computer (see “Powering Up
Your System” on page 11).
2 Launch DigiTest 5.3.1 or higher.
3 Ensure that all HD cards and HD I/Os are iden-
tified properly. If not, see the Getting Started with
HD Guide.
4 When finished, quit DigiTest and restart.
To check or reconfigure I/O:
1 Start up your computer (see “Powering Up
Your System” on page 11).
2 Launch Pro Tools and choose Setup > Hardware Setup.
3 Select your 192 Digital I/O in the Peripherals
column, and click on the Identify checkbox.
This will confirm that you have properly installed the 192 Digital I/O. You can similarly
identify and verify any other connected HD I/O
units by repeating these steps for each I/O peripheral.
If you encounter any difficulties in confirming or
identifying your 192 Digital I/O:
1 Delete the DigiSetup file (located in System
Folder/Preferences).
2 Power down the computer completely.
3 Turn on your 192 Digital I/O and any other
Pro Tools audio interfaces. On power up, the status LEDs will flash. Wait at least fifteen seconds
for the 192 Digital I/O to initialize, and the status LEDs to stop blinking and stay lit on any and
all audio interfaces. If properly connected, the
ring around the power switch will be orange
while the computer is powered down.
4 Turn on your computer. When the computer
boots, all power LED rings on HD I/Os should
switch to green. This signifies that the I/Os are
properly connected to HD cards or other HD
I/Os in your system.
Legacy audio interfaces will not be available until they have been made active in the Hardware
Setup dialog. See the Getting Started with HD
Guide for information.
Power down your system in this order:
1 Quit Pro Tools.
3 Turn off all interfaces.
2 Shut down the computer.
4 Turn the power on again for each interface.
3 Power off your audio interfaces.
5 Reboot the computer. See “Powering Up Your
System” on page 11 for more information.
4 Turn off any synchronization, MIDI, or other
peripherals or interfaces.
5 Turn off your drives.
Powering Up Your System
In order for Pro Tools to communicate properly
with audio interfaces and other peripherals, it is
important that you start up and shut down your
system in the following order:
Power up your system in this order:
1 Turn on your Pro Tools hard drives.
2 Turn on synchronization or other MIDI peripherals or interfaces.
Chapter 3: Installation Overview
11
Hardware Setup
The Hardware Setup dialog lists all audio interfaces in the system, as well as I/O routing and
clock selections for your HD I/Os. The Hardware
Setup also allows you to set special options
unique to the 192 Digital I/O.
Hardware Setup automatically configures itself
to default settings for each HD-series card and
peripheral it detects. The Hardware Setup dialog
also lets you change default settings, and configure expansion audio interfaces (including Legacy peripherals).
Configuring Hardware Setup
(Audio Interfaces)
The Main tab of the Hardware Setup dialog is
where you define what physical ports are routed
to Pro Tools input and output channels. Think
of this window as a patchbay that allows you to
route any of the physical inputs or outputs to
Pro Tools mixer inputs and outputs.
The Main tab also provides controls for session
Sample Rate, synchronization settings, and to
define whether Expansion port or Legacy port
peripherals are active. Sample Rate can only be
changed when there is no session open.
Additional tabs are available to configure other
parameters on each audio interface (such as setting operating levels).
You must select an HD I/O from the Peripherals
column in order to change settings on a specific
interface in an expanded I/O system.
Hardware Setup dialog with Main tab selected
12
192 Digital I/O Guide
To configure audio interfaces:
1 In Pro Tools, choose Setups > Hardware.
2 From the Peripherals list, select your
192 Digital I/O. If you only have a single
192 Digital I/O in your system, it will already be
selected by default.
3 Make sure Main tab is chosen.
When the Hardware Setup dialog is open,
the Left and Right arrows scroll through the
tabs; the Up and Down arrows scroll
through the Peripherals list.
4 From the Digital Format radio buttons, select
the desired format for the enclosure digital I/O.
Choices include: AES/EBU, S/PDIF, and Optical
(S/PDIF). Selecting Optical (S/PDIF) resets the
Optical I/O port to two channels of S/PDIF, or
TOS-Link, supporting up to 96 kHz. When Optical (S/PDIF) is not selected, this port defaults to
eight channels of Optical (ADAT) I/O.
8 From the Input and Output channel pop-up
menus, select the physical ports (such as Optical
5–6, AES/EBU 1–2, and so on) that will be routed
to the Pro Tools input or output channels (Ch
1–2, 3–4, and so on). You can select default settings at any time by pressing the Set To Default
button on the lower edge of the Hardware Setup
dialog.
Certain functions and paths will be greyed-out
as a result of other selections. For example, the
Optical 1–8 channels will not be available for
session rates of 88.2 kHz or higher.
A labelling convention differentiates between
the 192 Digital I/O's multiple sets of inputs and
outputs for each digital format. For example, the
stereo AES/EBU inputs and outputs that are
mounted on the 192 Digital I/O enclosure are
identified as AES/EBU [Encl]; the 16 channels of
AES/EBU I/O that come on the Digital I/O cards
are listed as AES/EBU 1–2, AES/EBU 3–4, and so
on.
5 From the Clock Source pop-up menu, select
the appropriate clock source for the system. In
most cases, you will use Internal. See “Synchronization Mode and Clock Source” on page 16 for
more information about non-internal clock settings.
6 From the Ext. Clock Output pop-up menu, se-
lect the appropriate clock to feed to devices attached to your I/O. If only HD peripherals are
attached, the 192 Digital I/O will generate standard Word Clock. Slave Clock is automatically
selected when a Legacy peripheral has been declared. See “Clock Source and Loop Master” on
page 16.
7 For S/PDIF compatibility with Tascam DA30
DAT recorders, click to enable the Tascam button.
Chapter 3: Installation Overview
13
Digital Format Settings and
Sample Rate Conversion
The following example shows how to configure an
HD system with one 192 Digital I/O and one
96 I/O in the Hardware Setup dialog:
To configure digital formats and sample rate
conversion:
1 From the Peripherals list, choose the
192 Digital I/O (which must be your primary
I/O for any sample rates higher than 96 kHz). By
default, the Main tab will be selected, and options and controls for the selected I/O will be
available. The expansion interface connected to
the primary I/O will appear below it in the Peripherals column.
1 Click on the Digital tab and select Input Format (AES/EBU, ADAT, or TDIF).
2 Enable real-time Sample Rate Conversion by
selecting channel pairs (1–2, 3–4, 5–6, 7–8) in
the SR Conversion box on the Digital tab.
At session sample rates above 48 kHz, sample rate conversion for the TDIF and Optical
(ADAT) inputs on the Digital I/O card is
automatically enabled on all eight inputs of
the selected format.
2 In the Main page, ensure that Expansion I/O is
selected under Port Settings.This is the default.
3 From the Peripherals list, select your secondary I/O (in this case, the 96 I/O).
4 Configure the Main page and other settings
and options for the secondary peripheral.
Legacy I/O Setup
For details about Legacy I/O Setup, please consult the Getting Started with HD Guide.
Hardware Setup dialog with Digital tab selected
To configure additional interfaces:
Repeat the above steps for additional HD-series I/O in the Peripherals list. To configure the
Main tab of a secondary HD peripheral attached
to a primary HD I/O, you must first choose the
I/O in the Peripherals list.
■
14
192 Digital I/O Guide
Configuring I/O Setup
I/O Setup dialog provides tools to label and map
Pro Tools input, output, bus, and insert signal
paths.
To route Pro Tools channels to multiple
192 Digital I/O outputs:
1 In the Hardware Setup dialog, click the pop-up
menu for the Pro Tools output pair you wish to
multi-assign (for example, 1–2, 3–4, 15–16). By
default, all pairs are assigned to a 192 Digital I/O
output pair; Outputs 1–2 are by default mirrored
to the two-channel Digital [Encl] pairs.
2 Select one of the outputs to which you want
to route the output from Pro Tools.
3 While pressing Control (Macintosh) or the
Start key (Windows), select each additional output destination.
In addition, the I/O Setup dialog, like the Main
tab of Hardware Setup, provides controls for
routing Pro Tools input and output channels to
the physical ports on your 192 Digital I/O.
Selecting multiple output formats does not affect time slot count. The multiplexing of audio
is done in the peripheral rather than in software
or the computer.
Refer to the Pro Tools Reference Guide for
more information on setting up I/O paths.
Multiple Outputs
Pro Tools output channels can be assigned to
multiple hardware outputs of the
192 Digital I/O. You can multi-assign individual
outputs manually in the Mix or Edit windows,
or you can define multiple outputs in Hardware
Setup that are global, and will persist from session to session. You can multi-assign any available 192 Digital I/O outputs in the Hardware
Setup dialog.
Hardware Setup dialog with 192 Digital I/O as the
Primary audio interface with Default settings
Chapter 3: Installation Overview
15
Synchronization Mode and
Clock Source
The 192 Digital I/O lets you synchronize your
Pro Tools|HD system to most digital clock references in use in today's complex, multi-unit production environments.
The Hardware Setup dialog lets you specify
among digital input sources and select a Clock
Source.
Choices for Clock Source vary depending on
Sample Rate and Digital Format (AES/EBU,
S/PDIF, or Optical S/PDIF).
Pro Tools|HD and the 192 Digital I/O give you
multiple clock reference choices at all sample
rates and digital format settings.
To choose a clock source:
4 Click the Clock Source pop-up menu and select a synchronization mode. If the desired clock
is not listed, check your Digital Format settings
in both the Main and Digital tabs to be sure you
have enabled the appropriate digital port and
format. Choices for Clock Source also vary depending on Sample Rate.
5 Click OK to close the Hardware Setup dialog
when you have finished.
Your choice depends on which device in your
setup you want to make the master clock device.
192 Digital I/O can only be the clock source
when it is the master audio interface. If you
choose a clock source on another HD I/O other
than the Loop Master, Pro Tools will automatically designate the new interface as the Loop
MASTER peripheral, switch to it for the chosen
Clock Source, and set all other HD I/Os to Loop
Slave mode.
1 Launch Pro Tools.
2 Choose Setups > Hardware Setup.
3 Select a Digital Format from the enclosure
port choices: AES/EBU, S/PDIF, or Optical
(ADAT). If not using the enclosure ports for
clock, skip this step.
Clock Source and Loop Master
In the Hardware Setup dialog, you can choose a
clock source available from any HD I/O. Choosing to use a Clock Source will, in expanded I/O
systems, automatically make that I/O the Loop
Master. The LOOP MASTER LED will light on
the front of the Loop Master I/O.
Because any HD I/O can be the Loop Master,
you can use any of the digital ports on any HD
I/O as your system clock source.
Digital Format
The Digital Format section enables you to
choose which Enclosure port the 192 Digital I/O
will use for digital audio input. Only one Enclosure digital input port can be used at a time, although the AES/EBU and S/PDIF outputs are mirrored at all times.
16
192 Digital I/O Guide
For example, to record digitally from an optical
S/PDIF device connected to the Enclosure Optical In port, enable the Optical (S/PDIF) option
for Digital Format.
INT (Internal) This is the 192 Digital I/O standard clock setting. In this mode, the
192 Digital I/O sample clock is generated by its
internal crystal oscillator, as determined by the
session Sample Rate.
Clock Source
The Clock Source selector lets you choose
among available digital clock choices to determines which HD-series interface, and which
specific digital port on that interface, is providing clock to Pro Tools. Choices will include 1x at
the session sample rate or base rate (for clocking
to house video reference or other Word clock
signals connected to the External Clock In port),
and other choices as appropriate for the currently enabled Digital Format and sample rate.
Pro Tools will remember your configuration until you change it. If you want to change your
Pro Tools hardware configuration in the future,
you can access these parameters again in the
Hardware Setup dialog. Hardware Setup configurations are stored globally rather than by session.
You will be able to select the sample rate each
time you create a new session.
SYNC MODE Indicators
The SYNC MODE LEDs indicate the current
clock source.
Front panel synchronization mode setting LEDs
DIG (Digital) This setting indicates that an external AES/EBU, TDIF, Optical (ADAT), or S/PDIF
device is providing system clock. If you want to
use an AES/EBU or S/PDIF device as Clock
Source, you will have to select the corresponding Digital Input format. If no valid clock source
is detected, 192 Digital I/O will switch to INT,
the DIG LED will flash, and an error message
will appear on-screen in Pro Tools.
To record from an AES/EBU source, select
AES/EBU for Digital Format and make sure it is
selected as Clock Source.
To connect digitally with other digital devices
that are functioning as more than an input device (such as when sending and returning signals to and from an external digital signal processing device) be sure to set the external digital
device to external clock. This will allow the external digital device to clock off the digital output port you are using on the 192 Digital I/O.
The 192 Digital I/O can function in this way
while in Internal clock mode, or could use a
third device as Clock Source.
You will not be able to use the Optical
(ADAT) port as an eight-channel synchronization source if the radio button for Optical
S/PDIF is selected. Likewise, you must first
select the radio button for Optical S/PDIF in
the Digital Format section if you want to use
the Optical (ADAT) port to synchronize to receive Optical S/PDIF (also known as TOSLink, it supports sampling rates up to
96 kHz).
Chapter 3: Installation Overview
17
If at least two channels are not assigned from
the selected digital port in the Main page of the
Hardware Setup dialog, or if no valid clock
source is detected at this port, 192 Digital I/O
will switch to INT and the DIG LED will flash.
LOOP (Loop Master) This LOOP LED indicates
that the 192 Digital I/O is synchronized to another HD I/O through Loop Sync.
By default, until you select another HD I/O
by selecting its Clock Source, the Loop Master will be the HD I/O connected directly to
the HD Core card.
You do not set LOOP mode anywhere in the
software; this is done automatically when you
choose a particular I/O as LOOP MASTER by selecting a Clock Source from that I/O. Once you
set this, all other peripherals in the chain will
automatically be set for Loop Slave and light the
LOOP LED.
Because you can select any HD I/O in the chain
to be Loop Master, you can use the digital or External Clock ports for synchronization on any
peripherals without having to physically change
any of the synchronization connections.
EXT (External) This setting indicates that
192 Digital I/O is using the EXT CLOCK IN port
for system synchronization. External Clock input and output do not have to be at the same
rate as Word clock.
18
192 Digital I/O Guide
EXT CLOCK IN synchronization will typically
be 1x the current session sample rate. However,
for sample rates higher than 48 kHz,
192 Digital I/O will generate a choice of 1x or a
base rate of 44.1 kHz or 48 kHz, depending upon
the higher rate, as follows:
Session Sample Rate
Word Clock Support
44.1 kHz
44.1 kHz
(256x out only)
48 kHz
48 kHz
(256x out only)
88.2 kHz
88.2 kHz
44.1 kHz
96 kHz
96 kHz
48 kHz
176.4 kHz
176.4 kHz
44.1 kHz
192 kHz
192 kHz
48 kHz
For a more detailed explanation of synchronization mode and External Clock issues, see the
Getting Started with HD Guide.
appendix a
Card Removal and Replacement
Removing an I/O Card
In the event of a problem with either of the digital I/O cards in your 192 Digital I/O, you can remove the card and send it to Digidesign for repair.
The modular nature of the HD system allows
you to simply return the specific card, instead of
the entire 192 Digital I/O. Your HD system will
continue to function while missing a single
card. It will not function if more than one of the
factory-installed cards is removed.
Before handling any of the cards or internal
components of 192 Digital I/O, discharge
any static electricity by touching the outer
casing of the power supply.
5 Gently pull the 50-pin connector off of the
edge of the card.
When you pull a card out, pay particular attention to keeping components on the surfaces of the card from bumping into any of
the internal components or the back panel
faceplate on the 192 Digital I/O.
6 Pull the card out by gripping the edges between your thumb and forefinger on each side.
Pull straight back, lifting very slightly to avoid
contact between components on the underside
of the card and the 192 Digital I/O back panel
faceplate.
To remove an I/O card from the 192 Digital I/O:
1 Power off and disconnect the 192 Digital I/O
from your HD system.
2 Make sure that the equipment is properly
grounded.
3 Remove the top cover of the 192 Digital I/O
by extracting the 16 small Phillips-head screws
around the edges of the top cover, and lift it off.
Put the screws in a safe place.
4 Remove the five screws on the front plate of
the card to be removed.
Pulling the card out
7 Place the card immediately in an anti-static
bag and send it to Digidesign according to instructions from the Customer Support dept.
When you pull a card out, pay particular attention to keeping components on the surfaces of the card from bumping into any of
the internal components or the back panel
faceplate on the 192 Digital I/O.
Appendix A: Card Removal and Replacement
19
Hardware Setup Changes
6 Look into the empty bay to locate the guide
rails for the card to slide in on.
.
Removing a Card
In this case, the Hardware Setup dialog will reflect the change by setting the removed inputs
and outputs to None. The remaining inputs and
outputs will function normally.
For example, if you remove one of the Digital
I/O cards, the second Digital tab will disappear
from the Hardware Setup dialog.
You will also lose the configuration of any pairs
of inputs or outputs that were assigned to the
card being removed.
Example of an empty bay. Note guide rails along the
inside edge
Replacing an I/O Card
To replace a card:
1 Power off and disconnect the 192 Digital I/O
from your HD system.
2 Make sure that the 192 Digital I/O is plugged
in so that it is grounded.
3 Remove the top cover of the 192 Digital I/O
by extracting all of the 16 small phillips-head
screws around the edges of the top cover, and
lifting it off.
4 If the card you are replacing is still connected
to the 192 Digital I/O, see “Removing an
I/O Card” on page 19.
5 To discharge any static electricity, touch the
power supply casing. It is a good idea to do this
often, throughout the process.
20
192 Digital I/O Guide
Placing the edge of the card into the guide rails
7 Slide the edges of the card into the guide rails
on each side of the bay. Push the card all the way
in until the card’s faceplate is nearly flush with
the rear panel of the 96 I/O.
8 Screw the card’s faceplate onto the rear panel
surface of the 192 Digital I/O with the same
screws you removed from the empty bay cover.
9 Locate the raised ridge in the middle of the 50pin cable which connects to the 192 Digital I/O
chassis. This ridge is only on one side of the connector, and there is a matching groove on only
one side of the 50-pin connector on the card.
14 When you power on the unit, the power LED
should turn orange.
15 Start up the computer.
16 When you boot up the computer, the power
ring should turn from orange to green.
– or –
If it doesn’t, see “Troubleshooting” on page 21.
17 If the ring turns green, and the computer
boots properly, launch Pro Tools.
18 If the new card does not appear in the Hardware Setup dialog, power down, check the seating of the card, and recheck the cables inside the
192 Digital I/O.
Locating the ridge on the 50-pin cable and the matching
groove on the 50-pin connectors on the card
10 Gently push the cable connector into the
card’s connector. The ridge on the cable connector must be line directly into the groove on the
card connector. Be very careful not to bend any
of the pins.
Troubleshooting
If the power ring does not turn from orange to
green when you boot the computer, make sure
you reconnected the DigiLink cable to the Primary port on the rear of the unit. If the DigiLink
cable is securely fastened and the other end is
plugged into an HD Core or Process card in a
computer that is booted, you may have inadvertently disconnected another 50-pin cable
when installing the card.
Hardware Setup Changes
Whenever a card is removed or replaced, the
Hardware Setup I/O routing reverts to original
defaults.
Pressing the 50-pin cable connector into the card
11 Place the top cover onto the 192 Digital I/O
and replace the screws that you removed with it.
12 Connect the 192 Digital I/O to your HD sys-
tem.
13 Press the Power switch.
Appendix A: Card Removal and Replacement
21
22
192 Digital I/O Guide
appendix b
Pinout Diagrams for the DB-25 Connectors
AES/EBU DB-25
1-2
RCV
3-4
RCV
5-6
RCV
7-8
RCV
1-2
XMT
3-4
XMT
5-6
XMT
7-8
XMT
CH12_RCV_HOT
CH12_RCV_COLD
CH12_RCV_GND
CH34_RCV_HOT
CH34_RCV_COLD
CH34_RCV_GND
CH56_RCV_HOT
CH56_RCV_COLD
CH56_RCV_GND
CH78_RCV_HOT
CH78_RCV_COLD
CH78_RCV_GND
CH12_XMT_HOT
CH12_XMT_COLD
CH12_XMT_GND
CH34_XMT_HOT
CH34_XMT_COLD
CH34_XMT_GND
CH56_XMT_HOT
CH56_XMT_COLD
CH56_XMT_GND
CH78_XMT_HOT
CH78_XMT_COLD
CH78_XMT_GND
24
12
25
10
23
11
21
9
22
7
20
8
18
6
19
4
17
5
15
3
16
1
14
2
13
NC_1
MH1
MH2
26
27
Appendix B: Pinout Diagrams for the DB-25 Connectors
23
TDIF DB-25
CH12_RCV_DATA
GND1
3-4
CH34_RCV_DATA
GND2
5-6
CH56_RCV_DATA
GND3
7-8
CH78_RCV_DATA
GND4
1-2
CH12_XMT_DATA
GND5
3-4
CH34_XMT_DATA
GND6
5-6
CH56_XMT_DATA
GND7
7-8
CH78_XMT_DATA
GND8
RCV
CLK+CTRL
RCV_LRCK
RCV_EMPHASIS
RCV_FS1
RCV_FSO
XMT
CLK+CTRL
XMT_LRCK
XMT_EMPHASIS
XMT_FS1
XMT_FSO
XMT DATA
RCV DATA
1-2
GND9
MH1
MH2
13
25
12
24
11
23
10
22
1
14
2
15
3
16
4
17
9
21
8
20
5
18
19
6
7
26
27
NC=
NC=
NC=
DB25F_RA_TDIF
FB30
FB31
22PF
22PF
GND_C
GND_C
24
192 Digital I/O Guide
GND_A
GND_C GND_A
index
Numerics
192 I/O
Back Panel 5
Front Panel 3
Overview 3
Digital Input format 17
Digital mode 17
Digital tab 14
DigiTest 10
E
A
AC Power connector 7
Accessory Port 8
AES/EBU 5
B
BNC cable 10
C
Clock Source 7, 13, 16, 17, 18
and Loop Master 16
and Synchronization mode 16
pop-up menu 16
Connecting the 192 I/O to an Existing HD System
9
D
DB–25 connectors 5
DIG (Digital) mode 17
DigiLink
cable 9
connections 9
Length Specifications 8
DigiLink Connections 8
Guidelines for 9
DigiSetup file 11
Digital Format 13, 16
sample rate and 16
settings 14
AES/EBU 13
Enclosure
Optical (ADAT) 6, 17
Connectors 6
Optical port 17
Expansion
DigiLink 7
Peripheral Port Limitations 8
port 7
External Clock 7, 18
I/O ports 7
In 17, 18
Output 13
port 18
H
Hardware Setup 3, 7, 11, 12, 16
Analog In tab 12
Analog Out tab 12
configuring 12
Digital tab 12
Main tab 12
Set To Default button 13
I
I/O Setup 15
Internal clock mode 17
(INT) 17
Index
25
L
P
LED ring 3
legacy
I/O Setup 14
peripheral port limitations 8
port 8
Lightpipe
Optical port 6
Loop
LED 10, 18
Master 3, 4, 18
Master LED 18
mode 18
Slave mode 4
Loop Master 16
and Clock Source 16
Clock Source and 16
LED 3, 4, 16
mode 3
Loop Sync 10
chain 10
Connections 10
sample rates 7
Peripherals list 14
Pinout Diagrams 23
Playback Engine 3, 17
Power Switch
and LED ring 3
power up 11
Powering Up Your System 11
Primary
audio interface 9
DigiLink 7
M
Meters 4
MIX-series 8
multiple outputs 15
routing Pro Tools channels to 15
O
Optical
(ADAT) 13, 17
(ADAT) port 17
(S/PDIF) 13
I/O 6
S/PDIF 17
Optical (ADAT)
about Lightpipe-compatible devices 6
R
RF interference 7
S
S/PDIF 7
Sample Rate 3, 16
conversion 5
conversion, AES/EBU 14
conversion, Optical (ADAT) 14
conversion, TDIF and Optical (ADAT) 14
Digital Format and 16
Session 18
Slave Clock 13
Sync Mode 16
LEDs 4
Sync mode
LEDs 17
synchronization 7, 10, 16, 18
mode 16
Synchronization mode
and Clock Source 16
T
Tascam DA30 DAT recorders
S/PDIF compatibility with 13
TDIF 6
TDIF DB-25 Pinout Diagram 24
time slot count 15
TOS-Link 17
Troubleshooting 21
W
word clock 7, 10, 17, 18
references 16
26
192 Digital I/O Guide