Digidesign
1622 I/O Audio Interface
Installation Guide
Digidesign Inc.
3401-A Hillview Avenue
Palo Alto, CA 94304 USA
tel: 650·842·7900
fax: 650·842·7999
Technical Support (USA)
650·842·6699
650·856·4275
Product Information
650·842·6602
800·333·2137
Fax on Demand
1-888-USE-DIGI (873-3444)
World Wide Web
www.digidesign.com
Digidesign FTP Site
ftp.digidesign.com
Copyright
This User’s Guide is copyrighted ©1999 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 932706988-00 REV A 9/99
Communications & Safety Regulation Information
Compliance Statement
The model 1622 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
• CISPR 22 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 product
not authorized by Digidesign, Inc., could void the Certification
and negate your authority to operate the product. This product
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; UL813 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.
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 product.
• 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.
• The product should be connected only to the correct power
supply as indicated on the product.
contents
Using the 1622 I/O
The 1622 I/O Interface
1622 I/O Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1622 I/O Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Making Signal Connections to the 1622 I/O Interface
Adjusting 1622 I/O Gain Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Setting Up Your Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Using the 1622 I/O Interface as Stand-Alone Audio Converter
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Technical Specifications
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
A/D Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
D/A Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Contents
iii
Using the 1622 I/O
The 1622 I/O™ is a 16-channel digital audio interface which features 20-bit analog-to-digital, and 24-bit digital-to-analog
converters for superior dynamic range, reduced noise floor, and the capability to
work with the full 24-bit mixing, editing,
processing, and mastering environment of
Pro Tools.
The 1622 I/O Interface
This section explains the connectors and
indicators on the front and back panels of
the 1622 I/O Interface, how they are used,
and offers suggestions for connecting the
1622 I/O to your studio.
The 1622 I/O can be used in two ways:
As a 20-bit Audio Interface for a compat-
■
ible Pro Tools system
As a stand-alone 20-bit audio converter
■
This Guide explains the indicators and
connectors on the 1622 I/O. It also explains how to use it with a Digidesign
Pro Tools
stand-alone 20-bit audio converter in your
studio.
If you are using the 1622 I/O with
Pro Tools, refer to the
ware Installation Guide
Pro Tools-specific aspects of the 1622 I/O.
▲
Pro Tools MIX and d24 cards. Do not connect
it to DSP Farm or Pro Tools III cards.
system, or as an independent,
Pro Tools TDM Hard-
, which covers many
The 1622 I/O is designed for use with
1622 I/O Front Panel
The 1622 I/O has the following front panel
indicators, moving from left to right:
Front panel of the Digidesign 1622 I/O
1. Power
This switch applies power to the 1622 I/O.
The “I” position is on. The “O” position is
off.
2. Sync Mode
The Sync Mode LEDs indicate which sample rate clock reference is currently used by
the analog-to-digital converters (ADCs)
and the digital-to-analog converters
(DACs).
Using the 1622 I/O
1