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DigiDesign 192 I User Manual

DigiDesign 192 I
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192 I/O
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DigiDesign 192 I Specifications

General IconGeneral
Sample Rates44.1, 48, 88.2, 96, 176.4, 192 kHz
ConnectivityDigiLink
Word ClockYes
Form FactorRackmount
TypeAudio Interface
Channels8
Bit Depth24-bit
CompatibilityPro Tools HD
Clock I/OWord Clock In/Out
Power SupplyInternal
Converter TypeA/D and D/A
Analog Inputs8
Analog Outputs8
Digital InputsAES/EBU, S/PDIF
Digital OutputsAES/EBU, S/PDIF
ConnectorsXLR

Summary

Legal Notices

Warning

Important Safety Instructions

Disposal of Waste Equipment by Users in the European Union

Chapter 1: Introduction to the 192 I/O

192 I/O Features

Details the 16-channel digital audio interface's capabilities and connectivity options.

What's Included

Lists the items provided with the 192 I/O unit, including cables and documentation.

System Requirements

Outlines the necessary Digidesign-qualified Pro Tools|HD system for the 192 I/O to function.

About This Guide

Explains the purpose of the guide, which is to provide a hardware overview of the 192 I/O.

Conventions Used in This Guide

Describes the symbols and conventions used throughout the document for clarity and ease of understanding.

About www.digidesign.com

Highlights the resources and services available on the Digidesign website for product information and support.

Chapter 2: 192 I/O Overview

192 I/O Front Panel

Details the physical layout and controls on the front of the 192 I/O unit.

Power Switch and LED Ring

Explains the function of the power button and the meaning of the LED ring indicator.

Sample Rate

Describes how the sample rate LEDs indicate the internal crystal oscillator's current setting.

Loop Master LED

Explains the function of the Loop Master LED, indicating the master peripheral in a Pro Tools HD system.

Sync Mode LEDs

Details the Sync Mode LEDs and their indications for different clock sources (Internal, Digital, Loop, External).

Meters

Explains the four-segment LEDs that indicate signal levels for input and output channels.

192 I/O Back Panel

Provides an overview of the back panel connectors and bays for I/O cards.

Input and Output Cards

Describes the four bays for I/O cards, including factory-installed and expansion bays.

Analog Input

Details the analog audio input connectors, including +4 dBu and -10 dB(V) balanced options.

Input Trims

Explains the dedicated input trims for calibrating analog input channels and flexibility in headroom settings.

Analog Output

Describes the single DB-25 connector and output trims for eight channels of analog audio output.

Output Trims

Details the output trims used to individually calibrate each channel's output level, with two sets available.

Digital I/O

Covers connectors for AES/EBU, TDIF, and Optical (ADAT) I/O, and digital format compatibility.

Enclosure Connectors

Describes the non-removable connectors on the enclosure, including AES/EBU, Optical, and S/PDIF.

AES/EBU [Encl]

Details the enclosure's balanced XLR AES/EBU connectors and their sample rate support.

S/PDIF Stereo I/O

Describes the RCA jacks for S/PDIF input and output, and their audio data stream support.

Optical (ADAT) [Encl]

Explains the enclosure's optical ports for ADAT and S/PDIF, and their sample rate capabilities.

About Lightpipe-Compatible Devices

Provides background on Lightpipe technology and its role in digital audio connections.

LOOP SYNC In and Out

Details the Loop Sync ports for synchronizing multiple Pro Tools HD peripherals using a word clock signal.

EXT. CLOCK In and Out

Explains the use of BNC connectors for synchronizing the 192 I/O with external word clock signals.

AC Power

Describes the AC power connector and the unit's auto power-selecting capability.

Primary DigiLink

Explains the function of the Primary DigiLink port for connecting Pro Tools HD cards.

DigiLink Length Specifications

Lists the available lengths of DigiLink cables and their supported session sample rates.

Expansion DigiLink

Details how the Expansion port connects additional Pro Tools HD audio interfaces.

Legacy Port

Describes the port for connecting older MIX-series Digidesign audio interfaces.

Legacy and Expansion Peripheral Port Limitations

Outlines the restrictions on using Legacy and Expansion ports simultaneously and for higher sample rates.

Accessory Port

States that the accessory port is not supported by the 192 I/O.

Using Input and Output Trims

Provides instructions on how to use the input and output trims for calibration and setting headroom.

Input Trims

Explains the adjustable input trims for precise calibration and switching between headroom settings.

About Input Operating Levels

Discusses how to determine and set appropriate input operating levels based on connected equipment.

Selecting Analog Input Operating Levels

Guides users on how to switch between +4 dBu and -10 dB(V) input levels in the Hardware Setup dialog.

Soft Clip Limiting

Explains the optional soft limiter for inputs to protect against clipping and distortion.

Output Trims

Details the two sets of output trims (A and B) for different headroom calibrations.

Digital Format Settings and Sample Rate Conversion

Covers how to configure digital formats and enable real-time sample rate conversion within Pro Tools.

Appendix A: Adding or Removing I/O Cards

Installing an I/O Card

Provides step-by-step instructions for installing an optional card into the expansion bay of the 192 I/O.

Hardware Setup Changes After Adding a Card

Explains how the Hardware Setup dialog reflects newly added or removed I/O cards.

Troubleshooting

Provides solutions for common issues, such as the power ring not turning green.

Removing an I/O Card

Guides users on how to safely remove an I/O card from the 192 I/O for servicing or replacement.

Hardware Setup Changes After Removing a Card

Describes how the Hardware Setup dialog is updated after removing an I/O card.

Appendix B: Pinout Diagrams for the DB-25 Connectors

Analog Output DB-25

Provides a detailed pinout diagram for the 8-channel analog output DB-25 connector.

Analog Input (+4 dBu) DB-25

Offers a pinout diagram for the 8-channel +4 dBu analog input DB-25 connector.

Analog Input (-10dB(V)) DB-25

Presents the pinout diagram for the 8-channel -10 dB(V) analog input DB-25 connector.

AES/EBU DB-25

Shows the pinout diagram for the 8-channel AES/EBU digital input/output DB-25 connector.

TDIF DB-25

Displays the pinout diagram for the 8-channel TDIF digital input/output DB-25 connector.

Appendix C: 192 I/O Calibration Mode Instructions

About Calibration

Explains the concept of calibration for digital recording devices and its difference from analog calibration.

Headroom

Discusses the concept of headroom for analog and digital devices and its implications for audio signals.

The Calibration Process

Outlines the general procedure for calibrating analog devices to a mixing console's output level.

Digital

Explains how to achieve headroom on digital devices by aligning console signals to levels below full scale.

Calibrating the 192 I/O

Details the process of calibrating the 192 I/O using Pro Tools' Calibration mode and Signal Generator plugin.

To calibrate the 192 I/O inputs:

Provides instructions for calibrating the input level trim pots of the 192 I/O using Pro Tools.

Calibrating a System with Both 192 I/O and 96 I/O Audio Interfaces

Discusses calibrating systems with mixed Digidesign interfaces for consistent headroom levels.

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