92 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.
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.
contents Chapter 1. Introduction to the 192 I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 What’s Included . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B. Pinout Diagrams for the DB-25 Connectors . . . . . . . . . . . . . . . . . . . . . . . 33 Analog Output DB-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Analog Input (+4 dBu) DB-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Analog Input (–10dBV) DB-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 AES/EBU DB-25 . . . . . . . . . . .
chapter 1 Introduction to the 192 I/O The Digidesign 192 I/O is a 16-channel digital audio interface for use in a Pro Tools|HD system. Featuring 24-bit analog-to-digital (A/D) and digital-to-analog (D/A) converters, the 192 I/O supports sampling rates of up to 192 kHz for superior dynamic range and low noise floor. 192 I/O Features • 16 discrete channels of input and output, with 4-segment LED Meters to monitor input and output on each channel.
About This Guide This guide provides a basic overview of the 192 I/O’s features and functionality. Complete instructions for connecting and configuring your Pro Tools|HD system are located in the Getting Started with HD Guide. For additional information about using Pro Tools software to route your interface inputs and outputs to Pro Tools inputs and outputs, see the Pro Tools Reference Guide.
chapter 2 192 I/O Overview 192 I/O Front Panel The 192 I/O has the following front panel features: 192 I/O Front Panel Power Switch and LED Ring Sample Rate This button turns the 192 I/O on and off. These LEDs display the current sample rate of the 192 I/O internal crystal oscillator, that can be 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, or 192 kHz. The sample rate can be set when you create a new session, or in the Hardware Setup or Playback Engine dialogs if no session is open.
Sync Mode LEDs The SYNC MODE LEDs indicate different clock source modes. Synchronization mode LEDs reflect the Clock Source choice in Pro Tools. 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.
192 I/O Back Panel Bay 1: Analog In Card Bay 3: Digital I/O Card Enclosure Empty Bay for Optional Card Bay 2: Analog Out Card 192 I/O Rear Panel Although the 192 I/O is a 16-channel interface, it has up to 50 inputs and outputs that can be assigned to Pro Tools channels. Installing an optional card provides even more I/O (depending on the card, you will get a total of 58, 66, or 74 inputs and outputs). See Appendix A, “Adding or Removing I/O Cards.
Input Trims Digital I/O Two dedicated Input Trims per analog input channel provide further calibration options and flexibility. Depending on how you utilize the two DB–25 input ports, you can use the A and B trim settings for numerous applications. See “Input Trims” on page 23. This section contains connectors for eight channels each of AES/EBU I/O, TDIF I/O, and Optical (ADAT) I/O. Only one digital format can be used at a time.
Enclosure Connectors Optical (ADAT) [Encl] The right half of the back panel of 192 I/O features a set of non-removable connectors that are mounted to the enclosure. These are Optical ports that accept up to eight channels of Optical (ADAT) input and output, or two channels (stereo) optical S/PDIF input and output. Optical (ADAT) mode supports sample rates up to 48 kHz. In TOS-Link mode, supports two-channel Optical input and output at sample rates up to 96 kHz.
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.
DigiLink Connections DigiLink cables make the vital connection between your HD Core or HD Process card and your HD I/Os. DigiLink cables are also used to interconnect multiple HD I/Os together to expand total system I/O. DigiLink Length Specifications There are five different lengths of DigiLink cables: • The 18’ (0.46m) cable is included with each HD I/O, designed for daisy-chaining multiple HD audio interfaces. • The 12’ (3.
10 192 I/O Guide
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 I/O to a new Pro Tools|HD system, refer to that guide now. If you are adding the 192 I/O to an existing Pro Tools|HD system, you can probably use just the instructions here in this chapter of your 192 I/O Guide.
If the existing system contains a single 192 I/O, you can connect your 192 I/O directly to the first HD Process card or through the Expansion port of your 192 I/O. Connect the DigiLink cable from the Primary port of the new 192 I/O to either the Expansion port on the existing 192 I/O or the DigiLink port on the HD Process card. ■ If you already have two 192 I/Os connected to your HD Core, connect the new 192 I/O directly to the first HD Process card.
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. 3 Turn on your 192 I/O and any other Pro Tools audio interfaces. On power up, the status LEDs will flash.
Example Studio Setup with a Mixing Console Optical in/out to ADAT Digital Inputs/Outputs To DAT Recorder DAT Recorder Analog Audio Inputs Analog Audio Outputs Digital Effects Device (set to external sync) Effects Devices Optional DigiSnakes (DB–25 to XLR or 1/4") Channel Outputs Tape Returns or Inputs Instruments Connected to Console Figure 1.
Example Studio Setup without a Mixing Console ADAT Mic, Preamp, Direct Box, Synth, etc. Optical in/out to ADAT Analog Audio Inputs Digital Inputs/Outputs To DAT Recorder DAT Recorder Analog Audio Outputs Analog Audio ins/outs Optional DigiSnakes (DB–25 to XLR or 1/4") Digital Effects Device (set to external sync) Other Effects Devices Power Amp and Speakers Figure 2.
Hardware Setup The Hardware Setup dialog shows you a list of 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 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).
To configure audio interfaces: 1 In Pro Tools, choose Setups > Hardware. 2 From the Peripherals list, select your 192 I/O or any audio interface you would like to adjust. If you only have a single 192 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.
Analog Input Settings Analog Output Settings To configure analog input options: To configure analog output options: ■ Click on the Analog In tab and select the Reference Input Level (+4 dBu or –10 dBV, which also determines which port is used on the rear of the 192 I/O), Input Trim settings (A or B), and Soft Clip limiter function, respectively, on each channel. See “Setting Operating Levels” on page 21 and “Soft Clip Limiting” on page 23.
Digital Format Settings and Sample Rate Conversion The following example shows how to configure an HD system with one 192 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 I/O (which should be your primary I/O). By default, the Main tab will be selected, and options and controls for the selected I/O will be available.
6 Turn on your Legacy I/O. Configuring I/O Setup 7 Wait for the Legacy I/O to initialize. While the I/O Setup provides tools to label and map Pro Tools input, output, insert, and bus signal paths. Legacy I/O is initializing, some of its LEDs will flash. To configure Legacy I/Os: 1 Power up the rest of your gear (see “Powering Up Your System” on page 13) and launch ProTools. 2 Choose Setup > Hardware Setup.
This allows you, for example, to quickly make a single output assignment in a Pro Tools session (A 1-2), which is then mirrored to the analog outputs for your monitor system, DAT Deck, and/or a S/PDIF device, with no extra load on your Pro Tools system. Setting Operating Levels There are specific windows within the Hardware Setup dialog in which to make I/O settings specific to your 192 I/O. These include setting input and output operating levels.
Check the owner’s manual for your mixer, power amplifier or effects processor to see if it can handle this load. If the other devices in your studio cannot handle this load, consider lowering the headroom value of Pro Tools. Most manuals contain device input specifications, including whether or not there are pads or attenuators. Consult the manufacturer’s documentation for your mixer or power amplifier for further information.
Input Trims The Input Trims below the two DB–25 connectors on the Analog In card are used to store two different calibration settings (A and B) for each channel. These two adjustable Input Trims are for precisely calibrating and switching between a choice of independently adjustable headroom settings for each channel. You can adjust each Input Trim by hand with a small screwdriver. Choose between your A and B Input Trim settings from within Pro Tools in the Hardware Setup dialog on the Analog In tab.
To choose a clock source: 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). Clock Source and Loop Master In the Hardware Setup dialog, you can set the clock source to be 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.
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 INT (Internal) This is the 192 I/O standard clock setting. In this mode, the 192 I/O sample clock is generated by its internal crystal oscillator, as determined by the session Sample Rate.
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 I/O is using the EXT CLOCK IN port for system synchronization. External Clock input and output do not have to be at the Word clock rate. EXT CLOCK IN synchronization will typically be 1x the current session sample rate.
appendix a Adding or Removing I/O Cards The 192 I/O comes with one available expansion bay on the rear of the unit. This bay lets you add another 192 AD Card, 192 DA Card, or 192 Digital Card (all sold separately) to increase the amount of available I/O on the unit. Installing an I/O Card Installing an optional card in the expansion bay To insert or replace a card: The expansion bay is the only bay that allows for another card.
4 Lift off the top of the 192 I/O and set it aside. 5 Remove the five screws on the cover over the empty bay. Do not misplace these screws; note that they are a different size and shape from the top cover screws. guide rails 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. 8 Gently push the card back into the bay, lifting slightly to keep components underneath the card from touching the rear panel.
10 Locate the raised ridge in the middle of the 50-pin cable which connects to the 192 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. 15 Power on your 192 I/O. 16 When you power on the unit, the power LED should turn orange. 17 Start up the computer. 18 When you boot up the computer, the power ring should turn from orange to green. – or – If it doesn’t, see “Troubleshooting” on page 30.
Hardware Setup Changes After Adding a Card The additional inputs and/or outputs provided by the new card will appear in the Hardware Setup dialog, with the same controls and parameters as for the original card of the same type. For example, if you add an Analog Input card to the original three cards, a second Analog Input tab will appear in the Hardware Setup dialog.
6 Pull the card out by gripping the edges between your thumb and forefinger. Pull straight back, lifting very slightly to avoid contact between components on the underside of the card and the 192 I/O back panel faceplate. 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 I/O.
32 192 I/O Guide
appendix b Pinout Diagrams for the DB-25 Connectors Analog Output DB-25 Analog Input (+4 dBu) DB-25 +4" Analog Outputs 1 2 3 4 5 6 7 8 CH1_HOT CH1_COLD CH1_GND CH2_HOT CH2_COLD CH2_GND CH3_HOT CH3_COLD CH3_GND CH4_HOT CH4_COLD CH4_GND CH5_HOT CH5_COLD CH5_GND CH6_HOT CH6_COLD CH6_GND CH7_HOT CH7_COLD CH7_GND CH8_HOT CH8_COLD CH8_GND NC_1 MH1 MH2 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 26 27 1 2 3 4 5 6 7 8 CH1_HOT CH1_COLD CH1_GND CH2_HOT CH2_COLD CH2_GND CH3_HOT CH3_COLD C
Analog Input (–10dBV) DB-25 1 2 3 4 5 6 7 8 34 192 I/O Guide CH1_HOT CH1_COLD CH1_GND CH2_HOT CH2_COLD CH2_GND CH3_HOT CH3_COLD CH3_GND CH4_HOT CH4_COLD CH4_GND CH5_HOT CH5_COLD CH5_GND CH6_HOT CH6_COLD CH6_GND CH7_HOT CH7_COLD CH7_GND CH8_HOT CH8_COLD CH8_GND NC_1 MH1 MH2 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 26 27 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
RCV DATA TDIF DB-25 1-2 3-4 5-6 XMT DATA 7-8 1-2 3-4 5-6 7-8 RCV CLK+CTRL XMT CLK+CTRL CH12_RCV_DATA GND1 CH34_RCV_DATA GND2 CH56_RCV_DATA GND3 CH78_RCV_DATA GND4 CH12_XMT_DATA GND5 CH34_XMT_DATA GND6 CH56_XMT_DATA GND7 CH78_XMT_DATA GND8 RCV_LRCK RCV_EMPHASIS RCV_FS1 RCV_FS0 XMT_LRCK XMT_EMPHASIS XMT_FS1 XMT_FS0 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 GND_A GND_C GND_A Appendix B: Pinout Di
36 192 I/O Guide
index Symbols B + symbol 20 +4 dBu 5, 6, 18, 22 BNC cable 12 C Numerics –10 dBV 5, 6, 18, 21, 22 192 I/O Back Panel 5 Front Panel 3 Overview 3 A A/D converters 5 AC Power connector 8 Accessory Port 8 Adding I/O Cards 27 AES/EBU 6 In/Out 7 Analog In card 5 Analog In tab 18, 22 Analog Input 5 (+4 dBu) DB-25 33 (+4 dBu) DB-25 Pinout Diagram 33 (–10dBV) DB-25 34 (–10dBV) DB-25 Pinout Diagram 34 Options 5 Settings 18 analog monitoring 1 Analog Out card 5 Analog Out tab 18 Analog Output 6 DB-25 Pinout Diagr
Digital Input format 25 Digital mode 25 Digital tab 19 DigiTest 12 Dual-wire mode 6 E AES/EBU 17 AES/EBU 7 Enclosure Optical (ADAT) 7, 25 Connectors 7 Optical port 24 Example Studio Setups 14, 15 Expansion DigiLink 8 Peripheral Port Limitations 8 port 8 expansion bay 27 External Clock 7, 26 I/O ports 7 In 24, 26 Output 17, 19 port 26 H Hardware Setup 3, 5, 8, 12, 16, 20, 22, 23, 24 Analog In tab 16, 22 Analog Out tab 16 configuring 16 Digital tab 16 Main tab 16, 20 Set To Default button 17 headroom 18, 22
O Operating Levels Choosing +4 dBu or –10 dBV 21 Optical (ADAT) 17, 25 (ADAT) port 25 (S/PDIF) 17 I/O 7 S/PDIF 25 Optical (ADAT) about Lightpipe-compatible devices 7 Output Cards 5 Output Levels 21, 22 Output Trims 6, 22 P Peripherals list 12, 19 Pinout Diagrams 33 Playback Engine 3, 22, 24 Power Switch and LED ring 3 power up 13 Powering Up Your System 13 Primary audio interface 11 DigiLink 8 I/O 8 port 8 speakers 1 Sync Mode 24 LEDs 4 Sync mode LEDs 25 synchronization 7, 23, 26 mode 24 Synchronization m
