HD I/O Guide
Legal Notices This guide is copyrighted ©2011 by Avid Technology, Inc., (hereafter “Avid”), with all rights reserved. Under copyright laws, this guide may not be duplicated in whole or in part without the written consent of Avid.
Contents Chapter 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 HD I/O Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 What’s Included . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 System Requirements and Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 7. HD I/O Calibration Mode Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 About Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Calibrating the HD I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Switching Jumpers on the Analog Output Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Appendix A.
Chapter 1: Introduction Avid ® HD I/O is a multi-channel digital audio interface designed for use with Avid HD Native and Pro Tools|HD hardware. HD I/O features 24-bit analog-to-digital (A/D) and digital-to-analog (D/A) converters, and supports sample rates of up to 192 kHz.
What’s Included • Avid HD I/O audio interface • AC power cable • DigiLink Mini cable (18 inches [0.46m]) • DigiLink Mini adapter • BNC cable (18 inches [0.46m]) • HD I/O Guide • Health and Safety Guide • Registration Information Card System Requirements and Compatibility Avid can only assure compatibility and provide support for hardware and software it has tested and approved.
About This Guide This guide provides a basic overview of the HD I/O 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.
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 Register your purchase on- line.
Chapter 2: HD I/O Overview This chapter describes the front and back panel features of the HD I/O. HD I/O Front Panel HD I/O Front Panel Power Switch and LED Ring Sample Rate This button turns HD I/O on and off. The LED ring around the power button will light green or orange to indicate the system status: These LEDs display the current sample rate of the HD I/O internal clock: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, or 192 kHz.
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.
HD I/O Back Panel Bay 3: Digital I/O card Bay 1: Analog In card Enclosure DIGITAL I/O ANALOG INPUT AES/EBU INPUT -10 dBV BALANCED +4 dBu BALANCED AES/EBU AES/EBU OUTPUT WORD CLOCK S/PDIF LOOP SYNC TDIF I/O ADAT IN ADAT OUT IN IN OPTICAL 1 2 3 5 4 6 7 IN 8 OUT OUT OUT ANALOG OUTPUT BALANCED 964530300294856 AC ~ 100-240V;50-60HZ; A ACCESSORY EXPANSION PORT 1 2 3 4 5 6 7 PRIMARY PORT 8 Bay 2: Analog Out card Bay 4: Empty for Optional card HD I/O Back Panel, 8 x 8 x 8 con
+4 dBu Balanced Provides eight balanced input channels at +4 dBu nominal operating levels. Analog Output –10 dBV Balanced Provides eight balanced input channels at –10 dBV nominal operating levels. Most consumer electronics operate at –10 dBV levels, and may not feature balanced inputs and outputs. You can connect –10 dBV signals to the –10 dBV inputs, but you will need to make sure that the negative terminals are not connected.
Digital I/O Optical (ADAT) Dedicated, eight-channel 24-bit capable Optical ports (up to 48 kHz), with realtime sample rate conversion on input (only). Note that Optical S/PDIF is not supported with the Digital I/O card and is supported with the enclosed Optical ports only (for more information, see “Optical (ADAT) [Encl]” on page 10). The Digital I/O card 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.
AES/EBU [Encl] S/PDIF Digital In and Out These are balanced, three-conductor XLR connectors that accept and output a stereo, 24-bit AES/EBU audio signal. These two ports support up to 192 kHz sample rates. These are unbalanced RCA jacks that receive and send two channels of S/PDIF audio. S/PDIF supports up to 24-bit audio, at sample rates up to 192 kHz.
DigiLink Mini Cables and Adapters Clock and Synchronization Ports 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 WD CLOCK IN and OUT Use DigiLink Mini cables to connect HD I/O to an HD Native card, as well as to other Avid HD audio interfaces (such as another HD I/O or HD OMNI).
The Loop Sync In and Out ports are standard BNC connectors that output a 1x Word clock signal. Loop Sync should only be used to chain multiple Pro Tools|HD peripherals together (such as Pro Tools|HD audio interfaces and SYNC HD). AC Power This connector accepts a standard AC power cable. HD I/O is auto power-selecting (100V to 240V) and will automatically work with a standard modular cable (IEC) to connect to AC power outlets in any country. Accessory Port This port currently has no functionality.
Chapter 3: Connecting HD I/O HD I/O provides up to sixteen channels of analog and digital I/O with HD I/O with Avid HD Native or Pro Tools|HD hardware. HD Native With HD Native hardware, HD I/O can be connected to the HD Native card using a DigiLink Mini cable. You can add additional HD audio interfaces to your system using the Expansion port on the back of HD I/O or the second DigiLink Mini Port on the HD Native card. See “Connecting HD I/O to HD Native Cards” on page 14.
Connecting HD I/O to HD Native Cards To connect HD I/O to an HD Native card: PORT 2 PORT 1 Connect HD I/O Primary Port to the DigiLink Mini Port 1 on the HD Native card using the included DigiLink Mini cable. Figure 1. HD I/O connected to the DigiLink Mini Port 1 on an HD Native card To connect two HD I/Os to an HD Native card: Connect the Primary Port to DigiLink Mini Port 1 on the HD Native card using the included DigiLink Mini cable.
Connecting Loop Sync If you are using two or more HD audio interfaces or a SYNC peripheral, Loop Sync must be connected to maintain proper clock synchronizations among the devices. For examples that include a SYNC peripheral, see the SYNC HD Guide. For an example of connecting multiple Avid HD 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 a BNC cable.
Connecting HD I/O to Pro Tools|HD Cards To connect HD I/O to a Pro Tools|HD card: Connect HD I/O Primary Port to the DigiLink Port on the first available Pro Tools|HD card with a DigiLink cable (included with your Pro Tools|HD hardware) and a DigiLink Mini adapter. 12-foot DigiLink cable with DigiLink Mini adapter Figure 3.
Connecting Loop Sync If you are using two (or more) Pro Tools audio interfaces or a SYNC peripheral, Loop Sync must be connected to maintain proper clock among the devices. For an example of connecting multiple Avid HD audio interfaces, see Figure 4 below. To make Loop Sync connections: Connect (daisy-chain) the Loop Sync Out of each interface to the Loop Sync In of the next interface with a BNC cable.
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Chapter 4: Configuring HD I/O in Pro Tools This chapter explains how to configure Pro Tools for use with HD I/O. For more information about configuring Pro Tools, see the Pro Tools Reference Guide . To change the default Sample Rate for new sessions: 1 2 Hardware Setup If a Pro Tools session is currently open, close it. Choose Setup > Hardware. From the Sample Rate pop-up menu, select the sample rate that you want.
High Sample Rates and Pro Tools|HD Expanded Systems • ADAT S/MUX 1–4 (at 88.2 and 96 kHz) 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 Pro Tools|HD cards and any attached peripherals will become active again when the sample rate is set to 96 kHz or lower (see the Pro Tools Expanded Systems Guide for more information). • TDIF 1–8 (at 44.
Identify 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. Configuring HD I/O To configure controls for HD I/O: 1 Choose Setup > Hardware. 2 From the Peripherals list, select the HD I/O audio interface. 3 Click the Main tab and configure the options.
5 If you have two HD I/O AD cards, click the An- alog In 9–16 tab and configure the options. HD I/O Hardware Setup Options HD I/O provides multiple pages of Hardware Setup options depending on the configuration. Main Page HD I/O supports up to sixteen channels of simultaneous input and output in multiple I/O formats (including analog, AES/EBU, ADAT Optical, S/MUX, S/PDIF, and TDIF).
Input Digital Format Select the corresponding physical input pairs from the Input pop-up menu for each stereo pair of Pro Tools Input channels (1–2, 3–4, ...15–16). Which physical inputs are available depends on the sample rate and on which HD I/O Expansion cards you have installed (for example, if no HD I/O AD card is installed, no analog inputs will be available).
Ext. Clock Output options by sample rate Available Ext. Clock Default Available Ext. Clock Option 88.2 kHz Word Clock (88.2 kHz) Word Clock (44.1 kHz) 96 kHz Word Clock (96 kHz) Word Clock (48 kHz) 176.4 kHz Word Clock (176.4 kHz) Word Clock (44.1 kHz) 192 kHz Word Clock (192 kHz) Word Clock (48 kHz) Sample Rate Reference Level Select the appropriate Reference Level for each of the available analog input channels.
Digital Page Digital Format The Digital page of the Hardware Setup dialog lets you set the Input Format and Sample Rate Conversion for any Digital I/O cards installed in HD I/O. Select from the following digital formats for the HD I/O Digital card. Depending on the sample rate, different Digital Format options are available. If you have only a single Digital I/O card installed, a single Digital tab is available.
AES/EBU You can select up to eight channels of AES/EBU input depending on the sample rate. At sample rates of 44.1 kHz to 96 kHz, the only option available is AES/EBU 1–8 (or AES/EBU 9–16 for the second card, if present). At sample rates of 176.4 kHz and 192 kHz, two AES/EBU options are available (Single Wire and Dual Wire modes). AES/EBU 1–8 Enable this option for eight channels of AES/EBU input. This is the only option available at sample rates of 44.1 kHz to 96 kHz.
Sample Rate Conversion ADAT Sample Rate Conversion (SRC) is independently available for AES/EBU stereo input pairs at all sample rates. When Digital Format is set to ADAT or TDIF, SRC can only be enabled or disabled for all channel inputs. Sample Rate Conversion on Input is only available for Digital I/O cards, it is not available for the enclosed digital ports. For sample rates of 44.1 kHz and 48 kHz, when Digital Format is set to ADAT, Sample Rate Conversion can be enabled or disabled for all inputs.
Using Input Trims Consider the following when connecting a mixer: Input Trims If your mixer cannot handle more than 1.5V (RMS) inputs at +4 dBu, then you should set the HD I/O to operate at –10 dBV line level. If your mixer can handle up to 15.5V (RMS) inputs, or has pads or attenuators on its inputs, then you can use the +4 dBu setting on the HD I/O. Input Trims The Input Trims below the two DB–25 connectors on the HD I/O AD Expansion card are used to store a calibration settings for each channel.
Chapter 5: Adding or Removing I/O Cards The HD I/O has four Expansion I/O bays on the back of the unit. Depending on which version of HD I/O you purchased, one, two, or none of these bays may be empty and available for additional I/O cards: • 8 x 8 x 8: three bays are used and the fourth bay is empty. • 16 x 16 Analog: all four bays are used. Removing an I/O Card To remove an Expansion I/O card: Power off and disconnect the HD I/O from your system. 1 Make sure that the equipment is properly grounded.
Remove the screws on the back panel for the I/O card you want to remove. 5 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 HD I/O. Place the card in a static-free bag and keep it in a safe place (if you are not sending it to Avid for service).
Installing an Expansion I/O Card To install an Expansion I/O card: Power off and disconnect the HD I/O from your Pro Tools|HD system. 1 Make sure that the equipment is properly grounded. 2 7 Remove the Expansion I/O card that you want to install from its static-free bag. Before handling any of the cards or internal components of HD I/O, discharge any static electricity by touching the outer casing of the power supply. 8 Slide the edges of the card into the guide rails on each side of the bay.
Secure the I/O card to the back panel of the HD I/O chassis with the same screws you removed from the either the empty bay cover or from the I/O card you previously removed. 10 Locate the raised ridge in the middle of the connector on the other end of the 50-pin cable that connects the I/O card to the HD 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.
Open the Hardware Setup dialog to confirm that the new card is recognized: 23 • If you installed a Digital Expansion card, you should see a new tab called “Digital 9–16.” • If you installed an AD Expansion card, you should see a new tab called “Analog In 9–16.” If the new card does not appear in the Hardware Setup dialog, power down, check the seating of the card, and recheck the cable connections inside the HD I/O.
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Chapter 6: 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 CH
Analog Input (–10dBV) DB-25 1 2 3 4 5 6 7 8 36 HD 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 C
XMT DATA RCV DATA TDIF DB-25 1-2 3-4 5-6 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 Chapter 6: Pinout Di
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Chapter 7: HD I/O Calibration Mode Instructions Before you use HD I/O, you may want to calibrate its input and output levels to the level of your mixing console. The HD I/O has +4 dBu and –10 dBV inputs, and +4 dBu outputs, each with its own trim pot for proper calibration. The HD I/O is factory-calibrated so that its +4 dBu input operating level is set for 18 dB headroom above +4 dBu (maximum input/output +22 dBu).
For example, to have 12 dB of headroom above 0 VU with the HD I/O, you must align the incoming 0 VU 1kHz tone to a level of –12 dBFS. For 18 dB of headroom, you would align it to –18 dBFS. (Since it is assumed that you are using the HD I/O with a +4 dBu device or console, a 0 VU signal level coming out of the device or console is actually equivalent to a nominal +4 dBu level signal.
Create an additional mono Auxiliary Input track for each input you want to calibrate. Set the input assignment for each of these Auxiliary Inputs to its respective I/O input. Then set the output of each of these Auxiliary Inputs to an unused bus pair (for example Bus 3–4). In the template session the bus names are Null and Out. This makes sure feedback doesn’t occur when monitoring main outputs 1–2. 13 Connect an external VU meter to each of the I/O outputs in turn. (One at a time as you calibrate.
Switching Jumpers on the Analog Output Card Each Analog Output card for HD I/O provides a jumper for each of the eight channels of output on the card to switch between a Hi and Lo output setting. The default setting for each jumper is Hi. This is what you want for working with professional gear that operates at +4 dBu levels. However, if you are working with –10 dBV gear, you can switch the jumper on Analog Output card (on a channel-by-channel basis) from the default Hi position to Lo for a –6 dB pad.
Appendix A: Compliance Information Environmental Compliance Disposal of Waste Equipment by Users in the European Union 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.
EMC (Electromagnetic 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.
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 10) Protect power cords from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the equipment.
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Avid Technical Support (USA) Product Information 2001 Junipero Serra Boulevard Daly City, CA 94014-3886 USA Visit the Online Support Center at www.avid.com/support For company and product information, visit us on the web at www.avid.
