Euphonix MI715, MO705 User Manual

MI715/MO705 Guide
System 5
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.
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Product features, specifications, system requirements, and availability are subject to change without notice.
Guide Part Number 9329-65141-00 REV A 08/11
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Contents
Chapter 1. Introduction to the MI715/MO705 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Power On Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety and Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
System Requirements and Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
About This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
About www.avid.com . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter 2. MI715/MO705 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MI715/MO705 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MI715 Back Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MO705 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Appendix A. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Appendix B. Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Environmental Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
EMC (Electromagnetic Compliance). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Safety Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Contents iii
MI715/MO705 Guideiv
Chapter 1: Introduction to the MI715/MO705
The MI715 and MO705 converters provide MADI conversion to interface to/from analog and AES equipment such as con­soles, tape decks, microphone preamplifiers and other devices. Both converters are two rack spaces high and are housed in a stainless steel chassis with machined, heavy aluminum front panels.
The MI715 converts incoming analog signals to 24-bit MADI digital signals that capture the input’s complete dynamic range. Each main AES/EBU input is automatically evaluated for sample-rate conversion. The incoming sample rate is com­pared with the internal rate. If they are the same, no conver­sion occurs. If the rates differ, sample-rate conversion is acti­vated and persists until a new input is applied or the internal sample rate changes. The sample-rate conversion range is 32–56 kHz.In addition to the 8 XLR connectors for analog in­puts and 8 XLR connectors/2 D-Sub connectors for AES in­puts. The MO705 converts incoming MADI signals to 8 analog channels and 8 AES stereo pairs. The main 24 outputs can be bit-depth converted from 24 to 20 or 16 bits.
Power On Sequence
We recommend powering up the converters only after verify­ing the presence of a valid sync signal. After powering up the converters, the Sample Rate and Sample Rate Source LEDs blink as the converter senses the incoming Sample Rate source and Sample Rate. We recommend monitoring the power-up sequence to verify the converters have correctly auto-sensed the desired Sample Rate Source and Sample Rate.
Safety and Precautions
220, 230, 240 VAC Operation
Before connecting power to the converters, change the fuse and voltage selector to the appropriate 220/230/240 VAC settings.
The converters preserve their signal quality using linear power supplies that must be manually switched between 115 and 230 VAC. The units are shipped set for 115 VAC. Move the red, two-position switch near the power entry module of the con­verters to the 230 VAC position (down) for 220/230/240 VAC operation.
Each unit uses a 0.630 A fuse for 115 VAC operation. To oper­ate at 220, 230, or 240 VAC, install the spare 0.315 A fuse pro­vided in the power entry module fuse-holder.
To access both the active and the spare fuse:
1 Power off the unit.
2 Remove the IEC power cable from the power entry module.
3 Use a small screwdriver to open the fuse tray below the elec-
trical inlet.
The active fuse is to the rear of the tray. The spare fuse is in the tray slot closest to the front. Pull the fuses through the plastic constriction point that holds them from falling out.
Never disconnect the safety ground to the converters.
Power Cord Requirements
The converters are supplied with North American IEC power cords. If this cord is changed to allow a different plug config­uration, it is the responsibility of the user to select an ap­proved power cord with proper construction material, current capacity, flexibility, and strength characteristics.
Cooling
We strongly recommend providing adequate ventilation to the converters, particularly when installed in a rack. The MI715 and MO705 converters in particular should have space left above and below every two units so heat can properly dissipate.
Chapter 1: Introduction to the MI715/MO705 1
System Requirements and Compatibility
Avid can only assure compatibility and provide support for hardware and software it has tested and approved.
For complete system requirements and a list of qualified computers, operating systems, hard drives, and third-party devices, visit www.avid.com/compatibility.
About This Guide
This guide provides a basic overview of MI715 and MO705 features and functionality.
For complete instructions on connecting and configuring your system, see the System 5 Installation Guide.
Conventions Used in This Guide
All of our guides use the following conventions to indicate menu choices and key commands:
:
Convention Action
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 system. The following are just a few of the services and features available.
Product Registration Register your purchase online.
Support and Downloads Contact Avid Customer Success (tech-
nical support); download software updates and the latest on­line manuals; browse the Compatibility documents for system requirements; search the online Knowledge Base or join the worldwide Avid user community on the User Conference.
Training and Education Study on your own using courses avail­able online or find out how you can learn in a classroom set­ting at a certified Avid training center.
Products and Developers Learn about Avid products; down­load demo software or learn about our Development Partners and their plug-ins, applications, and hardware.
News and Events Get the latest news from Avid or sign up for a demo.
File > Save Choose Save from the File menu
Control+N Hold down the Control key and press
the N key
Control-click Hold down the Control key and click the
Right-click Click with the right mouse button
The names of Commands, Options, and Settings that appear on-screen are in a different font.
The following symbols are used to highlight important information:
mouse button
User Tips are helpful hints for getting the most from your system.
Important Notices include information that could affect your data or the performance of your system.
Shortcuts show you useful keyboard or mouse shortcuts.
Cross References point to related sections in this guide and other Avid guides.
MI715/MO705 Guide2
Chapter 2: MI715/MO705 Features
Professional grade audio conversion is accomplished utilizing 128 times over-sampled noise-shaped delta-sigma techniques. The analog to digital conversion employs a multi-bit modular architecture while the digital to analog conversion employs a single-bit modulator architecture. Low-jitter reference clocks are provided utilizing digital PLL techniques with VCXO and VCO oscillators.
The analog inputs and outputs can be calibrated from the front panel of each unit.
AES/EBU and Word Clock external sync inputs on both units provide synchronization to digital systems. Sample Rate Source and Sample Rate are automatically sensed by both units. Supported sample rates include 44.1, 48, 88.2, and 96 kHz. In addition, pull-up and pull-down rates for the standard sample rates, as well as custom sample rates are available.
Applications
In addition to their standard use in a digital system, the MI715 and MO705 can be used as stand-alone converters. When used with th e SH61 2 Studio Hub, this is a powerfu l conversion and MADI routing system that can be used to interface between an analog console and an otherwise all-digital facility (such as a TV broadcast facility).
MADI cables can be extended to 50 m (164 ft), allowing remote location of the converters.
MI715/MO705 Front Panel
This section discusses both front panels and notes their few differences.
Trim Pots Access One trim pot adjusts the maximum analog input/output level of channels 1–8 in 2 dB steps between +12 and +26 dBu.
SR Conv This indicates sample-rate conversion activity on the auxiliary digital inputs.
Sample Rate LEDs These LEDs indicate the sample rate to which the converter is currently locked. Sample rates are auto-sensed but can be manually selected on the AM713. Sup­ported sample rates are 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz, and Custom rates from external sources.
Sample Rate Source LEDs These LEDs indicate the format of the Sample Rate Source to which the converter is currently locked. Sample Rate Source can be auto-sensed or manually se­lected. If an external source is not detected, the MI715 reverts to Internal sync; the MO705 mutes its outputs. If a manually selected source is not present, the Sample Rate Source indica­tor blinks.
• AES: Sample Rate locked to AES Input.
• Word: Sample Rate locked to Word Clock Input.
• Internal (MI715 only): Sample Rate locked to its own in­ternal crystal.
• MADI (MO705 only): Sample Rate locked to MADI.
• Auto: Sample Rate Source has been auto-sensed.
These LEDs appear in the same order in which signals are tested for their presence. This detection procedure occurs when the converters are powered on. The Sample Rate (MI715 only) and Sample Rate Source can also be selected manu­ally.Manual Selection Buttons: The button below each Sample Rate LED row manually selects the sample rate. The MI715 also allows manual selection of the Sample Rate Source.
Power Switch On/Off switch.
There are no user-serviceable parts in the converters.
Chapter 2: MI715/MO705 Features 3
MI715 Back Panel
MI715 back panel
Input Voltage Selector This red switch allows the unit to oper­ate in either 110/115 VAC or 220/230/240 VAC environ­ments. A fuse must also be changed for 220/230/240 VAC op­eration. Units are shipped set and fused for 110/115 VAC.
Power Connector (IEC) and Fuse Tray The IEC power connec­tor accepts standard IEC power cords. The fuse tray contains both the active fuse and a spare fuse for 220/230/240 VAC op­eration. See “220, 230, 240 VAC Operation” on page 1 for in­formation on changing the fuse.
Analog Inputs (female XLR) 8 balanced, analog inputs on XLR connectors. Input sensitivity is set from the front panel.
AES/EBU Digital Input (female XLR) 8 Stereo AES/EBU digital input on XLR connectors
Parallel AES/EBU Digital Inputs (female DB25) Two 8-channel digital connectors function in parallel with XLR digital inputs, and should not be used simultaneously
AES Sync In (female XLR) Master clock input for the converter when using AES as Sample Rate Source.
AES Sync Thru (male XLR) Outputs the same signal connected to AES Sync In.
Word In (BNC) Master clock input for the converter when us­ing Word Clock as Sample Rate Source.
Word Out (BNC) Outputs a Word clock signal synchronized to the Sample Rate Source. In the presence of an external Word clock input, this connector provides a regenerated version of that input signal. Without an external sample rate source, this connector outputs the internally generated clock signal.
MADI Out (BNC) Outputs the digital audio signal.
• 1–8: Analog inputs
• 9–24: AES inputs
28 channels are always transmitted; dual channels are not used.
MI715/MO705 Guide4
MO705 Back Panel
MO705 back panel
Input Voltage Selector This red switch sets the unit to either 110/115 VAC or 220/230/240 VAC environments. A fuse must also be changed for 220/230/240 VAC operation. Units are shipped set and fused for 110/115 VAC.
Power Connector (IEC) and Fuse Tray The IEC power connec­tor accepts standard IEC power cords. The fuse tray contains both the active fuse and a spare fuse for 220/230/240 VAC op­eration. See “220, 230, 240 VAC Operation” on page 1 for in­formation on changing the fuse.
Analog Outputs (male XLR) 8 balanced analog outputs on XLR connectors. Output level is set from the front panel.
AES/EBU Digital Outputs (male XLR) 8 Stereo AES/EBU digital outputs on one XLR connector.
Parallel AES/EBU Digital Outputs (female DB25) Two 8-chan­nel digital connectors function in parallel with XLR digital outputs and the two outputs should not be used simultane­ously.
AES Sync In (female XLR) Master clock input for the converter when using AES as the Sample Rate Source.
Synchronization
MI715
The MI715 Sample Rate is set externally by one of two source signals or internally by crystals and associated circuitry. The Sample Rate Source is determined automatically by the pres­ence of signals when the MI715 is powered on. The order in which external signals are tested for presence is: AES, Word, Internal.
The detected signal immediately becomes the source for the MI715 Sample Rate clock. The auto-sensed Sample Rate Source can be overridden using the button on the front panel of the MI715, below the Sample Rate Source LEDs. If neither AES nor Word Clock signals are present, the MI715 uses its internal clock derived from on-board voltage-controlled crystal.
The default internal Sample Rate of the MI715 is 48 kHz. This default internal rate can be overridden with the Sample Rate button on the front panel of the MI715 (directly below the Sample Rate LEDs) to 44.1, 48 or 96 kHz.
AES Sync Thru (male XLR) Outputs the same signal connected to AES Sync In.
Word In (BNC) Master clock input for the converter when us­ing Word Clock as Sample Rate Source.
Word Out (BNC) Outputs a Word Clock signal synchronized to the Sample Rate Source. In the presence of an external Word clock input, this connector provides a regenerated version of the input signal. Without an external sample rate source, this connector outputs an internally generated clock signal.
MADI In (BNC) Digital audio signal input.
• 1–8: Analog outputs
• 9–24: AES outputs
MO705
The MO705 detects Sample Rate and Sample Rate Source like the MI715 with the following two differences:
• Since the MO705 is always a slave to an external Sample Rate Source, there is no internal Sample Rate setting.
• The MO705 can use MADI in addition to AES or Word Clock as a Sample Rate Source, and detects the presence of these signals in the following order: AES, Word, MADI.
When a signal is detected, it immediately becomes the sample rate clock of the MO705. The auto-sensed Sample Rate Source can be overridden with the Sample Rate Source button on the front panel of the MO705, below the Sample Rate Source LEDs.
Chapter 2: MI715/MO705 Features 5
MI715/MO705 Guide6
Appendix A: Specifications
MI715 Performance Specifications
Sync Sources Sync Outputs Sync Detection Internal Sample Rate Lock range
fine mode 300 ppm
custom mode
Audio Inputs Analog Inputs (1–8)
Level for 0 dBFS Adjustable between +12 and +26 dBu in 2 dB steps
Signal-to-Noise Ratio 105 dB (unweighted)
Frequency Response
(1 kHz @ +4 dBu)
AES, word clock, internal AES thru and word clock out Auto or switched
44.1, 48, 88.2, 96 kHz ±50 ppm
12% varispeed of 44.1 and 48 kHz Above 50 kHz, varispeed can adjust the nominal sample rate by -12 to +5%
8 analog, 16 AES Electronically balanced XLR; 20 k input impedance
THD 0.0005%
0.25 dB 20 Hz – 20 kHz @ 48 kHz
-2.5 dB 20 Hz – 40 kHz @ 96 kHz
CMRR >50 dB 20 Hz – 20 kHz
Group Delay
AES Inputs (9-24)
MADI Output
Crosstalk
-110 dB @ 1 kHz -100dB 20 Hz – 20 kHz
(869 s @ 48 kHz)
41.7/F
s
XLR, transformer isolated, 110 , 24-bit Group delay varies with sync frequency and inputs
BNC 75 24 channels at all sample rates Inputs mapped to channels 1–24, 24-bit signal path
Appendix A: Specifications 7
MO705 Performance Specifications
Sync Sources Sync Outputs Sync Detection Internal Sample Rate Lock range
custom mode
MADI Input
Audio Outputs Analog Outputs (1–8)
Level for 0 dBFS Adjustable between +12 and +26 dBu in 2 dB steps
Signal-to-Noise Ratio 101 dB (unweighted)
AES, word clock, MADI AES thru and word clock out Auto or switched
44.1, 48, 88.2, 96 kHz ±50 ppm
fine mode 300 ppm
12% varispeed of 44.1 and 48 kHz Above 50 kHz, varispeed can adjust the nominal sample rate by -12 to +5%
BNC 75
44.1/48 kHz: 56 channels
88.2/96 kHz: 28 channels. Outputs mapped to channels 1–24, 24-bit signal path
8 analog,16 AES Electronically balanced XLR; 200 output impedance
THD 0.0003%
Frequency Response
(1 kHz @ +4 dBu)
Group Delay
AES Outputs (9–24)
Truncation Type
Digital Format Pro or Consumer, internally switched
Group Delay
Digital Format professional or consumer (internally switched)
0.25 dB 20 Hz – 20 kHz @ 48 kHz
-2.5 dB 20 Hz – 40 kHz @ 96 kHz
CMRR >50 dB 20 Hz – 20 kHz
Crosstalk
Dither Type TPDF (active only for 16- or 20-bit word length)
-110 dB @ 1 kHz -100 dB 20 Hz – 20 kHz
(588 s @ 48 kHz)
28.2/F
s
AES on XLR, transformer isolated, 110 , 24 bit User can truncate to 16- or 20-bit per stereo pair
Dithered or 1
3/F
(63 μs @ 48 kHz)
s
AES (XLR), transformer isolated, 110 S/PDIF (RCA), 75
st
order noise-shaped, internally switched
MI715/MO705 Guide8
MI715/MO705 Technical Specifications
Power Requirements 110/115 VAC or 220/230/240 VAC; 50 or 60 Hz Power Consumption 50 W Temperature of Operation
Dimensions Height: 3.5 in; Width: 19 in; Depth: 18.25 in; Weight: 17 lb
5–35C
Appendix A: Specifications 9
MI715/MO705 Guide10
Appendix B: Compliance Information
Environmental Compliance
Disposal of Waste Equipment by Users in the European Union
This symbol on the product or its packaging indicates that this product must not be disposed of with other waste. Instead, it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal will help conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city recycling office or the dealer from whom you purchased the product.
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. The State of California requires the following disclosure statement: “Perchlorate Material – special handling may apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate.”
Recycling Notice
Appendix B: Compliance Information 11
EMC (Electromagnetic Compliance)
N1709
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. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Any modifications to the unit, unless expressly approved by Avid, could void the user's authority to operate the equipment.
Australian Compliance
Canadian Compliance
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le material brouilleur du Canada.
CE Compliance
(EMC and Safety)
Avid is authorized to apply the CE (Conformité Europénne) mark on this compliant equipment thereby declaring conformity to EMC Directive 2004/108/EC and Low Voltage Directive 2006/95/EC.
MI715/MO705 Guide12
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: UL 60950-1:2007, 2nd Ed and CAN/CSA-22.2 No. 60950-1-07, 2nd Ed. Avid Inc., has been authorized to apply the appropriate NRTL mark on its compliant equipment.
War n ing
Important Safety Instructions
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this equipment near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other equipment (including amplifiers) that produce heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10) Protect power cords from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the equipment.
11) Only use attachments/accessories specified by the manufacturer.
12) For products that are not rack-mountable: Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the equipment. When a cart is used, use caution when moving the cart/equipment combination to avoid injury from tip-over.
13) Unplug this equipment during lightning storms or when unused for long periods of time.
14) Refer all servicing to qualified service personnel. Servicing is required when the equipment has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the equipment, the equipment has been exposed to rain or moisture, does not operate normally, or has been dropped.
15) For products that are a Mains powered device: The equipment shall not be exposed to dripping or splashing and no objects filled with liquids (such as vases) shall be placed on the equipment.
Warning! To reduce the risk of fire or electric shock, do not expose this equipment to rain or moisture.
16) For products containing a lithium battery: CAUTION! Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
17) For products with a power switch: It should remain accessible after installation.
18) The equipment shall be used at a maximum ambient temperature of 40° C.
19) This unit is provided with a power supply cord set suitable for 120V AC input only (for U.S.A.and Canada). For other than U.S.A. and Canada, a qualified person must provide for use with this unit, an appropriate, approved power supply cord set which is in compliance with the end use country requirements and has a minimum cross-sectional area of 1.0mm2.
20) For units with more than one power cord:
CAUTION: This unit has more than one power supply cord. Disconnect two power supply cords before servicing to avoid electrical shock.
ATTENTION: Cet appareil comporte plus d’un cordon d’alimentation. Afin de prévenir les chocs électriques, débrancher les deux cordons d’alimentation avant de faire le dépannage.
21) For products with an operator-accessible fuse:
CAUTION: For continued protection against risk of fire, replace only with same type and rating of fuse.
ATTENTION: Pour ne pas compromettre la protection contre les risques d’incendie, remplacer par un fusible de même type et de même caractéristiques nominales.
Appendix B: Compliance Information 13
MI715/MO705 Guide14
Avid
2001 Junipero Serra Boulevard Daly City, CA 94014-3886 USA
Technical Support (USA)
Visit the Online Support Center at www.avid.com/support
Product Information
For company and product information, visit us on the web at www.avid.com
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