Related Manuals for Telos Alliance Linear Acoustic ARC
Summary of Contents for Telos Alliance Linear Acoustic ARC
- Page 1 Linear Acoustic ® Automatic Realtime Control Installation & User’s Guide Version 0.0.64 with Addendum for V1.2 2001-00520-000 TelosAlliance.com...
- Page 2 User Warnings and Cautions The installation and service instructions in this manual are for use by qualified personnel only. To avoid electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all servicing to qualified personnel This instrument has an autoranging line voltage input.
- Page 3 The Telos Alliance which are mentioned in this manual or accompanying material are informational only. The Telos Alliance makes no endorsement of any particular product for any purpose, nor claims any responsibility for operation or accuracy. We reserve the right to make improvements or changes in the products described in this manual which may affect the product specifications, or to revise the manual without notice.
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Page 4: We Support You
The URL is https://www.telosalliance.com/Linear. SERVICE You must contact Telos Alliance before returning any equipment for factory service. We will need your unit’s serial number, located on the back of the unit. We will issue a return authorization number, which must be written on the exterior of your shipping container. -
Page 5: Table Of Contents
Table of Contents User Warnings and Cautions We support you… Warranty Introduction ARC: What It Is, and Why We Made It About This User Guide Front and Rear Panel Overview ARC Front Panel ARC Rear Panel I/O, Clocking and Reference SDI I/O AES-3 I/O AES67 I/O... - Page 6 Reference Clock System Menu Software Updates IP Menu Setting IP Addresses Detailed Setup and Configuration Name and Location I/O Setup Input Routing and Reference Output Routing GPI/O Delays, Latency and A/V Sync An Introduction to APTO™ But First, a Word on Television Loudness What Is APTO? 39/40 What Makes APTO Different?
- Page 7 Foreground Sounds Coefficient Null Area Coefficient Compliance Speed Average Maximum Gain Average Maximum Attenuation Compliance Window Average Input Level Specifications Processing AES-3 I/O SDI I/O AES67 I/O Latency (V0 0 64 Software) Clock Reference Sample Rate/Resolution/Frequency Response Ethernet Parallel GPI/O Control Port Front Panel Controls and Indicators Power Dimensions and Weight...
- Page 9 Linear Acoustic®, 25-Seven Systems®, and Minnetonka Audio®. We’re here to help you make your work truly shine. We hope that you enjoy your Telos Alliance product for many years to come and won’t hesitate to let us know if we can help in any way.
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Page 11: Introduction
ARC: What It Is, and Why We Made It Congratulations on your purchase of the Linear Acoustic ARC! The name “ARC” – which stands for “Automatic Realtime Control” – provides a good clue as to what it is: A realtime television loudness processor featuring APTO®, our latest loudness adaptation algorithm. -
Page 13: Front And Rear Panel Overview
Front and Rear Panel Overview Chapter 2 | Front and Rear Panel Overview ARC Front Panel Figure 2-1 – ARC front panel ARC’s front panel features include: Four status LEDs indicating the status of each power supply (A, B), the overall status of the unit (C), and sync for the ♦... -
Page 14: Arc Rear Panel
Front and Rear Panel Overview Chapter 2 | ARC Rear Panel Figure 2-2 – ARC rear panel The rear panel of ARC contains the following connections: One parallel GPI/O control port (female DB-15) for five inputs and five outputs (A) ♦... -
Page 15: I/O, Clocking And Reference
I/O, Clocking and Reference Chapter 3 | I/O, Clocking and Reference SDI I/O ARC can access any of the eight audio pairs carried on an incoming HD- or SD-SDI stream and provide de-embedding and pair shuffling at its input. Note: ARC will not generate SDI video signals, so in order for the unit to output an SDI signal, it must receive one. -
Page 16: Reference Clocking And Sample Rate Converters
I/O, Clocking and Reference Chapter 3 | Reference Clocking and Sample Rate Converters Because ARC’s signal routing is so flexible and it supports multiple input and output formats, having a firm grasp of the clock sync (reference) requirements is critical. Some basics to remember: Sample Rate Converters (SRCs) are provided on the SDI input, SDI output, and AES-3 input;... -
Page 17: Installation And Initial Setup Using The Front Panel Interface
Installation and Initial Setup Chapter 4 | Installation and Initial Setup Using the Front Panel Interface Physical Installation ARC is a 1RU product intended to be permanently installed in a standard 19 ½” equipment rack and secured with four standard rack screws. -
Page 18: The Information Screen
Installation and Initial Setup Chapter 4 | The Home Screen When ARC first boots up, it displays the Home Screen which includes the Linear Acoustic and ARC logos. Figure 4-1 – Front panel Home screen The IP address of the network Control port (used to connect to the remote user interface) is shown in the lower left corner. If a network connection is detected, the IP address will be yellow. -
Page 19: Loudness Display Screen
Installation and Initial Setup Chapter 4 | Loudness Display Screen Pressing the Right button once more brings you to the Loudness Display screen which shows a numeric medium-term loudness value of each processed path, Program 1 and Program 2. Figure 4-3 – Front panel Loudness screen Each program can be given a “friendly”... -
Page 20: Ip Configuration Screen
Installation and Initial Setup Chapter 4 | IP Configuration Screen Another press of the Right button brings you to the IP Configuration screen for the Control port. Figure 4-5 – Front panel IP configuration screen Important! Both the Control and AES67 connections must be connected to 1000BASE-T (Gigabit) switch ports. If a port will not be used, it should not be connected to a switch but does require a specific configuration described below. -
Page 21: Locate Mode
Installation and Initial Setup Chapter 4 | Press OK to save the new IP information ♦ Remove power from the ARC for at least 10 seconds, and then re-apply power. ♦ If you suddenly notice you’ve entered some incorrect information and need to start over, use the Right/Left buttons to ♦... -
Page 23: Remote User Interface
Remote User Interface Chapter 5 | Remote User Interface Connecting to ARC As outlined in Chapter 4, certain settings and configurations can be accessed and performed using the front panel buttons and screen, but ARC is designed to be connected to a network and operated through its HTML-5 web-based interface. Important: Please refer to Chapter 4 or see the System Menu >... -
Page 24: User Accounts And Logging In
Remote User Interface Chapter 5 | Multiple users can connect to the same ARC hardware simultaneously. Anyone connected to the unit will be able to see the information on this screen including the unit’s name (B) and physical location (C). 1. -
Page 25: Program 1 And Program 2 Menus
Remote User Interface Chapter 5 | Program 1 and Program 2 Menus Each processing path – Program 1 and Program 2 – has its own page with controls for the APTO loudness processing as well as detailed loudness metering. For illustration purposes, we’ll use Program 1 here. The Program screen is divided into four basic sections: Input meters (A), Output meters (B), Routing status (D), and APTO loudness processing (C). -
Page 26: Input Meters
Remote User Interface Chapter 5 | Input Meters The Input Meters are based on the ITU-R BS1770-4 and EBU-Tech3341 standards. While visually rather simple and easy to read at a glance, the input meter section contains a wealth of level and loudness information. Figure 5-4 –... - Page 27 Remote User Interface Chapter 5 | In the center of the Input Meter section, you’ll find the following numeric readouts: At the top, the Average Integrated Loudness display (D) shows the average loudness measurement since the last input ♦ meter reset Either LUFS or LKFS will be indicated depending upon the current profile ¸...
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Page 28: Output Meters
Remote User Interface Chapter 5 | Output Meters Like the Input Meter, the Output Meter is based on the ITU-R BS1770-4 and EBU-Tech3341 standards and is designed to be easy to read at a glance while providing a host of detailed information about the output audio. Figure 5-5 –... - Page 29 Remote User Interface Chapter 5 | The center of the Output Meter section contains the following numeric readouts: At the top, the Average Integrated Loudness display (D) shows the average loudness measurement since the last input ♦ meter reset Either LUFS or LKFS will be indicated depending upon the current profile ♦...
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Page 30: Routing Status
Remote User Interface Chapter 5 | Routing Status The Input field (A) shows the source of the audio being routed to the Program 1 or Program 2 APTO processing engine. The Output field (B) indicates the output path(s) to which the processed audio is being routed. Actual Input and Output routing is configured in the I/O menu. -
Page 31: I/O Menu
Remote User Interface Chapter 5 | I/O Menu The process for setting up input and output configuration is covered in detail in Chapter 6 (“Detailed Setup and Configuration”) and will not be duplicated here, however, an explanation of the information found on the main I/O page is provided below. -
Page 32: Processor Inputs And Outputs
Remote User Interface Chapter 5 | Processor Inputs and Outputs The middle section of the I/O screen is devoted the Processor Inputs and Outputs. Which input audio program - selected from among all available SDI, AES-3, and AES67 sources in the dropdown menus – is routed to the Program 1 and Program 2 APTO processing engines is selected in the Processor Inputs menu (A). -
Page 33: Reference Clock
Remote User Interface Chapter 5 | Reference Clock The Primary and Secondary Reference Clock sources are set in the Reference Clock menu (A). The elapsed time since the last reference change is indicated here as well. Important: At the risk of stating the obvious, proper reference is critical for trouble-free operation. This is true for ARC and every other digital audio device in your plant. -
Page 34: System Menu
Remote User Interface Chapter 5 | System Menu The System Menu is home to the System status screen. It also contains the menus and controls for configuring the Control and AES67 Ethernet ports. The main system screen contains a wealth of technical status information about the device hardware and software (A). Some of it relates to the overall health of the unit (such as Power Supply status, unit uptime) but most will only be required during the course of troubleshooting an issue with our support team or performing software updates. -
Page 35: Ip Menu
Remote User Interface Chapter 5 | Figure 5-10 – System overview IP Menu The IP menu provides control over DHCP, shows network activity, and includes fields for entering static IP addresses, subnets, and gateways for both the Control and AES67 Ethernet ports. Setting IP Addresses By default, ARC is set up with DHCP enabled and will automatically receive an IP address when its Control Ethernet port is connected to a network with a DHCP server. - Page 36 Remote User Interface Chapter 5 | To use a fixed IP address, first click the Edit button (A) to unlock the settings for each Ethernet port. Click on the Use DHCP button (B) to disable DHCP. The text of the NET Address, Net Mask, and Gateway fields (D), which is grayed out when DHCP is enabled, will turn white and become editable.
- Page 37 Remote User Interface Chapter 5 | Figure 5-12 – PTP menu...
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Page 39: Detailed Setup And Configuration
Detailed Setup and Configuration Chapter 6 | Detailed Setup and Configuration Name and Location Once logged into ARC, click on the System menu (A). Click in the Unit Name field (B) and type in a “friendly” name for this particular unit. You may also enter the physical location of the unit in the “Location” field (C). Figure 6-1 –... -
Page 40: I/O Setup
Detailed Setup and Configuration Chapter 6 | I/O Setup Connect your SDI, AES-3, and/or AES67 sources to the rear panel of the ARC. Input Routing and Reference Click on the I/O menu (A), then choose the audio sources you wish to process (Program 1 and Program 2) from the list of available options via the dropdown menus in the Processor Inputs section (B). -
Page 41: Output Routing
Detailed Setup and Configuration Chapter 6 | Output Routing Each output type - SDI, AES67, and AES-3 – has its own sub-menus. SDI Outputs Figure 6-3 – SDI I/O menu To configure the SDI outputs, click on the SDI sub-menu in the “I/O” menu (A). In the “SDI Out”... - Page 42 Detailed Setup and Configuration Chapter 6 | Pair shuffling can be accomplished by selecting a different SDI input for any given SDI output ♦ To route processed (loudness-controlled) audio to an SDI output pair, choose “Program 1” or “Program 2” ♦...
- Page 43 Detailed Setup and Configuration Chapter 6 | AES67 outputs are configured in the AES67 sub-menu and in much the same was as SDI outputs. Click on the AES67 sub-menu (A) of the “I/O” menu. Use the AES67 dropdown menu (C) to select which audio gets routed to each SDI output pair.
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Page 44: Gpi/O
Detailed Setup and Configuration Chapter 6 | The AES-3 output is configured in the AES-3 sub-menu and in much the same way as SDI and AES67 outputs. Click on the AES-3 sub-menu of the “I/O” menu (A). Use the dropdown menu (C) of the “AES-3 Out” routing section to select which audio gets routed to the AES-3 output. - Page 45 Detailed Setup and Configuration Chapter 6 | Figure 6-6 – GPI/O menu The State Indicator (B) for each function will light for the duration of the closure on GPIs. For GPOs, it will light for the duration of an active event. Certain GPIs have selectable Parameters (C) associated with them.
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Page 46: Delays, Latency And A/V Sync
Detailed Setup and Configuration Chapter 6 | Delays, Latency and A/V Sync Latency through ARC varies depending on which inputs and outputs are used and whether or not SRCs are enabled. In any case, any latency will result in the processed audio trailing the video by that amount at the SDI output. Figure 6-7 –... - Page 47 SDI input to SDI output with SRCs disabled: 33.5ms ♦ SDI input to SDI output with SDI SRCs enabled: 36.5ms ♦ AES67 input to AES67 output: 107ms (measurement made using Telos Alliance SDI xNode which has a latency value of ♦ 80ms)
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Page 49: An Introduction To Apto
An Introduction to APTO™ Chapter 7 | An Introduction to APTO™ But First, a Word on Television Loudness The introduction of compliance regulations and an overall increased awareness of television loudness control have generally been successful in taming the wild loudness shifts that startled and annoyed viewers in the earlier days of digital television. Real-time processing is ubiquitous and effective, content creators now have a better understanding of how viewers watch (and listen to) their programs, and broadcasters have the necessary tools at their disposal to analyze and, if necessary, correct pre-recorded programs upon ingest in the file domain. -
Page 50: What Makes Apto Different
An Introduction to APTO™ Chapter 7 | What Makes APTO Different? Traditional real-time television processing normally employs a series of wideband and/or multiband compressors or AGCs that react to changing input levels by either increasing or decreasing gain in an effort to provide a more consistent output level. The various threshold, ratio, and attack and release rates can be adjusted to help determine the amount of dynamic range present at the output, or, put another way, how close to the desired output level the audio remains at any given time. -
Page 51: Basic Processing And Loudness Control
Basic Processing and Loudness Control Chapter 8 | Basic Processing and Loudness Control Choosing an APTO Profile In most cases, ARC is truly a “set and forget” processor and simply choosing a factory profile is all that is required. To select a profile, navigate to the Program 1 (or Program 2) menu (A), click the Load button in the APTO Loudness Control section (B), mouse over Factory Presets (C), then choose an appropriate profile from the Factory Preset List (D). -
Page 52: Basic Apto Controls
Basic Processing and Loudness Control Chapter 8 | Basic APTO Controls The individual controls within each APTO factory profile have been adjusted in such a way that they automatically deliver the required result associated with the profile name (such as “EBU R128 Adaptive”). However, there may be situations in which you want to adjust certain individual parameters to customize or fine tune the audio. -
Page 53: Load And Save
Basic Processing and Loudness Control Chapter 8 | Load and Save The Load button (B) is used to recall factory profiles, user profiles, or to import a profile previously saved to your computer. Any changes or modifications to the current profile can be saved by using the cryptically-named Save button (C). Bypass APTO can be bypassed so that the input audio is passed through to the output without being processed by clicking on the Bypass control (D). -
Page 54: Dialog Normalization
Basic Processing and Loudness Control Chapter 8 | Dialog Normalization The Dialog Normalization control (L) enables dialog detection and measurement. When enabled, APTO’s Compliance processing stage uses long-term speech-only measurements rather than the overall input program loudness to ensure the output target level is achieved. -
Page 55: Advanced Processing Controls
Advanced Processing Controls Chapter 9 | Advanced Processing Controls Advanced APTO Controls As we’ve mentioned before, most users and applications will be well served by simply selecting the appropriate factory profile according either to compliance regulations or the delivery platform. At most, some adjustments to the Basic controls may be necessary. -
Page 56: Audio High Pass Filter Cutoff Frequency
Advanced Processing Controls Chapter 9 | Audio High Pass Filter Cutoff Frequency The High Pass Filter control (A) sets the cutoff frequency for the high pass filter applied to the input signal. No audio below this frequency will make it through to the APTO processing engine. In most cases, this control should be set to “Off”, but in some instances, it may be beneficial to filter out any sub-audible frequencies (below 20Hz). -
Page 57: Foreground Sounds Coefficient
Advanced Processing Controls Chapter 9 | Foreground Sounds Coefficient All programming has what is sometimes referred to as an “anchor element,” that is, the audio content to which the viewer will pay the most attention. This is typically (though not always) dialog. This is also referred to as “foreground” audio to differentiate it from background audio, or in some cases, noise. -
Page 58: Average Maximum Attenuation
Advanced Processing Controls Chapter 9 | Another unwanted byproduct of setting this control too high - especially with profiles that use a lower Adaptation value – is that it can result in APTO taking too long to lower levels when loud content immediately follows soft content, such as when a loud commercial follows a quiet passage from a TV drama, as it will take longer to reduce a greater amount of gain. -
Page 59: Average Input Level
Advanced Processing Controls Chapter 9 | Average Input Level The value of the Average Input Level control (K) should be set to match the average level of the input audio as it serves as the mid-point value of the comfort zone defined by the Null Area Coefficient control. For content that has been previously analyzed and loudness corrected in the file domain, this value will be easy to determine. -
Page 61: Specifications
SDI input to SDI output with SRCs disabled: 33.5ms ♦ SDI input to SDI output with SRCs enabled: 36.5ms ♦ AES67 input to AES67 output: 107ms (measurement made using Telos Alliance SDI xNode which has a latency value of ♦ 80ms) -
Page 62: Clock Reference
Specifications Chapter 10 | Clock Reference 48kHz reference via SDI, AES-3, PTP v2, or internal clock ♦ Sample Rate/Resolution/Frequency Response 48kHz, 24-bit, 20Hz – 20kHz ♦ Ethernet Two Gigabit RJ-45 connections, one each for AES67 and Control ♦ Parallel GPI/O Control Port Future feature;... -
Page 63: Dimensions And Weight
Europe – Complies with European Union Directive 2002/95/EC on the restriction of use of certain hazardous substances ♦ in electrical and electronic equipment (RoHS), as amended by Commission Decisions 2005/618/EC, 2005/717/EC, 2005/747/EC (RoHS directive), and WEEE Warranty Standard Telos Alliance 2-year limited parts and labor ♦... -
Page 65: Addendum 1 - Arc V1.2 Software
V0.0.64 software can be field updated. The update and installation instructions can be downloaded www.telosalliance.com/linear/arc from the Telos Alliance website at New features included in V1.2 include support for SNMP V1.2 and logging for program loudness, loudness events, and system events. -
Page 66: Logging
Addendum 1 Chapter 11 | Logging ARC has three logs available for download when the Logging button (A) is enabled: A 6-hour rolling loudness log for each program path ♦ A loudness event log ♦ A system event log ♦ Logs will typically download to the “Downloads”... - Page 67 Addendum 1 Chapter 11 | Figure A1-2 – Logging menu...
- Page 69 Telos Alliance Warranty Telos Alliance Limited Warranty For the latest Telos Alliance warranty, visit: telosalliance.com/warranty.
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