Related Manuals for Linear Acoustic LA-5291
Summary of Contents for Linear Acoustic LA-5291
- Page 1 Linear Acoustic ® LA-5291 Professional Audio Encoder Installation & User’s Guide V1.0.25 June 2020 2001-00525-000 TelosAlliance.com...
- Page 2 User Warnings and Cautions The installation and service instructions in this manual are for use by qualified personnel only. This equipment is not suitable for use in locations where children are likely to be present. To avoid electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.
- Page 3 USA CLASS A COMPUTING DEVICE INFORMATION TO USER. WARNING: This equipment generates, uses, and can radiate radio-frequency energy. If it is not installed and used as directed by this manual, it may cause interference to radio communication. This equipment complies with the limits for a Class A computing device, as specified by FCC rules, part 15, subpart j, which are designed to provide reasonable protection against such interference when this type of equipment is operated in a commercial environment.
-
Page 4: We Support You
Updates LA-5291 features and operations are determined largely by software. The Telos Alliance strives to provide the most stable and feature-rich software available. We encourage you to check for software updates from time to time by visiting our website or by contacting us directly. -
Page 5: Warranty
Warranty For the latest Telos Alliance warranty, visit: telosalliance.com/warranty Register your product Register your product today to get the full benefits of our warranty, support, and product updates. telosalliance.com/product-registration/ The Telos Alliance 1241 Superior Ave. Cleveland, OH 44114 USA +1 (216) 241-7225 For Telos Support: +1 (216) 622-0247 24/7 telephone:... -
Page 6: Table Of Contents
LA-5291 Front Panel ......6 LA-5291 Rear Panel ......7... - Page 7 Latency and Delays ......23 Sample Rate Converters ......24 Clock Reference .
- Page 9 We’re grateful that you have chosen audio tools from Telos® Systems, Omnia® Audio, Axia® Audio, 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.
-
Page 10: Introduction
In the air chain, the LA-5291 can encode PCM coming through the plant to Dolby Digital Plus JOC or transcode an incoming ED2 stream directly to Dolby Digital Plus JOC. -
Page 11: Applications And Use Cases
The DP590 functions may be controlled via the mixing console using GPIO or Ember+, or directly via its web ♦ remote UI The DP590 outputs metadata via an IP connection ♦ The LA-5291 encodes the content into Dolby ED2 or Dolby Digital Plus JOC ♦ Figure 1-1 – Live Dolby Atmos creation... -
Page 12: Contribution Encoding
LA-5291 via an IP connection. The LA-5291 drives the output based on the Vref input ♦ The LA-5291 encodes PCM + PMD to Dolby ED2 or Dolby Digital Plus JOC and outputs it via SDI, 2x AES-3, ♦ or AES67 Figure 1-2 –... -
Page 13: Headend Contribution Decoding
The LA-5291 ingests a Dolby ED2 stream over Quad-Link 3G SDI, Audio/Video over IP, or AES67 ♦ The LA-5291 decodes the coded streams and outputs PCM to route through the facility and mix in with ♦ studio shows, advertisements and interstitials, etc. -
Page 15: Front And Rear Panel Overview
Basic configuration and status monitoring can be performed using the front panel controls as outlined in Chapter 3. Connecting to LA-5291 via the web-based user interface (more on that in Chapter 4) provides easier navigation and full control of the unit. -
Page 16: La-5291 Rear Panel
Front and Rear Panel Overview LA-5291 Rear Panel Figure 2-2 – LA-5291 rear panel The rear panel of the LA-5291 contains the following connections: Two RJ-45 Gigabit Ethernet connections, one for network remote control (2-2A) and one for AES67 I/O ♦... -
Page 17: Installation And Initial Setup Using The Front Panel Interface
LA-5291 is fan cooled with air intakes and exhausts located on the side of the unit just behind the front panel, but whenever possible it is recommended to leave 1RU of empty space above and below the unit. -
Page 18: The Home Screen
Pressing the Right button navigates to the Information screen. The name of this particular LA-5291 and its location are displayed at the top of the screen. These values can be customized using the remote interface as detailed in Chapter 6. -
Page 19: Ip Configuration Screen
0.0.0.1, and a Gateway of 0.0.0.0. By default, the LA-5291 will automatically obtain an IP address from a DHCP server which will suffice to provide initial remote access to the unit for configuration purposes. A fixed IP address will be preferred in most cases and can be set as follows: Press the OK button to highlight “Edit”... -
Page 20: Locate Mode
Locate Mode Our sincere hope is that you like your LA-5291 so much that you’ll eventually end up with dozens of them pop- ulating your racks, but since one LA-5291 looks pretty much like another, we’ve come up with a way to help you identify an individual unit. -
Page 21: Hardware Relay Bypass
Chapter 3 | Hardware Relay Bypass LA-5291 includes a hard relay bypass that removes all internal circuits and processes from the signal path and connects each SDI and AES-3 input directly to its corresponding output. To toggle the relay bypass on and off, simultaneously press and hold the Left, Down, and Right keys for three seconds until a red countdown timer appears in the bottom left corner of the display. -
Page 23: Remote User Interface
Connecting to LA-5291 As outlined in Chapter 3, certain settings and configurations can be accessed and performed using the front panel buttons and screen, but the LA-5291 is designed to be connected to a network and operated through its web-based interface. - Page 24 Remote User Interface Chapter 4 | 15 Multiple users can connect to the same LA-5291 hardware simultaneously. Anyone connected to the unit will be able to see the information on this screen including the unit’s name (4-1B) and physical location (4-1C).
-
Page 25: User Accounts And Logging In
This section is primarily an overview of the user interface to provide an explanation of the various menus and screens. It is not intended to provide step-by-step instructions for setting up or operating the LA-5291. Where applicable, references to specific chapters will be made where you can find more detailed instructions for specific controls. -
Page 27: I/O, Clocking, And Reference
Connect your SDI, AES-3, and/or AES67 sources to the rear panel of the LA-5291 as required for your installation. The LA-5291 can access any of the eight audio pairs carried on its incoming HD- or SD-SDI streams. Inputs and outputs for five stereo pairs via AES-3 are also provided. - Page 28 I/O, Clocking, and Reference Chapter 5 | 19 Routing a signal into the LA-5291 is a two-step process. The first step is creating an input group from the available physical hardware inputs (5-2A). The second step is routing the audio from these inputs into the transcoder input (5-2B).
-
Page 29: Creating An Input Group
I/O, Clocking, and Reference Chapter 5 | 20 Creating an Input Group Click on your first audio input source (5-3A) to highlight it, then right click and select “Create Input Group.” You may enter a custom name for this source in the Label field (5-3C) and customize the color (5-3B) of the graphical routing lines. -
Page 30: Routing A Signal To The Transcoder Input
After saving the input group, it is necessary to first set the priority of the input source by dragging the input audio lines (5-4A) and then clicking when the desired priority level is highlighted (5-4B). The LA-5291 will look for a signal first on the inputs connected to Priority 1. -
Page 31: Creating An Output Group
I/O, Clocking, and Reference Chapter 5 | 22 To edit or delete a group, highlight then right click on the colored Edit rectangle (5-6A). Figure 5-6: Editing or deleting input group. Creating an Output Group The steps for creating an output group are identical to creating an input group, but with the Outputs menu. Routing Transcoded Audio to the Physical Output Once the first output group has been created and saved, drag the output audio lines to connect the physical outputs to the output of the transcoder, then click to save. -
Page 32: Latency And Delays
Latency and Delays Latency through the LA-5291 varies depending on which inputs and outputs are used and whether or not SRCs are enabled. In any case, it will be necessary to compensate for any latency incurred by the transcoding process. Please see the Specifications section of this manual for latency measurements for the current software version. -
Page 33: Sample Rate Converters
I/O, Clocking, and Reference Chapter 5 | 24 Sample Rate Converters Sample rate converters (SRCs) are provided on each SDI input pair, each SDI output pair of the first SDI output, and each AES-3 input pair. The AES-3 output is always synced to the active reference clock. There are no SRCs in the AES67 path. -
Page 34: Clock Reference
SDI input must be used. When using AES-3 I/O, the LA-5291 can be referenced to either the AES-3 clock (using the SRCs in the SDI path) or to the SDI clock (using the SRCs in the AES-3 path. -
Page 35: Setting Clock Reference
I/O, Clocking, and Reference Chapter 5 | 26 Setting Clock Reference Click on the Clock menu (5-9A). Use the dropdown menus to choose a Primary Reference Clock and a Secondary Reference Clock (5-9C) and, if needed, a VRef clock source (5-9E). The status of the selected Primary and Secondary Reference Clocks is shown to the right of the dropdown menu (5-9D). -
Page 36: Gpi/O
I/O, Clocking, and Reference Chapter 5 | 27 GPI/O The LA-5291 offers five GPI and five GPO functions through its rear panel DB-15 connector, activated by a momentary contact closure. GPI/O Functions GPI functions (5-10A) include: None Hardware (Relay) Bypass ♦... - Page 37 I/O, Clocking, and Reference Chapter 5 | 28 The State Indicator (5-10B) for each function will light for the duration of the closure on GPIs. For GPOs, it will light for the duration of the active event. At this time, there are no user-defined Parameters (5-10C) associated with any GPI or GPO. Should functions with such parameters be included in future software releases, they will appear in a dropdown menu.
-
Page 39: System And Network Configuration
SDI and AES input directly to its corresponding output. This button will turn red when the LA-5291 is in bypass mode. Note that this same hard relay bypass automatical- ly engages when the unit is powered down. - Page 40 Chapter 6 | 31 System and Network Configuration Figure 6-1 – System screen Clicking on the Reboot Unit button (6-1E) – wait for it – reboots the LA-5291 and engages the hard relay bypass for the duration of the reboot process. Important! During the reboot process –...
-
Page 41: Ip Configuration
Clicking on the Reset Unit to Factory Defaults button (6-1G) resets all parameters to the factory default state with the exception of IP settings, which will be retained so that you can remotely connect to the LA-5291 even after performing a reset. - Page 42 Chapter 6 | 33 System and Network Configuration By default, LA-5291 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. To use a fixed IP address, first click the Edit button (6-2D) for the appropriate port which unlocks the settings.
-
Page 43: Using The Transcoder
Note that certain settings may be grayed out if they are not applicable to the selected workflow. Note It is assumed that the signal being fed into the LA-5291 is appropriate for the selected workflow. For example, if the “Dolby ED2 Decoding” workflow is selected, the unit expects to see a Dolby ED2 bitstream at... - Page 44 “External Metadata”, the metadata values as presented by a Dolby DP590 connected to the Control Ethernet port of the LA-5291 will be used. If no metadata is present, or if a different channel output format is required, the output can be encoded as 2.0, 5.1, 5.1.4, or 7.1.4.
-
Page 45: Advanced Transcoder Controls
Chapter 7 | 36 Using the Transcoder Advanced Transcoder Controls Clicking on the Advanced down arrow (7-2A) expands the Advanced menu for the transcoder. As in the basic transcoder menu, certain settings will be grayed out if they are not applicable to the currently selected workflow. -
Page 46: Decoder Metadata Screen
Chapter 7 | 37 Using the Transcoder Enabling Surround Phase Shift (7-2J) adds a 90-degree phase shift filter to one surround channel to de-correlate the surrounds and prevent channel buildup during the downmixing process. It is recommended this be set to the default value of “Enabled.”... -
Page 47: Specifications
Chapter 8 | 38 Specifications Specifications Coding Decoding Decodes Dolby ED2 to PCM ♦ Transcoding Transcodes Dolby ED2 to Dolby Digital Plus JOC and Dolby E to Dolby Digital Plus ♦ Encoding Encodes PCM to Dolby Digital Plus and Dolby Atmos (via Dolby Digital Plus JOC) ♦... -
Page 48: Madi I/O
Chapter 8 | 39 Specifications MADI I/O Optional MADI I/O supports up to 16 channels for processing (mutually exclusive with Quad-Link SDI ♦ option) Passthrough and shuffling for up to 64 channels ♦ I/O via coax or optical SFP socket (SFP sold separately) ♦... -
Page 49: Front Panel Controls And Indicators
Chapter 8 | 40 Specifications Front Panel Controls and Indicators 5-key navigation cluster; graphical color LCD display; LED status indicators for each power supply, status, ♦ and reference Power Dual internal redundant auto-ranging power supplies, each rated at 100-264VAC, 50/60Hz, 100 Watts ♦... -
Page 50: Licensing
Chapter 8 | 41 Specifications Licensing The Linear Acoustic LA-5291 is manufactured under license from Dolby Laboratories. Dolby, Dolby Audio, ♦ and the double-D symbol are trademarks of Dolby Laboratories. Warranty Standard Telos Alliance 2-year limited parts and labor ♦... - Page 53 Telos Alliance Warranty Telos Alliance Limited Warranty For the latest Telos Alliance warranty, visit: telosalliance.com/warranty.
- Page 56 1241 Superior Ave. • Cleveland, Ohio, 44114, USA • +1.216.241.7225 • TelosAlliance.com © 2020 TLS Corp., All Rights Reserved. L20/18192 • P/N: 1490-00228-001 • USER MANUAL: LA- 5291...
Need help?
Do you have a question about the LA-5291 and is the answer not in the manual?
Questions and answers