User Manual
Table Of Contents
- Title Page
- Quick Start Guide
- 1248 Front Panel
- 1248 Rear Panel
- 8M Front Panel
- 8M Rear Panel
- 16A Rear Panel
- 16A Front Panel
- MOTU AVB Switch
- MOTU AVB Control Web App
- Overview
- It’s not on your hard drive
- Use your favorite web browser
- Control from multiple devices
- Run the installer, get the app
- Make hardware and network connections
- Launching the web app
- Device tab
- Device tab (continued)
- Routing tab
- Mixing tab
- Aux Mixing tab
- Mixer input channel strips
- Main Mix and Monitor channel strips
- Aux bus channel strips
- Group and Reverb channel strips
- 1 About Your MOTU AVB Audio Interface
- State-of-the-art A/D and D/A conversion
- Complementary I/O configurations
- 1248
- 8M
- 16A
- Network I/O
- Universal connectivity
- On-board DSP with mixing and effects
- 32-bit floating point processing
- Modeled vintage effects processing
- AVB system expansion and audio networking
- Matrix routing and multing
- 256 channels of network audio I/O for your host computer
- Web app control
- Stand-alone mixing with wireless control
- ADAT digital I/O
- S/PDIF digital I/O with SRC
- Word clock
- Comprehensive metering
- Headphone outputs
- Precision Digital Trim™
- Rack mount or desktop operation
- AudioDesk
- 2 Packing List and System Requirements
- 3 Software Installation
- 4 Hardware Installation
- Overview
- Rack installation and heat
- Thunderbolt audio interface setup
- USB audio interface setup
- Setup for two interfaces
- Setup for three to five interfaces
- Setup for a multi-switch network
- Setup for multiple Thunderbolt and USB interfaces
- Setup for web app control
- Audio connections
- A typical 1248 setup
- A typical 8M setup
- A typical 16A setup
- Synchronization
- Syncing S/PDIF devices
- Syncing word clock devices
- Syncing an AVB network
- 5 Presets
- 6 The Front Panel LCD
- 7 Working with Host Audio Software
- Overview
- Preparation
- Run the web app
- Sample rate
- Clock Mode
- Enabling and disabling input/output banks
- Specifying the number of computer channels
- Making inputs and outputs available to your host software
- Configuration presets
- Naming computer input and output channels
- Streaming computer audio to and from the onboard mixer
- Working with AVB network streams
- Mirroring computer channels to multiple outputs
- Combining multiple inputs to one output
- Routing grid tutorials
- Choosing the MOTU Audio driver
- Reducing monitoring latency
- Working with on-board mixing and effects
- Synchronization
- 8 Mixer Effects
- 9 Networking
- A Troubleshooting
- B Audio Specifications
- C Mixer Schematics
- D Updating Firmware
- E OSC Support
- Index
CHAPTER
75
9 Networking
OVERVIEW
The Audio Video Bridging (AVB) network port on
your MOTU interface opens up a world of
possibilities for creating expanded, customized
audio network systems.
About AVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
MOTU’s AVB implementation . . . . . . . . . . . . . . . . . . . . . . . . 76
Networking examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
A quick guide to networking . . . . . . . . . . . . . . . . . . . . . . . . 78
Setting up a MOTU AVB interface for networking. . . . 79
Mapping audio to network streams . . . . . . . . . . . . . . . . . 79
Mapping computer channels to network streams . . . 79
Bridging to Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
The MOTU AVB Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
ABOUT AVB
Audio Video Bridging (AVB) is an extension of the
Ethernet standard developed by the IEEE (802.1
standards committee) specifically to add high-
performance audio and video networking. AVB
brings together the worlds of networking
technology and high-end audio. Here is a brief
summary of some of the immediate benefits of
AVB for you, as a MOTU AVB interface user:
■ An open industry standard — AVB has been
developed by the IEEE as an international standard
specification. It is not proprietary or controlled by
one company.
■ High channel counts — AVB provides hundreds
of network channels.
■ Extremely low latency — AVB guarantees low-
latency, real-time performance.
■ Guaranteed Quality of Service (QoS) — AVB’s
Stream Reservation Protocol provides Guaranteed
Quality of Service for each and every audio stream.
If the network cannot continuously maintain every
bit of every sample in the audio stream, it will not
allow you to make the network connection in the
first place. AVB streams are prioritized over other
network traffic to ensure high performance.
■ Network-wide clocking and sync — AVB
devices all clock together over your network for
better-than-sample-accurate phase lock across all
connected devices. Timing accuracy is down to the
nanosecond.
■ True plug-and-play operation — AVB has been
designed from the ground up to provide automatic
device discovery, enumeration, and connection
management. Just plug your MOTU AVB interfaces
into a standard AVB switch and go. If you wish to
make stream connections and have the ability to
select media clock, you must use the Web app, or
some other AVB controller. You don’t need an IT
professional to configure the network. AVB is a
self-managing network protocol.
■ Bridging to standard Ethernet — AVB
cooperates with standard Ethernet networks, for
connecting traditional Ethernet devices like
wireless routers, switches, or any other non-AVB-
aware device.
■ Support for existing network infrastructure —
Replace your existing switches with standard AVB-
compatible switches, and your CAT-5e or CAT-6
wired infrastructure now supports AVB.
■ Long cable runs — a single AVB network
connection can run up to 100 meters with a
standard copper wire CAT-5e or CAT-6 cable.
Fiber-optic cable runs can be much longer. With
multiple switches, you can create a network that
covers very large distances, if necessary. You can
use up to seven “hops” (switch-to-switch
connections).