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
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NETWORKING
76
■ AVB is already shipping on current Macs —
Apple has already implemented initial support for
AVB on all current shipping Macs. MOTU is
working closely with Apple to realize the full
potential of AVB Ethernet class-compliant
connectivity and scalable networking for all
current-generation Macs.
MOTU’S AVB IMPLEMENTATION
MOTU engineering has faithfully implemented the
IEEE 802.1 AVB standard for the MOTU AVB
products. This means that MOTU devices are fully
interoperable with any 3rd party AVB-compatible
device. In addition, MOTU has fine-tuned AVB
operation among MOTU AVB devices for
optimum performance, within the AVB specifi-
cation. Here is a brief summary of advantages you
will enjoy when using MOTU AVB devices
together in a network:
■ 256 channels of host I/O — Over Thunderbolt,
each MOTU AVB interface support 256
simultaneous channels of audio I/O (128 in, 128
out) to and from the entire network.
■ Support for multiple computer hosts — All
computers and all network devices run in sync
with each other, resolved to the network’s master
clock.
■ Gigabit Ethernet — MOTU interfaces and the
MOTU AVB Switch deliver 1 Gbit Ethernet
performance, which provides substantially higher
bandwidth and lower latency than 10/100 Mbit
Ethernet.
■ Over 500 channels of network audio — MOTU’s
AVB network can stream over 500 channels of
audio throughout the network. Each MOTU AVB
device can broadcast sixteen 8-channel network
streams and simultaneously listen to sixteen
8-channel network streams.
■ Exceptionally low network latency — Standard
AVB network latency is 2 ms. MOTU AVB network
latency is an astonishing 0.6 ms, even over seven
“hops” (switches) and hundreds of meters of cable.
By comparison, other commercially available,
proprietary audio network protocols have variable
(unpredictable) network latency in the range of
2-5 ms.
■ Star configuration — MOTU AVB supports a
star network configuration, which is much more
flexible than daisy-chain scenarios, which depends
on all devices in the chain.
■ Web interface — MOTU AVB devices can be
controlled from the MOTU AVB Control Web App,
which runs within any web browser on any
networked laptop, tablet, or smart phone.
Although the web app shares the network with
AVB, AVB audio streams are never compromised
because AVB streams over the network traffic.
■ Bridging to standard Ethernet — the MOTU
AVB Switch provides an extra standard Ethernet
port for bridging to your local Ethernet network,
Wi-Fi, etc. for command and control, internet
access, and other standard network traffic. All
ports allow connection to standard (non-AVB)
network devices, however, the “Ethernet” port is
suggested because it does not support AVB.
NETWORKING EXAMPLES
Networking comes into play as soon as you hook
up a second MOTU interface to your first one, as
explained in “Setup for two interfaces” on page 36,
to add more I/O to your studio. Here are just a few
examples of what is possible.
Personal studio expansion
Let’s say you have a 1248 mounted in a rack next to
your computer. You could add an 8M interface and
position it across the room, near your drum kit, for
placing up to 8 mics on the drums. All the mic
cabling is kept near the drums, and you have one
simple, clean network cable running back to your