Setting Up A Motu Avb Interface For Networking; Mapping Audio To Network Streams; Mapping Computer Channels To Network Streams - MOTU 1248 User Manual

To add computers to the network, connect them
■
to any interface using Thunderbolt (which offers
the highest possible channel counts). If
Thunderbolt is not available, use USB.
A computer can be connected to the network
■
through its Ethernet port, but only for the purposes
of running the web app on the computer for
command and control over the network. (In this
scenario, you won't be able to stream audio to/from
the network from the computer.)
All computers and interfaces on the network
■
have full access to each other.
MOTU employs a 1 Gbit AVB implementation in
■
the MOTU AVB Switch. The switch allows routing
of many audio channels on the network.
SETTING UP A MOTU AVB INTERFACE FOR
NETWORKING
Depending on the model, MOTU AVB interfaces
have the ability to broadcast up to sixteen
8-channel streams to the rest of the network.
Conversely, it can "listen" to as many as sixteen
8-channel streams from anywhere else in the
network. The specific number of streams
supported depends on the model.
For each device on the network, set it up for
network operation as follows:
1 In the MOTU Pro Audio Control web app,
choose the device (item #1 on page 18).
2 Go to the Device tab (item #6 on page 18), go to
the AVB Stream Setup section (item #29 on
page 21), and type in the number of 8-channel
input and output streams you want for that device.
3 Go to the AVB Stream Connections section (item
#30 on page 21), and choose the network stream
you want the device to listen to for each bank.
N E T W O R K I N G
4 Use the Routing tab to map specific I/O
channels within each MOTU AVB interface to its
network input and output streams, as explained in
the next section.

MAPPING AUDIO TO NETWORK STREAMS

Once you've configured a device's AVB streams, as
explained above, use the Routing tab (page 20) to
map audio channels to network input and output
streams.
Input streams (coming from the rest of the
network) are listed across the top of the routing
grid. Expand the stream and click on the grid to
map incoming network channels to local
destinations, including physical outputs on the
device, computer channels (to a connected
computer), or mixer channels.
Output streams being broadcast to the rest of the
network are listed in rows along the left side of the
grid. Expand each stream bank and map
individual network output channels to local
sources, such as physical inputs on the interface,
channels coming from the computer, or channels
coming from the device's mixer.
MAPPING COMPUTER CHANNELS TO
NETWORK STREAMS
If a host computer is connected to an interface
(through Thunderbolt or USB), mapping network
input and output streams is accomplished as
described in the previous two sections. Simply
enable AVB streams as desired, and map them to
computer channels in the Routing grid.
If, while mapping, you run out of computer
channels, enable more in Routing setup (items #25
and 28 on page 21). If the computer is connected
with Thunderbolt or USB 3.0 (to a MOTU interface
that supports it), you can enable up to 128 channels
in and out. See "Maximum available computer
channels" on page 77.
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