Midi Connections - MOTU UltraLite AVB User Manual

TOSLink (optical S/PDIF)
Alternately, the optical ports can be configured for
stereo TOSLink (optical S/PDIF) in the web app
(item #21 on page 13). The optical IN and OUT
banks can be configured independently.
Choosing a clock source for optical connections
When connecting an optical device, make sure that
its digital audio clock is phase-locked (in sync
with) the UltraLite AVB. There are two ways to do
this:
A. Resolve the optical device to the UltraLite AVB
B. Resolve the UltraLite AVB to the optical device
For A, choose Internal (or anything other than
Optical) as the clock source in the Device tab (item
#13 on page 12). Then configure the other device
to resolve to its optical input.
For B, choose Optical as the clock source (item #13
on page 12), and configure the other device to
resolve to its own internal clock.

MIDI CONNECTIONS

The UltraLite AVB provides MIDI I/O to the
computer over USB. Connect your MIDI device's
MIDI IN jack to the UltraLite AVB's MIDI OUT
jack (Connection A below). Conversely, connect
the MIDI device's MIDI OUT jack to the UltraLite
AVB's MIDI IN jack (Connection B).
MIDI
OUT
Connection A
MIDI Device
Figure 4-7: Connecting a MIDI device to the UltraLite AVB.
40
UltraLite AVB
rear panel
MIDI
IN
MIDI
cables
MIDI MIDI
Connection B
IN OUT
One-way MIDI connections
MIDI devices that do not receive MIDI data, such
as a dedicated keyboard controller, guitar
controller, or drum pad, only need Connection B
shown in Figure 4-7. Similarly, devices that never
send data, such as a sound module, only need
Connection A. Make both connections for any
device that needs to both send and receive MIDI
data.
Connecting additional gear with MIDI THRUs
If you need to connect several pieces of MIDI gear,
run a MIDI cable from the MIDI THRU of a device
already connected to the UltraLite AVB to the
MIDI IN on the additional device as shown below
in Figure 4-8. The two devices then share the
UltraLite AVB's MIDI OUT port. This means that
they share the same set of 16 MIDI channels, too,
so try to do this with devices that receive on only
one MIDI channel (such as effects modules), which
makes it easier to avoid MIDI channel conflicts.
MIDI
OUT
MIDI Device
Figure 4-8: Connecting additional devices with MIDI THRU ports.
MIDI Thru when operating stand-alone
The UltraLite AVB has a MIDI Thru feature for
stand-alone operation. This can be enabled from
the front panel LCD Settings menu.
H A R D W A R E I N S T A L L A T I O N
UltraLite AVB
rear panel
MIDI
IN
MIDI
MIDI
THRU
cable
MIDI IN
Additional device