Midi Connections - MOTU 828 User Manual

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 828, as explained in "Synchronization"
on page 29 and "Syncing optical devices" on
page 30.
S/PDIF I/O
The 828 provides S/PDIF digital audio input and
output on the RCA jacks provided (item #4 on
page 12). Be sure to review the digital audio
clocking issues, as explained in "Syncing S/PDIF
devices" on page 30.
The S/PDIF ports are disabled when the
interface is operating at a 176.4 or 192 kHz.
Choosing a source for the S/PDIF output
By default, the audio signal from the S/PDIF
output comes from your host software (over USB)
from any tracks you've assigned to the output.
Alternately, you can choose one of the 828's mix
buses. For further information, see items #7 on
page 46.

MIDI CONNECTIONS

Connect your MIDI device's MIDI IN jack to the
828 MIDI OUT jack (Connection A below).
Conversely, connect the MIDI device's MIDI OUT
jack to the 828 MIDI IN jack (Connection B).
MIDI
OUT
Connection A
MIDI
IN
MIDI Device
Figure 4-5: Connecting a MIDI device to the 828.
28
828
rear panel
MIDI
IN
MIDI
cables
Connection B
MIDI
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 4-5. 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 828 to the MIDI
IN on the additional device as shown below in
Figure 4-6. The two devices then share the 828
MIDI OUT port. This means that they share the
same set of 16 MIDI channels, too, so try to do this
with devices that listen to only one MIDI channel
(such as effects modules), which makes it easier to
avoid MIDI channel conflicts.
828
rear panel
MIDI
OUT
MIDI Device
Figure 4-6: Connecting additional devices with MIDI THRU ports
MIDI Thru
The 828 MIDI OUT port can be configured as a
MIDI THRU port. To do so, use the MIDI Thru
setting in the CueMix 5 Device tab (item #7 on
page 43). This can also be enabled from the front
panel menu.
H A R D W A R E I N S T A L L A T I O N
MIDI
IN
MIDI
MIDI
THRU
cable
MIDI IN