MOTU UltraLite-mk4, Руководство пользователя

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H A R D W A R E I N S T A L L A T I O N
35
MIDI CONNECTIONS
The UltraLite-mk4 provides MIDI I/O to the
computer over USB. Connect your MIDI device’s
MIDI IN jack to the UltraLite-mk4’s MIDI OUT
jack (Connection A below). Conversely, connect
the MIDI device’s MIDI OUT jack to the
UltraLite-mk4’s MIDI IN jack (Connection B).
Figure 4-3: Connecting a MIDI device to the UltraLite-mk4.
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 4-3. 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-mk4 to the
MIDI IN on the additional device as shown below
in Figure 4-4. The two devices then share the
UltraLite-mk4’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.
Figure 4-4: Connecting additional devices with MIDI THRU ports.
MIDI Thru when operating stand-alone
The UltraLite-mk4 has a MIDI Thru feature for
stand-alone operation. This can be enabled from
the front panel LCD Settings menu.
SYNCING TO SMPTE TIME CODE (LTC)
The Clock Mode menu (item #13 on page 12)
provides the ability to resolve to SMPTE time code
(
Longitudinal Time Code , referred to as LTC ) from
any specified analog or digital input.
When you choose the LTC clock mode setting, the
audio phase lock engine in your MOTU interface
resolves to the incoming time code. (See below for
how to specify the time code input.) This ensures
that audio passing through the interface remains
resolved to time code and won’t drift over time, as
long as the audio is coming from other sources that
are also resolved to the same time code. This also
ensures that audio recorded by DAW host software
on a connected computer, or audio playing back
from the DAW, will remain resolved to time code
and won’t drift over time, even when restarting or
cueing the source time code.
UltraLite-mk4
rear panel
MIDI Device
MIDI
cables
MIDI
IN
MIDI
OUT
MIDI
OUT
MIDI
IN
Connection A
Connection B
MIDI IN
MIDI
cable
MIDI Device
MIDI
IN
MIDI
THRU
MIDI
OUT
Additional device
UltraLite-mk4
rear panel