MOTU UltraLite User's Guide download pdf (Page 40)

HARDWARE INSTALLATION

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).

Figure 4-7: Connecting a MIDI device to the UltraLite AVB.

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.

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.

UltraLite AVB

rear panel

MIDI Device

MIDI

cables

MIDI

OUT

MIDI

OUT

MIDI

Connection A

Connection B

MIDI IN

MIDI

cable

MIDI Device

MIDI

THRU

MIDI

OUT

Additional device

UltraLite AVB

rear panel

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MOTU UltraLite User's Guide Page 40

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