User Manual

UltraLite AVB Rear Panel
1. The UltraLite AVB operates as a USB MIDI interface,
allowing MIDI software to communicate with
connected MIDI devices through the USB connec-
tion to the computer. Connect a MIDI device here
using standard MIDI cables. Connect the UltraLite
AVB’s MIDI OUT port to the MIDI IN port on the
other device. Conversely, connect the
UltraLite-AVB’s MIDI IN port to the MIDI OUT port
on the other device. For further details, see “MIDI
connections” on page 40.
2. This jack accepts any standard 12-18V DC power
supply (1.0A max) with either tip-positive or tip-
negative polarity.
3. The ANALOG OUTPUTS provide additional analog
output for secondary studio monitors, surround
monitoring, sub-mixes or any other desired desti-
nation. These connectors are balanced (tip/ring/
sleeve), but they also accept an unbalanced plug.
They are DC-coupled. Control volume from the
MOTU AVB Control web app or your host audio
software.
4. The MAIN OUT pair provides stereo analog output
for primary (powered) studio monitors or PA
speakers, or any other desired destination. Control
volume from the MOTU AVB Control web app or
from the front panel volume control.
To hear audio playback from your host audio
software on the MAIN OUT pair, use the Audio
Interface preset and then assign audio tracks (and
master fader) to these main outs. You can also use
the MOTU AVB Control web app to route live
UltraLite AVB inputs (and network inputs) here as
well.
5. Equipped with very high quality 24-bit 192 kHz
converters, these six analog inputs are balanced
TRS (tip/ring/sleeve) quarter-inch connectors that
can also accept an unbalanced plug (with the ring
disconnected). Use them for keyboards or other
line level analog sources. These inputs are
equipped with the UltraLite AVB’s Precision Digital
Trim™ feature: digitally controlled analog trims
that let you adjust input level in 1 dB increments
from the MOTU AVB Control web app.
6. This is MIC INPUT #2. Controls for preamp gain, 48V
phantom power and pad are on the front panel.
7. This AVB ethernet port provides industry standard
IEEE 802.1 network connectivity to other network
devices. Examples include:
■ Another UltraLite AVB or any other MOTU AVB-
equipped audio interface, such as the 1248, 8M,
16A, 24Ai, 24Ao, 112D, Monitor 8, etc.
■ A standard ethernet hub or Wi-Fi router (for
internet connection and communication with
the web app software).
■ A standard AVB Ethernet switch for high-speed,
low-latency, high-capacity audio connectivity to
an AVB audio network.
■ A recent-generation Mac (any Mac with a
Thunderbolt port) running OS X Yosemite (10.10)
or later. This allows you to operate the UltraLite
AVB as an audio interface over Ethernet.
8. Connect the UltraLite AVB to the computer here
using a standard USB cable.
9. These ADAT optical “lightpipe” jacks provide 8
channels of 24-bit ADAT optical digital I/O at 1x
sample rates (44.1 or 48 kHz) and 4 channels at 2x
sample rates (88.2 or 96 kHz). They are disabled at
higher sample rates. Alternately, they can operate
as stereo TOSLink (optical S/PDIF) connectors.
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