User Manual

WORKING WITH HOST AUDIO SOFTWARE
74
LTC-TO-MTC CONVERSION
When connected to a Mac, your MOTU interface
can convert SMPTE time code (LTC) to MIDI
Time Code (MTC), allowing any MTC-
compatible host audio software to resolve to MTC.
LTC-to-MTC conversion can be done even when
the Clock Mode setting for the MOTU interface is
set to Internal (or any other setting). Note that the
Clock Mode setting does NOT have to be set to
LTC. In other words, the interface can convert
LTC to MTC even when it is not resolving its
audio engine to the incoming time code. This
allows your DAW host software to resolve to time
code with fast lockup response.
To set up LTC-to-MTC conversion:
1 Set the interface Clock Mode to Internal (or any
other desired setting).
2 Set the other LTC settings as needed, as
discussed in “Syncing to SMPTE time code (LTC)”
on page 49, including the Computer Channel for
LTC-to-MTC Conversion setting.
3 If you would like MIDI Time Code to continue
to be generated, even after LTC stops being
received, check Enable Jam Sync (Figure 5-19 on
page 50). Otherwise, leave it unchecked.
4 Follow the directions for MTC (SMPTE) sync
in your DAW software.
Your MOTU interface driver automatically
communicates with macOS, creating a device in
the computer’s Audio MIDI Setup configuration
that reports its time code port to any MTC-
compatible host software. If your host software
requires that you specify the port, you should see
your MOTU interface SMPTE Sync port as an
available option in the list. In Digital Performer,
this is the Sync to port menu in the Receive Sync
settings (Setup menu), which is set to Any by
default (so it should just work). Here’s a summary
for a few popular DAW hosts:
Host software Sync settings
Digital Performer and
AudioDesk
Settings menu > Receive Sync > Sync to port
menu
Pro Tools Setup > Peripherals > Synchronization
Logic File > Project Settings > Synchronization >
General
Live Preferences > MIDI Sync
Cubase Transport > Project Synchronization Setup