User Manual

SYNCHRONIZATION

MTC MODE

Choose this synchronization mode when you want your

Express interface to slave to MIDI Time Code (MTC)

being sent from a device connected to one of its inputs.

This mode offers the least amount of time base stability, so

it is recommend that you try to set things up so that you

can use one of the other modes.

When your Express interface operates in MTC mode, it

locks to any MTC coming from your computer. In doing

so, however, it also “swallows” the MTC coming from the

computer. If you attempt to transmit MTC from your host

software to a speciﬁc MIDI device in your studio, it won’t

reach the MIDI device because it will get read and

“swallowed” by your Express interface. Since computer-

generated MTC is not as stable as other forms of time

code, you are better off doing just the opposite: send MTC

from your Express interface to the computer, and if

necessary, control your Express interface from your

computer software via MIDI Machine Control as

demonstrated in Figure 8-1 on page 68.

If you absolutely must transmit MTC from your computer

for some reason, See “Routing MTC to your MOTU

interface” on page 32 for important information about

routing MTC to your Express interface.

!USB Interfaces Manual Book Page 63 Tuesday, August 16, 2011 11:21 AM