Troubleshooting Smpte/Mtc Sync - CAKEWALK PRO AUDIO User Manual

Troubleshooting SMPTE/MTC Sync

The most common problems with SMPTE/MTC Sync, and ways to
correct or avoid them, are shown in the following table:
Problem...
The tape is striped incorrectly
The MIDI interface isn't producing
MIDI Time Code
The frame rate is set incorrectly
The offset is set incorrectly
Pro Audio is not configured correctly
Audio playback drifts out of sync
with the tape
Pro Audio continues playing for up
to one full second after the time
code stops
What to do...
Check the tape stripe using your time
code generator and, if necessary, restripe
the tape.
Use utility programs that come with your
MIDI interface to make sure that the time
code stripe is being received (sometimes
you must enable a Time Code Sync
option). Check the MIDI interface settings
to make sure that MIDI Time Code is
being generated.
stripe must
The frame rate on the
match the frame rate you set in Pro
Audio.
The offset you enter in Pro Audio must
match the start time of recorded material
on the tape.
Verify and/or repeat the steps in
"Configuring Pro Audio to Sync to
SMPTE/MTC..." on page 15-10.
Enable the Full Chase Lock option, which
keeps audio from freewheeling.
Some time code readers tolerate dropouts
of up to one second, without affecting
playback. When you stop the tape deck,
it takes a full second for the reader to
realize that this isn't merely a dropout and
to signal the end of the time code to Pro
Audio. This does not indicate any
problem with time code sync.
15-13