Syncing To Smpte Time Code - MOTU 828mkII User Manual

SYNCING TO SMPTE TIME CODE

The 828mkII system can resolve directly to SMPTE
time code. It can also generate time code and word
clock, under its own clock or while slaving to time
code. Therefore, the 828mkII can act both as an
audio interface and digital audio synchronizer, to
which you can slave other digital audio devices.
You can use the 828mkII to slave your audio
software to SMPTE as well, as long as your software
supports sample-accurate sync, which is the means
by which the software follows the 828mkII. The
accuracy may not be sample-accurate, but in most
cases it will be very close.
audio cable bearing LTC
(Longitudinal Time Code)
SMPTE IN
quarter-inch jack
SMPTE Word
out Out
audio video
cable cable
Other digital audio device
slaved to the 828mkII AudioDesk, Digital Performer or other
Figure 3-14: Connections for synchronizing the 828mkII directly to SMPTE time code.
I N S T A L L I N G T H E 8 2 8 M K I I H A R D W A R E
In AudioDesk or Digital Performer:
1. Choose Receive Sync the Setup menu
(Basics menu under OS 9).
2. Choose the Sample-accurate option
shown to the left.
3. Make sure that Slave to External Sync
is checked in the Studio menu (Basics
menu under OS 9).
SMPTE time code source
When lockup is achieved, the LOCK
light illuminates and the TACH light
blinks once per second.
828mkII interface
FireWire cable
Macintosh computer running
sample-accurate software.
Use this setup if you have:
✓
A SMPTE time code source, such as a multitrack tape deck.
✓
An 828mkII by itself, OR with another slaved device (such as a
digital mixer).
✓
Host software that supports sample-accurate sync.
This setup provides:
✗
No sample-accurate locating.
✓
Continuous sync to SMPTE time code.
✓
Sub-frame timing accuracy.
✓
Transport control from the SMPTE time code source.
For sample-accurate sync settings in
Cubase, see "Sample-accurate sync with
Cubase or Nuendo" on page 96.
Choose SMPTE as the clock source in AudioDesk, Digital
Performer, or the MOTU FireWire Audio Console. This
setting can also be made in the MOTU SMPTE Console
(shown below).
Launch the MOTU SMPTE Console to specify the time code frame
rate and amount of freewheel. Also, confirm that the Clock
Source/Address is SMPTE/SMPTE. For details about the other
settings, see chapter 13, "MOTU SMPTE Console" (page 103).
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