Sample-Accurate Adat Sync - MOTU 828mkII User Manual

SAMPLE-ACCURATE ADAT SYNC

The 828mkII can achieve sample-accurate sync
with ADATs, Alesis hard disk recorders or any
ADAT Sync-compatible devices. Sample-accurate
software is required, such as AudioDesk, Digital
Performer, or Mac OS 9 ASIO 2.0-compatible
software that also supports sample-accurate sync.
Connect the 828mkII to the end of the ADAT Sync
chain and make the software settings shown below
in Figure 3-12. If you will be using the stand-alone
recorder for its analog inputs and outputs only
(you won't be doing any recording with it), treat it
as an 'optical' device. See "Syncing optical devices"
on page 29.
Macintosh computer running AudioDesk, Digital
Performer or other sample-accurate software.
FireWire
If you have a MOTU
synchronizer, set its
sync mode to Internal.
ADATs
FireWire
Figure 3-12: Connections for sample-accurate ADAT sync.
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
Use this setup if you have:
✓
ADATs, Alesis hard disk recorders or any ADAT SYNC
compatible device(s).
✓
A MOTU Digital Timepiece, MIDI Timepiece AV or other
ADAT synchronizer.
✓
Host software that supports sample-accurate sync.
This setup provides:
✓
Sample-accurate locating between all ADAT SYNC-compati-
ble devices, the 828mkII and your software (AudioDesk,
Digital Performer or other sample-accurate software).
✓
With a Digital Timepiece, this setup provides sample-accurate
locating across all devices: ADAT, Tascam and the 828mkII.
✓
Transport control of everything from the computer, OR
continuous sync to SMPTE time code and other sync sources
(the other source is the transport master in this case).
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).
USB or serial cable (bi-directional MIDI
connection) bearing MMC transport
commands from AudioDesk or
Digital Performer to the
MIDI Timepiece AV (or other synchronizer)
Digital Timepiece, MIDI Timepiece AV,
Alesis BRC or any other MMC-compatible
ADAT synchronizer
ADAT
Sync Out
In AudioDesk or Digital
ADAT
Performer, turn on MIDI
sync cables
Sync In
Machine Control by pressing
Sync Out
this button. This brings on line
all the recorders connected to
the DTP or MTP AV.
Sync In
etc.
Sync Out AudioDesk automatically scans
the DTP or MTP AV for
connected recorders, and they
Sync In
appear here.
Sync Out
Sync In
To set the 828mkII hardware clock source for sample-
accurate sync:
1. In AudioDesk or Digital Performer, choose MOTU Audio
System>Configure Hardware Driver from the Setup
menu (or the Basics menu under OS 9), or run the MOTU
FireWire Audio Console.
2. Choose ADAT 9-pin from the Clock Source menu as
shown to above.
3. Make sure the Sample Rate setting matches the recorder
and synchronizer.
For sample-accurate sync settings in Cubase, see
"Sample-accurate sync to ADAT" on page 5.
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