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Syncing to smpte timecode – MOTU 828x 28x30 Audio Interface with ThunderTechnology User Manual

Page 31

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I N S T A L L I N G T H E 8 2 8 X H A R D W A R E

31

SYNCING TO SMPTE TIMECODE

The 828x system can resolve directly to SMPTE
timecode. It can also generate timecode and word
clock, under its own clock or while slaving to
timecode. Therefore, the 828x can act both as an
audio interface and as a digital audio synchronizer
to which you can slave other digital audio devices.
You can use the 828x to slave your audio software
to SMPTE as well, via sample-accurate sync (if
your host software supports it).

Other digital audio device

slaved to the 828x

Figure 4-15: Connections for synchronizing
the 828x directly to SMPTE timecode.

Choose

SMPTE

as the clock source in MOTU

Audio Console. This setting can also be made
in the MOTU SMPTE Console (shown below).

SMPTE timecode
source

audio cable bearing LTC
(Longitudinal timecode)

Thunderbolt or USB cable

Launch the MOTU SMPTE Console and specify the

SMPTE Source

,

which is the interface receiving the SMPTE timecode. Also, confirm
that the

Clock Source/Address

is

SMPTE/SMPTE

. For details about the

other settings, see chapter 10, “MOTU SMPTE Console” (page 113).

video
cable

audio

cable

SMPTE

out

Word

Out

Windows computer running Cubase or

other sample-accurate ASIO software

In Cubase, go to the Synchronization window and
choose

ASIO Audio Device

as the Timecode Base.

828x interface

SMPTE IN

quarter-inch jack

When lockup is achieved, the
LOCK/TACH light glows.

Use this setup if you have:

A SMPTE timecode source, such as a multitrack tape deck.

An 828x by itself, OR with another slaved device (such as a dig-
ital mixer).

Host software that supports sample-accurate sync (such as
Cubase or Nuendo).

This setup provides:

Continuous sync to SMPTE timecode.

Sub-frame timing accuracy.

Transport control from the SMPTE timecode source.