Default Stereo Input/Output - MOTU V4HD User Manual

For mac os x firewire video interface

Table of Contents

V4HD to slave to an external word clock source,

such as the word clock output from a digital mixer

or a digital audio interface.

AES/EBU

The AES/EBU clock source settings refer to the

AES/EBU input pairs on the V4HD. This setting

allows the V4HD to slave to another device

connected to one of the V4HD's four

AES/EBU input pairs when video is disabled (see

"Enable Video" on page 50).

Use this setting whenever you are recording input

from a DAT deck or other AES/EBU audio device

into the V4HD. It is not necessary in the opposite

direction (when you are transferring from the

V4HD to the DAT machine).

If the AES/EBU settings do not appear in the menu,

it means that the V4HD's AES/EBU input bank is

currently disabled. Choose Enabled from the

AES/EBU input menu (Figure 8-1 on page 72).

For further details about this setting, see "Syncing

digital audio devices" on page 29.

SMPTE

When video is disabled (see "Enable Video" on

page 50), choose the SMPTE clock source setting

to resolve the V4HD directly to SMPTE time code

(LTC) being received via the LTC input. For details,

see chapter 10, "MOTU SMPTE Setup" (page 87).

Built-in audio

When video is disabled (see "Enable Video" on

page 50), choose this setting to resolve the V4HD

to your Mac's built-in audio. Doing so will ensure

that audio streams playing back from or recorded

by the V4HD will not drift apart from audio

streams simultaneously played or recorded by the

Mac's built-in mic, speakers or audio output.

Other audio devices (drivers)

When video is disabled (see "Enable Video" on

page 50), the MOTU FireWire Audio Driver has

the ability to resolve to other Core Audio drivers.

Doing so will ensure that audio streams playing

back from or recorded by the V4HD will not drift

apart from audio streams simultaneously played or

recorded by the other devices.