MOTU 896HD User's Guide download pdf (Page 39)

MOTU FIREWIRE AUDIO CONSOLE (MAC OS X)

■ All digital I/O is disabled (there is no optical and

no AES/EBU input/output).

■ The 896HD provides 8 channels of analog input

and 10 channels of analog output (8 XLR outputs

plus stereo headphone out), simultaneously.

■ CueMix DSP supports 2 independent monitor

mixes (instead of 4, as with the lower sample rates).

For details about CueMix DSP, see chapter 12,

“CueMix Console” (page 93).

■ The Mix1 input, as described in “Mix1 1-2” on

page 64, is not available.

■ The headphone output can be assigned to any

analog output pair or the Phones setting (as

described in “Phones” on page 41). But at the 4x

sample rates, the Phones output is not available

from the computer. Instead, it is only available as a

destination for the two CueMix DSP mixes. In

other words, it can only take CueMix inputs.

■ The main outs mirror the phones.

Clock Source

The Clock Source determines the digital audio

clock that the 896HD will use as its time base. For a

complete explanation of synchronization issues,

see “Making sync connections” on page 19. The

following sections brieﬂy discuss each clock source

setting.

Internal

Use the Internal setting when you want the 896HD

to operate under its own digital audio clock. For

example, you may be in a situation where all you

are doing is playing tracks off hard disk in your

digital audio software on the computer. In a

situation like this, you most often don’t need to

reference an external clock of any kind.

Another example is transferring a mix to DAT. You

can operate the 896HD system on its internal

clock, and then slave the DAT deck to the 896HD

via the AES/EBU connection (usually DAT decks

slave to their AES/EBU input when you choose the

AES/EBU input as their record source) or via the

896HD’s word clock output (if your DAT deck has

a word clock input).

If you would like help determining if this is the

proper clock setting for your situation, see “Do you

need a synchronizer?” on page 20.

With ADAT devices, however, you usually want an

external digital audio synchronizer, such as the

MIDI Timepiece AV or Digital Timepiece, to be the

digital clock master. In this case, you would set the

896HD clock source setting to ADAT 9-pin, as

described below.

AES/EBU

The AES/EBU clock source setting refers to the

AES/EBU input connector on the 896HD. This

setting allows the MOTU 896HD to slave to

another AES/EBU device.

Use this setting whenever you are recording input

from a DAT deck or other AES/EBU device into the

896HD. It is not necessary in the opposite direction

(when you are transferring from the 896HD to the

DAT machine).

For further details about this setting, see “Syncing

AES/EBU devices” on page 26.

Wor d C l o ck I n

The Word C lo c k In setting refers to the Word Clock

In BNC connector on the 896HD rear panel.

Choosing this setting allows the 896HD to slave to

an external word clock source, such as the word

clock output from a digital mixer or another

MOTU FireWire interface.

ADAT 9-pin

The ADAT 9-pin clock source setting refers to the

ADAT digital audio synchronization format. It

allows the 896HD to slave to an ADAT — or ADAT

sync chain — via its ADAT sync 9-pin connector.

ADAT sync also carries precise, sample location

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MOTU 896HD User's Guide Page 39

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