MOTU 896HD User's Guide download pdf (Page 46)

MOTU FIREWIRE CONTROL PANEL (MAC OS 9)

■ From within other ASIO-compatible programs,

refer to their documentation.

It doesn’t matter which way you access the 896HD

settings. They are the same in all three places.

896HD SETTINGS

Figure 6-1: The MOTU FireWire Control Panel gives you access to all of

the settings in the 896HD hardware.

Sample Rate

Choose the desired Sample Rate for recording and

playback. The 896HD can operate at 44.1 (the

standard rate for compact disc audio), 48, 88.2, 96,

176.4 or 192KHz. If you are operating at a sample

rate between 44.1 and 96kHz, make absolutely sure

that all of the devices connected digitally to the

896HD match the 896HD’s sample rate. Also make

sure that your Digital Timepiece, MIDI

Timepiece AV or other digital audio synchronizer

matches it as well. At the 4x sample rates (176.4 or

192kHz), all digital I/O on the 896HD is disabled.

☛ Mismatched sample rates cause distortion and

crackling. If you hear this sort of thing, check the

sample rate settings in your hardware and here in

the MOTU FireWire Audio Console.

Operation at 4x sample rates (176.4 or 192kHz)

At the 4x sample rates (176.4 or 192kHz),

operation of the 896HD is restricted, due to the

higher audio bandwidth demands, as follows:

■ 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 49). 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

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MOTU 896HD User's Guide Page 46

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