User Manual-Windows

ManualsBrandsMOTU ManualsAudio Interfaces & SystemsHD192 - 12 Input / 12 Output High Resolution Hard Disc Recording System with PCIe Card for Mac and Windows

INSTALLING THE PCI-424 HARDWARE

SYNCING SPDIF DEVICES

DAT decks and other SPDIF devices will sync to a

2408mk3 interface in one of two ways:

■ Via the SPDIF connection itself

■ Via word clock

SPDIF devices with no word clock

If your DAT deck or other SPDIF device has no

word clock sync connectors, just connect it to the

2408mk3 via the SPDIF connectors. When the

SPDIF device is programmed to receive digital

audio on its input (from the 2408mk3), it will

simply synchronize to the clock provided by the

audio input.

On the other hand, when you transfer audio from

the SPDIF device into the 2408mk3, you’ll have to

slave the 2408mk3 to the SPDIF input. If you have

other digital audio devices connected to the

2408mk3, and they are not slaved directly to the

2408mk3 itself, you may hear clicks and pops

resulting from their unsynchronized audio clock. If

so, just turn them off during the transfer.

SPDIF devices with word clock

If your SPDIF device has a Word Clock input,

connect the 2408mk3’s word clock Output to the

SPDIF device’s Word Clock input. You can then

freely transfer audio between the 2408mk3 and the

SPDIF device, regardless of how the rest of your

2408mk3 rig is synchronized.

SPDIF

DAT deck

or other SPDIF device

2408mk3

With this setup, in the MOTU PCI Audio

Console window, choose Internal, or any

other clock source setting except SPDIF.

The DAT deck (or other SPDIF device)

slaves to the 2408mk3 via word clock for

SPDIF transfers in both directions.

Word Clock Out

Word Clock In

SPDIF

DAT deck

or other TDIF device

2408mk3

MOTU PCI Audio Console window

Clock Source setting

MOTU PCI Audio Console window

Clock Source setting

When transferring from

the 2408mk3 to the SPDIF device

When transferring from

the SPDIF device to the 2408mk3

Figure 4-30: Two setups for synchronizing an SPDIF device with a 2408mk3. In the top diagram, sync is achieved via the SPDIF connection itself.

In this case, you have to choose SPDIF as the PCI-424’s clock source when recording from the SPDIF device. If you don’t want to have to worry

about switching the Clock Source setting depending on the direction of the SPDIF transfer, you can slave the SPDIF device to word clock from the

2408mk3 or vice versa (not shown). The Word Clock connection maintains sync, regardless of the direction of the transfer.