Connecting And Syncing S/Pdif Devices; Power Options - MOTU UltraLite- mk3 User Manual

CONNECTING AND SYNCING S/PDIF
DEVICES
DAT decks and other devices with S/PDIF digital
I/O will sync to the UltraLite-mk3 in via the
S/PDIF connection itself. Just connect it to the
UltraLite-mk3 via the S/PDIF connectors. When
the device records a digital audio signal (from the
UltraLite-mk3), it will simply synchronize to the
clock provided by the digital audio input.
On the other hand, when you transfer audio from
the S/PDIF device into the UltraLite-mk3, you'll
have to slave the UltraLite-mk3 to its S/PDIF input.
UltraLite-mk3
S/PDIF device
UltraLite-mk3
Clock Source setting =
S/PDIF (when transferring from the
other device to the UltraLite-mk3)
Figure 3-6: The setup for synchronizing a S/PDIF device with the
UltraLite-mk3. Sync is achieved via the digital I/O connection itself. In
this case, you have to choose S/PDIF as the UltraLite-mk3's clock
source when recording from the other device.

POWER OPTIONS

The UltraLite-mk3 can draw power from two
possible sources: the computer (via FireWire) or a
DC power supply.
Bus power requirements
The UltraLite-mk3 draws all the power it needs
from the FireWire bus connection to the computer.
However, the FireWire connection to the computer
must meet all of the requirements discussed below.
I N S T A L L I N G T H E U L T R A L I T E - M K 3 H A R D W A R E
S/PDIF
S/PDIF
UltraLite-mk3
Clock Source setting =
Internal (when transferring from the
UltraLite-mk3 to the other device)
6-pin FireWire connectors
The UltraLite-mk3 can only draw power over the
FireWire bus from a 6-pin to 6-pin cable, or a 6-pin
to 9-pin (FireWire B) cable. It cannot draw power
from a FireWire cable with a 4-pin connector, as
shown below:
✓ ✗
YES
6-pin FireWire
Figure 3-7: 4-pin FireWire connectors cannot be used for bus power.
When operating under bus power, daisy-chaining
is not recommended
The UltraLite-mk3 can be daisy-chained with
other FireWire devices from a single FireWire
connection to the computer. However, if the
UltraLite-mk3 is operating under bus power, this is
not recommended. If you need to daisy chain the
UltraLite-mk3 with other devices on the same
FireWire bus, power the UltraLite-mk3 with the
included power adaptor. The other devices on the
chain should also have their own power supply. In
general, bus-powered FireWire devices should not
be daisy-chained.
FireWire adapter products must be powered
If you are using a FireWire adapter (a third-party
product that supplies one or more FireWire ports
to your computer), it must have direct access to a
power supply:
PCI FireWire cards — If you plan to connect the
■
UltraLite-mk3 to a PCI card and run the
UltraLite-mk3 under bus power, the PCI card must
have a direct connection to the power supply
harness inside your computer. This is the same
power supply harness to which you connect
internal hard drives, CD/DVD drives, etc.
NO
4-pin FireWire
19