MOTU PCI-424, User Manual

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T R O U B L E S H O O T I N G
122
ADAT-compatible or Tascam tape decks -
converting 48kHz tracks to 44.1kHz
If the audio on your ADAT or Tascam tape was
recorded at 48kHz, then you must transfer that
audio into your host software at 48kHz. If you plan
to digitally mix this data and burn an audio CD,
you must convert your audio to 44.1kHz with your
host software. Once you sample rate convert your
audio to 44.1kHz, you will have to set the sample
rate in the console back to 44100 so you can play
the file. You always want your digital clocks and
sample rates to match when dealing with any kind
of digital audio transfer or synchronizing.
ADAT-compatible or Tascam tape decks - device
order in MIDI Machine Control window
When powered on, most modular digital multi
tracks ‘wake up’ configured to record from their
analog inputs by default. You won't be able to
record from the PCI-424 system to a MDM until it
is switched to digital input. Tip: configure this in
ClockWorks or AudioDesk if you want your decks
to come up in the right mode when powered on.
The order of devices in the DTP panel of the MIDI
Machine Control window is not controlled by the
order of connections to the PCI-424 system. This
can be confusing unless you make them match
when connecting the system.With Tascam units,
make sure to assign their hardware IDs in the order
that they are connected to 2408mk3 digital I/O
banks. With ADATs make sure to chain their sync
connections in the order that they are connected to
2408mk3 banks.
No input from an ADAT or Tascam tape deck
If you are having trouble recording on your ADAT
or Tascam tape deck from the 2408mk3, check the
Digital input setting. After power cycling, tape
decks often come up configured to record from
their analog inputs. You won't be able to record
from the 2408mk3 to a tape deck until it is switched
to digital input. Tip: configure this in ClockWorks
or AudioDesk if you want your decks to come up in
the right mode when power cycled.
ADATs and the DTP - lock up time allowances
ADATs can take a while to sync to the DTP. For
example, when recording from a 2408mk3 to the
ADATs, they may appear to chase and lock, but the
record button continues to flash. Recorded data on
the tape won’t be sample accurate until the record
light stops flashing. Solution: add more pre-roll
time.
Alesis blackface (classic) ADAT optical sync
If you are using a Classic (black-faced) ADAT as a
sync master in your PCI-424 system, and you want
to record sample accurately into it, you must
configure it to use its internal clock, instead of
slaving to the optical input. To do this, hold down
the SET LOCATE button and press the DIGITAL
IN button. This will toggle the ADAT between
external sync (shown as “diG”) and internal sync
(“int”). Note that the ADAT will return to the “diG”
setting each time it is powered off.
Alesis ADAT track offset
If you find that sample accurate transfers from an
ADAT are displaced by a small amount, try to reset
the ADAT to its factory default state. This is
accomplished by powering on the ADAT while
holding down the RECORD and PLAY keys simul-
taneously. The ADAT LX uses a ‘soft’ power key so
LX users will have to unplug and plug the ADAT LX
while holding down the RECORD and PLAY keys.
Tascam TDIF and word clock
If any Tascam TDIF units are connected, they must
be word locked to the PCI-424 system. The Tascam
TDIF protocol does not contain word clock, so you
must slave the Tascam to the 2408mk3’s word clock
output. For detailed instructions on how to
accomplish this, see “Syncing Tascam ‘TDIF’
devices” on page 47, “Syncing to a DA-88/98 time
code track” on page 45, or “Sample-accurate