Mackie D8B Owners Manual - Page 123

Sync Hub, Master Word Clock, Out From D8B

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Proper Sync Connection Every digital system needs a master sync source. The D8B prefers to be the master source but will function as a master or slave. Follow these simple steps to help assure a successful digital setup: • Determine which piece of gear is the master. The master must be able to generate proper word clock that can be read by all other digital equipment. • Set all digital equipment to the exact same word clock rate-typically 44.1 or 48kHz. • Connect the word clock output from the master device to the word clock input of the slave devices. Each digital device connected to the digital audio chain must receive a common word clock source, either directly or from a slave. • It is common procedure to chain word clock through digital devices. The D8B can provide master word clock to a central word clock hub, then the hub can send to multiple digital slaves (DAWs, MDMs, digital effects, etc.). • Set every slave device to respond to external word clock. • Draw a digital word clock flow chart for your system. This will help you verify a logical connection scheme. One piece of equipment connected incorrectly can mess up your entire system. Rats! The following illustration shows a common sync setup, using the Digital 8•Bus as the master word clock source and a hub to distribute to other digitally connected devices. Here are two more sample setups that include the D8B and other digital devices which depend on accurate and solid word sync. 9-pin OUT 9-pin IN Word Clock OUTPUT MIDI MIDI IN OUT Word Clock INPUT Word Clock OUTPUT Computer 9-pin PCI-324 OUT 9-pin IN Control Track IN MIDI MIDI IN OUT Control Track 1 DTP Word Clock INPUT From PCI 324 Word Clock OUTPUT MIDI MIDI IN OUT Word Clock INPUT Word Clock INPUT MIDI MIDI IN OUT Computer Digital 8•Bus Master Word Clock Out From D8B Sync Hub Modular Digital Multitrack Modular Digital Multitrack PCI 324 card output 2408 Word Clock OUTPUT Use expensive, properly impedance-matched cabling! It's worth it! Note: When using the D8B as the master sync source, always power it up before other digitally connected gear. You'll have a much better day. D8B Manual • Chapter 4 • page 117

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D8B Manual • Chapter 4 • page
117
Proper Sync Connection
Every digital system needs a master sync source.
The D8B prefers to be the master source but will
function as a master or slave. Follow these simple
steps to help assure a successful digital setup:
•
Determine which piece of gear is the master. The
master must be able to generate proper word
clock that can be read by all other digital equipment.
•
Set all digital equipment to the exact same word
clock rate—typically 44.1 or 48kHz.
•
Connect the word clock output from the master
device to the word clock input of the slave
devices. Each digital device connected to the
digital audio chain must receive a common word
clock source, either directly or from a slave.
•
It is common procedure to chain word clock
through digital devices. The D8B can provide
master word clock to a central word clock hub,
then the hub can send to multiple digital slaves
(DAWs, MDMs, digital effects, etc.).
•
Set every slave device to respond to external
word clock.
•
Draw a digital word clock flow chart for your
system. This will help you verify a logical
connection scheme. One piece of equipment
connected incorrectly can mess up your entire
system. Rats!
The following illustration shows a common sync
setup, using the Digital 8•Bus as the master word
clock source and a hub to distribute to other digitally
connected devices.
Modular Digital Multitrack
Modular Digital Multitrack
Sync Hub
Digital 8•Bus
Master Word Clock
Out From D8B
Here are two more sample setups that include the
D8B and other digital devices which depend on
accurate and solid word sync.
9-pin
OUT
MIDI
IN
MIDI
OUT
MIDI
IN
MIDI
OUT
DTP
Word Clock
INPUT
Word Clock
INPUT
Word Clock
OUTPUT
Word Clock
OUTPUT
9-pin
IN
Control
Track IN
Control
Track 1
9-pin
OUT
PCI-324
9-pin IN
Computer
Computer
MIDI
IN
MIDI
OUT
PCI 324
card output
From PCI 324
MIDI
IN
MIDI
OUT
2408
Word Clock
INPUT
Word Clock
OUTPUT
Word Clock
OUTPUT
Word Clock
INPUT
Computer
Computer
Use expensive, properly impedance-matched
cabling! It’s worth it!
Note:
When using the D8B as the master sync source,
always power it up before other digitally connected
gear. You’ll have a much better day.