DigiDesign Digidesign Pro Tools 8.0, Reference Manual

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Pro Tools Reference Guide 104
MMC ID
The MMC ID setting lets you specify the MMC
ID number for which MMC information will be
sent. MMC commands contain an ID number to
identify which machine should respond to the
MMC command. There are 128 MMC ID num-
bers, from 0–127. The default of ID #127 is a spe-
cial setting that transmits to all 128 MMC IDs.
With a setting of 127, Pro Tools will transmit
MMC commands to all MMC IDs.
Preroll
The Preroll setting lets you specify a pre-roll
time in frames for your MMC slave device. Pre-
roll is needed to provide the device with suffi-
cient time to lock to the time code transmitted
by Pro Tools. This value will vary depending on
the external device. If the pre-roll time is insuf-
ficient, the device may not be ready to lock until
after the current time code position has passed.
MIDI Machine Control (Slave)
Enable
When the
Enable
option is selected, Pro Tools is
the slave and it receives MMC commands from
the master device and sends MTC information
back to the slave device.
MMC ID
The MMC ID setting lets you specify the MMC
ID number for which MMC information will be
received.
9-Pin Machine Control (Deck Control)
(Pro Tools HD with Machine Control Only)
The
9-Pin Machine Control (Deck Control)
settings
let you configure a MachineControl device for
Serial Deck Control mode with Pro Tools. Serial
Deck Control mode is available whenever Ma-
chineControl is connected using the Serial Deck
Control cable. When connected for Serial Deck
Control mode, MachineControl enables all
Pro Tools track arming, synchronization, and
Transport features, as available on your system.
Serial Deck Control mode also supports 9-pin se-
rial time code.
Enable
When the
Enable
option is selected, Pro Tools is
in Serial Deck Control mode.
Port
The
Port
setting lets you select the 9-pin Machi-
neControl port. The available choices depend
on your platform and configuration
Machine Type
After you select a port, Pro Tools automatically
polls the port to see what kind of machine is
connected. If the machine is recognized,
Pro Tools loads the corresponding
Machine Type
.
This includes the corresponding track layout
and automatically enters the name of that ma-
chine into the Machine Track Arming window.
However, if the machine is not recognized, the
“ Generic 1” personality is automatically loaded.
Preroll
The
Preroll
setting lets you specify a variable
amount of machine preroll to account for the
time it may take the machine to achieve servo
lock. Shorter preroll values are usually better for
non-linear machines. Longer preroll values are
usually better for older tape transports. The Ma-
chine preroll value is added to any preroll spec-
ified in the Transport window.