Apple Logic Pro 7 - Manual (Page 649)

Chapter 21 Song Settings and Preferences 649
Note: If your devices can follow MTC (MIDI Time Code), you should leave this option
unchecked, and make use of Logic’s MTC functions.
MIDI Time Code (MTC): Pickup Delay
This parameter should generally be set to zero to ensure the quickest possible pickup
time while Logic is in MTC sync mode. There are, however, some devices which seem to
transmit imprecise MTC commands when first started. As a result, sync might not be
perfectly reliable, and there could be an offset every time synchronization is
established. In such situations, you can set a delay for MTC pickup, and Logic will ignore
the initial MTC commands. A (frame) value of 25 to 30 corresponds to a delay of about
a second, depending on the frame rate. Use this parameter when synchronized to hard
disk recorders and other devices, if the sync doesn’t appear to be consistent.
MIDI Time Code (MTC): Transmit MTC Delay
This parameter allows you to delay the transmission of MIDI Time Code. Negative
values result in MTC being transmitted earlier. This facility enables you to compensate
for any reaction delays (to incoming MIDI Time Code) in external MTC slaves.
MIDI Machine Control (MMC): MMC Uses:
This pull-down menu offers the following options:
• MMC standard messages: The MIDI MMC specification is strictly followed.
• Old Fostex Format: The old Fostex format is used for MIDI Machine Control.
MMC Output ID (Transport)
The All checkbox sends MMC to all ports. The panel to the right allows you to specify an
output port ID. To do so, simply type in the desired value.
MMC Input ID (Transport)
The All checkbox sends MMC to all ports. The panel to the right allows you to specify an
input port ID. To do so, simply type in the desired value.
Transmit MMC Locate Commands When: Pressing Stop twice
This checkbox enables transmission of MMC Locate commands when the Stop
command is pressed twice (either on the Transport of by key command).
Transmit MMC Locate Commands When: Dragging Regions
If this option is enabled and Logic is stopped (not in Play or Record mode), MMC locate
commands are sent with the position of a Region that is dragged in the Arrange
window
Transmit Record enable commands for audio tracks
If this option is enabled, MMC record enable commands are also sent when audio
tracks are record enabled (armed) or disabled. In addition, any received MMC Record
enable commands will set the record enable status of audio tracks.