User Manual

TRANSMIT SYNC
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Figure 88-1: Transmitting MTC to another device. If you are also
running another Core MIDI-compatible program (on MacOS) that
can slave to MTC, it will appear in this menu, allowing you to transmit
MTC to it from Digital Performer.
Choosing multiple MTC destinations
You can choose more than one destination by
clicking on the menu as many times as needed.
Choose the destination again from the menu to
turn off MTC transmission (and uncheck the
destination in the menu). On MacOS, you can also
send MTC to other Core MIDI-compatible
applications.
Setting the SMPTE frame rate
Choose the appropriate SMPTE format from the
Frame Rate command in the Setup menu.
Make sure both Digital Performer and the other
device is set to the same SMPTE frame rate.
Choosing a SMPTE start time
Choose “Set Chunk Start Time” from the sequence
menu in the Control Panel to set the chunk’s
SMPTE start frame. See “Setting the start time” on
page 193 for details. The start frame is the hour,
minute, second, and frame which Digital
Performer (and the other device) consider to be the
beginning of the sequence (on the first downbeat).
Other devices may refer to this as the SMPTE offset.
Transmitting MTC while slaved to external
Sync
When Digital Performer is set to Slave to External
Sync and is receiving MTC, incoming MTC is
echoed directly, rather than being regenerated by
Digital Performer.
MIDI BEAT CLOCKS
When you tell Digital Performer to transmit beat
clocks, Digital Performer becomes a master time
source: any MIDI devices (that can slave to beat
clocks) connected to Digital Performer will follow
Digital Performer’s tempo changes, and start or
stop along with the program. If the slave devices
respond to MIDI Song Position Pointer data, then
they will also follow Digital Performer when the
Counter location is changed or the Rewind button
is used.
Figure 88-2: Transmitting MIDI beat clocks to other devices. Choose
the desired USB interface from the Transmit beat clocks menu.
Choosing a USB interface to transmit beat
clocks to
Unlike MIDI Time Code, which can be routed to
specific devices on a multi-port interface like the
MIDI Express XT, beat clocks are not channel or
port specific, as defined by the MIDI specification.
As a result, they are sent to all devices connected to
the USB interface that you choose in the Transmit
Sync settings window.