Specifications

Chapter 5: Serial Deck Control Mode (Configuration and Operation) 21
9 If you are using a SYNC I/O with
Pro Tools|HD, and if you have two machines
connected to the two 9-pin Out ports on the
SYNC I/O, repeat the above steps for the second
machine. (See “Selecting Machines in Serial
Deck Control Mode” on page 21 for more infor-
mation.)
10 Click OK to close the Peripherals dialog.
Machine Pre-Roll
You can set a variable amount of machine pre-
roll to account for the time it may take the ma-
chine to achieve servo lock. Shorter pre-roll val-
ues are usually better for non-linear machines.
Longer pre-roll values are usually better for older
tape transports.
The Machine pre-roll value is added to any pre-
roll specified in the Transport window.
To set MachineControl pre-roll:
1 In Pro Tools, choose Setup > Peripherals, and
click the Machine Control tab.
2 In the 9-pin Serial section, type the number of
frames of pre-roll in the Preroll box.
3 Click OK.
Selecting Machines in Serial Deck
Control Mode
When using the Digidesign SYNC I/O with two
machines connected to its 9-pin ports, use the
Peripherals dialog to choose a deck to control.
To choose machines for Serial Deck Control mode:
1 In Pro Tools, choose Setup > Peripherals, and
click the Machine Control tab.
2 In the 9-Pin Serial section, select the Enable
option to enable 9-pin Serial Deck Control
mode.
3 If necessary, select the port corresponding to
the 9-pin #2 of the SYNC I/O from the Port pop-
up menu. (This may be displayed by default.)
MachineControl will auto-detect and select the
machine type it finds connected to the selected
port.
4 If necessary, select a different Machine Type
that better matches your deck.
5 Repeat the above steps to auto-detect and se-
lect any machine connected to 9-pin #2 on the
SYNC I/O (select 9-pin port #2 in the 9-Pin Serial
Port selector).
6 When the appropriate machine is enabled and
selected, select the “Use Serial Time Code for Po-
sitional Reference” option.
Do not use the designated machine serial
port for any other function (such as time
code or MIDI metronome). Make sure that
9-pin is the only communication on the se-
lected port.
If you are using a Digidesign SYNC I/O con-
nected to your DigiSerial port, and your ma-
chine has time code reader capability, you
can route less cables by selecting the Use Se-
rial Timecode for Positional Reference op-
tion.