Specifications

MachineControl Guide22
Serial Time Code
If you are using a Digidesign SYNC I/O con-
nected to your DigiSerial port, and your ma-
chine has 9-pin time code reader capability, you
can take advantage of serial time code to achieve
faster lockup times.
Serial time code can only be supplied by ma-
chines with built-in time code readers which
can serialize the time code when MachineCon-
trol requests it. Most professional machines
have such readers (such as Beta, DA-88, D2,
Digi-Beta, and some 3/4-inch decks).
To enable Serial Time Code:
1 In Pro Tools, choose Setup > Peripherals, and
click the Synchronization tab.
2 Make sure the SYNC I/O (or USD) and DigiSe-
rial port are the selected device and port.
3 Ensure that both the SYNC I/O (or USD) and
the external machine are locked to the same
video reference signal.
4 Click the Machine Control tab in the Periph-
erals dialog to display the Machine Control
page.
5 Select the “Use Serial Time Code for Positional
Reference option.”
Serial Time Code and SYNC I/O
Settings
When Serial Time Code is enabled, the
Pro Tools Clock Reference switches to Video
Reference. Additionally, the Positional Refer-
ence pop-up is grayed out and displays Serial
Time Code. (These controls are located in the
SYNC I/O Settings section of the Session Setup
window.)
Generate and Serial Time Code
Pro Tools automatically puts the SYNC I/O (or
USD) in Generate mode and prohibits any
changes to the Positional and Clock Reference
settings. While Serial Time Code is being used,
this Generate mode is engaged to calculate
frame-edge accuracy in Pro Tools.
Serial TIme Code enabled in the Peripherals dialog