Specifications

Chapter 2: Installation and Configuration 21
Troubleshooting
Status LEDs
The status LEDs (LOCKED and SPEED CAL) on
the SYNC I/O front panel and in the Session
Setup window may help you isolate potential
problems.
Use the Incoming Time field in Pro Tools
Session Setup Window as a Reference
The Incoming Time field in the Session Setup
Window indicates whether or not SYNC I/O is
receiving positional reference. If this field ap-
pears to be inactive when inputting time code to
SYNC I/O, check your hardware device settings,
serial connection to your computer, and your
software settings.
Lost Communication
If Pro Tools loses communication with
SYNC I/O, a dialog will appear asking you
whether you want to switch to MTC (if avail-
able) or continue trying to locate SYNC I/O. If
you see a “lost communication” dialog, check
power, DigiSerial, and other connections.
If you switched ports in order to update firm-
ware using the SYNC I/O Setup software utility
(Windows only), check to make sure you recon-
nected SYNC I/O to the DigiSerial port on your
HD Core card.
Lost Communication Dialog
The Lost Communication dialog provides the
following options for re-establishing synchroni-
zation when communication with SYNC I/O
stops:
Use MTC Click this button if the SYNC I/O is
unavailable, to switch to any currently con-
nected MIDI interface for MTC synchroniza-
tion. This option requires a compatible device
that supports MTC conversion, and that is al-
ready connected to your CPU and enabled.
Keep SYNC I/O Click this to leave the session
configured for SYNC I/O, or to continue search-
ing for the SYNC I/O to re-establish lost com-
munication.
Synchronization Accuracy
If you are noticing drift or lack of accurate syn-
chronization between your devices, check the
following:
◆ If your system locks up in the wrong place,
make sure you have set the correct frame rate
and format (NTSC or PAL) on all your devices.
◆ If your system locks up in the correct location,
but drifts, check your clock signals and settings.
Incoming Time Code display (Session Setup window)
Incoming Time Code
On early versions of Pro Tools HD cards,
there were two serial ports. Only the port
closest to the interface connection is active.