Instruction manual

Chapter 2: Installation and Configuration 21
Troubleshooting
Status LEDs
The Locked and Speed Cal status LEDs on the
SYNC peripheral front panel and in the Session
Setup window may help you isolate potential
problems.
Ref Present Indicator
The Ref Present indicator in the Session Setup
window indicates whether or not the SYNC pe-
ripheral is receiving valid Video Ref signal. If
this indicator is not lit, check your video con-
nections and termination status of the Video Ref
connectors on the SYNC peripheral.
Incoming Time Field
The Incoming Time field in the Session Setup win-
dow indicates whether or not the SYNC periph-
eral is receiving positional reference. If this field
appears to be inactive when inputting time code
to the SYNC peripheral, check your hardware
device settings, serial connection to your com-
puter, and your software settings.
Lost Communication
If Pro Tools loses communications with the
SYNC peripheral, a dialog appear asking you
whether you want to switch to MTC (if avail-
able) or continue trying to locate the SYNC pe-
ripheral. If you see a “lost communication” dia-
log, check power, DigiSerial, and other
connections.
Lost Communication Dialog
The Lost Communication dialog provides the
following options for re-establishing synchroni-
zation when communication with the SYNC pe-
ripheral stops:
Use MTC Click this button if the SYNC periph-
eral is unavailable, to switch to any currently
connected 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 Click this to leave the session config-
ured for the SYNC peripheral, or to continue
searching for the SYNC peripheral to re-estab-
lish lost communication.
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.
Ref Present indicator (Session Setup window)
Incoming Time Code display (Session Setup window)
Video Ref Present indicator
Incoming Time Code