DigiDesign SYNC HD Manual page 33

Host Serial Port
The Host Serial port is a bidirectional (in/out)
port to connect the SYNC peripheral to the
DigiSerial Port on a HD Core card. When not be-
ing used with Pro Tools, the SYNC peripheral
Host Serial port can be connected to a standard
serial port on a supported computer to run the
SYNC Setup software utility (Windows only).
Video In/Out
Video In Receives a signal from an SD
(NTSC/PAL) video source for clock or VITC posi-
tional reference input, or for generating a win-
dow burn. This connector is internally termi-
nated at 75 ohms.
The Video In connector does not accept HD ref-
erence signals.
Video Out Outputs the current Video In signal.
This output can also carry VITC and/or Window
Burn information if those features are enabled.
MTC Out
The MTC Out outputs MIDI Time Code (MTC)
only. No other MIDI data appears at this output.
MTC output can be regenerated while the SYNC
peripheral is locked to any supported positional
reference and clock reference, or internally gen-
erated in Generate mode, in which case MTC
output follows generator run/stop. This port is
intended to supply MTC from the SYNC periph-
eral to external sequencers or other MIDI
devices.
MTC is output continuously whenever the
SYNC peripheral is generating time code. This
output can be muted when time code (LTC) is
idle. See "MTC Output and Idle Muting" on
page 56 for details.
LTC In/Out
LTC In Receives a Linear Time Code (LTC)
source, balanced or unbalanced analog, for posi-
tional and/or clock reference. This port is often
used to receive LTC from an audio track on an
external deck or the address track of a VTR. Ad-
justable LTC servo gain is available in Pro Tools
and from the front panel.
LTC Out Outputs linear time code, in balanced
or unbalanced analog audio format. The SYNC
peripheral can be set to mirror incoming LC on
this port, or to generate LTC based on incoming
serial time code.
LTC output level is adjustable from the Synchro-
nization page of the Peripherals dialog in
Pro Tools, the controls on the front panel of the
SYNC peripheral, or the SYNC Setup software
utility (Windows only).
See Appendix C, "Wiring Diagrams and Pin As-
signments" for wiring details.
AES/EBU In/Out
AES/EBU In Receives an AES/EBU digital audio
signal, for clock reference purposes only. The
SYNC peripheral utilizes only the signal's clock
information, not the audio information. If digi-
tal audio information is present at this input, it
will be ignored and not passed through to the
AES/EBU digital output connector.
AES/EBU Out Outputs a silent (all bits OFF)
AES/EBU audio signal whose sample rate exactly
matches the SYNC peripheral sample clock
Chapter 3: SYNC Peripheral Hardware and Software 27