DigiDesign SYNC HD, Manual

Page: 33 / 103

Chapter 3: SYNC HD Hardware and Software 27
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 Output of the current Video In signal.
If the Positional Reference is set to Generate and
the Clock Reference is set to one of the two
video inputs, this will output a copy of the video
signal appearing at the Video Reference In. In ei-
ther case, this output can also carry VITC and/or
Window Burn information if those features are
enabled.
MTC Out
The MTC Out will output MIDI Time Code
(MTC), only. No other MIDI data appears at this
output. MTC output can be regenerated while
the SYNC HD is locked to any supported posi-
tional reference and clock reference, or inter-
nally generated in Generate mode, in which
case MTC output follows generator run/stop.
This port is intended to supply MTC from the
SYNC HD to external sequencers or other MIDI
devices.
MTC is output constantly whenever the
SYNC HD 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. See
Appendix C, “Wiring Diagrams and Pin Assign-
ments” for wiring details. LTC output level is
also adjustable using the SYNC Setup software
utility (Windows only), the controls on the
front panel of the SYNC HD, or the Synchroni-
zation page of the Peripherals dialog in
Pro Tools.
AES/EBU In/Out
AES/EBU In
Receives an AES/EBU digital audio
signal, for clock reference purposes only. The
SYNC HD utilizes only the signal's clock infor-
mation, not the audio information. If digital au-
dio 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 HD sample clock