Specifications

SYNC HD Guide56
MTC Output and Idle Muting
MTC is normally output whenever LTC is out-
put. Whenever LTC output stops, the SYNC pe-
ripheral will continue to output MTC in bursts
of one frame every 200 milliseconds. This allows
any connected MIDI-reading device to be con-
tinuously updated as to the position of VITC or
Bi-Phase (either of which might be operating at
slow or still speeds). Thus, you can still use a
connected MIDI device for Auto-Spotting from
VITC or Bi-Phase.
Optionally, this constant output can be set to
mute when timecode (LTC) is idle.
To mute idle-time MTC output using Pro Tools:
1 Choose Setup > Peripherals and click Synchro-
nization
.
2 Select the Idle MTC Enabled option.
3 Click OK.
To mute idle-time MTC output using the front panel
controls:
1 Press Set, and use the Up and Down switches to
display Idle MTC (“IdLE 7C”).
2 Press Set to display the current state (On or
Off).
3 Press the Up or Down switches to toggle the
Idle MTC setting.
4 Press Set.
To mute idle-time MTC output using the SYNC
Setup software utility (Windows only):
 Select the Idle MTC Enabled option.
Generating a Window Dub
SYNC peripherals offer timecode character gen-
eration. This superimposes onto an SD video
signal a small area called a window dub (or win-
dow burn, or timecode window) that displays
timecode in hours:minutes:seconds:frames.
A window dub provides a visual cue to your lo-
cation in a project, and can be helpful when
spotting clips to video frames in Pro Tools, es-
pecially if your only timecode reference from
tape is LTC (Auto-Spot requires VITC).
The SYNC peripheral character generator ob-
tains its timecode address from the chosen Posi-
tional Reference.
Window Dub Requirements
Existing Video Signal SYNC peripherals can only
insert a timecode window into an existing SD
video signal. This means that at least one video
source signal (from a VTR, nonlinear editing
system, or other video device) must be present
at one of the SYNC peripheral video input con-
nectors (Video In or Video Ref). When generat-
ing a window dub, the VITC Timing Rule applies
(see “VITC Timing Rule” on page 71.
SYNC Peripheral Output The signal from the
SYNC peripheral Video Out connector must be
routed to a video destination such as another
VTR or nonlinear editing system.