Generating A Window Dub - DigiDesign SYNC HD Manual

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 time code (LTC) is idle.
To mute idle-time MTC output:
From Pro Tools
Choose Setup > Peripherals and click Synchro-
1
nization.
Select the Idle MTC Enabled option.
2
Click OK.
3
From the front panel:
Press Set, and use the Up and Down switches
1
to display Idle MTC ("IdLE 7C").
Press Set to display the current state (On or
2
Off).
Press the Up or Down switches to toggle the
3
Idle MTC setting.
Press Set.
4
From the SYNC Setup software utility
(Windows only):
Select the Idle MTC Enabled option.
56 SYNC HD Guide

Generating a Window Dub

SYNC peripherals offer time code character gen-
eration. This superimposes onto an SD video sig-
nal a small area called a window dub (or window
burn, or time code window) that displays time
code 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 regions to video frames in Pro Tools, es-
pecially if your only time code reference from
tape is LTC (Auto-Spot requires VITC).
The SYNC peripheral character generator ob-
tains its time code address from the chosen Po-
sitional Reference.
Window Dub Requirements
Existing Video Signal SYNC peripherals can only
insert a time code window into an existing SD
video signal. This means that at least one video
source signal (from a VTR, nonlinear editing sys-
tem, or other video device) must be present at
one of the SYNC peripheral video input connec-
tors (Video In or Video Ref). When generating 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.