Specifications

SYNC HD Guide54
To regenerate VITC based on an external
positional reference using the SYNC Setup
software utility (Windows only):
1 Ensure that the SYNC peripheral is connected
in-line with a video source and video destina-
tion.
2 Ensure that VITC Insertion Enabled is selected
and that you have selected the appropriate video
format (NTSC or PAL).
3 Use the VITC Generate Lines menu to configure
the line pair, if necessary.
4 Select the appropriate clock reference.
5 Select either LTC or Bi-Phase/Tach from the
Positional Reference pop-up menu:
The SYNC peripheral regenerates VITC and in-
serts it onto the video signal (as soon as it re-
ceives a valid positional reference signal).
Internal VITC Generation
SYNC peripherals can also generate VITC inter-
nally, using the integral timecode generating
feature. In this mode (Positional Reference
switch = Generate) you can use either an exter-
nal clock reference, or the SYNC peripheral in-
ternal crystal as a clock reference with a variable
start time.
When generating VITC internally, if the inser-
tion is not timed based upon an upstream video
reference you may encounter repeated or
skipped VITC frames. Refer to “VITC Timing
Rule” on page 71 and “VITC Video Source Rule”
on page 52.
To generate VITC internally using Pro Tools:
1 Ensure that the SYNC peripheral is connected
in-line with a video source and video destina-
tion.
2 Ensure that VITC Insertion Enabled is selected
in the Synchronization page of the Peripherals
dialog.
3 If necessary, choose the line pair from the
VITC Generate Lines pop-up menu in the in the
Synchronization page of the Peripherals dialog.
4 In the SYNC Setup section of the Session Setup
window, select a valid clock reference and ensure
that you have selected the appropriate video for-
mat (NTSC or PAL, depending on your project).
For instructions, see “Video Format/System” on
page 64.
5 Put Pro Tools online.
6 Start Pro Tools recording or playback.
Pro Tools commands the SYNC peripheral to be-
gin generating VITC with time addresses syn-
chronized to the session time line.
To generate VITC internally using the front panel
controls:
1 Ensure that the SYNC peripheral is connected
in-line with a video source and video destina-
tion.
2 Press Set, and use the Up and Down switches to
display VITC Insertion (“VI7C In5”). For de-
tailed instructions, see “VITC Insertion” on
page 61.
3 Use the Down and Up switches to toggle VITC
Insertion On and Off.
4 When On is selected, press Set.
5 Press Set, and use the Up and Down switches to
display VITC Generate Lines (“6En LInE”).
6 Press Set. The default line pair is 14/16, which
is also the SMPTE-recommended setting.