DigiDesign SYNC HD Manual page 60

To regenerate VITC based on an external
positional reference using the SYNC Setup
software utility (Windows only):
Ensure that the SYNC peripheral is connected
1
in-line with a video source and video destina-
tion.
Ensure that VITC Insertion Enabled is selected
2
and that you have selected the appropriate
video format (NTSC or PAL).
Use the VITC Generate Lines menu to configure
3
the line pair, if necessary.
Select the appropriate clock reference.
4
Select either LTC or Bi-Phase/Tach from the
5
SYNC Setup 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 time code 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.
54 SYNC HD Guide
To generate VITC internally using Pro Tools:
Ensure that the SYNC peripheral is connected
1
in-line with a video source and video destina-
tion.
Ensure that VITC Insertion Enabled is selected in
2
the Synchronization page of the Peripherals dia-
log.
If necessary, choose the line pair from the VITC
3
Generate Lines pop-up menu in the in the Syn-
chronization page of the Peripherals dialog.
In the SYNC Setup section of the Session Setup
4
window, select a valid clock reference and en-
sure that you have selected the appropriate
video format (NTSC or PAL, depending on your
project). For instructions, see "Video For-
mat/System" on page 64.
Put Pro Tools online.
5
Start Pro Tools recording or playback.
6
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:
Ensure that the SYNC peripheral is connected
1
in-line with a video source and video destina-
tion.
Press Set, and use the Up and Down switches
2
to display VITC Insertion ("VI7C In5"). For de-
tailed instructions, see "VITC Insertion" on
page 61.
Use the Down and Up switches to toggle VITC
3
Insertion On and Off.
When On is selected, press Set.
4
Press Set, and use the Up and Down switches
5
to display VITC Generate Lines ("6En LInE").
Press Set. The default line pair is 14/16, which
6
is also the SMPTE-recommended setting.