Chapter
4
-
Operational
How-Tos
How
to
Use
Vertical
Interval
Time
Code
Vertical
Interval
Time
Code
(VITC)
is
typically
used
in
transmissions
that
require
time
code
from
the
originating
source
to
be
preserved.
It
was
originally
developed
for
analog
television
recording
systems,
but
has
new
standards
for
transmitting
in
digital
systems
(SMPTE-12M-1
/
SMPTE-12M-2).
Preserving
time
code
is
beneficial
for
future
editing
and
playback
of
captured
material.
EN-XX-series
devices
can
pass
VITC
ancillary
data
as
part
of
the
ANC
PID.
The
ANC
PID
is
a
separate
PES
located
in
the
transport
stream.
Additionally,
time
code
within
the
GOP
of
the
video
will
also
be
adjusted
at
encoder
start
up
to
match
the
incoming
ancillary
VITC.
VITC
data
packets
will
contain
a
DID
of
0x60
and
an
SDID
of
0x60.
The
VBI
tab
contains
an
SDI
ancillary
inspector
that
allows
users
to
view
ANC
data
present
at
the
input.
This
tab
can
be
viewed
for
verification
of
present
ancillary
data
at
the
SDI
input.
To
enable
VITC
passthrough:
Step Action
1
On
the
VBI
Tab
in
the
Web
GUI
Control
Application,
configure
the
"VBI
Source"
for
<SDI>.
2
On
the
PID
Tab
in
the
Web
GUI
Control
Application,
select
the
<On>
setting
for
"ANC
PID
Active".
Содержание EN-210
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