NVIDIA Corporation
20
Quadro FX 4800/5800 and Quadro CX SDI User’s Guide
– Version 1.0
C
HAPTER
3
Windows–Using the Graphics to SDI Control Panel
Synchronizing the SDI Output to an External Source
You
can
synchronize
the
SDI
output
with
other
equipment
in
a
broadcast
or
post
production
environment.
Supported Synchronization Methods
The
Graphics
to
SDI
page
provides
two
methods
for
synchronizing
the
SDI
output
to
a
common
sync
source—pixel
‐
accurate
or
frame
‐
accurate
synchronization.
•
Pixel
‐
accurate
synchronization
synchronizes
the
pixel
scanning
of
the
SDI
output
to
the
house
sync
signal.
When
using
pixel
‐
accurate
synchronization,
the
SDI
refresh
rate
is
determined
by
the
sync
signal.
•
Frame
‐
accurate
synchronization
synchronizes
the
frame
rate
of
the
SDI
output
to
the
house
sync
signal.
The
sync
signal
determines
the
available
SDI
signal
formats.
Supported Synchronization Signals
The
NVIDIA
driver
supports
the
following
external
synchronization
signal
types:
•
SDI
•
Composite
Bi
‐
level
(NTSC
or
PAL
sources
use
bi
‐
level
composite
signals.)
•
Composite
Tri
‐
level
(HDTV
sources
commonly
use
tri
‐
level
composite
signals.)
Connecting to an External Synchronization Source
To
use
an
external
sync
source:
1
Connect
the
sync
signal
to
the
INPUT
BNC
connector.
You
can
connect
multiple
systems
to
the
same
house
sync
by
daisy
‐
chaining
the
house
sync
cable
to
each
card
using
BNC
T
‐
connectors.
2
Follow
the
instructions
in
for
setting
up
your
SDI
system
to
use
the
external
sync
signal.
The
driver
will
not
detect
a
valid
sync
signal
until
the
correct
signal
type
is
configured
in
the
NVIDIA
Control
Panel.
