Specifications
Connecting external devices 21
Connecting external
devices to the
encoder’s output
Matrox Orion’s encoder can output NTSC/PAL and RGB video,
through the expanded video I/O connector, and composite video
in NTSC/PAL through the TV output connector. To connect
devices to the expanded video I/O connector, use the optional
DBHD44-TO-13BNC cable, connecting the wires as described
below:
To connect to the TV output connector, use a standard video
cable (available from your local electronics store). Note that
devices connected to the TV output connector are connected to
the BLUE_COMP_OUT line without a multiplexer. This means
that the signal can be received from both the TV output and
expanded video I/O connectors simultaneously; however,
connecting to both will result in poor video quality. The signal
path for these connectors is illustrated in the block diagram at
the beginning of Chapter 1.
Attaching a video input
Connecting external
devices to the
expanded video I/O
connector
You can attach video sources to Matrox Orion’s expanded video
I/O connector using the optional DBHD44-TO-13BNC. This
cable has thirteen BNC connectors, and a DB-44 plug. The
DBHD44-TO-13BNC cable supports eight video input signals,
3 video output signals (described in the above table), and 2
trigger signals. The wires of this cable are color-coded and
numbered as follows:
Wires Signals Expected output
White (5) RED_C_OUT Encoded Video Output
(C or red).
Yellow (6) GREEN_Y_OUT Encoded Video Output
(Y or green).
Purple (7)
BLUE_COMP_OUT Encoded Video Output
(CVBS or blue).
Wires on 13BNC Cable Signals Expected Input
RED (1) VID_IN1 Analog Video Input1 or Y1
GREEN (2) VID_IN2 Analog Video Input2 or C1
BLUE (3) VID_IN3 Analog Video Input3 or Y2
BLACK (4) VID_IN4 Analog Video Input4 or C2