VT[5] Pin Outs
VTG Card VT3/Video Input (the HD15 connector closest to the audio connectors)
Pin 1 - Video 1 V - Comes from the "V" column of the SX84 video inputs
Pin 2 - Video 1 Y - Comes from the "Y" column of the SX84 video inputs
Pin 3 - Video 1 U - Comes from the "U" column of the SX84 video inputs
Pin 4,6,7,8,10,11 connected to ground
Pin 13 - Carries video 1 composite when used in stand alone mode using
the 5 BNC cable
Pin 14 - Carries genlock reference input (house sync) to VT
Pins 5,9,12,15 - No Connection

VTG Card VT4/Video Output (the HD15 connector at the bottom of the VT
card bracket)
Pin 1 - Main output V - Goes to the "V" column outputs on the SX84
Pin 2 - Main output Y - Goes to the "Y" column outputs on the SX84
Pin 3 - Main output U - Goes to the "U" column outputs of the SX84
Pin 13 - Main composite - Goes to the composite output column on the SX84
Pin 14 - Alpha/Preview composite - Carries composite video from the
alpha/preview video encoder
Pins 4,6,7,8,10,11 - connected to ground
Pins 5,9,12,15 - No Connection

--

Pigtail VT6/Audio (blue HD15 connector closest to audio connectors)
Pin 1 - Video 2 V - Comes from the "V" column of the SX84 video inputs
Pin 2 - Video 2 Y - Comes from the "Y" column of the SX84 video inputs
Pin 3 - Video 2 U - Comes from the "U" column of the SX84 video inputs
Pins 4,6,7,8,9,10 connected to ground
Pin 5 - Ch 4 Audio input
Pin 11 - Ch 3 audio input
Pin 12 - Ch 1 audio input
Pin 13 - Ch 2 audio output
Pin 14 - Ch 1 audio output
Pin 15 - Ch 2 audio input

Pigtail VT5/Control (black HD15 connector at bottom of pigtail bracket)
Pin 1 - Video 3 V - Comes from the "V" column of the SX84 video inputs
Pin 2 - Video 3 Y - Comes from the "Y" column of the SX84 video inputs
Pin 3 - Video 3 U - Comes from the "U" column of the SX84 video inputs
Pins 4,6,7,8,9,10 connected to ground
Pin 5 - No connection
Pin 11 - +10 volts DC Power
Pin 12 - Ch3 audio output
Pin 13 - I2C Data line
Pin 14 - I2C Clock line
Pin 15 - Ch4 audio out