Crystal Vision
The CoCo Controller panel
CoCo104 User Manual R2.0
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26/09/05
3 The CoCo Controller panel
The CoCo Controller panel is designed to control the CoCo104 10 bit digital colour
corrector using a RS422 serial link. The controller can handle up to 12 CoCo104s and has
dedicated shaft encoders for main adjustments such as video gain, chroma gain, black
level, RGB gain and gamma. There are also dedicated buttons for common menus and a
built-in display.
The CoCo Controller panel
3.1 Installing the Controller
The CoCo104 has a number of external control lines that can be configured for GPI or
RS485 control. These control lines MUST be configured for RS485 to enable Controller
communication as explained in section 5.2. It is NOT possible to retain GPI preset control
when the controller panel is enabled.
The panel communicates with Crystal Vision frames via a serial communication link
using the 422 Bus port at the rear of the panel. Standard UTP patch cables may be used
with an appropriate adapter for the Crystal Vision frame remote connector.
Controller panel – rear view
The RJ45 422 BUS port is next to the GPI I/O connector. Other RJ45 connectors and the
four-way DIP switch are NOT used.
Each card slot in a frame has its control lines brought out to different 26-way D-Type
frame remote connectors on the rear of the frame. The following tables show which
remote connectors to use for different frames and frame slots:
