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Control Panel Description
Model 4000-3
Communication between the frame and the Control Panel is over a single cable
containing five sets of serial lines as follows:
■
M/E 1 data link (serial port) transfers data to and from M/E 1 communications
processor in the signal frame. The Control Panel Mix Effect processor module
reads and writes data to the 38K baud asynchronous RS-422 port. The Control
Panel M/E processor communicates the status of all switches, knobs and lever
arms within its M/E group to the Mix Effect Processor in the Signal Processor
Frame.
■
M/E 2 data link performs exactly the same functions as M/E 1 but for M/E 2.
■
M/E 3 data link performs exactly the same functions as M/E 1 but for M/E 3.
■
F/F Mix data link is a serial port that transfers Flip/Flop mix/DSK data to and
from the frame via a peripheral processor on the Controller module. The
Control Panel CPU module reads and writes data to this synchronous 1.2M
baud RS-422 port. The Control Panel CPU reads the status of the upper and
lower PuP modules to transfer switch, knob, lever arm status, flat panel
display and 3.5" disk data to a peripheral processor.
■
Status Terminal port is a serial RS-422 port that transfers data between the
frame and a VT-100-compatible status terminal. The terminal data lines are
looped through an internal switch on the CPU module located in the Upper
Panel tub, and on to the Signal Processor frame.
Processing of operator controls, other than the Mix Effects group, on the Control
Panel is handled by two Peripheral Utility Processors (PuPs). One PuP monitors
the upper Control Panel area and another monitors the lower panel.
The flat panel display is driven by a graphics controller/driver circuit on the
Control Panel CPU module. Both text and bitmap graphic data are directed by the
CPU to the controller for the actual work of pixel addressing, refresh and
manipulation. A PuP is not used with the flat panel, the controller communicates
directly with the CPU.
Another device that communicates directly with the CPU, is the 3.5" floppy disk
controller circuit. Parallel data words are sent to and from the drive controller,
which formats the data and handles all read/write drive control operations (head
stepping, track/sector seek, etcetera).
Summary of Contents for Grass Valley 4000
Page 3: ...iii Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 4: ...iv Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 34: ...1 20 Section 1 System Overview ...
Page 138: ...2 104 Section 2 Installation ...
Page 196: ...3 58 Section 3 Functional Description ...
Page 286: ...Index 6 Index ...