Philips M1351A User Manual

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System Overview
Chapter 6    Theory of Operation    
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6
Theory of Operation
System Overview
The boards and their interconnections are shown in the following figure.
The CPU board, which has overall control of the entire system, contains flash EPROMs 
containing all the system software. The software for the Combined Interface Board (if one is 
fitted) is loaded from this ROM area.The signals from the transducers receive some analog 
conditioning on the Front End Board and are then digitized on the CPU Board. The CPU 
Board includes a digital signal processor. The results of the processing are distributed to the 
outputs (for example, the Recorder, “traffic lights” and Combined Interface Board).