2-1 
Chapter 2   Hardware Introduction 
2.1. Hardware System 
The hardware system consists of the transducer unit, tranmission unit, amplification unit, 
beam forming unit, B/M signal processing unit, DSC unit, CPU system, I/O unit and power 
supply unit. 
The hardware system is shown as the figure below. 
 
2.2. Boards 
2.2.1. Main  Board 
The diagram of the main board is shown as follows.