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M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 38
Theory of Operation: Overview
4 Theory of Operation
Overview
This section provides a technical overview of system functions. The discussion focuses on the
main functions and features of the system’s PC, circuit boards, and power distribution. Main
system functions are also shown in the functional block diagrams at the end of this section.
The M2540A’s internal PC replaces the back-end electronics used in earlier ultrasound systems
to handle display processing. The beam processor/acoustic processor (BPAP) board handles the
acoustic and beam processing front-end functions.
This section covers the following areas of the system:
• “Internal PC” on page 39
• “TR Boards” on page 40
• “BPAP Board” on page 42
• “Demodulator Board” on page 43
• “APIO Board” on page 43
• “Physio Module Option” on page 43
• “System Motherboard” on page 44
• “Distribution Board and Connector Modules” on page 44
• “I/O Panel” on page 45
• “System Control Panel” on page 45
• “Power Supply” on page 46
• “Functional Block Diagrams” on page 47
• “Transducer Safety Testing: Test Setup and Theory” on page 52