S6 Portable Digital Color Doppler Ultrasound System
Service Manual
Chapter 4
Principle of the S6 System
4.1 Introduction
This chapter provides the functional explanations of the electronics of the
S6 system.
4.2 System Block Diagram
Figure 4.1: Block Diagram of the S6 System
The DBTR board has the following functionalities: Control the timing and
band width of the emitted ultrasound; Amplify the variable gain of the
echoes; Adjust the electronic focus position, TGC, dynamic filtering, loga-
rithmic compression, demodulation and other signal processing functions.
The echo signals are transmitted to the computer and the DBF board. The
DBF board serves for extracting the Doppler signals from the echo sig-
nals, and sends the output signals to the computer system. After processed
P/N: 4720-0034-01A
4-1
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