ii   
3.4.2  Connecting/Removing a USB Memory Device ............................................................. 3-8 
3.4.3  Graph/Text Printer......................................................................................................... 3-9 
3.4.4  Video Printer ............................................................................................................... 3-11 
3.4.5  Barcode Reader .......................................................................................................... 3-12 
3.5  Wired Network Connection ................................................................................................ 3-17 
3.6  System Configuration ......................................................................................................... 3-17 
3.6.1  Power-on Running ...................................................................................................... 3-17 
3.6.2  Enter Doppler .............................................................................................................. 3-17 
3.6.3  System Preset ............................................................................................................ 3-18 
3.6.4  Print Preset ................................................................................................................. 3-19 
3.6.5  Network Preset ........................................................................................................... 3-20 
3.6.6  Network Configure ...................................................................................................... 3-24 
3.6.7  DICOM/HL7 Preset ..................................................................................................... 3-30 
3.6.8  Security ....................................................................................................................... 3-32 
3.6.9  System Information Verification .................................................................................. 3-35 
4  Product Principle ........................................................................................................ 4-1 
4.1  General Structure of Main Unit’s Hardware System ............................................................ 4-1 
4.2  Main Board ........................................................................................................................... 4-2 
4.2.1  Power Supply ................................................................................................................ 4-3 
4.2.2  Backend ........................................................................................................................ 4-3 
4.2.3  Front-end of Main Board ............................................................................................... 4-5 
4.3  TR64 Board .......................................................................................................................... 4-6 
4.4  Probe Board ......................................................................................................................... 4-6 
4.5  PHV Power Supply Board .................................................................................................... 4-7 
4.6  ECG Unit .............................................................................................................................. 4-7 
4.7  Control Panel ........................................................................................................................ 4-9 
4.8  Main Display Unit ............................................................................................................... 4-10 
4.9  Probe Extension Board ...................................................................................................... 4-11 
4.10  Audio/Video Transfer Module ............................................................................................. 4-12 
4.11  USB HUB Board ................................................................................................................. 4-13 
4.12  Trolley Power Supply ......................................................................................................... 4-13 
4.12.1  Connection Board of Trolley Power Supply ................................................................ 4-14 
4.12.2  AC_DC Power Supply ................................................................................................ 4-14 
4.12.3  Management Board of Trolley Battery ........................................................................ 4-14 
4.13  System Power-on Control .................................................................................................. 4-15 
4.14  Internal Connection Diagram of Main Unit and Trolley ...................................................... 4-17 
4.15  Details in Main Unit’s Power-on ......................................................................................... 4-17 
5  Checking Performance and Functions ..................................................................... 5-1 
5.1  Description ........................................................................................................................... 5-1 
5.2  Checking System Status ...................................................................................................... 5-1 
5.2.1  Running Status ............................................................................................................. 5-1 
5.2.2  Working Condition ........................................................................................................ 5-1 
5.3  General Check ..................................................................................................................... 5-2 
5.3.1  Check Flow ................................................................................................................... 5-2 
5.3.2  Check Content .............................................................................................................. 5-2 
5.4  Functions Checking .............................................................................................................. 5-5 
5.4.1  Checking Flow .............................................................................................................. 5-5 
5.4.2  Checking Content ......................................................................................................... 5-5 
5.5  Performance Test ............................................................................................................... 5-11 
5.5.1  Test Procedures .......................................................................................................... 5-11