ii
3.4.2Connecting/Removing a USB Memory Device............................................................. 3-8
3.4.3Graph/Text Printer......................................................................................................... 3-8
3.4.4Video Printer ............................................................................................................... 3-10
3.4.5Barcode Reader.......................................................................................................... 3-11
3.5Wired Network Connection ................................................................................................ 3-14
3.6System Configuration......................................................................................................... 3-14
3.6.1Power-on Running...................................................................................................... 3-14
3.6.2Enter Doppler.............................................................................................................. 3-14
3.6.3System Preset ............................................................................................................ 3-15
3.6.4Print Preset ................................................................................................................. 3-16
3.6.5Network Preset ........................................................................................................... 3-17
3.6.6Network Configure...................................................................................................... 3-18
3.6.7DICOM/HL7 Preset..................................................................................................... 3-20
3.6.8System Information Verification .................................................................................. 3-21
4Product Principle........................................................................................................ 4-1
4.1General Structure of Main Unit’s Hardware System ............................................................ 4-1
4.2Main Board ........................................................................................................................... 4-2
4.2.1Power Supply................................................................................................................ 4-3
4.2.2Backend........................................................................................................................ 4-3
4.2.3Front-end of Main Board............................................................................................... 4-5
4.3TR64 Board .......................................................................................................................... 4-6
4.4Probe Board ......................................................................................................................... 4-6
4.5PHV Power Supply Board .................................................................................................... 4-7
4.6ECG Unit .............................................................................................................................. 4-7
4.7Control Panel........................................................................................................................ 4-9
4.8Main Display Unit ............................................................................................................... 4-10
4.9Probe Extension Board ...................................................................................................... 4-11
4.10Audio/Video Transfer Module............................................................................................. 4-12
4.11USB HUB Board................................................................................................................. 4-13
4.12Trolley Power Supply ......................................................................................................... 4-13
4.12.1Connection Board of Trolley Power Supply................................................................ 4-14
4.12.2AC_DC Power Supply ................................................................................................ 4-14
4.12.3Management Board of Trolley Battery ........................................................................ 4-14
4.13System Power-on Control .................................................................................................. 4-15
4.14Internal Connection Diagram of Main Unit and Trolley ...................................................... 4-17
4.15Details in Main Unit’s Power-on ......................................................................................... 4-17
5Checking Performance and Functions..................................................................... 5-1
5.1Description ........................................................................................................................... 5-1
5.2Checking System Status ...................................................................................................... 5-1
5.2.1Running Status ............................................................................................................. 5-1
5.2.2Working Condition ........................................................................................................ 5-1
5.3General Check ..................................................................................................................... 5-2
5.3.1Check Flow ................................................................................................................... 5-2
5.3.2Check Content .............................................................................................................. 5-2
5.4Functions Checking.............................................................................................................. 5-5
5.4.1Checking Flow .............................................................................................................. 5-5
5.4.2Checking Content ......................................................................................................... 5-5
5.5Performance Test ............................................................................................................... 5-12
5.5.1Test Procedures.......................................................................................................... 5-12
5.5.2Test Content................................................................................................................ 5-12