ii
3.3 Installation of Whole Device ................................................................................................. 3-4
3.3.1 Connecting Power Cable .............................................................................................. 3-4
3.3.2 Connecting ECG ........................................................................................................... 3-4
3.3.3 Connecting a Ultrasound Probe ................................................................................... 3-4
3.4 Installing Peripherals ............................................................................................................ 3-4
3.4.1 Connecting the Footswitch ........................................................................................... 3-4
3.4.2 Connecting/ Removing a USB Memory Device ............................................................ 3-5
3.4.3 Graph /Text printer ........................................................................................................ 3-5
3.4.4 Video Printer ................................................................................................................. 3-7
3.4.5 Installing Barcode Reader ............................................................................................ 3-7
3.5 System Configuration ........................................................................................................... 3-8
3.5.1 Power-on Running ........................................................................................................ 3-8
3.5.2 Enter Doppler ................................................................................................................ 3-9
3.5.3 System Preset ............................................................................................................ 3-10
3.5.4 Peripheral Preset ........................................................................................................ 3-11
3.5.5 Network Preset ........................................................................................................... 3-12
3.5.6 DICOM Preset ............................................................................................................ 3-13
3.5.7 System Information Verification .................................................................................. 3-15
4 Product Principle ...................................................................................................... 4-1
4.1 General Structure of Hardware System ............................................................................... 4-1
4.2 Principle of Boards ............................................................................................................... 4-2
4.2.1 Power System ............................................................................................................... 4-2
4.2.2 Principle of the Main Board ........................................................................................ 4-15
4.2.3 Principle of Transmitting Board ................................................................................... 4-37
4.2.4 4D Driving Board ........................................................................................................ 4-42
4.2.5 Principle of Keyboard Board ....................................................................................... 4-46
4.2.6 Display Unit ................................................................................................................. 4-54
4.2.7 Principle of ECG Board .............................................................................................. 4-58
4.2.8 Principle of Video/Audio Capture Card ....................................................................... 4-61
4.2.9 Principle of the CW Board .......................................................................................... 4-62
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