Image Processing: 1. 2D images; 2. The functions of frame correlation, 8 kinds of Y adjustments, edge enhancement held, as well as the functions of pretreatment, post processing, left-right reversing and up-down reversing; 3. Image displaying ratio: Magnification which can be increased, local zooming functions held; 4. Digital beam forming; 5. Histogram; 6. THI frequency. Software Functions: 1. General measurement: distance, circumference, area,oval, trace, volume, HP,gestational week; 2. Obstetric measurement soft:GS,CRL,BPD,AC,HC,FL,AFI,EDD and calculating fetus weight, pregnancy week,expected delivery date, fetal physiological rating according to the previous measurement. Technical Specifications: Display: 15 inches high-resolution LCD Scanning Mode: Electronic convex array, Electronic linear array Display Mode: B, B+B, B+M, M Magnification: X0.8,X1.0,X1.2,X1.3,X1.5,X1.6,X1.8,X2.0 Gray Scales: 256 shades Y adgustment: A,B,C,D,E,F,G,H Resolution: Horizontal less than 2mm, Vertical less than 1mm Geometrical Precision: less than 5% Blind Area: less than 3mm TGC: 8 section TGC adjustment Pseudo Colors: Yes Display Depth: 240mm and depth could be increased Image Polarity: Left/right, Positive/negative and up/down Cineloop: Successive 256 frames Output Lnterface: Three output interface 1 VGA and 2 PAL video signal output Power Supply Range: AC 110V 60Hz, 220V 50Hz Net Weight: 6.5Kg Size: 280mmX240mmX210mm Configuration: Standard: Main unit 3.5 MHz Convex probe(2.5/5.0Mhz) 256 frame cineloop Two probe connectors Two USB ports Optional: 6.5MHz transvaginal probe (5.0/7.5Mhz) 7.5MHz high-freq linear probe (6.5/8.5Mhz) Video Printer Trolley