(1). Technical features:
· Scanning mode: 3.5MHz electronic scanning.
· Probe: 3.5MHz Convex Array Probe (R=60).
· Display mode: B, B/B, B/M, M
· Dead Zone≤5mm.
· Detecting depth: ≥160mm, Display Depth: 200mm.
· lateral Resolution: ≤3mm(for depth≤80mm).
≤4 (80mm＜depth≤130mm ).
· axial Resolution: ≤2mm(for depth≤80mm).
≤3 (80mm＜depth≤130mm ).
· Positioning transverse :≤15%.
· Positioning longitudinal:≤10%.
· Grey step: 256.
· Gains: step gains and total gain adjustment.
· Focus: 17 steps dynamic focusing and sound penetrating lens, 4 kinds of focus.
· Dynamic variable apertures.
· Memory capacity: 512×512×8bits.
· Measurement: 4 rulers for distance, area, circumference, heart rate depth and valve speed.
Obstetric checking software: for BPD; FL; CRL; GS; HC; AC; fetus weight, delivering date, pregnancy time.
· Patient information input: date and registration code display, full screen wording function.
· 8 frame co-relations and 8 Gamma calibrations for image processing.
· STC adjustment with digital step control for any points in the image, which enable the doctor to get ideal image.
· Image scales: ×1.0, ×1.2, ×1.5, ×2.0.
· Image reverse: Left and right, up and down image reverse.
· Image record: standard video output PAL.
· Display: 36cm Black-White CRT.
· Acoustic output parameters promulgate demand: See the adjoining page.
(2) . Configuration:
Main unit; 2.5/3.5/4.0/5.0MHz convex probe; 10 inch VGA monitor; double probe ports.
Options: 6.5/7.0MHz trans-vaginal probe; 7.5/8.0MHz linear probe; cine loop；trolley; thermal printer.
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