Gammex 403 GS LE, User Manual

Page: 11 / 26

11
Target Specifications
Cystic Targets
Diameters..............................................................................2, 4, 6, and 10 mm
Placement......................................................................3, 7, 8, and 14 cm deep
Speed of sound...............................................................................1540±10 m/s
Attenuation coefficient......................................................0.05±0.01 dB/cm/MHz
Grey Scale Targets
Diameter...................................................................................................10 mm
Placement............................................................................................6 cm deep
Speed of sound...............................................................................1540±10 m/s
Temperature dependence on speed of sound.....................................1.5 m/s/ºC
Contrast................................. -6 dB, +6 dB, high scatter relative to background
Pin Targets
Diameter.................................................................................................0.1 mm
Vertical spacing...............................................................2 cm at 2–16 cm deep
Horizontal spacing.....................................................3 cm at 2 and 12 cm deep
Resolution Target Group
...........................................................................at 3, 8, and 14 cm deep
All acoustic measurements made at 4.5 MHz, 22ºC.
Due to our philosophy of continuous quality improvement,
all specifications are subject to change.