3B Scientific Ultrasonic Echoscope User Manual
Page 7
17
4.7. Time dependent amplification
The plate used in 4.6 can also be used to demonstrate
the time-dependent amplification method that is of-
ten employed, particularly in medicinal applications.
The rise time, threshold and start point of the ampli-
fier can all be adjusted so that the individual echoes
all appear to be of equal magnitude. The time-depend-
ent amplifier thus compensates for the attenuation in
the material. Variations in width and point of action
can emphasize areas at different depths or even filter
certain depths out. An example is shown in the follow-
ing diagram.
The damping visible in the display above is just about
eliminated with the time-dependent amplification set-
tings used in the display below.
See also other documents in the category 3B Scientific Health and hygiene:
- Piezoelectric Charge Source (2 pages)
- Animal cell model (36 pages)
- Internal organs Chart (16 pages)
- Digital Input Box (12 pages)
- Digital Input Box (2 pages)
- Experiment Set - On the Trail of Flavour Enhancers Brand new and topical-versatile in classroom situations (48 pages)
- Pascal’s Pressure Sphere (6 pages)
- Pascal’s Pressure Sphere (1 page)
- Heat Equivalent Apparatus (6 pages)
- Heat Equivalent Apparatus (24 pages)
- 3B Deluxe Portable Massage Table - Blue (2 pages)
- Radiation of Heat__Thermopile (12 pages)
- Radiation of Heat__Thermopile (2 pages)
- Capillary Tubes Apparatus (2 pages)
- Basic Experiment Board (230 V, 50__60 Hz) (24 pages)
- Model of female breast (30 pages)
- Digital Teslameter with Probe (230 V, 50__60 Hz) (4 pages)
- Brain with Arteries on Base of Head, 8 part (20 pages)
- Functional Physiological Skeleton Model - Frank - Hanging Stand (1 page)
- Physiological Skeleton Model - Phil - Hanging Stand (20 pages)
- Teltron Optical Equivalent to Debye-Scherrer Interference (2 pages)
- Teltron Luminescence Tube D (4 pages)
- Teltron Triode D, Helium-filled (4 pages)
- Human Blood Circulation Chart (16 pages)
- Power Function Generator (230 V, 50__60 Hz) (4 pages)
- Power Function Generator (115 V, 50__60 Hz) (24 pages)
- Laser Diode for Debye-Sears Effect, Red (5 pages)
- Lung Model with larynx, 7 part (16 pages)
- The Human Skeleton Chart, front (16 pages)
- Solar Energy Basic Kit (2 pages)
- Solar Energy Basic Kit (12 pages)
- 1002996 (2 pages)
- 1000731 (1 page)
- Basic Mechanics Kit (2 pages)
- Teltron Dual Beam Tube S (6 pages)
- Resusci Anne CPR Torso (73 pages)
- Leclanche Cell (2 pages)
- Human Pulse Sensor Box (24 pages)
- Human Pulse Sensor Box (4 pages)
- Advanced Thermodynamics Kit (3 pages)
- 1008528 (1 page)
- Life size Muscle Torso, 27 part (60 pages)
- Launcher S (12 pages)
- Launcher S (2 pages)
- Torso Chart (16 pages)