Ultrasonic Echoscope, USB
The Ultrasonic Echoscope is an instrumental tool in preparing students for a career in Medical Physics. Ultrasonic experiments can be conducted in reflection mode, according to the pulse-echo principle, or in through-transmission mode. Experiments involving the Ultrasonic Echoscope can be performed with 1 MHz, 2 MHz or 4MHz transducers.

Experiment topics:
• Propagation of longitudinal and transverse waves to investigate ultrasound in solids
• Determining velocity of longitudinal and transverse ultrasonic waves in solid bodies
• Determination of shear modulus, modulus of elasticity and Poisson number
• Attenuation of sound in solid bodies and liquids
• Frequency dependence of sound attenuation
• Time-dependent gain
• Frequency dependence of resolution
• Recording brightness images
• Recording ultrasonic echoes from moving boundaries (time-motion mode)
• Measurement of anomalies

Features:
• Built-in transmission and receiving unit
• Time Gain Control (TGC)
• Integrated analogue-digital converter and microprocessor
• USB computer interface
• Automatic frequency recognition of transducer

Software Specifications:
Includes measurement and evaluation software for Windows 32 bit operating systems, Windows 95/98/ME/NT/2000/XP supported. Screen display of the receiver signal (echogram) and the simultaneous TGC signal, whereby the AF and RF signals can be recorded individually or both simultaneously in the echogram as a function of time or penetration depth. Display of all currently set system parameters (transmission power, frequency, gain etc.), Fast Fourier Analysis, depiction of 2-dimensional ultrasonic images (B-image) and the time characteristic of time motion reflection layers (Time-Motion Methods). Ultrasonic transducer not included in scope of delivery.

Echoscope Specifications
Frequency range: 1 – 5 MHz
Transmission signal: Dirac pulse (< 1 µs, 10 V to 300 V)
Transmission power: 0–30 dB, in 10 dB steps
Gain: 0–35 dB, in 5 dB steps
TGC: Continuously adjustable threshold value, start value, rise time and gain time, Maximum gain of 30 dB
Connections: TGC signal, trigger, low-frequency signal, high-frequency signal via a BNC jack in each case
PC connection: USB
Scanning rate: 10 MHz per channel
Power consumption: approx. 20 VA
Mains voltage: 90 – 230 V, 50/60 Hz