GS200 Ultrasonic Echoscope

The GS200 Ultrasonic Echoscope is an operational device for conducting ultrasonic experiments in reflection mode (pulse echo) or in through-transmission mode with ultrasonic probes 1 MHz, 2 MHz and 4 MHz. Featuring a built-in transmission and receiving unit, time gain control (TGC), integrated analogue-digital converter and microprocessor, the echoscope is easily connected to the measuring and evaluating computer via the USB interface. Secure connection of the ultrasonic probes is ensured via robust snap-in sockets with automatic probe recognition. Compensation for losses of intensity in ultrasonic sound pulses passing through solid or liquid bodies is by means of TGC with selectable threshold, start point, end point and TGC ramp. The most important function signals (trigger, TGC, A-scan signal (amplitude signal) and ultrasound signal) are available via BNC sockets on the front of the device.

Echogram Software

The Echoscope comes with measurement and evaluation software for the Windows operating system whereupon the screen displays the ultrasound signals (echogram) and the simultaneous TGC signal. The A-scan signal and ultrasound signal can be recorded individually or both simultaneously in the echogram as a function of time or penetration depth. A display of all currently set system parameters (operating mode, transmission level, gain, connected ultrasound probes) calculation of frequency and cepstrum of ultrasound signal (FFT), depiction of 2-dimensional ultrasonic images (B-image) and the time characteristic of time motion reflection layers (time-motion methods) is also clearly shown. Ultrasonic probes not included in scope of delivery.

Specifications

• Frequency range: 1 – 5MHz
• Transmission signal: Dirac pulse (<1µs, 0 – 300V)
• Transmission power: 0 – 30dB, in 5dB steps
• Gain: 0 - 35dB, in 5dB steps
• TGC: Continuously adjustable threshold value, start value, rise time and gain time, Maximum gain of approx. 32dB
• Outputs (front): TGC, trigger, ultrasound signal, A-scan signal via a BNC socket in each case
• Probes connectors: 2, selectable for transmit, receive or duplex modes
• PC connection: USB
• Scanning rate: 10, 25, 50 and 100MHz
• Power consumption: approx. 20VA
• Mains voltage: 100 – 240V, 50/60Hz
• Dimensions: approx. 226 x 169 x 325mm³

Experiment Topics

• Propagation of longitudinal and transverse ultrasonic waves in solid bodies
• 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

Required Equipment

• P1002584 Equipment Set "Ultrasound in Solids"
• P1018617 Ultrasonic Probe 1 MHz, GS200 (2x)