Transmit and Receive Switch Module: SONAR & NDT.

BII T/R switch module provides an integrated solution for a wide range of acoustic applications based on Emitting and Listening Timing Techniques. The device works at active mode (Transmitting Sounds) and passive mode (Listening Sounds) in a half-duplex acoustic system. It integrates an Impedance Matching Network (except BII2100 series), a T/R switch, a bandpass filter, and a low noise DPGA preamplifier (Digitally Programmable Gain Amplifier) or an AGC Amplifier into one compact housing. Gain-selection is accomplished by a two-bit or one-bit digital word (TTL/CMOS level compatible). BII T/R Switches feature low noise level and large dynamic range suitable to detect large signals from short distance and the highly attenuated signals from long distance.

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BII5000 Power Amplifier: Sonar, HIFU & Ultrasonics	BII6000 Impedance Matching for Transducers
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Acoustic Transducers and Measurement Systems: Installation/Mounting, Ordering, Wiring, Array & Aperture Design and much more.

T/R Switch Module	Frequency Range	Receiving Gain Range	Gain Control	Built-in Impedance Matching
BII2100 Series	10Hz to 10MHz.	20, 40, 60, 80dB.	Digital, TTL/CMOS.	No
BII2160 Series	100Hz to 1MHz.	-20 to 80 dB.	None, AGC.	Yes
BII2170 Series	10Hz to 10MHz.	20, 40, 60, 80dB.	Digital, TTL/CMOS.	Yes

T/R Switch Module in SONAR and Ultrasonic System

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