A pressure-neutral acoustic transmit receive module (PR-TRM) with integrated data processing for deep sea applications

Hardware, i.e. electronics and sensors, have to be packaged in a special way to bear the heavy mechanical loads, which are encountered in deep sea applications. Expensive materials and pressure resistant housings are often used. Another way to fulfill the requirements is to use a pressure neutral (pressure tolerant) approach by casting the components into an appropriate material. This might be a hard elastomer to protect components like quartz oscillators which have gas filled voids against being crushed or a synthetic rubber that is used to enclose electronic boards to disperse the pressure over the complete surface (components and circuit board).