The TSA90-2WL-2 is a Transmitter Sensor Assembly manufactured by Raytheon. This assembly provides altitude, attitude, and heading data and is a component of the company's navigation and navigation control system. It is designed to meet the requirements of civil aircraft applications and to provide versatility for use in a variety of aircraft. It is also certified for use in both commercial and military aircraft. The TSA90-2WL-2 includes two antennas, a digital processor, a power supply, and a controller. The antennas provide Interrogator, Transponder, or Disparity signal outputs providing the system with precise attitude and altitude data. The digital signal processor further expands the system by providing improved accuracy, speed and signal rejection. The power supply and the associated controllers provide regulated power with signal inputs for the interrogator, transponder and disparity signals.