The DFW Instruments DPST-9300A is a fully automated, flightline-approved RVSM (Reduced Vertical Separation Minimum) and AOA (Angle of Attack) 3-channel pitot-static test set. It is specifically designed for calibrating and testing aircraft air data systems by simulating pitot and static pressure conditions. The unit features automated control functionality, operating on a 115 V power supply with an input voltage range of 85 to 265 VAC at frequencies between 47 and 420 Hz. It measures and controls air data parameters critical for altitude, vertical speed, and airspeed sensors, supporting performance up to 55,000 feet altitude, 20,000 feet per minute vertical speed indication (VSI) rate, and 600 knots airspeed. Physically, it is compact and portable with dimensions approximately 19 inches wide and weighing between 15 to 17 pounds. The test set typically includes accessories such as three 20-foot hoses and a 6-foot power cord for operational convenience. It is built for durability and precision in avionics maintenance, enabling comprehensive verification and calibration of air data instruments under various flight conditions and is commonly used in avionics testing facilities for commercial and military aircraft maintenance.