Honeywell has a heritage of pressure measurement devices. The BALT Assembly contains three independent, temperature-compensated pressure transducers to measure pressure external to the vehicle. The BALT is powered by 28VDC. The BALT outputs analog voltage proportional to pressure that is digitized by the PDU ADIO and used by the VMC for altitude measurement during descent for parachute deployment.
*Barometric Altimeter (BALT) Assembly