The DCU Interface Box performs the adaptation of some helicopter signals into ARINC429 format to make them compatible with the input capabilities of the DCU. In addition, the DCU performs an
interface function to allow the signal from the EWS to be compatible with the WTG.
A serial interface RS232 is for calibrating parameters (torque, fuel flow zero point and fuel quantity data) via an external laptop as ground equipment only.
Software is developed according to DO-178B DAL C.