Jopana Technologies’ CV-4416/APN-194(V) Signal Data
Converter (SDC) provides an inexpensive, yet reliable, method
to digitize the altitude output of the AN/APN-194(V) Radar
Altimeter Set for availability on a MIL-STD-1553B bus. The
SDC passively monitors the APN-194 analog output signal to
the cockpit Height Indicator, converting the voltage to an
appropriate digital value and providing the value to the Mission
Computer as a 1553 Remote Terminal (RT). The SDC also
monitors and converts the APN-194’s Altitude Rate signal, and
when used in conjunction with RT-1015A version of the APN-
194, it can provide the digital serial Altitude value to the 1553
interface.