Works up to 2500' agl. Radar altimeter 1 is powered from DC Bus 1, and radar altimeter 2 (if installed) is powered from DC Bus 2. PFD 1 displays system 1 altitude, PFD 2 displays system 2 altitude (if installed), otherwise system 1.
The system interfaces with the TCAS and MAU. Indirectly from the MAU information is supplied to the DVDR, EGPWS, and PFDs.
RALT 1/2 FAIL
Categories: Embraer 170/190 | Flight Instruments/Comm/Nav/FMS
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