SDI
Selection
RX: Accepts all 429 inputs
Common
TX: Generates all 429 outputs with SDI = 0.
Number 1 (Pilot) long-range navigator
LNAV 1
RX: Accepts 429 inputs with SDI = 0 or 1.
TX: Generates all 429 outputs with SDI = 1.
Number 2 (Copilot) long-range navigator
LNAV 2
RX: Accepts 429 inputs with SDI = 0 or 2.
TX: Generates all 429 outputs with SDI = 2.
Page 6-6
Rev. C
Description
GTN 625/635/650 TSO Installation Manual
190-01004-02