Installation Overview
190-01499-02
GTX 3X5 Transponder TSO Installation Manual
Rev. 9
Page 3-16
Table 3-15 Barometric Pressure Setting Source Priority
NOTE
If the Air Data Select discrete input is configured and the source is EFIS/Air Data, Label 235 will have
priority over Label 234.
Table 3-16 MCP/FCU Selected Altitude Source Priority
Priority
Source
1
ARINC 429 label 235 from an EFIS/ADC
2
ARINC 429 label 234 from an EFIS/ADC
3
ARINC 429 label 235 from an AFCS
4
ARINC 429 label 234 from an AFCS
5
RS-232 from an ADC
6
RS-232 from a remote control panel
7
HSDB barometric pressure setting from a GX000
8
HSDB barometric pressure setting from GDU 620 #1
9
HSDB barometric pressure setting from GDU 620 #2
Priority
Source
1
ARINC 429 label 102 from an AFCS
2
ARINC 429 label 102 from an EFIS/ADC
3
RS-232 from a remote control panel
4
HSDB selected altitude from a GX000
5
HSDB selected altitude from GDU 620 #1
6
HSDB selected altitude from GDU 620 #2