Genesys GDR- COM Series, Руководство по установке, Страница: 50 / 62

GDR-XXXX NAV/COM INSTALLATION MANUAL
64-000109 Page 50 of 62
APPENDIX A – ARINC 429 SPECIFICATIONS
The ARINC bus may contain concentrated commands for multiple sets of equipment. The
LRU masks labels that it is not configured to receive. In addition to the label, the LRU uses
the SDI bits to differentiate messages, e.g., up to three VHF COM receivers may be placed on
the same bus and the target COM is determined by the strapped SDI bits as noted below. If a
label is received by the unit, it is also retransmitted. Some labels are only transmitted from the
LRU, which contain status or data.
Multiple bus inputs are handled in the order received with the last bus input determining the
outcome, i.e., there is no priority bus. RS-232 and ARINC commands are handled together in
this manner. ARINC shall be implement to allow bust mode turning, i.e., there is not a
requirement for the normal label transmission rate on the input.