
G1000 System Maintenance Manual – Diamond DA40/40F Page 5-27
190-00545-01 Revision G
5.6 Backup Communications Path Checks
5.6.1 Overview
The G1000 system architecture is designed with redundant communication ports for several LRUs so that
critical information can continue to be displayed in the event of an equipment or wiring failure. Of most
importance is flight attitude, heading, and air data information. The GRS 77 and GDC 74A each have
four separate ARINC 429 data lines which are all capable of sending data to the displays. The GEA 71,
GTX 33, and GMA 1347 each have two redundant serial communication paths for the same purpose. See
Figure 2-7 for a basic G1000 block diagram depicting this architecture. Several other diagrams are shown
later in this section for illustrative purposes. When doing troubleshooting always use the Diamond wiring
diagrams for reference (Refer to Table 1-2 for wiring diagram drawing numbers).
NOTE
Refer to Section 5.6.2 and 8.2.4 for procedures on checking the status of each configured
G1000 / GFC 700 backup data path.
GMA Backup Path Description:
The GMA 1347 utilizes two backup paths to preserve communications with the G1000. The primary data
path is from the GMA1 through GIA1 to the PFD. The secondary backup path is through GIA2 into the
MFD. Audio panel data is cross-filled to the appropriate display over the HSDB.
ETHERNET
ETHERNET
ETHERNET
ETHERNET
RS-232
Primary Data Path
Secondary Data Path
GMA 1347
GMA 1347
GDU 1040
PFD
No. 1
GIA 63
GDU 1040
MFD
GDU 1040
PFD
GDU 1040
MFD
No. 2
GIA 63
RS-232
Figure 5-9. GMA 1347 Data Paths
Komentarze do niniejszej Instrukcji