
G1000 System Maintenance Manual – Diamond DA40/40F Page 2-5
190-00545-01 Revision G
2.2.12 GDL 59 Datalink (Optional)
The GDL 59 provides the interface to an optional GSR 56 satellite datalink, which adds airborne low
speed data link and voice communication capability. The GDL 59 unit interfaces to the Garmin
Integrated Flight Deck via the GDL69A using HSDB. The GDL 59 is located below the baggage
compartment and power is received from the Avionics bus.
2.2.13 GSR 56 Satellite Transciever (Optional)
The GSR 56 provides airborne low speed data link and voice communication capability to Garmin
Integrated Flight Deck installations. The GSR 56 contains a transceiver that operates on the Iridium
Satellite network. The GSR 56 interfaces directly to the GDL 59 via an RS-232 interface for the
GDL 59 / GSR 56 combination option. The Standalone GSR 56 option interfaces directly to GIA #2 via
an RS-232 interface. The GSR 56 is located below the baggage compartment and power is received from
the Avionics bus.
2.3 G1000 Optional Interfaces
Installation of all other optional equipment that interfaces to the G1000, including ADF, DME, and
GDL 69A is documented by Diamond OAM factory drawings.
2.3.1 KAP 140 AFCS
The Phase 7 amendment to STC SA01444WI-D adds two new installation configurations to the MDL
(See Table 1-1), both of which allow for G1000 systems with GDU 8.20 and greater to interface with
existing DA40 aircraft equipped with the Honeywell KAP 140 AFCS.
The G1000 interfaces to the KAP 140 by providing the following from the #2 GIA 63:
-Output of Lateral & Vertical Navigation Signals
-Output of Course Datum
-Output of Heading Datum
-Output of Encoded Altitude
-ILS Energize Discrete
-GPS Select Discrete
Additionally, the G1000 receives the following from the KAP 140:
-Pitch Trim Fail Discrete Input
-Pitch Trim Fail Aural Input
The G1000 – KAP 140 interface was included as part of the original G1000 certification under STC
SA01254WI. In order to be compatible with WAAS, GDU software changes were made as part of
System Software Version 0321.17 or later, which were certified as a follow-on amendment to STC
SA01444WI-D.
2.3.2 Synthetic Vision System
The Synthetic Vision System (SVS) provides the crew with a greater awareness of the aircraft’s position
relative to surrounding terrain, obstacles, and traffic (optional). SVS is an embedded software feature of
the G1000 and is controlled by using PFD softkeys. Specific details on operating the SVS feature can be
found in the Synthetic Vision & Pathways AFMS specified in Table 1-4.
SVS enhances situational awareness by displaying a three dimensional depiction of terrain, obstacles, and
traffic in the PFD primary field of view such that their proximity to the aircraft is more easily understood
during instrument scanning. The display of SVS can be turned on and off by the pilot by a dedicated
softkey on the PFD.
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