GFC 600 AFCS Part 23 AML STC Maintenance Manual Page 7
190-01938-00 Revision 13
2.1.6 Garmin Air Data Module (ADM)
The ADM (if installed) provides pitot and static pressure input to the GMC 605 via connection to
the existing aircraft pitot and static systems. The ADM contains an internal configuration
module, and when installed replaces the GMC 605 configuration module. The ADM uses the
same I2C interface to the GMC 605 that the configuration module would use with the exception
that the ADM wiring harness includes an additional wire for unit power.
In some installations, the ADM is utilized as a cabin pressure sensor. In this case, an approved
air data source is required, and the ADM is not connected to the existing pitot and static
systems.
2.1.7 GTA 82 Trim Adapter
The Garmin GTA 82 Trim Adapter is a remote mounted device that is used to allow the GFC
600 to drive a trim actuator provided by the airframe manufacturer. In these cases, the GTA 82
provides the required interface.
2.2 GFC 600 Interfaces
The GFC 600 AFCS is capable of interfacing with many different external units. Refer to the
installation-specific information in the aircraft records to determine which interfaces are
applicable.
2.3 Power Requirements
Table 2-1 below summarizes the power requirements for the GFC 600 LRUs.
Table 2-1 – Power Requirements
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