Garmin GDL 69/69A Installation Manual

Also see for GDL 69: Pilot's guide addendum Pilot's guide addendum Activation Instructions Pilot's guide Activation Instructions

Contents

Garmin GDL 69/69A Installation Manual Manual pdf 39 page image

System InterconnectsGDL 69/69A Installation Manual Page 3-3190-00355-02 Revision E3.2 Functional DescriptionsAll connections to the GDL 69/69A are provided on the sub-miniature DB-78 connector labeled P691.The antenna cable connection is provided on a TNC coaxial connector.3.2.1 PowerThe GDL 69/69A will accept input power from 9 to 33 VDC. The two aircraft power inputs (AircraftPower 1, Aircraft Power 2) are intended to allow power to be provided by two different power busses.Typically, both power input pins are connected on a single bus through a single circuit breaker. If poweris obtained from two different power busses, each leg should have its own circuit breaker.P691-35 Aircraft Power 1 +P691-37 Aircraft Power 2 +P691-20 Power GroundP691-78 Power GroundRefer to Appendix D for recommended power connections.3.2.2 Configuration ModuleThe GDL 69/69A stores installation-specific configuration information in an aircraft configurationmodule located in the DB-78’s backshell. This eliminates the need to set up aircraft specificconfiguration items again if a new GDL 69/69A is installed. Since configuration module input pinscontain no lightning protection, the configuration module must be mounted within the connectorbackshell as described in Section 2.5.3.P691-1 Configuration Module GroundP691-21 Configuration Module Power (from GDL 69/69A)P691-40 Configuration Module Data (bi-directional)P691-60 Configuration Module Clock (from GDL 69/69A)Refer to Appendix D for interconnect information.The configuration module is not used when installed with GDU 104x series units. The configurationmodule does not store XM Satellite Radio subscription information. When a new GDL 69/69A isinstalled in the aircraft, contact XM Satellite Radio to update the radio IDs on the current subscription orstart a new subscription.3.2.3 RS-232 Ports (Qty 3)Three RS-232 ports are available. Ports 2 and 3 can be used to connect the GDL 69/69A tocontrol/display devices (e.g., the MX20). Port 1 is reserved for factory use only.P691-2 Port 2 TX (out)P691-3 Port 3 TX (out)P691-4 Signal GroundP691-5 Port 2 RX (in)P691-6 Port 3 RX (in)P691-7 Port 1 RX (in) (RESERVED FOR FACTORY USE)P691-8 Port 1 TX (out) (RESERVED FOR FACTORY USE)P691-11 Signal GroundNOTEIn order for a serial port to function correctly, the baud rate of the RX andTX channels on a given RS232 port must be the same. This must beconsidered when assigning serial ports to interfacing equipment.