190-01879-11
GMA 245/245R Installation Manual
Rev. 6
Page A-1
APPENDIX:A INSTALLATION CONSIDERATIONS FOR UPGRADING
FROM A GARMIN GMA 240
NOTE
This appendix contains installation considerations for upgrading from a Garmin GMA 240. This is
not a set of comprehensive installation instructions for installing a Garmin GMA 245 in place of a
Garmin GMA 240. Read this manual in its entirety before starting any installation.
A.1 Mechanical Considerations
•
The GMA 240 installation rack is compatible with the GMA 245. Refer to
of this
manual for a list of installation materials.
•
The GMA 240 connectors are compatible and may be reused.
If replacing a GMA 240 with a GMA 245, the GMA 240 (330-00220-25) connector backshells can be
reused. However, grounding the wire shields to the GMA will be easier with the Garmin backshells in
GPN 011-02302-00. The Garmin backshells also offer higher immunity to HIRF. Current installations will
not be required to change the backshell type, but would benefit from doing so.
A.2 Electrical Considerations
shows the GMA 240 pins that may need to be modified to accommodate the GMA 245. Refer
to
and
of this manual for a list of pin functions and interconnect examples.