Garmin GMA 245 Installation Manual page 19

2.3.2 Additional Equipment Required
• Cables: The installer will fabricate and supply all system cables. Interconnect wiring diagrams are
detailed in Appendix
• Hardware: #6-32 100° flat head screw (6 ea.) and #6-32 self-locking nut (6 ea.). Hardware
required to mount the GMA 245 installation rack is not provided.
• Stereo headphone jacks (up to 6), microphone jacks (up to 6), 3.5mm stereo jacks (up to 2).
Insulating type jacks or insulating washers should be used for all jacks to isolate them from aircraft
chassis.
• For GMA 245R, Hardware: (4-6 ea) #10-32 bolts and (4-6 ea) #10-32 self-locking nut for
installing the mounting bracket to the aircraft frame.
• For GMA 245, Tool: 3/32" Allen for tightening the unit into the rack and backplate.
• Push/Pull (that can be manually reset) circuit breaker (5 Amp recommended).
• Tie Wraps or Lacing Cord
• Ring Terminals (for grounding) #8 size, Yellow, Blue, and Pink.
• Silicon Fusion Tape (GPN 249-00114-00) to wrap the cable bundle. Silicone fusion tape is
available at most major suppliers like Mouser, Digi-key, and Home Depot.
• Solder Sleeves for terminating the shields of the cable to the GMA backshell. See
part numbers.
• Optional USB Type A Panel Mount/Bulkhead Jack to Type A USB male cable to use with
GMA 245R for connecting to a panel mounted USB jack. Example L-COM parts for reference-
UPMAA-1M (3.3 feet), UPMAA-075M (2.46 feet), UPMAA-05M (1.64 feet).
• Heat shrink tubing
• SD card needed for updating software in the GMA 245 when not integrated in a G3X Touch
system. Garmin recommends using a 4 GB Sandisk® SD card.
Insulating Washers for Headset and Microphone Jacks can be found at the following suppliers:
Switchcraft
S1029 – shoulder washer
S1028 – flat washer
Mouser
502-S-1029 – shoulder washer
502-S-1028 – flat washer
Digi-key
SC1147-ND shoulder washer
SC1146-ND flat washer
Newark
S1029 shoulder washer
S1028 flat washer
190-01879-11
Rev. 6
C.
Section 3.3
GMA 245/245R Installation Manual
for
Page 2-3