190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 1-5
1.5 Required non-Garmin Equipment
The following items may be required for system installation.
1.5.1 Wiring/Cabling Considerations
BNC/TNC Coaxial Connectors - May be required to terminate the antenna cable, depending upon which
antenna is used. Check the antenna installation instructions for detailed information. Example below:
• Connector, BNC/TNC Coaxial, male, crimp (MIL-PRF-39012)
CAN Bus Wire - See Section 2.3.1.3.2
Cable Ties - (MS3367) or lacing cord A-A-52080 (MIL-T-43435)
Cabling and Wiring: (all are provided by the installer unless otherwise noted)
• MIL-W-22759/16 (or other approved wire) AWG #22 or larger wire for all connections unless
otherwise specified. The supplied standard pin contacts are compatible with up to AWG #22 wire.
• Shielded wire (MIL-C-27500 cable utilizing M22759/34 wire (SD) and ETFE jacket or
MIL-C-27500 cable utilizing M22759/16 wire (TE) and ETFE jacket)
• HSDB (Ethernet) connections may use either aviation grade Category 5 Ethernet cable, or
MIL-C-27500 shielded twisted-pair cable.
• RG-400 or RG-142 coaxial cable with 50 Ω nominal impedance and meeting applicable aviation
regulations should be used for the installation.
Circuit Breakers - Circuit breakers (MS26574), replaceable fuses, or other circuit protection devices,
sized appropriately for the wire gauges used.
Clamps (Adel Clamp) - Various sizes for routing new wiring in the engine cowl (MS21919WDGXX).
Coaxial Cable, 50Ω - MIL-DTL-17 (i.e. RG-400)
Current Shunts - Qualified to AA55524
Environmental Splice - AS81824/1-X (where X=size) or equivalent
Fiberglass Sleeving - Qualified to MIL-I-3190/6
GTX™ Transponder No NA
SL30 Nav/Comm Transceiver No NA
SL40 Comm Transceiver No NA
Table 1-7 Optional Garmin LRUs
LRU
All Install Info Included
In This Manual?
Section
*One GDU 37X or one GDU 4XX are required
**One GSU 25 and/or GSU 73 is required
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