Garmin G3X - 13.3 Equipment Available; 13.4 Unit Installation

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 13-2
13.3 Equipment Available
13.4 Unit Installation
The following guidelines describe proper mechanical installation of the Garmin GMU 11 Magnetometer.
The guidelines include requirements for proper location selection in the aircraft, requirements for
supporting structure and mechanical alignment and restriction on nearby equipment.
Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices are
required for installation of the GMU 11. Refer to Section 2.3
for wiring considerations and to Section 23.8
for pinouts.
The GMU 11 is an extremely sensitive three-axis magnetic sensor. It is more sensitive to nearby magnetic
disturbances than a flux gate magnetometer. For this reason, when choosing a mounting location for the
GMU 11, see the distances from objects or devices that can disturb the magnetic field in Table 13-4
which
specifies recommended distances from magnetic disturbances for GMU 11 location.
NOTE
If the requirements listed in Table 13-4 cannot be met, a magnetometer interference test
must be performed to make sure of proper operation of the G3X™ avionics system. Refer
to the AHRS/Magnetometer Installation Considerations document (190-01051-00)
available from the Garmin website (www.garmin.com
).
Table 13-1 GMU 11 Part Numbers
Model
Assembly Part
Number
Unit Only Part
Number
Installation Rack
GMU 11 010-01788-00 011-04349-00 No
Table 13-2 GMU 11 Accessories
Item Garmin P/N Quantity
GMU 11, Installation Kit 011-04349-90 1
Table 13-3 Contents of GMU 11 Installation Kit (011-04349-90)
Item Garmin P/N Quantity
Connector Kit, 9 Pin, w/CAN Term 011-03002-00 1
Nut, Hex, Nyl Locking, 316SS/P, 6-32 210-10008-08 4
Screw, 6-32x.500, PHP, SS/P 211-60207-12 4
Washer, Flat, SAE, SS, #6 212-00024-06 4