Garmin MX20 Installation Manual - page 44
Installation
MX20 Installation Manual
37
2. Turn on the power to each avionics system. Observe for proper operation of the MX20 and the other
avionics systems.
____ Transponder (if equipped)
____ NAV/VOR/ILS unit and tune to a local frequency (VOR/DME)
____ Any other navigation source
____ Radio Altimeter
____ DME
____ ADF
____ VHF Comm Transceiver
____ Encoding Altimeter
____ Flight Director
____ Marker Beacon Receiver
____ Weather Radar
____ Ground Proximity Warning System or Enhanced Ground Proximity Warning System
(EGPWS)
____ Autopilot
____ Directional Gyro/HSI
____ RMI
____ TIS-A Sensor
____ GDL 69/69A Data Link Sensor
____ WSI InFlight Weather Sensor
____ TAWS Sensor
____ Traffic Sensor
2.9.4 Altitude Test
1. Perform the installation and calibration tests in accordance with the altitude source manufacturer’s
installation manual.
2. Perform a flight check against the aircraft altimeter. Verify readings at ground level and at three
additional altitude points.
3. The altitude will be displayed on the bottom right-hand corner of the MFD terrain page.
2.9.5 Compass Test
If the MX20 is located within seven inches of any compass, the compass will require a compass calibration.
2.9.6 Stormscope Interface Test
If a Goodrich WX-500 Stormscope® sensor has been connected to the MX20, the interface should be
verified in the LT function on the MX20. Four standard Stormscope test screens are available to support
system checkout. Refer to the WX-500 Stormscope Installation Manual, P/N 009-11500-001. These test
screens are System Data, Self-Test, Noise Monitor, and Strike Test.
2.9.7 SkyWatch Interface Test
If a Goodrich SKY497 or SKY899 SkyWatch® sensor has been connected to the MX20 I/O, the
interface should be verified under the TRAF function on the MX20.
1. Turn power on to the MX20 I/O and SkyWatch Unit. After the MX20 I/O self-tests have completed,
enter the Traffic Function by pressing the FN key until the TRAF menu option is available and press
the corresponding traffic smart key.