Garmin MX20 Installation Manual - page 54
Installation
44
560-1025-09 Rev E
MX20 Installation Manual
2.9.9.4.5 Radar On Mode Checkout
WARNING
When in ON mode, the radar antenna will be radiating.
If the MX20 radar function is not in standby mode, place it in standby mode by pressing the STBY line
item. Once in standby, press the ON line item (same key as STBY). The unit is now in “WX” mode.
Verify that the mode can be changed to MAP mode by pressing the MAP line item.
For all radar installations, press the Tilt "smart keys" and verify that the tilt can be changed from 15 DN to
15 UP.
For GWX 68 and ART 2000 installations, press the HORZ/VERT line item. The display should change to
a vertical scan.
For GWX 68 and ART 2000 installations, press the TILT/BRG line item to select the BRG on mode.
For GWX 68 and ART 2000 installations, press the Brg "smart keys" and verify that the bearing angle can
be changed from 45 L to 45 R.
For all radar installations, press the GAIN line item. A bar-gauge should appear in the bottom left of the
display. Verify that the gain can be adjusted from minimum to maximum by pressing the Gain "smart
keys." At minimum, the green bar in the gauge will not be present. At maximum, the green bar fills the
entire gauge.
2.9.9.5 Final Radar Checkout
Ensure all ground checkout procedures are completed and verified prior to "open air" checkout.
With stabilization on, during takeoff or prolonged aircraft maneuvers, the displayed radar returns may not
be accurate. Point the aircraft radar sensor across the airport and paint buildings and terrain.
2.9.10 Landmark TAWS8000 and KGP560 Checkout Procedure
2.9.10.1 KGP560 Configuration
The MX20 with I/O option and version 5.0 (or later) software is required in order to display terrain from
the KGP-560 EGPWS. External terrain caution and warning annunciator lamps are also required.
The figure below shows the connections between the MX20 display and the KGP560 EGPWS.
KGP560 EGPWS
30
10
62-pin D-Sub Connector
MX20 Display
42
21
ARINC 453/708 IN 1
A
B
17
18
ARINC 429 OUT 0
A
B
62
61
ARINC 429 IN 1
A
B
47
66
68
49
A
B
KCPB OUTPUT
A
B
RANGE IN
A
B
EGPWS ARINC 429 OUT
To interface with the MX20, the KGP560 must be configured as follows:
- Category 4: Terrain Display ID = 4
- Category 5: I/O Discrete ID = 1
- Category 9: Terrain Display Popup ID = 0