Garmin MX20 Installation Manual - page 49
Installation
42
MX20 Installation Manual
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
The remainder of the KGP560 configuration items is installation-specific and consequently not specified.
NOTE
The MX20 will automatically range to 10 nmi if a terrain pop-up occurs.
NOTE
With Terrain Display ID 4 the peaks data will be embedded in the terrain sweep. A
future version of the MX20 will support Terrain Display ID 6 and display peaks data
outside the terrain sweep area.
2.9.10.2 Goodrich Landmark TAWS and Honeywell KGP560 TAWS Checkout
If a Goodrich Landmark TAWS 8000 or Honeywell KGP560 TAWS system has been connected to the
MX20 I/O, the interface should be verified under the TER (Terrain) function on the MX20.
1. Turn power on to the MX20 I/O and the TAWS system. After the MX20 I/O tests have completed, enter
the Terrain Function by pressing the FN key until the TER menu option is available and press the
corresponding terrain smart key.
2. If the TER function is not available, verify that the MX20 is an I/O model and that the terrain function
has been enabled as described in previous sections.
3. After the TAWS has completed its self-tests, verify that an amber TAWS data-fail annunciator is not
present on the left side of the screen. Other annunciators may be present.
4. From the TAWS 8000 control panel, execute a self-test. The MX20 display should present the
TAWS8000 generated test pattern and annunciators. If the annunciators do not appear, check the wiring.
Make sure the 429 input wires are not reversed.
5. After the self-test has completed, verify that the MX20 range up and range down keys change the
corresponding range being presented by the TAWS.