Garmin MX20 Installation Manual - page 47
Installation
MX20 Installation Manual
560-1025-09 Rev E
37
2.9.6 Stormscope Interface Test
NOTE
GPS unit must have a valid signal and active flight plan in order for Stormscope data to be
displayed.
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
NOTE
GPS unit must have a valid signal and active flight plan in order for traffic data to be
displayed.
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.
2. If the TRAF function is not available, verify that the MX20 is an I/O model and that the traffic
function has been enabled as described in previous sections.
3. From the traffic function, verify in the lower right corner of the screen that status of the SkyWatch
unit. The unit should be either in the TAS Standby mode or no status should be presented. If a
Data Timeout error is presented, re-check the wiring.
4. From any function, verify that no amber SKYW annunciator is present in the upper left corner of
the display. If this is present, re-check the wiring.
5. From the traffic function, or from the SKY1000 display if connected, command a SkyWatch Self
Test. The status presented in the lower left of the display should change to a white ‘TAS Test’ and
clear after several moments.
6. From the Message function, verify that no error messages have been posted from the SkyWatch
system.
2.9.8 Ryan TCAD Interface Test
If a Ryan TCAD 9900B or 9900BX 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 TCAD 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.
2. If the TRAF function is not available, verify that the MX20 is an I/O model and that the traffic
function has been enabled as described in previous sections.
3. Ensure that power is applied to the TCAD unit.
4. From the traffic function, verify that no amber TCAD Annunciator is present.
5. Perform additional checkout procedures in accordance to the TCAD installation manual.
2.9.9 RADAR Configuration, Calibration & Checkout Procedures
The following steps are performed to verify the interface between the RADAR sensor and the MX20 I/O.
The radome should NOT be installed during these tests as visual verification of antenna movement is
required.