Garmin MX20 Installation Manual - page 45

Installation 

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MX20 Installation Manual 

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 & 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.  

Note that the Antenna Receiver/Transmitter should be installed and calibrated in accordance to the 

manufacturer’s specifications. This manual does not cover the installation or calibration of the actual ART 

unit.  

WARNING 

Configuration procedures include steps that require the radar antenna to be powered on.  Please 

observe all safety precautions during these steps including: Do not perform in the vicinity of 

refueling operations; Do not perform while personnel are in the vicinity (approximately 20 feet) 

of the radar sweep area.