Garmin MX20 Installation Manual - page 46
Installation
MX20 Installation Manual
39
NOTE
See FAA AC20-68B “Recommended Radiation Safety Precautions For Airborne Weather Radar”
for safety precautions to be taken by personnel when operating airborne weather radar on the
ground.
2.9.9.1 ART 2000 Configuration and Calibration
2.9.9.1.1 Configuring the MX20
First configure the MX20 for the ART2000 option. Do this in the normal way by entering the install key
sequence (1, 4, 6) on the menu keys after boot-up is complete. Enable “RADAR” under the “FUNC” menu-
set, then select the “DATA” menu-set and select the “ART2000” choice. Note that the MX20 is compatible
with the ART2100 when the ART2100 is programmed to emulate the ART2000. Only ART2000 functions
will be available.
To configure the “Radar Indicator” push the “MISC” smart key and press “NEXT PAGE” line key twice.
Press the line key next to “RADAR INDICATOR” until the desired selection is shown. The choices are 1, 2
or All. This number corresponds to the port number on the ART that is connected to the MX20. After
selection, wait 30 seconds then turn the power off and on again.
2.9.9.1.2 Calibration Procedures
Refer to the Bendix/King ART2000 Color Weather Radar System Installation Manual, Revision 4 or later.
Follow the instructions in "Stabilization calibration with Radar Indicator" or its equivalent.
Skip the description in the ART2000 manual on how to enter calibration mode. The MX20 allows a single
button push to enter calibration mode. The MX20 MUST be in Install mode to calibrate the radar head.
Follow the instructions below.
1. Turn the MX20 on.
2. After boot-up is complete, key-in the install sequence 1, 4, 6, on the menu keys.
3. Press the FN key until one of the options is RADAR. If the RADAR option is not available, see the
section on "Configuring Radar".
4. Press the "smart key" corresponding to the RADAR option. You will now switch to the Radar page.
5. Press the STBY key to put the radar unit into standby mode. This may take up to twenty seconds.
6. Once the MX2O is in standby mode, one of the menu options will be "Test". Press the TEST key.
7. Once the MX20 is in Test mode, press the ENTER key to switch to the "Setup" page.
8. On the "Setup" page, press the key labeled CALB to enter calibration mode. This will take a couple
of seconds.
9. The MX20 will flash all faults briefly to indicate calibration mode has been entered. If this fails, turn
power off and try again.
At this point, follow directions in the ART2000 Installation Manual starting with "400 Hz Ref Gain" section.
Selection of calibration parameters is done by adjusting the gain setting according to the values in the
ART2000 Installation Manual. On the MX20, the "smart keys" labeled "Gain" are used to adjust the gain
setting and select the parameter to be calibrated. Follow the ART2000 Installation Manual instructions for
calibrating the selected parameters.
2.9.9.2 RS-181A Configuration and Calibration
2.9.9.2.1 RS-181A Configuration
First configure the MX20 for the RS181 option. Do this in the normal way by entering the install key
sequence (1, 4, 6) on the menu keys after boot-up is complete. Enable “RADAR” under the “FUNC” menu-