150 | Appendix B - Engineering mode
Antenna Reset Tools
Special tools are available in the MX51x CDU that can be used to reset the GPS and
Beacon engines in the smart antenna. Use them only in extreme cases when the GPS or
beacon receiver fails or takes too long to lock-on. The “MX Ant Reset” softkey will clear
the satellite almanac memory of the GPS engine and reset all settings of the antenna to
factory default conditions. The “CSI Reset” softkey resets the differential beacon board.
Antenna Reset Procedure:
This procedure will work only under Engineering level mode.
Press the
1 AUX key several times to bring up the AUX7 screen
Press the
2 EDIT key
Press the ‘#1’ or ‘NAV’ button 3 times (to bring-up Eng’g level 3)
3
Press the EDIT key 2 times4
Highlight the 5 “MX Ant Reset” softkey then press ENT to reset the GPS engine (or
the “CSI Reset” softkey to reset the beacon engine)
Press the
6 EDIT key to exit
Press the
7 GPS key to display the GPS or DGPS Status screen
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