Garmin GWX 70 Installation Manual - Page 48
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4.4 Configuration 4.4.1 Configuration Module Table 4-8. Configuration Module Pin Name CONFIG MODULE POWER CONFIG MODULE GROUND CONFIG MODULE DATA CONFIG MODULE CLOCK Connector P751 P751 P751 P751 Pin I/O 24 Out 43 -- 61 I/O 60 Out 4.5 Configuration 4.5.1 Antenna Select Pin Name ANTENNA SELECT* 0 ANTENNA SELECT* 1 Table 4-9. Antenna Select Connector Pin I/O P751 55 In P751 54 In These inputs configure the system for the antenna size attached to the GWX 70 R/T unit. Refer to Table 4-10 for antenna select logic. NOTE The antenna select inputs should be left unconnected (floating high) in GX000 installations. Table 4-10. Antenna Select Logic Pin 54 ANTENNA SELECT* 1 High High Low Low Pin 55 ANTENNA SELECT* 0 High Low High Low Antenna Size Antenna size set by software configuration 10" Antenna 12" Antenna 18" Antenna GWX 70 Installation Manual Page 4-8 190-00829-01 Rev. C
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