GNS 400W Series Installation Manual Page 4-11190-00356-08 Rev. G4.5.2 Annunciators/Switches Electrical Characteristics4.5.2.1 AnnunciatorsPin Name Connector Pin I/OVLOC ANNUNCIATE P4001 1 OutGPS ANNUNCIATE P4001 2 OutWAYPOINT ANNUNCIATE P4001 3 OutTERMINAL ANNUNCIATE P4001 4 OutAPPROACH ANNUNCIATE P4001 5 OutMESSAGE ANNUNCIATE P4001 6 OutOBS ANNUNCIATE P4001 7 OutSPARE ANNUNCIATE P4001 8 OutINTEGRITY ANNUNCIATE P4001 9 OutGPS SELECT [1] P4001 13 OutILS/GPS APPROACH P4001 14 Out[1] The Operation of the GPS SELECT can be configured. Refer to Section 5.3.3.All outputs sink up to 250 mA when activated.4.5.2.2 Switch InputsPin Name Connector Pin I/OOBS MODE SELECT P4001 71 InCDI SOURCE SELECT P4001 73 InCOM REMOTE RECALL P4001 74 InDEMO MODE SELECT P4001 75 InAIR/GROUND P4001 70 InThese inputs are considered active if either the voltage to ground is < 1.9 V or the resistance to ground is< 375 . These inputs are considered inactive if the voltage to ground is 11-33 VDC.4.5.2.3 TIME MARK OUTPin Name Connector Pin I/OTIME MARK OUT P4001 16 OutTIME MARK OUT outputs a 1 ms ± 1 s wide pulse once every 1.0 s ± 2 ms. TIME MARK OUT is alogic level output, capable of sourcing 1 mA at greater than 3.8 V and sinking 1 mA at less than 0.4 V.4.5.3 Annunciators/Switches ConfigurationRefer to Section 5.3.3 for configuration of the GPS SELECT output and AIR/GROUND input.4.5.4 Annunciators/Switches Calibration and CheckoutRefer to Section 5.3.9 for the annunciators/switches checkout.4.5.5 Annunciators/Switches InterconnectRefer to Appendix H for annunciators/switches interconnect information.
