400W Series Installation Manual Page 5-13190-00356-02 Rev. G5.3.9 MAIN DISCRETE INPUTS PageSelect the MAIN DISCRETE INPUTS Page (see Figure5-12) if the encoding altimeter input is used. Verify thatthe DECODED ALTITUDE field indicates the correctaltitude.GRAY CODEIf the encoding altimeter input is used, verify that theDECODED ALTITUDE field indicates the correctaltitude.EXTERNAL SWITCH STATEThis allows you to verify the operation of any external switches that are present in the installation.Selection Verify That:RMT OBS The box is filled in while a remote OBS switch is pressed.RMT CDI The box is filled in while a remote CDI source select switch is pressed.RMT RCL [1] The box is filled in while the COM remote recall switch is pressed.[1] Main software version 3.00 or later5.3.10 MAIN DISCRETE OUTPUTS PageSelect the MAIN DISCRETE OUTPUTS Page (seeFigure 5-13). This page allows you to verify theoperation of any external annunciators and switches thatare present in the installation.DISCRETE TOGGLESelection Verify That:APR The APR annunciator is active and inactive as selected on this page.GPS The GPS source select annunciator is active and inactive as selectedon this page.INTEG The INTEG annunciator is active and inactive as selected on thispage.MSG The MSG annunciator is active and inactive as selected on this page.OBS The OBS annunciator is active and inactive as selected on this page.TERM The TERM annunciator is active and inactive as selected on this page.VLOC The VLOC source select annunciator is active and inactive as selectedon this page.WPT The WPT annunciator is active and inactive as selected on this page.ILS/GPS APR The ILS/GPS APPROACH output is active and inactive as selected onthis page (NOTE: This output is connected to the autopilot ILSENGAGE input, not to an annunciation, and therefore this is for benchtesting purposes only).GPS SELECT The GPS SELECT output is active and inactive as selected on thispage (NOTE: This output is connected to the autopilot GPS SELECTinput, not to an annunciation, and therefore this is for bench testingpurposes only).Figure 5-12. MAIN DISCRETE INPUTS PageFigure 5-13. MAIN DISCRETE OUTPUTS Page
