Page iv GTX 327 Installation ManualRev J 190-00187-02PARAGRAPH PAGE3.3 CONFIGURATION PAGES ..............................................................................................................233.3.1 DISPLAY MODE Page ...........................................................................................................243.3.2 DISPLAY BACKLIGHT Page................................................................................................243.3.3 KEY LIGHTING Page ............................................................................................................253.3.4 CONTRAST CONFIGURATION Page ..................................................................................273.3.5 RS-232 INPUT/OUTPUT Page ...............................................................................................283.3.6 OPERATION CONFIGURATION Pages...............................................................................293.3.7 AIRCRAFT TYPE Page ..........................................................................................................313.3.8 RS-232 INPUT VIEW Page ....................................................................................................313.3.9 GRAY CODE INPUT Page.....................................................................................................313.3.10 EXTERNAL SWITCH Page ...................................................................................................323.3.11 ANALOG INPUT Page ...........................................................................................................32APPENDIX A. CERTIFICATION DOCUMENTS....................................................................................33A.1 CONTINUED AIRWORTHINESS ....................................................................................................33A.2 ENVIRONMENTAL QUALIFICATION FORM ..............................................................................36APPENDIX B. ASSEMBLY AND INSTALLATION DRAWINGS ........................................................39APPENDIX C. STC PERMISSION............................................................................................................51