DALT55 INSTRUCTION SUPPLEMENT61-101-02184_02186-B Page 8/14Jan /10 /20135.2 Start-up Procedurea. Press ON/OFF switch to turn on instrument.b. When initialization finishes, the Aeronautical display appears andshows the altitude and vertical speed.5.3 Main MenuSeveral menus allow user to access the various functions of the instrument.Primary functions of the tester are available by scrolling (using arrow keys)to the desired selection. Selecting EXIT returns the user to the previouslydisplayed screen. (Refer to Chart 1, Main Menu)a. From the Aeronautical display, open the main menu by pressingMENU key (located at bottom of display). Press the SEL key toaccept selection.* accessible only in two-instrument configuration.CHART 1 MAIN MENUb. Main menu options include: Units, Display, EPR Test, Maintenance,and Exit.1) UNITSThe DALT55 may be changed and configured to display severalunits of measurement.After selecting AERONAUTICAL, press CHANGE (locatedbottom left corner on display). Use the arrow keys to select ft &ft/min or m & m/min (metric) as desired. Press SAVE to store.After selecting PRESSURE, press CHANGE. Use the arrowkeys to select inHg abs, mbar abs or psia units settings. PressSAVE to store.MAINTENANCE MENULevel 1Level 2 (password protected)UNITS DISPLAY EPR TEST * MAINTENANCEAERONAUTICALPRESSUREMENUEXITAERONAUTICALPRESSURE