Garmin GTN 650 Pilot's Guide - Page 255

14.1 Vertical Calculator (VCALC) Foreword The Vertical Calculator (VCALC) function allows you to create a three- Getting dimensional profile which guides you from your present position and altitude to Started a final (target) altitude at a specified location. This is helpful when you'd like to Xpdr Ctrl descend to a certain altitude near an airport. Once the profile is defined, message alerts and additional data can be configured on the Default NAV and Map Pages Com/Nav to keep you informed of your progress. FPL Cruise Altitude Direct-To Target Altitude Figure 14-3 VCALC Target VCALC is inhibited in the following conditions: • Groundspeed is less than 35 knots • No active flight plan or direct-to destination • SUSP mode • Vectors-to-Final mode • VLOC mode • After the FAF on an approach Target Waypoint Proc Target Offset (Before) Wpt Info Map Traffic Terrain Weather Nearest WARNING: Do not use VCALC messages as the only means of either avoiding terrain/obstacles or following ATC guidance. VCALC provides advisory Music information only and must be used in concert with all other available navigation data sources. Utilities System Messages Symbols Appendix Index 190-01004-03 Rev. B Garmin GTN 625/635/650 Pilot's Guide 14-3