Cirrus Perspective™ by Garmin – Pilot’s Guide for the SR20/SR22/SR22T 190-00820-08 Rev. A160FLIGHT MANAGEMENTSYSTEMOVERVIEWFLIGHTINSTRUMENTSEISAUDIO PANEL& CNSFLIGHTMANAGEMENTHAZARDAVOIDANCEAFCSADDITIONALFEATURESAPPENDICESINDEXMAP RANGEThere are 28 different map ranges available, from 500 feet to 2000 nm. The current range is indicated inthe lower right corner of the map and represents the top-to-bottom distance covered by the map. When themap range is decreased to a point that exceeds the capability of Perspective to accurately represent the map,a magnifying glass icon is shown to the left of the map range. To change the map range turn the Joystickcounter-clockwise to decrease the range, or clockwise to increase the range.Figure 5-6 Map RangeRange OverzoomAUTO ZOOMAuto zoom allows Perspective to change the map display range to the smallest range clearly showing theactive waypoint. Auto zoom can be overridden by adjusting the range with the Joystick, and remains untilthe active waypoint changes, a terrain or traffic alert occurs, the aircraft takes off, or the manual override timesout (timer set on Map Setup Window).If a terrain caution or warning occurs, any map page displaying TAWS/TERRAIN data automatically adjuststo the smallest map range clearly showing the highest priority alert. If a new traffic advisory alert occurs, anymap page capable of displaying traffic advisory alerts automatically adjusts to the smallest map range clearlyshowing the traffic advisory. When terrain or traffic alerts clear, the map returns to the previous auto zoomrange based on the active waypoint.The auto zoom function can be turned on or off independently for the PFDs and MFD. Control of theranges at which the auto zoom occurs is done by setting the minimum and maximum ‘look forward’ times(set on the Map Setup Window for the Map Group). These settings determines the minimum and maximumdistance to display based upon the aircraft’s ground speed.• Waypoints that are long distances apart cause the map range to increase to a point where many details onthe map are decluttered. If this is not acceptable, lower the maximum look ahead time to a value that limitsthe auto zoom to an acceptable range.• Waypoints that are very short distances apart cause the map range to decrease to a point where situationalawareness may not be what is desired. Increase the minimum look ahead time to a value that limits the autozoom to a minimum range that provides acceptable situational awareness.• Flight plans that have a combination of long and short legs cause the range to increase and decrease aswaypoints sequence. To avoid this, auto zoom can be disabled or the maximum/minimum times can beadjusted.
