Garmin Flight Deck 100 用户手册

190-00728-04  Rev. A

177

Auto zoom allows the system to change the map display range to the smallest range clearly showing the 

active waypoint.  Auto zoom can be overridden by adjusting the range with the Joystick, and remains until 
the active waypoint changes, a terrain or traffic alert occurs, the aircraft takes off, or the manual override times 
out (timer set on Map Setup Window).

If a terrain caution or warning occurs, any map page displaying terrain data automatically adjusts to the 

smallest map range clearly showing the highest priority alert.  If a new traffic advisory alert occurs, any map 
page capable of displaying traffic advisory alerts automatically adjusts to the smallest map range clearly 
showing the traffic advisory.  When terrain or traffic alerts clear, the map returns to the previous auto zoom 
range based on the active waypoint.

The auto zoom function can be turned on or off independently for the PFDs and MFD. Control of the 

ranges 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 determine the minimum and maximum 
distance 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 on

the map are decluttered. If this is not acceptable, lower the maximum look ahead time to a value that limits 
the auto zoom to an acceptable range.

• Waypoints that are very short distances apart cause the map range to decrease to a point where situational

awareness may not be what is desired. Increase the minimum look ahead time to a value that limits the auto 
zoom 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 as

waypoints sequence. To avoid this, auto zoom can be disabled or the maximum/minimum times can be
adjusted.

• The ‘time out’ time (configurable on the Map Setup Page for the Map Group) determines how long auto

zoom is overridden by a manual adjustment of the range knob.  At the expiration of this time, the auto 
zoom range is restored. Setting the ‘time out’ value to zero causes the manual override to never time out.

• When the maximum ‘look forward’ time is set to zero, the upper limit becomes the maximum range available

(2000 nm).

• When the minimum ‘look forward’ time is set to zero, the lower limit becomes 1.5 nm.