Garmin AERA 660 Pilot's Manual page 127

MOTION VECTORS
There are two pilot-selectable and mutually exclusive types of motion vectors, Absolute
and TargetTrend, which are differentiated by color and function. Absolute vectors are
white and indicate ground track as reported by the traffic. TargetTrend vectors are green
and indicate the flight path and position, relative to the aircraft, at which the traffic will be
after the passing of one of four predetermined time intervals. The end of the TargetTrend
vector indicates the traffic's predicted location relative to the predicted location at the
end of the look-ahead time. For example, if traffic is ahead of the aircraft and traveling
along the same track but at a slower rate. The motion vector would point opposite of its
indicated direction of flight showing that the aircraft is overtaking the traffic.
Traffic's Predicted
Relative Location
in 5 minutes
The TargetTrend look-ahead time interval is automatically adjusted from 30 seconds to
five minutes and corresponds to the traffic display range setting. The greater the range
setting, the longer the time interval and vise versa. Refer to the table below for more
details.
Traffic Page Range Ring Settings
.5nm to 2nm
2nm to 6nm
6nm to 12nm
12nm to 40nm
190-02017-20 Rev. A
TargetTrend
TargetTrend Look-ahead
TargetTrend Look-ahead
Garmin aera 660 Pilot's Guide
Hazard Avoidance
Traffic Display
Range
TargetTrend
Look-ahead
Time
30 seconds
60 seconds
2 minutes
5 minutes
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