Garmin GPSMAP 4210 Owner's Manual page 47

Xtalk Reject (Crosstalk)—filters out interference caused by another radar operating in close
proximity.
Advanced—opens a menu of advanced settings:
• FTC (fast time constant)— controls unwanted screen clutter caused by rain at a distance. Set to
High, Medium, Low, or Off.
• Front of Boat—sets the offset of the front of the boat if you mount the radar at an angle.
Antenna Size (GMR 404/406 only)—selects the size of your antenna. Select
•
6 foot
a GMR 404; select
Motor Speed (GMR 404/406 only)—sets the motor speed of your GMR 404/406 radar to
•
Medium Speed or High Speed.
which increases the speed at which the screen updates.
GPSMAP 4000 Series Owner's Manual
if you have a GMR 406.
High Speed increases the speed at which the antenna rotates,
u r
SInG adar
4 Foot
if you have
4