... display modes: A-scope, bottom-lock expansion, marker zoom and unique bottom zoom displays5) Compound Temperature sensor optionFish Finder, Fishfinder, Echo ... basic ranges can be changed on the system menu.(4) Range ShiftUp to 300 meters (1000 feet, 150fathoms, 200 passi ... 2/5fathoms, 2/5passi/braza(7) Auto ModeAutomatic adjustment of range and gain(8) Display ModeHigh Frequency (200K),Low Frequency ( ...