Furuno CSH-53 manual Menu Description

Menu	Item	Description
TARGET LOCK	Fish Spd Update	Selects update interval of fish speed readout.
		You can select from 5 seconds, 10 seconds,
		20 seconds, or 30 seconds.
	Target LK Window	Selects size of target lock window (in pixels);
		64 x 64 (normal), 96 x 96 (large), or 128 x
		128 (largest).
BRG READOUT	Course	Selects unit of readout for course and bearing
		between fish marks; 32 compass bearing or
		360° true bearing.
	Current Data	Display current data readout in 32 compass
		bearing, 360° true bearing, 180° relative
		bearing, or 360° relative bearing.
	Event Mark	Display event mark readout in 32 compass
		bearing, 360° true bearing, 180° relative
		bearing, or 360° relative bearing.
	Other Marks	Display location of trackball mark and bearing
		marker in 32 compass bearing, 360° true
		bearing, 180° relative bearing, or 360° relative
		bearing.
DATA DISPLAY	Control Setting	Keep OFF for normal operation. "Sonar" and
		"TGT Lock" options are for factory use only.
	Text Window Data	Choose (external sensor) data to display at
		screen bottom. "1" provides all available data.
		Other options provide less data in larger
		characters.
MARK SIZE 1	Trackball Mark	Select size and shape of trackball mark; +
		mark, or rectangle, available in large or small
		size.
	Target Lock Mark	You can select the size of these marks for
	Event Mark 1	large or small.
	Event Mark 2
	Fish Mark
	Own Ship Mark
MARK SIZE 2	Own Ship Mark	Select the size of these marks for large or
	Net Shoot Mark	small.
	Estimate Mark
	Current Vector	Select the length of the current vector for long
		or short.
	Range Rings	Select interval (times range in use) of range
		rings; 1/4R or 1/2R.
	Ship's Track MK	Choose length (times range in use) of ship's
		track.

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