Furuno 841 MARK-2 manual Menu description, Menu Function

Table 1-1 Menu description

	Menu									Function
										1. Selects control panel backlighting; four is
	1. BACKLIGHT/BRILLIANCE MENU
	Select item and option									maximum backlighting.
										2. Selects brilliance for echo trails and
	by ▲▼ keys.
										markers; four is maximum brilliance.
	1. Panel	1	2	3	4
	2. Echo Trails	1	2
	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
	Press HM-OFF to temporarily
	hide menu.
	<Press MENU for main menu.>
										1. Selects pulselength for 1.5 and 3 mile
	2. P/L, IR, NR & Radar Mode
	Select item and option									ranges.
										2. Selects radar interference rejector level; 3
	by ▲▼ keys.
										provides highest degree of rejection.
	1. Pulselength	SHORT			LONG
	2. Int Reject	OFF		1	2	3				3. Turns noise rejector on/off.
	3. Noise Reject	OFF		ON						4. Turns echo stretch on/off.
	4. Echo Stretch	OFF		ON						5. Select mode for CU or WPT-UP.
	5. Radar mode	CU		WPT-UP
	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
	Press HM-OFF to temporarily
	hide menu.
	<Press MENU for main menu.>
										1. Selects navigator among GPS, Loran and
	3. NAV DATA MENU
										all navigators available. In the "All" setting
	Select item and option									the radar selects a navigator in order of
	by ▲▼ keys.									navigator accuracy–GPS, Loran and other.
	1. Navigator		ALL		GPS		LC			2. Turns navigation data display on/off.
	2. Nav Data Disp
			OFF		ON					3. Selects position display format; latitude and
	3. Pos Disp Mode		L/L		TD
										longitude or Loran TDs.
	4. Depth Unit		M FA			FT
	5. Temp Unit		°C °F							4. Selects unit of measurement for depth;
	6. STBY Display		NORM			NAV				meters, feet or fathoms.
	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .									5. Selects unit of measurement for water
	Press HM-OFF to temporarily									temperature; °C or °F.
	hide menu.									6. Selects what to display during stand-by;
	<Press MENU for main menu.>									navigation data (requires navigation input)
										or "STBY".
										1. Selects window display format; zoom or
	4. MODE & FUNCTION MENU
										wide.
	Select item and option
										2. Selects watchman interval among 5 min, 10
	by ▲▼ keys.			ZOOM		WIDE				min or 20 min.
	1. Window Display
										3. Selects alarm mode; IN (alarm to targets
	2. Watchman			OFF 5'			10'		20'
	3. Alarm Mode			IN	OUT					entering the guard zone, or OUT (alarm to
	4. VRM Unit			NM KM			SM			targets exiting the guard zone.
	5. EBL Ref			REL TRUE						4. Selects VRM unit; nm, km or sm.
			1/8	1/4 1/2 3/4 1 1/5
	6. Range	3								5. Selects EBL reference; relative or true.
	2		4	8	12	16		24	*36	6. Selects ranges to use. Select range to
	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
										enable (disable) and press [ENT] key.
	Press HM-OFF to temporarily
										* Model 841 only
	hide menu.
	<Press MENU for main menu.>
Tuning										Selects AUTOMATIC or MANUAL tuning.
Self Check										Checks the radar system for proper operation.

* Default settings shown in boldface.

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