Furuno CSH-23F/24F manual Menu Description, Echo Test

Menu	Item	Description
ECHO TEST	Display Test	Checks the display unit without connection of
		other units. A test pattern is displayed.
	Demonstration	Reserved for future use.
E/S NET REC	E/S Audio Scale	Displays depth scale on right or left side of
		echo sounder display.
	ES Draft Adjust	Sets ship's draft to read true depth on echo
		sounder display.
	ES 2 Select	Selects equipment connected to ES 2 port;
		echo sounder or net recorder.
	Net Rec Range	Sets sounding range of net recorder transmitter
		unit.
DEFAULTS	Defaults	Restores default settings.
	Program Recalls	Reserved for future use.
OTHERS	EVENT KEY	EVENT: The EVENT	key functions to
		inscribe event mark.
		SHOOT: The EVENT	key functions as the
		SHOOT key on the remote control
		box to display net shooting mark.
	Data Format	Input data format can be selected among CIF,
		NMEA0183 Ver.1.5 and NMEA Ver.2.0.
	Auto Tilt	Auto tilt can be selected, wide or narrow.

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