Furuno CSH-53 manual Display, SP-2

(3) Transceiver
Transmitter:	High power MOS FET amplifier with 10-step power reduction switch
Receiver:	Low noise superheterodyne, continuously scanning beam forming, TVG,
	AGC, signal/processing, interference rejecter, horizontal vertical beam
	switching.
(4) Beamwidth (-3 dB) and Tilt Angle
TX Beamwidth:	360°(horizontal) x 10°to 16°(vertical)
RX Beamwidth:	9°to 18°(horizontal) x 13°to 16°(vertical)
Tilt Angle:	-5°(upward) to 60°(downward), continuous.
	NOTE: Beamwidth depends on transmitter frequency.

2. DISPLAY

(1) Picture display	PPI display on 15 inch non-glare, high-resolution color CRT
	(Commercially produced monitor available)
(2) Color	16 colors (sonar picture), 4 colors (marks)
(3) Display mode	a) Normal Mode (*with or without data display)
	b) Off-center
	c) *True motion
	d) Echo sounder combination (normal plus echo sounder)
	e) Audio combination
	f) Port/starboard combination
	g) Horizontal slice combination
(4) Display Marks	Own ship mark, heading mark, range rings, range/bearing mark, trackball
	mark, event mark, net shooting mark, fish mark, estimate mark, bearing
	scale, *north mark, *ship’s track, *current mark, *net sonde mark
(5) Alphanumeric Data
	Sonar picture (range, tilt angle, gain)
	Trackball mark data (slant range, horizontal range, depth, bearing)
	Event mark data (horizontal range, depth, first event marked depth, bearing)
	Fish mark data (*distance moved, *direction and *speed between two latest
	fish marks)
	Estimate mark data (estimation of fish volume by echo strength)
	Net shooting data (new setting appears in larger characters for 5 seconds
	when changed)
	*Current data (current speed, direction, layer, depth)
	*Navigation data (ship’s speed, heading, water depth, water temperature)
	*Own ship’s position (latitude/longtitude)
	Net sonde data *(net depth, distance to seabed, water temperature, sinking
	speed of net)

SP-2