Furuno CSH-83, CSH-84 manual Display, SP-2

Output	2 W
Frequency	1.1 kHz with reverberation effect
(3) Transceiver
Transmitter	High power MOS FET amplifier with 10-step power reduction
	switch
Receiver	Low noise superheterodyne, continuously scanning beam form-
	ing, TVG, AGC, signal/processing, interference rejecter, hori-
	zontal vertical beam switching.
(4) Beamwidth (-3 dB) and Tilt Angle
TX Beamwidth	360° (horizontal) x 12° (vertical)
RX Beamwidth	11° (horizontal) x 12° (vertical)
Tilt Angle	-5°(upward) to 60° (downward), continuous.
	NOTE: Beamwidth depends on transmitter frequency.

2. DISPLAY

(1)	Picture Display	CSH-83: PPI display on 15 inch non-glare, high-resolution color
		CRT
		CSH-84: PPI display on 21 inch non-glare, high-resolution color
		CRT
(2)	Color	16 colors (sonar picture), 4 colors (marks)
(3)	Display Mode	a) Normal Mode (*with or without data display)
		b) Off-center
		c) Echo sounder combination (normal plus echo sounder)
		d) Audio combination
		e) Port/ starboard combination
		f) Horizontal slice combination
		g) Target slice
		h) True motion*
(4)	Display Marks	Own ship mark, heading mark, range rings, range/bearing mark,
		trackball mark, event mark, net shooting mark, fish mark, esti-
		mate mark,bearing scale, north mark*, ship’s track*, current
		mark*, net sonde mark*, target lock mark*
(5)	Alphanumeric Data	Sonar picture (range, tilt angle, gain), Trackball mark data (slant
		range, horizontal range, depth, bearing), Event mark data (hori-
		zontal 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 (time and distance run* be- tween turning on and off of net shooting mark), Setting change

SP-2