Furuno CSH-5L/CSH-8L Table Of Contents, Foreword, System Configuration, Operational Overview

TABLE OF CONTENTS

FOREWORD			vi
SYSTEM CONFIGURATION			vii
1. OPERATIONAL OVERVIEW			1-1
1.1	Control Unit		1-1
1.2	Remote Controller (option)		1-2
1.3	Basic Operating Procedure		1-3
	1.3.1	Turning on the power	1-3
	1.3.2	Lowering the transducer	1-3
	1.3.3	Transmitting	1-4
	1.3.4	Adjusting backlighting of control unit	1-5
	1.3.5	Choosing a display mode	1-6
	1.3.6	Choosing the display range	1-8
	1.3.7	Adjusting the gain	1-9
	1.3.8	Retracting the transducer, turning off the power	1-9
1.4	Setting the Tilt Angle		1-10
	1.4.1	Automatic tilt on/off	1-10
	1.4.2	Bottom and tilt angle	1-12
	1.4.3 How to discriminate fish echoes from the bottom		1-12
	1.4.4	Points to consider	1-13
	1.4.5	Tilt angle for surface fish	1-13
	1.4.6	Suitable tilt angle	1-14
1.5	Finding Range and Bearing to a Target		1-14
1.6	Sonar Menu Overview		1-15
	1.6.1	Operating procedure	1-15
	1.6.2	Sonar menu description	1-16
2. FINE TUNING THE SONAR PICTURE			2-1
2.1	Eliminating Unwanted Echoes		2-1
2.2	Displaying Surface Fish Clearly		2-2
2.3	Suppressing Bottom Tail		2-2
	2.3.1	AGC	2-2
	2.3.2	Pulse length	2-3
	2.3.3 2ND AGC		2-3
2.4	Suppressing Bottom and Sea Surface Reflections in Shallow Fishing Grounds		2-4
2.5	Rejecting Sonar Interference and Noise		2-5
	2.5.1	Identifying noise source	2-5
	2.5.2	Rejecting noise with the interference rejector	2-5
	2.5.3	Rejecting noise with the noise limiter	2-5
	2.5.4	Rejecting interference with TX cycle	2-6
2.6	Choosing Beamwidth		2-7
	2.6.1	Horizontal beamwidth	2-7
	2.6.2	Vertical beamwidth	2-7
2.7	Deleting Weak Echoes		2-7
2.8	Echo Averaging		2-7

iii