User Manual and Operating Guide
iii
TABLE OF CONTENTS
FOREWORD 
A Word to CSH-23F/24F Owners...........................................................................................................vii 
Features ...............................................................................................................................................vii 
System Configuration ...........................................................................................................................viii 
SYSTEM CONFIGURATION 
Control Layout on Display Unit, Processor Unit and Remote Control Box ........................................... 1-1 
Main Panel .......................................................................................................................................... 1-2 
Sub Panel 1.......................................................................................................................................... 1-4 
Sub Panel 2 (data setting window) ....................................................................................................... 1-5 
Remote Control Box............................................................................................................................ 1-8 
OPERATIONAL OVERVIEW 
Turning the Power On/Off.................................................................................................................... 2-1 
Adjusting Screen Brilliance, Control Panel Backlighting...................................................................... 2-1 
Lowering the Transducer...................................................................................................................... 2-1 
Selecting a Display Mode .................................................................................................................... 2-2 
Selecting a Display Range.................................................................................................................... 2-3 
Setting the Tilt Angle........................................................................................................................... 2-3 
Adjusting the Gain............................................................................................................................... 2-7 
Measuring Range and Bearing to a Target ............................................................................................ 2-7 
FINE TUNING THE PICTURE 
Eliminating Unwanted Feeble Echoes .................................................................................................. 3-1 
Suppressing Seabed Tail....................................................................................................................... 3-3 
Suppressing Seabed and Sea Surface Reflections in Shallow Waters..................................................... 3-4 
Rejecting Sonar Interference and Noise................................................................................................ 3-4 
Adjusting Beamwidth .......................................................................................................................... 3-6 
MARKS AND DATA 
Marks, Data and Display Mode............................................................................................................ 4-1 
Permanently Displayed Marks and Data............................................................................................... 4-3 
Erasable Marks and Data ..................................................................................................................... 4-4 
MENU OVERVIEW 
USER Menu Operation........................................................................................................................ 5-1 
USER Menu Description...................................................................................................................... 5-3 
SYSTEM Menu Description ................................................................................................................ 5-5 
DATA SET Menu Description.............................................................................................................. 5-8 
INIT SET/TEST Menu Description.....................................................................................................5-11 










