ii
FOREWORD ....................................... iii
MENU TREE ....................................... iv
SYSTEM CONFIGURATION....... v
PRINCIPLE OF OPERATION .... vi
OPERATIONAL OVERVIEW
1.1 Control Description ............................... 1
1.2 Indications, Markers .............................. 2
1.3 Turning On/Off the Power ..................... 3
1.4 Adjusting Tone and Brilliance ............... 3
1.5 Selecting a Display ................................ 3
1.6 Selecting Display Range........................ 7
1.7 Adjusting the Gain ................................. 7
1.8 Automatic Operation.............................. 8
1.9 Selecting Picture Advance
Speed ..................................................... 8
1.10 Erasing Weak Echoes .......................... 9
1.11 Measuring Depth ................................. 9
1.12 A-scope Display................................. 10
1.13 User Menu ......................................... 10
1.14 Suppressing Interference ................... 11
1.15 Suppressing Low Level Noise ........... 11
1.16 Selecting Background and
Echo Colors ....................................... 11
1.17 Alarms................................................ 12
1.18 White Marker..................................... 13
1.19 Fine Adjustment of Gain in
Dual-Frequency Operation ................ 13
OPTIONAL MODE
2.1 Displaying the Optional Mode Menu .. 15
2.2 System Menu ....................................... 15
2.3 Demonstration Display ........................ 17
2.4 Bottom Level ....................................... 17
2.5 TVG Level........................................... 18
2.6 Echo Offset .......................................... 18
TABLE OF CONTENTS
INTERPRETING THE DISPLAY
3.1 Zero Line ............................................. 19
3.2 Fish School Echoes.............................. 19
3.3 Bottom Echo ........................................ 19
3.4 Surface Noise/Aeration........................ 20
MAINTENANCE &
TROUBLESHOOTING
4.1 Checking.............................................. 21
4.2 Cleaning the Display Unit ................... 21
4.3 Transducer Maintenance...................... 21
4.4 Replacing the Fuse............................... 21
4.5 Troubleshooting ................................... 22
4.6 Test....................................................... 23
4.7 Test Pattern .......................................... 23
4.8 Clearing the Memory........................... 24
SPECIFICATIONS....................... SP-1
INDEX ............................................Index-1
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