Furuno FSV-24 Operator's Manual page 6

2.11 Tracking a Fish School (target lock) ................................................................................ 2-17
2.11.1 Selecting target lock type .................................................................................... 2-17
2.11.2 Fish school mode ................................................................................................ 2-18
2.11.3 Position mode...................................................................................................... 2-19
2.12 Detecting Fish Schools Aurally ........................................................................................ 2-20
2.12.1 Selecting audio sector......................................................................................... 2-20
2.12.2 Selecting direction............................................................................................... 2-21
2.12.3 Automatic training ............................................................................................... 2-21
2.12.4 Reverberation...................................................................................................... 2-22
2.13 Presentation Mode........................................................................................................... 2-22
2.13.1 Presentation mode description ........................................................................... 2-22
2.13.2 How to select a presentation mode..................................................................... 2-23
2.14 Fish Alarm ........................................................................................................................ 2-24
2.15 Relocating Fish School for Easy Observation ................................................................. 2-26
2.16 Comparing Fish School Concentration............................................................................ 2-27
2.17 Measuring Fish School Speed ......................................................................................... 2-28
2.17.1 Entering fish marks ............................................................................................. 2-28
2.17.2 Deleting fish marks.............................................................................................. 2-29
2.18 Event Mark, Own Ship Position Mark .............................................................................. 2-30
2.18.1 Entering an event mark ....................................................................................... 2-30
2.18.2 Entering an own ship position mark .................................................................... 2-31
2.18.3 Erasing an event mark, own ship position mark ................................................. 2-31
2.19 Net Course Mark .............................................................................................................. 2-32
2.19.1 Inscribing the net course mark............................................................................ 2-32
2.19.2 Deleting the net course mark .............................................................................. 2-33
2.20 Observing Net Behavior................................................................................................... 2-33
2.21 Storing, Recalling Picture................................................................................................. 2-34
2.21.1 Storing the picture ............................................................................................... 2-34
2.21.2 Recalling stored picture....................................................................................... 2-35
2.22 H-SCAN SETTING Menu Overview ................................................................................ 2-35
2.22.1 Displaying the H-SCAN SETTING menu............................................................ 2-35
2.22.2 H-SCAN SETTING menu description ................................................................. 2-36
2.23 Interpreting the Horizontal Display................................................................................... 2-40
2.23.1 Sample echo displays ......................................................................................... 2-40
3. VERTICAL MODE .........................................................................................3-1
3.1 Basic Operating Procedure................................................................................................ 3-1
3.2 Vertical Mode Indications and Marks................................................................................. 3-2
3.2.1 Vertical bearing mark, tilt mark.............................................................................. 3-3
3.2.2 Trackball mark position reference mark................................................................ 3-4
3.3 Vertical Mode Concept....................................................................................................... 3-4
3.4 Setting the Vertical Bearing Mark, Auto Train.................................................................... 3-5
3.4.1 Setting the vertical bearing mark .......................................................................... 3-5
3.4.2 Auto train ............................................................................................................... 3-5
3.5 Display Range.................................................................................................................... 3-6
3.6 Measuring the Range......................................................................................................... 3-6
3.7 Eliminating Weak Echoes .................................................................................................. 3-7
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