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2.14 Horizontal Menu Overview.........................................................................................2-22
2.14.1 Horizontal menu description............................................................................2-22
2.15 Interpreting the Horizontal Display.............................................................................2-24
2.15.1 How the horizontal mode picture is painted.....................................................2-24
2.15.2 Sample displays ..............................................................................................2-25
2.15.3 Combination display examples........................................................................2-29
3. VERTICAL SCAN MODE.............................................................................. 3-1
3.1 Operational Overview...................................................................................................3-1
3.2 Typical Vertical Scan Mode Display .............................................................................3-2
3.3 Choosing a Range .......................................................................................................3-3
3.4 Choosing Train Center .................................................................................................3-4
3.5 Choosing Display Sector..............................................................................................3-5
3.6 Choosing Sector Center...............................................................................................3-6
3.7 Choosing Training Speed.............................................................................................3-7
3.8 Finding Echo Position with the Cursor .........................................................................3-7
3.9 Changing Training Direction.........................................................................................3-7
3.10 Event Marker................................................................................................................3-8
3.10.1 Deleting all event markers from the vertical scan display..................................3-9
3.11 Depth and Horizontal Range Markers..........................................................................3-9
3.12 Adjusting the Picture ..................................................................................................3-10
3.12.1 Displaying weak echoes clearly.......................................................................3-10
3.12.2 Suppressing noise and interference................................................................3-11
3.13 Vertical Menu Overview .............................................................................................3-12
3.13.1 Vertical menu description ................................................................................3-12
3.14 Interpreting the Vertical Scan Display ........................................................................3-13
3.14.1 How the vertical scan mode picture is painted ................................................3-13
3.14.2 Sample displays ..............................................................................................3-14
3.14.3 Horizontal/vertical scan port-starboard, Horizontal/vertical scan
upward-downward display...............................................................................3-16
4. ECHO SOUNDER MODE..............................................................................4-1
4.1 Operational Overview...................................................................................................4-1
4.2 Typical Echo Sounder Display .....................................................................................4-2
4.3 Choosing a Range .......................................................................................................4-3
4.4 Train Direction..............................................................................................................4-4
4.5 Choosing a Tilt Angle ...................................................................................................4-4
4.6 Choosing a Picture Advance Speed.............................................................................4-4
4.7 Measuring Range by Cursor ........................................................................................4-5
4.8 Event Marker................................................................................................................4-5
4.8.1 Inscribing the event marker...............................................................................4-6
4.8.2 Deleting all event markers from echo sounder display......................................4-6
4.9 Range Marker ..............................................................................................................4-7
4.10 Adjusting the Picture ....................................................................................................4-7
4.10.1 Displaying weak echoes clearly.........................................................................4-7
4.10.2 Finding echo strength (A-scope display) ...........................................................4-9
4.10.3 Suppressing interference and noise..................................................................4-9
4.11 Echo Sounder Menu Overview ..................................................................................4-10
4.11.1 Echo sounder menu description......................................................................4-10