TABLE OF CONTENTS
2.13 Horizontal Menu Overview.......................................................................................2-23
2.14 Interpreting the Horizontal Display...........................................................................2-25
2.14.1 How the horizontal mode picture is painted...................................................2-25
2.14.2 Sample echo displays................................................................................... 2-26
2.14.3 Combination display examples......................................................................2-30
3. VERTICAL SCAN MODE.............................................................................................3-1
3.1 Operational Overview................................................................................................ 3-1
3.2 Displaying Vertical Scan Mode Display......................................................................3-2
3.2.1 Typical vertical scan mode display.................................................................. 3-2
3.2.2 How the vertical scan picture is painted...........................................................3-3
3.2.3 Horizontal/vertical scan display.......................................................................3-4
3.3 Choosing the Range..................................................................................................3-6
3.4 Choosing Train Center...............................................................................................3-6
3.5 Choosing Display Sector............................................................................................3-7
3.6 Choosing Sector Center.............................................................................................3-8
3.7 Choosing the Tilt Speed.............................................................................................3-9
3.8 Finding Echo Position with the Cursor.......................................................................3-9
3.9 Event Marker...........................................................................................................3-10
3.9.1 Entering an event marker.............................................................................. 3-10
3.9.2 Deleting all event markers............................................................................. 3-11
3.10 Depth and Horizontal Range Markers......................................................................3-11
3.11 Adjusting the Picture................................................................................................3-12
3.11.1 Displaying weak echoes clearly.....................................................................3-12
3.11.2 Suppressing noise and interference .............................................................. 3-14
3.11.3 Gain adjustment............................................................................................ 3-14
3.11.4 Resolution color ............................................................................................ 3-15
3.11.5 Suppressing clutter........................................................................................ 3-15
3.11.6 Choosing horizontal range expansion factor.................................................. 3-16
3.12 Interpreting the Vertical Scan Display......................................................................3-17
3.12.1 Sample echo displays................................................................................... 3-17
4. ECHO SOUNDER MODE .............................................................................................4-1
4.1 Operational Overview................................................................................................ 4-1
4.2 Typical Echo Sounder Display................................................................................... 4-2
4.3 Choosing the Range..................................................................................................4-3
4.4 Train Direction...........................................................................................................4-4
4.5 Choosing Tilt Angle....................................................................................................4-4
4.6 Choosing 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............................................................................... 4-6
4.9 Range Marker............................................................................................................4-7
4.10 Adjusting the Picture..................................................................................................4-8
4.10.1 Displaying weak echoes clearly.......................................................................4-8
4.10.2 Finding echo strength (A-scope display)........................................................4-10
4.10.3 Gain adjustment............................................................................................ 4-11