Humminbird Fish Finder 300 series User Manual

363 GPS Chartplotter  
Operations Manual  
531448-1_B  
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Table of Contents  
How Sonar Works  
1
DualBeam PLUSTM Sonar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
How GPS and Cartography Work  
What’s On the Display  
Views  
3
5
7
Sonar View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Understanding Sonar History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Real Time Sonar (RTS®) Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Freeze Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Bottom Presentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Sonar Zoom View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
200/83 kHz Split Sonar View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Big Digits View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Circular Flasher View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Bird's Eye View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Chart View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Combo View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
View Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Viewing Cartography  
18  
18  
Introduction to Navigation  
Waypoints, Routes and Tracks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Save, Edit or Delete a Waypoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Navigate to a Waypoint or Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Add a Waypoint Target or Trolling Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
Save, Edit or Delete a Route . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
Save or Clear a Current Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
Edit, Delete or Hide Saved Tracks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
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Table of Contents  
Key Functions  
25  
POWER/LIGHT Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
VIEW Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
INFO Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
MENU Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
4-WAY Cursor Control Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
MARK Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
GOTO Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
ZOOM (+/-) Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
EXIT Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
Powering Up the Unit  
The Menu System  
28  
28  
30  
Start-Up Options Menu  
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
Simulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
System Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
Self Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
Accessory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
GPS Diagnostic View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
Sonar X-PressTM Menu (Sonar views only)  
34  
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35  
Upper Range (Advanced: Sonar, Split Sonar, Big Digits and Circular Flasher views only). . . . . . . . . 36  
Lower Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37  
Chart Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
Bottom View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
Bottom Range (Sonar Zoom view only when Bottom Lock is On) . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
Bottom Lock (Sonar Zoom view only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
Cancel Navigation (only when navigating) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40  
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Table of Contents  
Navigation X-PressTM Menu (Navigation views only)  
41  
Waypoint [Name] (Only with an active cursor on a waypoint). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42  
Cursor To Waypoint (Chart or Combo view only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
Save Current Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
Clear Current Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
Save Current Route (only when navigating) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44  
Skip Next Waypoint (only when navigating). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44  
Cancel Navigation (only when navigating) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45  
Remove Target (only if Target is Active) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45  
Remove Grid (only if Grid is Active) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46  
Sonar Window (Combo view only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46  
Waypoint [Name] (Most recently-created waypoint) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47  
Sonar Menu Tab  
48  
Beam Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49  
Fish ID+TM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50  
Fish ID Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51  
Real Time Sonar (RTS®) Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51  
Zoom Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52  
83 kHz Sensitivity (Advanced). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52  
Depth Lines (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53  
Surface Clutter (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54  
Noise Filter (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55  
Max Depth (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55  
Water Type (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
Navigation Menu Tab  
57  
Current Track. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
Saved Tracks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59  
Waypoints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61  
Chart Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
North Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
Grid Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
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Table of Contents  
Trackpoint Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63  
Track Min Distance (Advanced). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63  
Map Datum (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64  
Course Projection Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
Delete All Nav Data (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
Chart Menu Tab  
66  
Chart Detail Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67  
Map Borders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67  
Lat/Lon Grid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68  
Set Simulation Position (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68  
Set Map Offset (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
Clear Map Offset (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
Alarms Menu Tab  
70  
Depth Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71  
Fish ID Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71  
Low Battery Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72  
Temp Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72  
Off Course Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73  
Arrival Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73  
Drift Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
Alarm Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
Setup Menu Tab  
75  
Units - Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76  
Units - Temp (International only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76  
Units - Distance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76  
Units - Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77  
User Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77  
Language (International only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77  
Triplog Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78  
Restore Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78  
Select Readouts (Advanced, Sonar view only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79  
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Table of Contents  
Depth Offset (Advanced). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80  
Temp Offset (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80  
Speed Calibration (Advanced, with Temp/Speed only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81  
Local Time Zone (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81  
Daylight Saving Time (Advanced). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82  
Position Format (Advanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82  
Time Format (Advanced, International only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83  
Date Format (Advanced, International only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83  
NMEA Output (Advanced). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84  
Sonar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85  
Views Menu Tab  
Troubleshooting  
86  
87  
300 SeriesTM Doesn’t Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87  
300 SeriesTM Defaults to Simulator with a Transducer Attached . . . . . . . . . . . . . . . . . . . . . . 87  
Display Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88  
Finding the Cause of Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89  
Specifications  
Glossary  
90  
91  
Sonar Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91  
GPS & Navigation Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100  
Contact Humminbird®  
109  
NOTE: Entries in this Table of Contents which list (International only) are only available on  
products sold outside of the U.S. by our authorized International Distributors. To obtain a list  
of authorized International Distributors, please visit our website at www.humminbird.com or  
contact our Customer Resource Center at 1-800-633-1468 to locate the distributor nearest you.  
NOTE: Entries in this Table of Contents which list (with Temp/Speed) require the purchase of  
a separate accessory. You can visit our website at www.humminbird.com to order this  
accessory online or contact our Customer Resource Center at 1-800-633-1468.  
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How Sonar Works  
Sonar technology is based on sound waves. The 300 SeriesTM Fishing System uses sonar  
to locate and define structure, bottom contour and composition, as well as depth  
directly below the transducer.  
Your 300 SeriesTM Fishing System sends a sound wave signal and determines distance  
by measuring the time between the transmission of the sound wave and when the  
sound wave is reflected off of an object; it then uses the reflected signal to interpret  
location, size, and composition of an object.  
Sonar is very fast. A sound wave can travel from the surface to a depth of 240 ft  
(70 m) and back again in less than 1/4 of a second. It is unlikely that your boat can  
"outrun" this sonar signal.  
SONAR is an acronym for SOund and NAvigation  
Ranging. Sonar utilizes precision sound pulses or  
"pings" which are emitted into the water in a  
teardrop-shaped beam.  
The sound pulses "echo" back from objects in the  
water such as the bottom, fish and other  
submerged objects. The returned echoes are  
displayed on the LCD screen. Each time a new  
echo is received, the old echoes are moved across  
the LCD, creating a scrolling effect.  
When all the echoes are viewed side by side, an  
easy to interpret "graph" of the bottom, fish and  
structure appears.  
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The sound pulses are transmitted at various  
frequencies depending on the application. Very  
high frequencies (455 kHz) are used for greatest  
definition but the operating depth is limited.  
High frequencies (200 kHz) are commonly used  
on consumer sonar and provide a good balance  
between depth performance and resolution. Low  
frequencies (83 kHz) are typically used to achieve  
greater depth capability.  
The power output is the amount of energy  
generated by the sonar transmitter. It is commonly  
measured using two methods:  
Root Mean Square (RMS) measures power output  
over the entire transmit cycle.  
Peak to Peak measures power output at the  
highest points.  
The benefits of increased power output are the  
ability to detect smaller targets at greater distances,  
ability to overcome noise, better high speed  
performance and enhanced depth capability.  
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DualBeam PLUSTM Sonar  
Your 300 SeriesTM Fishing System uses a 200/83  
kHz DualBeam PLUSTM sonar system with a  
wide (60°) area of coverage. DualBeam PLUSTM  
sonar has a narrowly focused 20° center beam,  
surrounded by a second beam of 60°,  
expanding your coverage to an area equal to  
your depth. In 20 feet of water, the wider beam  
covers an area 20 feet wide. The 20° center  
beam is focused on the bottom, to show you  
structure, weeds and cover. The 60° wide beam  
is hunting for fish in the wide coverage area.  
DualBeam PLUSTM sonar returns can be blended  
together, viewed separately or compared side-  
by-side. DualBeam PLUSTM is ideal for a wide  
range of conditions - from shallow to very deep  
water in both fresh and salt water. Depth  
capability is affected by such factors as boat  
speed, wave action, bottom hardness, water  
conditions and transducer installation.  
How GPS and Cartography Work  
Your 300 SeriesTM Fishing System also supports GPS and chartplotting, and uses GPS and  
sonar to determine your position, display it on a grid, and provide detailed underwater  
information. The Global Positioning System (GPS) is a satellite navigation system  
designed and maintained by the U.S. Department of Defense. GPS was originally  
intended for military use; however, civilians may also take advantage of its highly  
accurate position capabilities, typically within +/- 10 meters, depending on conditions.  
This means that 95% of the time, the GPS receiver will read a location within 10 meters  
of your actual position. Your GPS Receiver also uses information from WAAS (the Wide  
Area Augmentation System), EGNOS (the European Geostationary Navigation Overlay  
Service), and MSAS (the MTSAT Satellite Augmentation System) satellites if they are  
available in your area.  
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GPS uses a constellation of 24 satellites that continually  
send radio signals to the earth. Your present position is  
determined by receiving signals from up to 16 satellites  
and measuring the distance from the satellites.  
All satellites broadcast a uniquely coded signal once per  
second at exactly the same time. The GPS receiver on  
your boat receives signals from satellites that are visible  
to it. Based on time differences between each received  
signal, the GPS receiver determines its distance to each  
satellite. With distances known, the GPS receiver  
mathematically triangulates its own position. With  
once per second updates, the GPS receiver then  
calculates its velocity and bearing.  
The GPS Receiver included with your 300 SeriesTM Fishing System, allows you to combine  
easy-to-use FishingGPSTM chartplotter and navigation capabilities with advanced  
fishfinding. The following GPS functionality is currently supported by the 300 SeriesTM  
Fishing System:  
• View current position  
• View current track (breadcrumb trail)  
• View precision speed and heading from your GPS receiver  
• Save tracks, waypoints and routes  
• Travel a route and navigate from one waypoint to the next.  
Your unit also comes with a built-in Uni-MapTM with a more detailed map of North  
America (Domestic models) or a more detailed map of Europe and Southeast Asia,  
including Australia and New Zealand (International models).  
Your 300 SeriesTM uses the GPS Receiver to determine the position of the boat  
automatically, and uses the zoom level settings on a particular view to select the best  
chart to display. See Viewing Cartography for more information.  
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What’s On the Display  
The 300 SeriesTM can display a variety of useful information about the area under and  
Depth - water depth; can be set to alarm when the  
Cursor - available in Freeze Frame and can  
depth of a sonar return and bottom depth  
water becomes too shallow.  
Speed - if a Temp/Speed accessory or GPS Receiver  
is attached, the 300 SeriesTM can display the speed  
of the boat, and can keep a Triplog of nautical or  
statute miles traveled.  
Temperature - water surface temperature.  
Timer - elapsed time with Temp/Speed Accessory  
or GPS Receiver.  
Distance - distance traveled with Temp/Speed  
Accessory or GPS Receiver.  
Average Speed - average speed reading with  
Temp/Speed Accessory or GPS Receiver.  
Bait Ball  
Hard Bottom  
Rocky Bottom  
Second Sonar Return - when the sonar signal  
bounces between the bottom and the surface of  
the water and back again. Use the appearance of  
the second return to determine bottom  
hardness. Hard bottoms will show a strong  
second return, while soft bottoms will show a  
very weak one or none at all.  
Cursor Dialog Box - indicates cursor depth on  
Longitude of the cursor position is shown,  
be marked at the cursor position for later  
NOTE: Entries in this view that list (with Temp/Speed or GPS Receiver) are available if either  
only the information from the GPS receiver will be displayed on the view.  
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adjacent to your boat, including the following items:  
be positioned in the Sonar View to provide  
below the cursor.  
Structure - where fish may be hiding.  
200 kHz, Narrow Beam Shaded Fish Symbol  
83 kHz, Wide Beam Hollow Fish Symbol  
Thermoclines - layers of water with different  
temperatures that appear at different depths and  
different times of the year. A thermocline typically  
appears as a continuous band of many gray levels  
moving across the display at the same depth.  
Fish - fish are displayed as arches and/or fish  
icons, and the unit can be set to alarm when a fish  
of a certain size is detected. When a target is  
detected and Fish ID+TM is on, a Fish ID+TM symbol  
with depth is displayed. The size of the symbol  
shows the intensity of the sonar return. The unit  
will clearly show schools of Bait Fish as "clouds"  
of different shapes and sizes, depending on the  
number of fish and boat speed.  
Soft Bottom  
RTS® (Real Time Sonar) Window  
the display and the depth of the bottom directly below the cursor. In addition, the Latitude and  
the distance to travel to the cursor position and the bearing to the cursor position. A waypoint can  
retrieval and use.  
device is connected to the 300 SeriesTM Fishing System. If both devices are connected, then  
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Views  
The views available on your 300 SeriesTM Fishing System are:  
Sonar views:  
Navigation views:  
• Sonar View  
• Zoom View  
• Bird’s Eye View  
• Chart View  
• 200/83 kHz Split Sonar View  
• Big Digits View  
• Combo View.  
• Circular Flasher View.  
NOTE: When you change any menu settings that affect the sonar, the view will update  
immediately (i.e. you don’t have to exit the menu to apply the change to the screen). For  
instance, by switching between "Inverse" and "Structure ID®" from the X-PressTM menu, it is  
possible to quickly alternate between the two viewing methods.  
Sonar View is the default view. When the VIEW key is pressed, the display cycles through  
the available views. When the EXIT key is pressed, the display cycles through the  
available views in reverse order. Any view can be hidden or displayed as part of the view  
rotation using the Views Menu tab.  
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Sonar View  
Sonar View presents a historical log of sonar returns. Depth is always displayed.  
Readouts for temperature and speed are automatically displayed if the appropriate  
accessory is connected. The most recent sonar returns are charted on the right side of  
the window; as new information is received, the older information is moved across the  
display to the left. A Digital Depth Readout is displayed in the upper left corner. A scale  
with Upper and Lower Depth Range readouts appears along the right edge of the Sonar  
View. The scale indicates the distance from the surface of the water to a depth range  
sufficient to show the bottom. Depth Range is automatically selected to keep the bottom  
visible on the display, although you can adjust it manually as well (see Sonar  
X-PressTM Menu). Five additional Digital Readouts display information from optional-  
purchase accessories. These information boxes can be customized to show only the  
information desired (see Setup Menu Tab, Select Readouts).  
Sonar View  
Upper Depth  
Range  
Depth  
RTS® Window  
Temperature  
Cursor  
Triplog  
Sonar History  
Window  
Cursor  
Dialog Box  
Lower Depth  
Range  
NOTE: If the Depth number is flashing, it means that the unit is having trouble locating the  
bottom. This usually happens if the water is too deep, the transducer is out of the water, the  
boat is moving too fast, or for any other reason that the unit can’t accurately receive  
continuous data.  
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Understanding Sonar History  
It is important to understand the significance of  
the 300 SeriesTM Fishing System display. The  
display does NOT show a literal 3-dimensional  
representation of what is under the water. Each  
vertical band of data received by the control head  
and plotted on the display represents something  
that was detected by a sonar return at a particular  
time. As both the boat and the targets (fish) may be  
moving, the returns are only showing a particular  
segment of time when objects were detected, not  
exactly where those objects are in relation to other  
objects shown on the display.  
Real Time Sonar (RTS®) Window  
A Real Time Sonar (RTS®) Window appears on the right side of the display in the Sonar  
View only. The RTS® Window always updates at the fastest rate possible for depth  
conditions and shows only the returns from the bottom, structure and fish that are  
within the transducer beam. The RTS® Window plots the depth and intensity of a sonar  
return. (See Sonar Menu: RTS® Window) .  
The Narrow RTS® Window  
indicates the sonar intensity  
through the use of grayscale.  
The grayscale used matches  
the bottom view grayscale  
setting used in the sonar  
history window (i.e. Inverse,  
StructureID®, WhiteLine®,  
Bottom Black). The depth of  
the sonar return is indicated  
by the vertical placement of  
the return on the display  
depth scale.  
The Wide RTS® Window in-  
dicates the sonar intensity  
through the use of a bar  
graph. The length of the  
plotted return provides an  
indication of whether the  
return is weak or strong. The  
depth of the sonar return is  
indicated by the vertical  
placement of the return on  
the display depth scale. The  
Wide RTS® Window does not  
make use of grayscale.  
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Freeze Frame  
Freeze Frame - Pressing any arrow on the 4-WAY Cursor Control key will freeze the screen  
and a cursor will be displayed on the screen. The cursor can be positioned on the display  
using the 4-WAY Cursor Control key to determine the depth of any sonar return. The  
RTS® Window continues to update in Freeze Frame. In addition, see the effects of menu  
setting changes with Instant Image Update. Pressing EXIT will exit Freeze Frame and the  
display will start to scroll. Freeze Frame is available in the Sonar, Sonar Zoom, and  
200/83 kHz Split Sonar Views.  
Bottom Presentation  
As the boat moves, the unit charts the changes in depth on the display to create a profile  
of the Bottom Contour. The type of bottom can be determined from the return charted  
on the display. A Hard Bottom such as compacted sediment or flat rock appears as a  
thinner line across the display. A Soft Bottom such as mud or sand appears as a thicker  
line across the display. Rocky Bottoms have a broken, random appearance.  
Bottom Contour Profile with RTS® Window.  
Temp/Speed Accessory is optional.  
Hard Bottom  
Soft Bottom  
Rocky Bottom  
The sonar returns from the bottom, structure and fish can be represented as either  
Inverse (default), WhiteLine®, Structure ID®, or Bottom Black. See Sonar X-PressTM Menu:  
Bottom View for details on how to set the bottom view.  
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Inverse is a method where weak returns are shown  
with dark pixels and strong returns with lighter pixels.  
This has the benefit of ensuring that weak signals will  
be clearly visible on the display.  
Structure ID® represents weak returns as light pixels  
and strong returns as dark pixels. This has the benefit  
of ensuring that strong returns will be clearly visible  
on the display.  
WhiteLine® highlights the strongest sonar returns in  
white, resulting in a distinctive outline. This has the  
benefit of clearly defining the bottom on the display.  
Bottom Black displays all pixels below the bottom  
contour as black, regardless of signal strength. This has  
the benefit of providing a high contrast between the  
bottom and other sonar returns on the display. Any  
targets such as fish, structure and thermoclines will be  
shown using the Structure ID® method.  
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Sonar Zoom View  
Sonar Zoom View increases the displayed resolution to separate sonar returns that  
are very close together, such as those caused by fish suspended close to the bottom  
or within structure. In Zoom View, the display is split to show a narrow slice of the  
full range view on the right and the zoomed view on the left. The full range view on  
the right also contains the Zoom Preview Box that shows what part of the full range  
view is shown in zoom view on the left; the Zoom Preview Box tracks the bottom in  
the full range view.  
As the depth changes, the zoomed view updates automatically to display a magnified  
image of the bottom. The Zoom Preview Box shows where the zoomed view is in  
relation to the full range view. The Zoom Level, or magnification, is displayed in the  
lower left corner and can be changed to suit conditions (see Sonar X-PressTM Menu: Zoom  
Level). Upper and Lower Zoom Depth Range numbers indicate the depth of the water  
which is being viewed.  
Digital depth is displayed in the upper left hand corner. The digital readouts in the Sonar  
Zoom View cannot be customized; therefore, information such as water temperature  
and voltage are unavailable in the Sonar Zoom View.  
Sonar Zoom View  
Upper Depth  
Range, Full  
Range View  
Depth  
Upper Depth  
Range, Zoom View  
Full Range  
View  
Zoomed  
View  
Zoom  
Preview Box  
Zoom Level  
Lower Depth  
Range, Full  
Range View  
Lower Depth Range,  
Zoom View  
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200/83 kHz Split Sonar View  
Split Sonar View displays sonar returns from the 83 kHz wide beam on the left side of  
the screen and displays sonar returns from the 200 kHz narrow beam on the right side  
of the screen. Depth is always displayed in the upper left hand corner. You can use the  
Split Sonar View to make side by side comparisons between the sonar returns from the  
83 kHz wide beam and the 200 kHz narrow beam.  
The digital readouts in the Split Sonar View cannot be customized; therefore,  
information such as water temperature and voltage are unavailable in the Split  
Sonar View.  
200/83 kHz Split Sonar View  
Upper Depth  
Range  
Depth  
200 kHz  
Sonar History  
Window  
83 kHz  
Sonar History  
Window  
Lower Depth Range  
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Big Digits View  
Big Digits View provides digital data in a large, easy-to-see format. Depth is always  
displayed. Readouts for temperature, speed and Triplog information are displayed  
automatically if the appropriate accessory is connected to the 300 SeriesTM Fishing  
System. The Triplog shows distance traveled, average speed, and time elapsed since the  
Triplog was last reset. The digital readouts in the Big Digits View cannot be customized.  
Big Digits View  
Timer shows the time  
elapsed since Triplog  
was last reset  
Depth  
Distance is the distance  
traveled since the Triplog  
was last reset  
Temperature  
Speed  
Voltage - the battery  
voltage.  
Average Speed shows  
the speed since the  
Triplog was last reset  
Circular Flasher View  
Circular Flasher View displays Real Time Sonar (RTS®) data in the traditional flasher  
format. Depth and temperature are always displayed. The digital readouts in the Flasher  
View cannot be customized.  
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Bird’s Eye View  
Bird's Eye View - This view shows a 3-D, perspective view of the track and the chart’s land  
contour from a point above and behind the boat (the eye point). As the boat turns, the  
eye point moves to follow the boat.  
When you press the 4-WAY Cursor key in the Bird’s Eye View, the position of the eye  
point will shift. This allows you to move and turn the eye point so that you can look  
off to the sides, or even behind the boat. Pressing the RIGHT or LEFT arrow keys on  
the 4-WAY Cursor key turns the eye point right or left, while pressing the UP arrow  
key moves the eye point forward, and pressing the DOWN arrow key moves the eye  
point backward.  
Pressing the EXIT key moves the eye point back to its original position behind and  
above the boat.  
Bird’s Eye View  
Depth  
Latitude and  
Longitude  
Position of Boat  
Land Contours  
Boat Icon  
Speed of Boat  
Bearing of Boat  
with Respect to  
True North  
Water Surface  
Temperature  
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Chart View  
Chart View - This view shows cartography from the built-in Uni-MapTM for the area  
surrounding your current position. The current track (also known as the position history  
or breadcrumb trail) showing where the boat has been, along with saved tracks,  
waypoints, and the current route (when navigating), are overlaid on the chart. You can  
use the 4-WAY Cursor Control key to shift/pan the chart to another area. You can use the  
ZOOM (+/-) keys to zoom in and out. You can use the INFO key to get information on the  
chart objects near the cursor.  
Chart View without Active Cursor  
Cartography  
Depth  
Map Scale  
Speed Of Boat  
Bearing of Boat  
with Respect to  
True North  
Water Surface  
Temperature  
Chart View with Active Cursor  
Cartography  
Depth  
Map Scale  
Active Cursor  
Latitude and  
Longitude  
Position of  
Cursor  
Bearing of Boat  
with Respect to  
True North  
Distance to  
the Cursor  
and Bearing  
to Cursor  
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Combo View  
Combo View - This view is displayed as a split screen, with Chart View on the left  
and Sonar View on the right side of the screen. The width of the sonar window can  
be changed.  
Combo View  
Depth  
Sonar Window  
Map Scale  
Cartography  
Bearing of Boat  
Water Surface  
with Respect to  
Temperature  
True North  
Speed of Boat  
View Orientation  
Both Chart and Combo views allow you to choose the orientation of the view. When  
North-Up orientation is selected, True North is shown at the top of the display. In  
other words, objects located to the north of the boat are drawn above the boat.  
When Course-Up orientation is selected, the direction of motion of the boat is  
shown at the top of the display. In other words, objects ahead of the boat are drawn  
above the boat. In both orientations, the view pans automatically, so that the boat is  
always centered on the display. When the boat is stationary, it is drawn as a circle.  
When the boat is in motion, it takes on a boat shape, pointed in the direction of  
motion (always Up in the Course-Up orientation).  
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Viewing Cartography  
In the Chart or Combo Views there are several cartography-related functions that you  
can access using various keys.  
Panning: Use the 4-WAY Cursor keys to move the  
chart around on the display in the direction of the  
key being pressed. When you do this, a bull's eye  
cursor is drawn at the center of the screen and  
is linked to the boat by a gray line, even if the boat  
is off the screen. At the same time, the  
temperature and speed boxes in the lower left  
corner are replaced with the distance and bearing  
from the boat to the cursor position and the  
latitude/longitude coordinates of the cursor.  
Chart View with Cursor Present  
Zooming: Use the Plus (+) key to Zoom In and the Minus (-) key to Zoom Out showing  
the cartography at different scales. The scale is indicated on the left side of the display.  
If you zoom in beyond the available chart data, the display will go into Overzoom mode  
whereby the last available chart data is amplified to reflect the scale selected. If you  
zoom in so far that no cartography is available, a lat/long grid will be drawn instead.  
Chart Info: Use the INFO key to get detailed information about the chart. If the cursor is  
active, you will see information about the chart objects located near the cursor.  
Introduction to Navigation  
Use the 300 SeriesTM Fishing System to establish waypoints at areas of interest and to  
navigate to those waypoints via a savable route (representing the shortest intended  
distance between waypoints). You can also view and save tracks, which represent the  
actual path of the boat.  
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Waypoints, Routes and Tracks  
Waypoints are stored positions that allow you to mark areas of interest or navigation  
points. Your 300 SeriesTM Fishing System can store up to 2000 waypoints.  
Waypoints, Routes and Tracks  
Depth  
BRG: Bearing  
Waypoint  
to Waypoint  
XTE: Cross  
Track Error.  
Distance of  
Boat from  
Route  
Bearing of  
Boat with  
Respect to  
True North  
Route  
DTG: Distance  
to Go to  
Waypoint  
Track  
Water Surface  
Temperature  
Speed of Boat  
Routes link two or more waypoints together to create a path for navigation, and are  
used in trip planning. You can link individual waypoints together by using the GOTO key.  
A route represents your intended navigation and shows the shortest path from each  
waypoint to the next. As you travel a route, staying on the route line is the most efficient  
way to get to your destination, although you should always look out for obstacles not  
shown on the chart. Your 300 SeriesTM Fishing System can store up to 50 routes that can  
each contain up to 50 waypoints.  
Tracks consist of detailed position history, and are displayed as a breadcrumb trail of  
trackpoints. The Current Track shows the position history since the unit was powered up  
(maximum of 20,000 trackpoints displayed). You can clear the Current Track or save it at  
any time. Your 300 SeriesTM Fishing System can store up to 25 saved tracks, each  
containing 20,000 trackpoints. The current track represents your actual path so far.  
19  
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Save, Edit, or Delete a Waypoint  
Save your current position as a waypoint: On any view, press the MARK key to save the  
current position of the boat as a waypoint.  
Save the cursor position as a waypoint: On the Chart or Combo view, use the Cursor key  
to designate the position you want to save as a waypoint. Then press the MARK key to  
save the marked position as a waypoint.  
Save a position from the sonar history: On any Sonar view, use the Cursor key to point  
to a feature in the sonar history (also called the Sonar Saver feature). Press the MARK key  
to create a waypoint at the location where that sonar reading was taken. The new  
waypoint will also record the depth at that location.  
NOTE: When you save a waypoint by any of these methods, a numerical waypoint name is  
automatically assigned. You can edit the waypoint information later to give it a different  
name and select an icon to represent it (see Waypoint submenu on the Navigation Main  
Menu Tab).  
Display the Waypoints Submenu: From any view, press the MENU key twice to display  
the Main Menu System, then use the RIGHT Cursor key to select the Navigation tab.  
Select Waypoints and press the RIGHT Cursor key to display the Waypoints submenu.  
Program a specific position as a waypoint: To create a waypoint that is NOT your current  
position, from the Waypoints submenu, select the Create option and press the RIGHT  
Cursor key. Use the Cursor keys to program a waypoint name, latitude, longitude, and  
icon before selecting Save.  
Edit a waypoint: From the Waypoints submenu, select Edit and press the RIGHT Cursor  
key to display a list of saved waypoints. Select the waypoint you want to edit and press  
the RIGHT Cursor key. Use the 4-WAY Cursor Control key to move from field to field, and  
the UP and DOWN Cursor keys to changes values once you are in a field. In the Waypoint  
Name, Latitude and Longitude fields, use the UP and DOWN Cursor keys to change the  
letter or number. All upper and lower case letters are available, as well as digits 0-9 and  
some punctuation characters. In the Waypoint Icon field, use the UP and DOWN Cursor  
keys to change the icon used to represent the waypoint on the Combo and Chart Views.  
You can exit these fields with the LEFT and RIGHT Cursor keys or by pressing the EXIT key.  
Select Save and press the RIGHT Cursor key to save your changes.  
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To make it easier to select a waypoint, select Sort By and press the RIGHT or LEFT Cursor  
keys to select a sort order:  
• Name shows the waypoints alphabetically  
• Time shows the most recently-created waypoint first  
• Distance shows the closest waypoint first.  
Delete a waypoint: From the Waypoints submenu, select Delete and press the RIGHT  
Cursor key to display a list of waypoints. Select the waypoint you want to delete, then  
press the RIGHT Cursor key. You will be asked to confirm deletion before the waypoint is  
actually deleted.  
Navigate to a Waypoint or Position  
Navigate to the cursor position: From the Chart or Combo view, use the Cursor key to  
select a position or waypoint to which you want to navigate. Press the GOTO key.  
Navigation will begin immediately.  
Navigate to a specified waypoint: Press the GOTO key, then choose the waypoint to  
which you would like to navigate from the waypoint list and press the RIGHT Cursor key  
to select it.  
NOTE: By repeating the previous instructions, you can add more waypoints to create a longer  
multi-segment route.  
Skipping a waypoint: From the Navigation X-PressTM menu, select Skip Next Waypoint  
and press the RIGHT Cursor key. If there is not another waypoint to skip to, navigation  
will be cancelled.  
Cancel navigation: From the Navigation X-PressTM menu, select Cancel Navigation and  
press the RIGHT Cursor key. Canceling navigation removes the route and any waypoints  
created using the GOTO key, but does not remove any saved routes from memory. You  
will be prompted to save the current route when you cancel navigation.  
21  
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Add a Waypoint Target or Trolling Grid  
Waypoint Target  
Add or Remove a Waypoint Target: From the  
Waypoints submenu, select Target and press the  
RIGHT Cursor key to display a list of waypoints. Select  
the waypoint you want to target. A target consisting  
of concentric circles centered on the selected  
waypoint will appear on all of the navigation views;  
the target shows various distance ranges from the  
targeted waypoint. To remove the target, choose  
Remove Target from the Navigation X-PressTM menu.  
Chart View with Target  
Add or Remove a Trolling Grid: From the Waypoints  
submenu, select Grid and press the RIGHT Cursor key  
to display a list of waypoints. Select the waypoint to  
which you want to add the grid. The trolling grid will  
appear on all of the navigation views, and can be  
used as a guide when trolling around a waypoint.  
The grid can be rotated to any desired heading using  
Grid Rotation from the Navigation Main menu. To  
remove the trolling grid, choose Remove Grid from  
the Navigation X-PressTM menu.  
Waypoint  
Trolling  
Grid  
Chart View with Grid  
NOTE: Only one waypoint can have either a target or a grid at one time. If you apply a target  
or a grid to a new waypoint, the original waypoint will lose its target or grid.  
NOTE: The spacing of the rings on the waypoint target and the spacing of the grid lines on the  
trolling grid is the same as the length of the scale bar on the left edge of the display. Zooming  
in or out will decrease or increase the spacing, respectively.  
22  
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Save, Edit or Delete a Route  
Save the current route: While you are navigating, the current route can be saved. From  
the Navigation X-PressTM menu, select Save Current Route and press the RIGHT Cursor  
key. Navigation will continue.  
Display the Routes submenu: From any view, press the MENU key twice to display the  
Main Menu System, then use the RIGHT Cursor key to select the Navigation tab. Select  
Routes and press the RIGHT Cursor key to display the Routes submenu.  
Create a route: From the Routes submenu, select Create and press the RIGHT Cursor key.  
A Route Edit screen will be displayed with an empty route. You can name the route, add  
waypoints to the route from the list of all waypoints, and order the waypoints in the  
route using the Cursor keys.  
Edit a saved route: From the Routes submenu, select Edit and press the RIGHT Cursor  
key. A Route Edit screen will be displayed. Select the route you wish to edit and press  
the RIGHT Cursor key. Re-name the route or change, delete or re-order the waypoints  
used in the route.  
Delete a saved route: From the Routes submenu, select Delete and press the RIGHT  
Cursor key. Select the route you wish to delete and press the RIGHT Cursor key. You  
will be asked to confirm your choice by pressing the RIGHT Cursor key again before  
the route is deleted.  
Travel a saved route: From the Routes submenu, select Travel and press the RIGHT  
Cursor key. A list of saved routes will appear. Select the route you wish to travel and press  
the RIGHT Cursor key to make this route the current route and begin navigation. You  
may also travel the route in either forward or reverse order.  
Route Info: From the Routes submenu, select Info and press the RIGHT Cursor key. A list  
of saved routes will appear. Select the route for which you want information, and press  
the RIGHT Cursor key. The list of waypoints in the route will be shown, with the distance  
and bearing from each waypoint to the next, as well as the distance and bearing from  
the current position to the first waypoint in the route.  
23  
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Save or Clear a Current Track  
Save the current track: From the Navigation X-PressTM menu, select Save Current Track  
and press the RIGHT Cursor key. The track will remain on the display, but will change  
from black to gray. To remove the track completely from the display, see Edit, Delete or  
Hide Saved Tracks.  
NOTE: When you save a track, a name is automatically assigned. The track name consists of  
a date/time stamp, but can be re-named later (see Edit a Saved Track).  
Clear the current track: From the Navigation X-PressTM menu, select Clear Current  
Track and press the RIGHT Cursor key. The track will be removed from the display and  
discarded.  
Edit, Delete or Hide Saved Tracks  
Display the Tracks Submenu: From any view, press the MENU key twice to display the  
Main Menu System, then use the RIGHT Cursor key to select the Navigation tab. Select  
Tracks and press the RIGHT Cursor key to display the Tracks submenu.  
Edit a saved track: From the Tracks submenu, select Edit and press the RIGHT Cursor key  
to display the list of saved tracks. Select the track you want to edit and press the RIGHT  
Cursor key. When the Edit Track dialog box appears, use the Cursor keys to move  
between fields. In the Track Name field, the UP and DOWN Cursor keys change the letter  
or number. All upper and lower case letters are available, as well as digits 0-9 and some  
punctuation characters. You can exit the Track Name field with the LEFT and RIGHT  
Cursor keys or by pressing the EXIT key. Select Save and press the RIGHT Cursor key to  
save your changes.  
Delete a saved track: From the Tracks submenu, select Delete and press the RIGHT  
Cursor key to display the list of saved tracks. Select the track you want to delete and  
press the RIGHT Cursor key. You will be asked to confirm deletion before the track is  
actually deleted.  
Hide or display a saved track: From the Tracks submenu, select Visibility and press the  
RIGHT Cursor key to display the list of saved tracks. Select the track you want to hide or  
display and use the Cursor keys to select Hidden or Visible. Press the EXIT key to return  
to the Tracks submenu.  
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Key Functions  
Your 300 SeriesTM Fishing System user interface consists of a set of easy-to-use keys that  
work with various on-screen views and menus to give you flexibility and control over  
your fishing experience.  
POWER/LIGHT Key  
The POWER/LIGHT key is used to turn the 300 SeriesTM Fishing System on  
and off, and also to adjust the backlight and contrast of the display. Press  
the POWER/LIGHT key to turn the unit on. The Title screen is then  
displayed until the 300 SeriesTM Fishing System begins sonar operation.  
Your 300 SeriesTM Fishing System will start up with the backlight  
on and will automatically turn it off to conserve power. To turn  
the backlight on for night fishing, or to adjust the display  
contrast, press the POWER/LIGHT key to access the Light and  
Contrast menu. Use the 4-WAY Cursor key to select Light or  
Contrast and then use the LEFT or RIGHT Cursor key to change  
the settings. Press EXIT to exit the Light and Contrast menu.  
Press and hold the POWER/LIGHT key for 3 seconds to turn the unit off. A message will  
appear telling you how many seconds there are until shutdown occurs. Your 300 SeriesTM  
Fishing System should always be turned off using the POWER/LIGHT key. This will  
ensure that shutdown occurs properly and any menu settings will be saved.  
VIEW Key  
The VIEW key is used to cycle through all available views. Press the VIEW  
key to advance to the next view. Repeatedly pressing VIEW cycles  
through all views available. Views can be hidden to optimize the system  
to your fishing requirements (see Views Menu Tab).  
INFO Key  
Info - Press the INFO key while in Bird's Eye, Chart or Combo View to  
display information about objects that are nearest to an active cursor.  
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MENU Key  
The MENU key is used to access the menu system.  
Start-Up Options Menu - Press the MENU key during the power up sequence to view the  
Start-Up Options menu.  
X-PressTM Menu - Press the MENU key once for the X-PressTM Menu. The X-PressTM menu  
allows you to access frequently-used settings without having to navigate through the  
whole menu system. When the X-PressTM menu is displayed, you can use the UP or  
DOWN Cursor keys to move to a particular menu choice. As soon as you alter a  
parameter (using the RIGHT or LEFT Cursor keys) the X-PressTM menu will collapse  
temporarily, and the screen will update if it is affected by your menu setting change,  
allowing you to see the effects of your action immediately. Reactivate the X-PressTM  
Menu by using the UP or DOWN Cursor keys.  
Main Menu - Press the MENU key twice for the tabbed Main Menu System. The Main  
Menu System is organized under tabbed headings to help you find a specific menu  
item quickly: Alarms, Sonar, Navigation, Chart, Setup, and Views tabs are part of your  
tabbed Main Menu System. Use the LEFT or RIGHT 4-WAY Cursor Control key to select  
a tab; then use the DOWN or UP key to select the menu item, and the LEFT or RIGHT  
key to alter a menu setting.  
4-WAY Cursor Control Key  
The 4-Way Cursor Control Key has multiple functions, depending on the  
situation:  
• Use the DOWN or UP arrow keys to select a menu choice from the menu list,  
then use the LEFT or RIGHT arrow keys to change a menu setting.  
NOTE: Menu choices are implemented and saved immediately - no further action is required.  
• In all Sonar views but the Big Digits view, pressing any 4-WAY Cursor Control  
key will activate Freeze Frame and will then allow you to position the cursor  
on the display.  
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MARK Key  
Press the MARK key while in any view to mark the position of a waypoint,  
either at the current boat location, or, if the Cursor is active, at the current  
Cursor location.  
GOTO Key  
If the Cursor is active, pressing the GOTO key while in any view creates a  
waypoint and starts navigation towards that waypoint. If the Cursor is  
not active, pressing the GOTO key displays the list of waypoints, so that  
you can select the waypoint towards which you want to navigate.  
ZOOM (+/-) Key  
Press the - or + ZOOM keys while in any of the Navigation Views or  
the Sonar Zoom View to change the scale of the view to appear  
closer or farther away.  
EXIT Key  
The EXIT key has multiple functions, depending on the situation:  
• If an alarm is sounding, pressing EXIT will cancel the alarm.  
• If a menu tab is selected, pressing EXIT will exit the menu mode and return  
to the view.  
• If a menu is active, pressing EXIT will return to the previous level in the menu  
system.  
• Pressing EXIT will cycle through the available views in reverse order.  
• If Freeze Frame is active, pressing EXIT will return to a scrolling display.  
• If the Cursor is active, pressing EXIT will remove the cursor from the display.  
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Powering Up the Unit  
Turn on your 300 SeriesTM Fishing System by pressing  
the POWER/LIGHT key. The Title screen is displayed  
until the 300 SeriesTM Fishing System begins  
operation. Your 300 SeriesTM Fishing System will  
begin Normal or Simulator operation, depending on  
the presence or absence of a transducer.  
363  
363 Title Screen  
The Menu System  
The menu system is divided into easy-to-use menu modules. The main components of  
the menu system are:  
Start-Up Options Menu - Press the MENU key during the power up sequence to view the  
Start-Up Options menu.  
X-PressTM Menu - The X-PressTM menu allows you to access the  
settings that are changed frequently without having to  
navigate through the whole menu system. Press the MENU  
key once to display the X-PressTM Menu. When you select a  
menu item from the X-PressTM menu, the menu will collapse,  
leaving only the menu choice on the screen. Use the Up or  
Down Cursor keys to reactivate the X-PressTM menu.  
NOTE: The X-PressTM Menu choices will vary depending on which  
view is active when you press the MENU key, as well as whether  
you are in Normal or Advanced User Mode. Either the Sonar or  
Navigation X-PressTM Menu will appear, depending on the view  
you are in.  
X-PressTM Menu  
Main Menu Tabs - Less frequently-adjusted menus are grouped into the Main Menu  
System. The Main Menu system is organized under the following tab headings to  
help you find a specific menu item quickly: Alarms, Sonar, Navigation, Chart, Setup,  
and Views.  
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Press the MENU key twice for the Main Menu, then use the  
4-WAY Cursor LEFT or RIGHT key to select a tab, and use the  
DOWN or UP key to select a specific menu item under that tab,  
then use the LEFT or RIGHT keys again to change a menu setting.  
Press the EXIT key to move quickly to the top of the tab. A down  
arrow at the bottom of a menu means that you can scroll to  
additional menu choices using the DOWN Cursor key. A right or  
left arrow on a menu choice means that you can use the RIGHT  
or LEFT Cursor keys to make changes or to see more information.  
Main Menu System  
Normal User Mode  
NOTE: The Main Menu choices will vary depending on whether you are in Normal or  
Advanced User Mode.  
User Mode (Normal or Advanced) - An Advanced Mode is provided for users who desire  
the highest level of control over the 300 SeriesTM Fishing System and Normal Mode for  
users who desire greater simplicity and fewer menu choices. Additional Advanced menu  
choices will be displayed throughout the menu system when you navigate to specific  
menus while in Advanced Mode. Any changes made while in Advanced Mode will  
remain in effect after you switch back to Normal Mode. See Setup Menu Tab: User Mode  
for specific instructions on changing to Advanced User Mode.  
Sonar Tab  
Normal Mode  
Sonar Tab  
Advanced Mode  
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Total Screen Update - when you change any menu settings that affect the Sonar  
View, the view will update immediately (i.e. you don’t have to exit the menu to apply  
the change to the screen). For instance, by switching between "Inverse" and  
"Structure ID®" from the X-PressTM menu it is possible to alternate quickly between  
the two viewing methods.  
Start-Up Options Menu  
Press the MENU key when the Title screen is  
displayed to access the Start-Up Options menu.  
Use the UP or DOWN 4-WAY Cursor keys to position  
the cursor, then the RIGHT Cursor key to select one of  
the following choices. If you wait too long, the system  
will default to whichever menu mode happens to be  
highlighted:  
Start-Up Options Menu  
• Normal  
• Simulator  
• System Status.  
See the following paragraphs for more information about each of these choices.  
Normal Operation  
Use Normal operation for on the water operation with a transducer connected. In  
addition, your 300 SeriesTM Fishing System uses advanced transducer detection methods  
to determine if a transducer is connected. If a functioning transducer is connected,  
Normal operation will be selected automatically at power up and your 300 SeriesTM  
Fishing System can be used on the water.  
Exit Normal operation by powering your 300 SeriesTM Fishing System off.  
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Simulator  
Use the Simulator to learn how to use your 300  
SeriesTM Fishing System before taking your boat on  
the water. The Simulator is a very powerful tool that  
simulates on the water operation, providing a  
randomly-updated display. We recommend going  
through this manual while using the Simulator, since  
all of the menus function and affect the display the  
way they actually do when in Normal operation.  
Simulator  
NOTE: To get the full benefit of the Simulator, it is important to select Simulator manually  
from the Start-Up Options menu as opposed to letting the 300 SeriesTM Fishing System enter  
Simulator automatically (as it will if a transducer is not connected and you do nothing during  
power up). Manually selecting Simulator from the Start-Up Options menu allows you to pre-  
configure your 300 SeriesTM Fishing System for on the water operation. Any menu changes you  
make will be saved for later use.  
A message will appear on the display periodically to remind you that you are using the  
Simulator.  
Exit the Simulator by powering your 300 SeriesTM Fishing System off.  
System Status  
Use System Status to view system connections and to conduct a unit self-test.  
The following screens are displayed in turn when you press the VIEW button when using  
System Status:  
• Self Test  
• Accessory Test  
• GPS Diagnostic View.  
Exit System Status by powering your Fishing System off.  
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Self Test  
Self Test displays results from the internal diagnostic  
self test, including unit serial number, Printed Circuit  
Board (PCB) serial number, software revision, total  
hours of operation and the input voltage.  
System Status Self Test Screen  
Accessory Test  
Accessory Test lists the accessories connected to the  
system.  
NOTE: The speed accessory will be detected only if the  
paddlewheel has moved since your 300 SeriesTM Fishing  
System was powered up.  
System Status Accessory Test Screen  
32  
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GPS Diagnostic View  
GPS Diagnostic View shows a sky chart and numerical data from the GPS receiver. The  
sky chart shows the location of each visible GPS satellite with its satellite number and a  
signal strength bar. A dark grey bar indicates that the satellite is being used to determine  
your current position. A light gray bar indicates that the satellite is being monitored, but  
is not yet being used.  
GPS Diagnostic View  
Sky Chart  
Satellite Being  
Used  
Satellite Being  
Monitored  
Current Latitude  
and Longitude  
This view also reports the current position, local time and date, and other numeric  
information. The current GPS Fix Type is reported as No Fix, 2D Fix, 3D Fix, or Enhanced.  
An Enhanced fix has been augmented using information from WAAS, EGNOS, or MSAS.  
A 3D or Enhanced Fix is required for navigation. HDOP (the Horizontal Dilution of  
Precision) is a GPS system parameter which depends on the current satellite  
configuration. HDOP is used to calculate the Estimated Position Error.  
33  
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Sonar X-PressTM Menu  
(Sonar views only)  
The Sonar X-PressTM menu provides access to the settings  
most frequently-used. Press the MENU key once while in  
any of the Sonar Views to access the Sonar X-PressTM menu.  
NOTE: Menu choices will vary depending on system settings  
such as whether the unit is set for Advanced User mode.  
Sonar X-PressTM Menu  
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Sensitivity  
Sensitivity controls how much detail is shown on the  
display and will adjust the sensitivity of all sonar frequencies. Increasing the sensitivity  
shows more sonar returns from small baitfish and suspended debris in the water;  
however, the display may become too cluttered. When operating in very clear water or  
greater depths, increased sensitivity shows weaker returns that may be of interest.  
Decreasing the sensitivity eliminates the clutter from the display that is sometimes  
present in murky or muddy water. If Sensitivity is adjusted too low, the display may not  
show many sonar returns that could be fish.  
NOTE: The Sensitivity setting is a global setting and will adjust the sensitivity of all sonar  
frequencies, as compared to specific sensitivity adjustments (such as 83 kHz Sensitivity) that  
allow you to adjust the level of sensitivity for one specific beam at a time.  
Sensitivity at Low  
Sensitivity at Medium  
Sensitivity at High  
To adjust the Sensitivity:  
1. Highlight Sensitivity on the Sonar X-PressTM menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the  
Sensitivity setting. (Low = 1, High = 20, Default = 10)  
35  
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Upper Range  
(Advanced: Sonar, Split Sonar, Big Digits  
and Circular Flasher views only)  
Upper Range sets the shallowest depth range that will be displayed on the Sonar, Split  
Sonar, Big Digits and Circular Flasher Views. The Upper Range menu choice is available  
when User Mode is set to Advanced (see Setup Menu Tab: User Mode) and can only be  
accessed from the Sonar, Split Sonar, Big Digits and Circular Flasher Views. Upper Range  
is often used with Lower Range.  
For example, if you are only interested in the area between 20 and 50 feet  
deep, you should set the Upper Depth Range to 20 and the Lower Depth  
Range to 50. The Sonar View will then show the 30 foot area between 20  
and 50, and will not show the surface or the bottom (assuming the  
bottom is deeper than 50 feet), and will show greater detail for that area  
between 20 and 50 feet.  
NOTE: A minimum distance of 10 feet will be maintained between the Upper and Lower  
Range regardless of the manual settings entered.  
To adjust the Upper Range:  
1. Make sure you are in Advanced Mode, then highlight Upper Range on the Sonar  
X-PressTM menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the  
Upper Range setting. (0 to 990 feet or 0 to 327 meters [International Models  
only], Default = 0)  
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Lower Range  
Lower Range sets the deepest depth range that will be  
displayed. Automatic is the default setting. When in automatic mode, the lower range  
will be adjusted by the unit to follow the bottom. Selecting a specific setting locks the  
depth range into Manual mode. Use both Upper and Lower Range together to view a  
M
specific depth range manually when looking for fish or bottom structure.  
displayed in the lower right corner of the screen when you start manually adjusting the  
Lower Range to indicate that you are in Manual mode.  
will be  
For example, if you are fishing in 60 feet of water but are only interested  
in the first 30 feet (surface to a depth of 30 feet) you should set the Lower  
Depth Range limit to 30. The display will show the 0 to 30 foot range,  
allowing you to see a more detailed view than you would see if the  
display went all the way to the bottom.  
NOTE: A minimum distance of 10 feet will be maintained between the Upper and Lower  
Range regardless of the manual settings entered.  
To adjust the Lower Range:  
1. Highlight Lower Range on the Sonar X-PressTM menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the  
Lower Range setting. (AUTO, 10 to 1000 feet, 3 to 330 meters [International  
Models only], Default = AUTO)  
37  
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Chart Speed  
Chart Speed determines the speed at which the sonar  
information moves across the display, and consequently the amount of detail shown. A  
faster speed shows more information in the Sonar Views and is preferred by most  
anglers; however, the sonar information moves across the display quickly. A slower  
speed keeps the information on the display longer, but the bottom and fish details  
become compressed and may be difficult to interpret. Regardless of the Chart Speed  
setting, the RTS® Window will update at the maximum rate possible for the depth  
conditions. Adjust Chart Speed to your personal preference.  
To adjust the Chart Speed:  
1. Highlight Chart Speed on the Sonar X-PressTM menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the Chart  
Speed setting. (1-9, Ultra, where 1 = Slow, 9 = Fast, Ultra = Fastest, Default = 5)  
Bottom View  
Bottom View selects the method used to represent  
bottom and structure on the display.  
Inverse represents weak returns as dark pixels and strong returns as lighter pixels. This  
has the benefit of ensuring that weak signals will be clearly visible on the display.  
Structure ID® represents weak returns as light pixels and strong returns as dark pixels.  
This has the benefit of ensuring that strong returns will be clearly visible on the display.  
WhiteLine® highlights the strongest sonar returns in white resulting in a distinctive  
outline. This has the benefit of clearly defining the bottom on the display.  
Bottom Black displays all pixels below the bottom contour as black, regardless of signal  
strength. This has the benefit of providing a high contrast between the bottom and  
other sonar returns on the display. Any targets such as fish, structure and thermoclines  
will be shown using the Structure ID® method.  
See Bottom Presentation for more information.  
To adjust the Bottom View:  
1. Highlight Bottom View on the Sonar X-PressTM Menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom View  
setting. (Inverse, Structure ID®, WhiteLine®, Bottom Black, Default = Inverse)  
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Bottom Range  
(Sonar Zoom view only when Bottom Lock is On)  
Bottom Range allows you to control how much of the water column, measured up  
from the bottom, is shown in the Sonar Zoom View. Choose a small value to see low-  
lying bottom structure or details of the bottom return. Choose a larger value to see  
large structure in deeper water. It is possible to set the Bottom Range to be greater  
than the depth. In this case, you may see surface clutter in a wavy band that mirrors  
changes in the depth.  
To adjust the Bottom Range:  
1. In the Sonar Zoom View, highlight Bottom Range on the Sonar X-PressTM menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom  
Range setting. (10 - 60 feet or 3-20 meters [International Models only],  
Default = 15 feet)  
Bottom Lock  
(Sonar Zoom view only)  
Bottom Lock changes the mode of the Zoomed view in the Sonar Zoom View. Bottom  
Lock continuously graphs the bottom at a constant point on the display regardless of  
changes in depth. This "flattens" out the bottom contour, but is effective at showing fish  
on or near the bottom.  
To turn on Bottom Lock:  
1. In the Sonar Zoom View, highlight Bottom Lock on the Sonar X-PressTM Menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom Lock  
setting to on. (Off, On, Default = Off)  
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Cancel Navigation  
(only when Navigating)  
Cancel Navigation discards the current route and exits Navigation Mode. This menu  
choice will only appear when you are currently navigating a route. This will not delete a  
previously-saved route.  
To Cancel Navigation:  
1. Highlight Cancel Navigation on the Sonar X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate canceling navigation.  
3. The Confirm dialog box will appear. To cancel navigation, press the RIGHT  
Cursor key once more. To avoid canceling navigation, press the LEFT Cursor key.  
4. The Save Current Route dialog box will appear. Use the RIGHT 4-WAY Cursor key  
to save the route or the LEFT 4-WAY Cursor key to decline saving the route.  
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Navigation X-PressTM Menu  
(Navigation views only)  
The Navigation X-PressTM menu provides access to the  
settings most frequently used. Press the MENU key once  
while in the Bird's Eye View, the Chart or the Combo View  
to access the Navigation X-PressTM menu.  
NOTE: Menu choices will vary depending on system settings,  
such as whether you are currently navigating.  
Navigation X-PressTM Menu  
41  
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Waypoint [Name]  
(Only with an active cursor on a waypoint)  
Waypoint [Name] allows you to view the Waypoints submenu for the waypoint under  
your cursor.  
To view the Waypoint [Name] Submenu:  
1. Move the cursor onto an existing waypoint and press the MENU key once, or use  
Cursor to Waypoint to select a waypoint from a list of saved waypoints.  
2. Highlight Waypoint[Name] on the Navigation X-PressTM menu.  
3. Use the RIGHT 4-Way Cursor Control key to view the Waypoints submenu, which  
contains the following menu choices:  
Waypoints Submenu  
The Waypoint Submenu contains the following menu choices:  
Edit allows you to edit the Name, Position (Latitude and Longitude) and select the Icon  
that will be used to represent the waypoint in the Chart and Combo Views.  
Delete allows you to delete a waypoint from the list of saved waypoints.  
Target allows you to apply a target to a waypoint selected from the list of waypoints.  
Grid allows you to apply a trolling grid to a waypoint selected from the list of waypoints.  
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Cursor to Waypoint  
(Chart or Combo view only)  
Cursor to Waypoint allows you to quickly move the cursor to any saved waypoint, so  
that you can locate it or edit it.  
NOTE This X-PressTM menu item appears only if you have saved waypoints.  
To move cursor to a saved waypoint:  
1. Highlight Cursor to Waypoint on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate Cursor to Waypoint.  
3. Use the UP or DOWN 4-WAY Cursor Control key to highlight the waypoint you  
wish to move the cursor to, then use the RIGHT 4-WAY Cursor Control key to  
select the destination waypoint.  
Save Current Track  
Save Current Track allows you to save the current track  
being displayed. After the current track is saved, a new current track is started.  
To Save Current Track:  
1. Highlight Save Current Track on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate saving the current track.  
3. The Confirm dialog box will appear. To save the current track, press the  
RIGHT Cursor key once more. To cancel saving the current track, press the  
LEFT Cursor key.  
Clear Current Track  
Clear Current Track allows you to clear the current track  
being displayed and start a new track at the present position.  
To Clear Current Track:  
1. Highlight Clear Current Track on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate clearing the current track.  
3. The Confirm dialog box will appear. To clear the current track, press the RIGHT Cursor  
key once more. To cancel clearing the current track, press the LEFT Cursor key.  
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Save Current Route  
(only when Navigating)  
Save Current Route allows you to save the current route being displayed. This menu  
choice will only appear when you are currently navigating a route.  
To Save Current Route:  
1. Highlight Save Current Route on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate saving the current route.  
3. The Confirm dialog box will appear. To save the current route, press the RIGHT  
Cursor key once more. To cancel saving the current route, press the LEFT Cursor key.  
Skip Next Waypoint  
(only when Navigating)  
Skip Next Waypoint removes the next waypoint from the current route. This menu  
choice will only appear when you are currently navigating a route.  
To Skip Next Waypoint:  
1. Highlight Skip Next Waypoint on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate skipping the next waypoint.  
3. The Confirm dialog box will appear. To skip the next waypoint, press the RIGHT  
Cursor key once more. To cancel skipping the next waypoint, press the LEFT  
Cursor key.  
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Cancel Navigation  
(only when Navigating)  
Cancel Navigation discards the current route and exits Navigation Mode. This menu  
choice will only appear when you are currently navigating a route. This will not delete a  
previously-saved route.  
To Cancel Navigation:  
1. Highlight Cancel Navigation on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate canceling navigation.  
3. The Confirm dialog box will appear. To cancel navigation, press the RIGHT  
Cursor key once more. To avoid canceling navigation, press the LEFT Cursor key.  
4. The Save Current Route dialog box will appear. Use the RIGHT 4-WAY Cursor key  
to save the route or the LEFT 4-WAY Cursor key to decline saving the route.  
Remove Target  
(only if a Target is Active)  
Remove Target removes the waypoint target from the display. This menu choice will  
only appear when a target has already been applied to a waypoint.  
NOTE: See Add a Waypoint Target or Trolling Grid for more information.  
To Remove a Target:  
1. Highlight Remove Target on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to remove the target.  
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Remove Grid  
(only if a Grid is Active)  
Remove Grid removes the waypoint grid from the display. This menu choice will only  
appear when a grid has already been applied to a waypoint.  
NOTE: See Add a Waypoint Target or Trolling Grid for more information.  
To Remove a Grid:  
1. Highlight Remove Grid on the Navigation X-PressTM menu.  
2. Use the RIGHT 4-WAY Cursor Control key to remove the grid.  
Sonar Window  
(Combo view only)  
Sonar Window sets the size of the Sonar Window in the Combo View. Sonar Window  
can only be accessed from the Combo View.  
To Set the Size of the Sonar Window in the Combo View:  
1. Highlight Sonar Window on the Navigation X-PressTM menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to adjust the size of the sonar  
window. (Wide, Medium, Narrow, Default = Medium)  
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Waypoint [Name]  
(Most recently-created waypoint)  
Waypoint [Name] allows you to view the waypoints submenu for the most recently  
created waypoint.  
NOTE: You must have pressed the MARK key at least once since you last powered up the  
fishfinder for this menu choice to appear.  
To view the Waypoint [Name] Submenu:  
1. Move the cursor to the desired position and press the MARK key once to save a  
waypoint.  
2. Highlight Waypoint[Name] on the Navigation X-PressTM menu.  
3. Use the RIGHT 4-Way Cursor Control key to view the Waypoints submenu.  
Waypoint [Name] Submenu  
The Waypoint Submenu contains the following menu choices:  
Edit allows you to edit the Name, Position (Latitude and Longitude) and select the Icon  
that will be used to represent the waypoint in the Chart and Combo Views.  
Delete allows you to delete a waypoint from the list of saved waypoints.  
Go To allows you to select a waypoint and start navigation toward that waypoint, or add  
that waypoint to the end of the current route.  
Target allows you to apply a target to a waypoint selected from the list of waypoints.  
Grid allows you to apply a trolling grid to a waypoint selected from the list of waypoints.  
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Sonar Menu Tab  
Press the MENU key twice to access the Main Menu  
System and then press the RIGHT Cursor key to select the  
Sonar tab.  
NOTE: Menu choices will vary depending on system settings  
such as whether the unit is set for Advanced User mode or  
what transducer is currently selected.  
Sonar Menu  
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Beam Select  
Beam Select sets which sonar returns from the  
transducer will be displayed on the screen.  
When set to 200/83 kHz, the returns from both beams are blended by starting with the  
83 kHz wide beam return, dimming it, and then overlaying it with the 200 kHz narrow  
beam return. The darker 200 kHz narrow beam sonar returns will stand out from the  
paler 83 kHz wide beam sonar returns. The Split Sonar View continues to display the  
sonar returns from each beam in their respective windows. The blended information is  
shown in the Sonar View, Sonar Zoom View, and the Big Digits View. The RTS® Window  
in the Sonar View and the Circular Flasher View will only show the returns from the 200  
kHz narrow beam.  
When set to 200 kHz, only the returns from the 200 kHz narrow beam will be displayed  
in the Sonar View, the Sonar Zoom View, the Big Digits View and the Circular Flasher  
View. The Split Sonar View will continue to display returns from both beams in their  
respective windows. The RTS® Window in the Sonar View will display the returns from  
the 200 kHz narrow beam.  
When set to 83 kHz, the returns from the 83 kHz wide beam will be displayed in the  
Sonar View, the Sonar Zoom View, the Big Digits View and the Circular Flasher View. The  
Split Sonar View will continue to display returns from both beams in their respective  
windows. The RTS® Window will display the returns from the 83 kHz wide beam.  
To use Beam Select:  
1. Highlight Beam Select on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to select either the 83 kHz  
beam, the 200 kHz beam, or the 200/83 kHz beam. (200/83 kHz, 200 kHz,  
83 kHz, Default = 200 kHz)  
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Fish ID+TM  
Fish ID+TM uses advanced signal processing to interpret  
sonar returns, and will display a Fish Symbol when very selective requirements are met.  
When a fish is detected, a fish icon and its depth are displayed above the return that has  
been classified as being a fish. Three different fish size icons represent the intensity of  
the sonar return, and provide an indicator of relative fish size.  
DualBeam PLUSTM Sonar models represent targets detected in the 200 kHz narrow beam  
as Shaded Fish Symbols, and represent targets detected in the 83 kHz wide beam as  
Hollow Fish Symbols.  
200 kHz, Narrow Beam  
Shaded Fish Symbols  
83 kHz, Wide Beam  
Hollow Fish Symbols  
When Fish ID+TM is turned off, the 300 SeriesTM Fishing System shows only the raw sonar  
returns on the display. These returns will often result in "arches" forming on the display,  
indicating potential targets. Due to the transducer beam angle, the distance to a fish  
decreases as the fish moves into the beam, and then increases as it moves out again,  
creating a Fish Arch when this distance change is shown on the display. Boat speed,  
chart speed, and the position of the fish within the sonar beam greatly affect the shape  
of the arch.  
Transducer Cone and Fish Arches  
To turn Fish ID+TM on or off:  
1. Highlight Fish ID+ on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Fish ID+TM setting  
On or Off. (Off, On, Default = Off)  
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Fish ID Sensitivity  
Fish ID Sensitivity adjusts the threshold of the Fish  
ID+TM detection algorithms. Selecting a higher setting allows weaker returns to be  
displayed as fish. This is useful for identifying smaller fish species or baitfish. Selecting  
a lower setting displays fewer fish from weak sonar returns. This is helpful when  
seeking larger species of fish. Fish ID Sensitivity is used in conjunction with Fish ID+TM.  
Fish ID+TM must be On for Fish ID Sensitivity to affect the ability of the 300 SeriesTM  
Fishing System to identify sonar returns as fish.  
To change the Fish ID Sensitivity setting:  
1. Highlight Fish ID Sensitivity on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID  
Sensitivity setting. (Low = 1, High = 10, Default = 5)  
Real Time Sonar (RTS®) Window  
RTS® Window sets the RTS® Window to either Wide or  
Narrow, or turns it off in the Sonar View. The RTS® Window always updates at the fastest  
rate possible and only displays returns that are within the transducer beam. (See Real  
Time Sonar (RTS®) Window for more information.)  
RTS® Window (Wide)  
RTS® Window (Narrow)  
RTS® Window (Off)  
To change the RTS® Window setting:  
1. Highlight RTS Window on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the RTS® Window  
setting. (Wide, Narrow, Off, Default = Wide)  
51  
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Zoom Width  
Zoom Width adjusts the width of the Zoom window on  
the Sonar Zoom View.  
To change the Zoom Width Setting:  
1. Highlight Zoom Width on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Zoom Width  
setting. (Narrow, Medium, Wide, Default = Wide)  
83 kHz Sensitivity  
(Advanced)  
83 kHz Sensitivity changes the sensitivity of the 83 kHz beam. Increasing the 83 kHz  
Sensitivity will display additional weak returns and decreasing the 83 kHz Sensitivity will  
display fewer weak returns. The 83 kHz Sensitivity menu choice is only available when  
User Mode is set to Advanced (see Setup Menu Tab: User Mode).  
NOTE: 83 kHz Sensitivity is particularly useful for adjusting the sensitivity of the 83 kHz sonar  
returns in the 200/83 kHz Split Sonar View. The 83 kHz sensitivity can be adjusted without  
affecting the sensitivity of the 200 kHz returns shown in the 200 kHz sonar window.  
To set the 83 kHz Sensitivity:  
1. Make sure you are in Advanced User Mode, then highlight 83 kHz Sensitivity on  
the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to set the 83 kHz Sensitivity.  
(-10 to +10, Default = 0)  
52  
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Depth Lines  
(Advanced)  
Depth Lines divide the display into four equal sections that are separated by three  
horizontal depth lines. The depth of each line is displayed along the depth scale. You can  
either turn Depth Lines On or Off. The Depth Lines menu choice is available when User  
Mode is set to Advanced (see Setup Menu Tab: User Mode).  
Depth Lines  
Depth  
Lines  
To change the Depth Lines setting:  
1. Make sure you are in Advanced User Mode, then highlight Depth Lines on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Depth Lines setting  
On or Off. (Off, On, Default = On)  
53  
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Surface Clutter  
(Advanced)  
Surface Clutter adjusts the filter that removes surface clutter noise caused by algae and  
aeration. The lower the setting, the less surface clutter will be displayed. The Surface  
Clutter menu choice is available when User Mode is set to Advanced (see Setup Menu  
Tab: User Mode).  
Surface Clutter  
Surface  
Clutter  
To change the Surface Clutter setting:  
1. Make sure you are in Advanced User Mode, then highlight Surface Clutter on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Surface Clutter  
setting. (Low = 1 to High = 10, Default = 5)  
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Noise Filter  
(Advanced)  
Noise Filter adjusts the sonar Noise Filter to limit interference on the display from  
sources such as your boat engine, turbulence, or other sonar devices. The Noise Filter  
menu choice is available when User Mode is set to Advanced (see Setup Menu Tab:  
User Mode).  
NOTE: The Off setting removes all filtering; Low, Medium and High settings add progressive  
filtering of the sonar returns. In some deep water situations, the High setting may actually  
hinder your unit’s ability to find the bottom.  
To change the Noise Filter setting:  
1. Make sure you are in Advanced User Mode, then highlight Noise Filter on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Noise Filter  
setting. (Off, Low, Medium, High1, High2, High3, Default = Low)  
Max Depth  
(Advanced)  
Max Depth adjusts the maximum depth of operation. The performance of your 300  
SeriesTM Fishing System can be tuned to the maximum depth you will be fishing in by  
setting the Max Depth. When a maximum depth is set, your 300 SeriesTM Fishing System  
will not attempt to acquire sonar data below that depth, thus increasing overall  
performance. When Max Depth is set to Auto, the 300 SeriesTM Fishing System will  
acquire bottom readings as needed (within the capacity of the unit). If the bottom is  
deeper than the Max Depth setting, the digital depth readout will flash, indicating that  
the 300 SeriesTM Fishing System cannot locate the bottom. The Max Depth menu choice  
is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).  
To change the Max Depth setting:  
1. Make sure you are in Advanced User Mode, then highlight Max Depth on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Max Depth  
setting. (AUTO, 10 to 1000 feet, 3 to 330 meters [International Models only],  
Default = AUTO)  
55  
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Water Type  
(Advanced)  
Water Type configures your unit for operation in fresh or salt water. The Water Type  
menu choice is available when User Mode is set to Advanced (see Setup Menu Tab:  
User Mode).  
NOTE: In salt water, what would be considered a large fish might be 2 to 10 times bigger than  
a large fish in fresh water (depending on the type of fish you are seeking). The salt water  
setting allows for a greater range in fish size adjustment to account for this. Also, make sure  
that the Water Type is set accurately, especially in salt water, as this affects the accuracy of  
deep water depth readings.  
To change the Water Type setting:  
1. Make sure you are in Advanced User Mode, then highlight Water Type on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Water Type  
setting. (Fresh, Salt, Default = Fresh)  
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Navigation Menu Tab  
Press the MENU key twice to access the Main Menu  
System, then press the RIGHT cursor key to select the  
Navigation tab.  
NOTE: Menu choices will vary depending on system settings.  
Navigation Menu Tab  
57  
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Current Track  
Current Track allows you to view the Current Track  
submenu.  
To view the Current Track Submenu:  
1. Highlight Current Track on the Navigation main menu.  
2. Use the RIGHT 4-WAY Cursor Control keys to view the Current Track submenu.  
Current Track Submenu  
The Current Track Submenu contains the following menu choices:  
Save Current Track allows you to save the current track.  
Clear Current Track allows you to clear the current track.  
Appearance allows you to change the style and color of the current track.  
(Breadcrumb Trail, Dashed Line, or Solid Line, and if a line, the color of the line, from  
light to dark gray to black).  
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Saved Tracks  
Saved Tracks allows you to view the Saved Tracks  
submenu.  
To view the Saved Tracks Submenu:  
1. Highlight Saved Tracks on the Navigation main menu.  
2. Use the RIGHT 4-WAY Cursor Control keys to view the Saved Tracks submenu.  
Saved Tracks Submenu  
The Saved Tracks Submenu contains the following menu choices:  
Edit allows you to select a previously-saved track and edit its name, whether it is visible  
or not, and its appearance.  
Delete allows you to delete a track from a list of previously-saved tracks.  
Default sets the appearance of the track created by selecting Save Current Track.  
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Waypoints  
Waypoints allows you to view the Waypoints  
submenu.  
To view the Waypoints Submenu:  
1. Highlight Waypoints on the Navigation main menu.  
2. Use the RIGHT 4-WAY Cursor Control keys to view the Waypoints submenu.  
Waypoints Submenu  
The Waypoints Submenu contains the following menu choices:  
Create allows you to create a new waypoint and edit it immediately. The current boat  
position will be used as the default, but you can set the coordinates to any valid position.  
The Icon used to represent the waypoint in the Chart and Combo Views can also be  
changed.  
Edit allows you to choose from a list of previously-saved waypoints, then edit the Name,  
Position (Latitude and Longitude) and select the Icon that will be used to represent the  
waypoint in the Chart and Combo Views.  
Delete allows you to delete a waypoint from the list of saved waypoints.  
Cursor To allows you to move the cursor quickly to a waypoint selected from the list of  
saved waypoints.  
Go To allows you to select a waypoint and start navigation toward that waypoint, or add  
that waypoint to the end of the current route.  
Target allows you to apply a target to a waypoint selected from the list of waypoints.  
Grid allows you to apply a trolling grid to a waypoint selected from the list of waypoints.  
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Routes  
Routes allows you to view the Routes submenu.  
To view the Routes Submenu:  
1. Highlight Routes on the Navigation main menu.  
2. Use the RIGHT 4-WAY Cursor Control keys to view the Routes submenu.  
Routes Submenu  
The Routes Submenu contains the following menu choices:  
Create allows you to create a new, empty route and add waypoints to it immediately.  
Edit allows you to select a previously-saved route and edit its name and the  
waypoints on it.  
Delete allows you to delete a route from a list of previously-saved routes.  
Travel allows you to select a previously-saved route to use as the current route; this  
menu setting also begins navigation on this route. Routes can be traveled in either the  
forward or reverse direction.  
Info displays information about the route, including the distance and bearing from each  
waypoint to the next.  
61  
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Chart Orientation  
Chart Orientation allows you to select whether the  
Chart and Combo Views should be drawn North-Up or Course-Up.  
To change the Chart Orientation setting:  
1. Highlight Chart Orientation on the Navigation main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Chart  
Orientation setting. (North-Up, Course-Up, Default = North-Up)  
NOTE: The Chart Orientation setting does not apply to the Bird's Eye View.  
North Reference  
North Reference allows you to have bearings displayed  
with one of two orientations: True North or Magnetic North.  
To change the North Reference setting:  
1. Highlight North Reference on the Navigation main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the North Reference  
setting. (True, Magnetic, Default = True)  
Grid Rotation  
Grid Rotation allows you to set the orientation of the  
trolling grid in degrees, where a setting of 0° displays a standard North, South, East,  
West alignment. See Waypoints for information on how to set a Grid.  
To change the Grid Rotation setting:  
1. Highlight Grid Rotation on the Navigation main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Grid Rotation  
setting. (0° to 89°, Default = 0°)  
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Trackpoint Interval  
Trackpoint Interval allows you to select the time  
period between trackpoints. The current track can only contain up to 20,000  
trackpoints, so longer time periods cause the track to extend back further in time,  
but will be less detailed.  
NOTE: Trackpoint Interval works in conjunction with Track Min Distance. Both conditions  
must be met before a trackpoint is added to the current track.  
To change the Trackpoint Interval setting:  
1. Highlight Trackpoint Interval on the Navigation main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Trackpoint  
Interval setting. (1 second, 5 seconds, 10 seconds, 15 seconds, 30 seconds or 60  
seconds, Default = 15 seconds)  
NOTE: During slow travel or drift, setting both Trackpoint Interval and Track Min Distance to  
small values will allow you to increase the track resolution.  
Track Min Distance  
(Advanced)  
Track Min Distance allows you to set a minimum distance of travel before a trackpoint  
is added to the track. The Track Min Distance menu choice is only available when User  
Mode is set to Advanced (see Setup Menu Tab: User Mode).  
NOTE: Track Min Distance works in conjunction with Trackpoint Interval. Both conditions  
must be met before a trackpoint is added to the current track.  
To change the Track Minimum Distance setting:  
1. Make sure you are in Advanced User Mode, then highlight Track Min Distance  
on the Navigation main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Track Min  
Distance setting. (1 to 300 feet or 1 to 100 meters [International Units only],  
Default = 16 ft, 5 m)  
NOTE: During slow travel or drift, setting both Trackpoint Interval and Track Min Distance to  
small values will allow you to increase the track resolution.  
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Map Datum  
(Advanced)  
Map Datum allows you to change the map coordinate system used by the 300 SeriesTM  
Fishing System to match those of a paper map. The Map Datum menu choice is only  
available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).  
To change the Map Datum setting:  
1. Make sure you are in Advanced User Mode, then highlight Map Datum on the  
Navigation main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Map Datum  
setting. (Default = WGS 84)  
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Course Projection Line  
Course Projection Line allows you to display or hide an  
arrow extending from the bow of the boat that projects your current course, and shows  
where the boat will go if you continue on your present course.  
To change the Course Project Line setting:  
1. Highlight Course Projection Line on the Navigation main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Course  
Projection Line setting (Hidden, Visible, Default = Hidden)  
Delete All Nav Data  
(Advanced)  
Delete All Nav Data allows you to delete all saved Tracks, Waypoints and Routes. This  
menu choice should be used with caution. The Delete All Nav Data menu choice is only  
available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).  
To Delete All Navigation Data:  
1. Make sure you are in Advanced User Mode, then highlight Delete All Nav Data  
on the Navigation main menu.  
2. Use the RIGHT 4-WAY Cursor Control key to delete all navigation data.  
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Chart Menu Tab  
Press the MENU key twice to access the Main Menu  
System and then press the RIGHT Cursor key to select  
the Chart tab.  
NOTE: Menu choices will vary depending on system  
settings such as whether the unit is set for Advanced User  
mode.  
Chart Menu  
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Chart Detail Level  
Chart Detail Level allows you to select how much chart  
detail you want displayed on the Navigation Views. Basic shows land areas, ports,  
obstructions and restricted areas. Navigation shows navaids, landmarks, ferryways and  
navigation routes in addition to the Basic information. Underwater shows depth  
contours, fishing areas, underwater wrecks, tides and currents in addition to the Basic  
and Navigation information. All shows roads, buildings, railways, and other notations in  
addition to the Basic, Navigation and Underwater information.  
To change the Chart Detail Level setting:  
1. Highlight Chart Detail Level on the Chart main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Chart Detail  
Level setting. (Basic, Navigation, Underwater, All, Default = All)  
NOTE: Some chart details are only available with optional-purchase MMC/SD cards.  
Map Borders  
Map Borders allows you to display or hide map borders.  
A Map Border indicates an area which contains a different map.  
Map Borders  
Map Borders  
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To change the Map Borders setting:  
1. Highlight Map Borders on the Chart main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Map Borders  
setting. (Hidden, MMC/SD Only, All Visible, Default = Hidden)  
Lat/Lon Grid  
Lat/Lon Grid allows you to display or hide a grid  
showing latitude and longitude lines.  
To change the Lat/Lon Grid setting:  
1. Highlight Lat/Lon Grid on the Chart main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Lat/Lon Grid  
setting. (Hidden, Visible, Default = Hidden)  
Set Simulation Position  
(Advanced)  
Set Simulation Position allows you to set the position of the boat used in the Simulator.  
The Set Simulation Position menu choice is only available when User Mode is set to  
Advanced (see Setup Menu Tab: User Mode).  
To set the Simulation Position:  
1. Activate the cursor and move it to the coordinates from where you want the  
simulation to start.  
NOTE: The cursor must be active in order for this procedure to work.  
2. Make sure you are in Advanced User Mode, then highlight Set Simulation  
Position on the Chart main menu.  
3. Use the RIGHT 4-WAY Cursor Control key to change the Simulation Position  
setting. A confirmation dialog box will appear to allow you to change your  
mind, or to confirm your choice. If the cursor was not active before you  
began this procedure, you will see an error message. Exit the menu, set the  
cursor, then try again.  
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Set Map Offset  
(Advanced)  
Set Map Offset allows you to change the map offset used by the 300 SeriesTM. The Set  
Map Offset menu choice is only available when User Mode is set to Advanced (see Setup  
Menu Tab: User Mode).  
NOTE: The Map Offset will be applied to all maps and not just the map that requires the  
correction. The Map Offset should be cleared if a different map is to be used.  
To change the Map Offset setting:  
1. Activate the cursor and move it to the location where the Map Offset will be  
applied.  
NOTE: The cursor must be active in order for this procedure to work.  
2. Make sure you are in Advanced User Mode, then highlight Set Map Offset on  
the Chart main menu.  
3. Use the RIGHT 4-WAY Cursor Control key to set the Map Offset. A confirmation  
dialog box will appear to allow you to change your mind, or to confirm your  
choice. If the cursor was not active before you began this procedure, you will see  
an error message. Exit the menu, set the cursor, then try again.  
Clear Map Offset  
(Advanced)  
Clear Map Offset allows you to clear the Map Offset. The Clear map Offset menu choice  
is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode)  
and a Map Offset is currently active.  
To Clear Map Offset:  
1. Make sure you are in Advanced User Mode, then highlight Clear Map Offset on  
the Chart main menu.  
2. Use the RIGHT 4-WAY Cursor Control key to clear the Map Offset.  
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Alarms Menu Tab  
From any view, press the MENU key twice to access the  
Main Menu System. The Alarms tab will be the default  
selection.  
NOTE: When an alarm is triggered, you can silence it by  
pressing any key. The alarm will be silenced, and will not be  
triggered again until a new instance of the alarm condition is  
detected.  
Alarms Menu  
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Depth Alarm  
Depth Alarm sounds when the depth becomes equal to  
or less than the menu setting.  
To change the Depth Alarm setting:  
1. Highlight Depth Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth Alarm  
setting. (OFF, 1 to 100 feet, or 0.5 to 30 meters [International Models Only],  
Default = OFF)  
Fish ID Alarm  
Fish ID Alarm sounds when the Fishing System  
detects fish that correspond to the alarm setting. Fish ID Alarm will only sound if Fish  
ID+TM is on.  
For example, if you've set the Fish ID Alarm to sound for Large fish only,  
the Fish ID alarm will sound when a large-sized fish is detected.  
To change the Fish ID Alarm setting:  
1. Highlight Fish ID Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID Alarm  
setting. (Off, All, Large/Medium, Large, Default = Off)  
Off  
Large  
Large/Medium  
All  
71  
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Low Battery Alarm  
Low Battery Alarm sounds when the input battery  
voltage is equal to or less than the menu setting. The battery alarm will only sound  
for the battery that is connected to the 300 SeriesTM Fishing System. The Low  
Battery Alarm should be set to warn you when the battery voltage drops below the  
safety margin that you have determined. For instance, if you are running a trolling  
motor (battery operated), you would want to set the Low Battery Alarm to sound  
before the battery voltage drops too low for it to be used to start your main,  
gasoline-powered engine.  
To change the Low Battery Alarm setting:  
1. Highlight Low Battery Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Low Battery  
Alarm setting. (Off, 8.5V - 13.5V, Default = Off)  
Temp Alarm  
Temp Alarm sounds when the water temperature  
detected by the 300 SeriesTM reaches the Temp Alarm setting, which is either set in  
degrees Fahrenheit or Celsius [International Models only]. For example, if the Temp  
Alarm is set to 58 degrees Fahrenheit, and the water temperature falls from 60 degrees  
to 58 degrees, the Temp Alarm will sound. Similarly, if the water temperature rises from  
56 degrees to 58 degrees, the Temp Alarm will also sound.  
To change the Temp Alarm setting:  
1. Highlight Temp Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-Way Cursor Control keys to change the Temp Alarm  
setting. (Off, 33-120 [Fahrenheit], 0-50 [Celsius], Default = Off)  
72  
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Off Course Alarm  
Off Course Alarm sounds when the boat has moved  
too far off course based on the menu setting when navigating. Off Course Alarm  
allows you to set how far the boat is allowed to move off course before the Off  
Course Alarm will sound.  
Off Course Limits  
Arrival Alarm Circle  
To change the Off Course Alarm setting:  
1. Highlight Off Course Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Off Course Alarm  
setting. (Off, 25 to 3000 feet, 10 to 1000 meters [International Models only],  
Default = 300 ft, 100 m)  
Arrival Alarm  
Arrival Alarm sounds when the boat has either  
exceeded the distance to the destination waypoint, or has entered the Arrival Alarm  
Circle, based on the menu setting when navigating. Arrival Alarm allows you to set how  
close the boat must be to the destination waypoint before the Arrival Alarm will sound.  
To change the Arrival Alarm setting:  
1. Highlight Arrival Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Arrival Alarm  
setting. (Off, 25 to 3000 feet, 10 to 1000 meters [International Models only],  
Default = 150 ft, 50 m)  
73  
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Drift Alarm  
Drift Alarm sounds when the boat has exceeded the  
distance from the boat’s anchored position, based on the menu setting. Drift Alarm  
allows you to set the size of a perimeter around the boat’s anchored position; if the  
anchored boat drifts outside of that perimeter, the Drift Alarm will sound.  
Drift Alarm Circle  
Drift Alarm Perimeter  
To change the Drift Alarm setting:  
1. Highlight Drift Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Drift Alarm  
setting. (Off, 25 to 3000 feet, 10 to 1000 meters [International Models only],  
Default = Off)  
Alarm Tone  
Alarm Tone selects the pitch of the alarm sound. A brief  
tone will be produced as you adjust the Alarm Tone so that you can select the tone that  
you can hear best.  
To change the Alarm Tone setting:  
1. Highlight Alarm Tone on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Alarm Tone  
setting. (High, Medium, Low, Default = Medium)  
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Setup Menu Tab  
From any view, press the MENU key twice to access the  
tabbed Main Menu System, then press the RIGHT cursor  
key until the Setup tab is selected.  
NOTE: Menu choices will vary depending on system settings  
such as whether the unit is set for Advanced User mode and  
what accessories are attached to the unit.  
Setup Menu Tab  
75  
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Units - Depth  
Units - Depth selects the units of measure for all depth-  
related readouts.  
To change the Units - Depth setting:  
1. Highlight Units - Depth on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Depth  
setting. (Meters [International Models only], Feet, Fathoms; Default is Meters  
for International models, and Feet for Domestic models)  
Units - Temp  
(International only)  
Units - Temp selects the units of measure for all temperature-related readouts.  
International Models only.  
To change the Units - Temp setting:  
1. Highlight Units - Temp on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Temp  
setting. (Celsius, Fahrenheit; Default = Celsius)  
Units - Distance  
Units - Distance selects the units of measure for all  
distance-related readouts, and will appear in the menu if a Temp/Speed Accessory is  
connected and the paddlewheel has moved at least once, or if the GPS Receiver is  
connected.  
To change the Units - Distance setting:  
1. Highlight Units - Distance on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Distance  
setting. (Domestic Models: Statute Miles, Nautical Miles; Default = Statute  
Miles; International Models: Meters/Kilometers, Meters/Nautical Miles,  
Feet/Statute Miles, Feet/Nautical Miles; Default = Meters/Kilometers)  
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Units - Speed  
Units - Speed selects the units of measure for speed-related  
readouts, and will appear in the menu if a Temp/Speed Accessory is connected and the  
paddlewheel has moved at least once, or if the GPS Receiver is connected.  
To change the Units - Speed setting:  
1. Highlight Units - Speed on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Speed  
setting. (kph [International Models only], mph, kts, Default = kph for  
International models and mph for Domestic models)  
User Mode  
User Mode sets the menu system to either Normal or  
Advanced. When set to Normal (default setting,) only the basic menu options are  
shown. When set to Advanced, additional menu choices are available.  
To change the User Mode setting:  
1. Highlight User Mode on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the User Mode  
setting. (Normal, Advanced, Default = Normal)  
Language  
(International only)  
Language selects the display language for menus. International Models only.  
To change the Language setting:  
1. Highlight Language on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Language  
setting. (Default = English)  
77  
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Triplog Reset  
Triplog Reset resets the Triplog to zero, and will appear in  
the menu if a Temp/Speed Accessory is connected and the  
paddlewheel has moved at least once, or if the GPS Receiver is connected. The Triplog  
provides the following information: timer for elapsed time, distance traveled since last  
reset, and average speed.  
NOTE: See Setup Menu Tab: Select Readouts (Advanced) to find out how to display Triplog  
information on the screen.  
To Reset Triplog:  
1. Highlight Reset Triplog on the Setup menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate Triplog Reset.  
3. The Confirm dialog box will appear. To reset the Triplog, press the RIGHT Cursor  
key once more. To cancel Reset Triplog, press the LEFT Cursor key.  
Restore Defaults  
Restore Defaults resets ALL menu settings to their factory  
defaults. Use this menu choice with caution!  
To Restore Defaults:  
1. Highlight Restore Defaults on the Setup menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate restoring defaults.  
3. The Confirm dialog box will appear. To reset the defaults, press the RIGHT  
Cursor key once more. To cancel Restore Defaults, press the LEFT Cursor key.  
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Select Readouts  
(Advanced, Sonar view only)  
Select Readouts sets individual digital readouts  
on the Sonar View. This Advanced feature  
allows you to select what data will be displayed  
in each of 5 fixed-position data windows  
arranged around the left and bottom edges of  
the Sonar View screen, or whether a particular  
window will be turned off, displaying nothing in  
that area; you can access this menu choice only  
when in Advanced User Mode (see Setup Menu  
Tab: User Mode.)  
Select Readouts  
Data windows can display readouts from supported accessories such as Temp/Speed.  
Each data window can either be empty or contain one of the following:  
• Course  
Temperature  
• Time + Date  
• Triplog  
• Navigation  
• Position  
• Speed  
• Voltage.  
Customized Sonar View  
Default Sonar View  
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To Select Readouts:  
1. Make sure you are in Advanced User Mode, then highlight Select Readouts on  
the Setup main menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate this procedure.  
3. The Select Readouts submenu will appear, showing a list of all Readouts. Use  
the UP or DOWN Cursor keys to select a particular Readout position, then  
use the RIGHT or LEFT Cursor keys to change what will be displayed at that  
position. (Course, Navigation, Position, Off, Speed, Temperature, Time+Date,  
Triplog, Voltage)  
Depth Offset  
(Advanced)  
Depth Offset will adjust the digital depth readout to indicate depth from the waterline  
or boat's keel. Enter a positive vertical measurement from the transducer to the  
waterline to read the depth from the waterline. Enter a negative vertical measurement  
from the transducer to keel to read the depth from the keel. This menu choice is  
available only when in Advanced User Mode (see Setup Menu Tab: User Mode.)  
To change the Depth Offset setting:  
1. Make sure you are in Advanced User Mode, then highlight Depth Offset on the  
Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth Offset setting.  
(-10.0 to +10.0 feet or -3 to 3 meters [International Models only], Default = 0)  
Temp Offset  
(Advanced)  
Temp Offset will adjust the temperature readout by the amount entered. This menu  
choice is available only when in Advanced User Mode (see Setup Menu Tab: User Mode.)  
To change the Temp Offset setting:  
1. Make sure you are in Advanced User Mode, then highlight Temp Offset on the  
Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Temp Offset  
setting. (-10.0 to +10.0 degrees, Default = 0)  
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Speed Calibration  
(Advanced, with Temp/Speed only)  
Speed Calibration will adjust the speed readout by the percentage entered, and will  
appear in the menu if a Temp/Speed Accessory is connected and the paddlewheel  
has moved at least once, when the unit is in Advanced User Mode (see Setup Menu  
Tab: User Mode.)  
To change the Speed Calibration setting:  
1. Make sure you are in Advanced User Mode, then highlight Speed Calibration on  
the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Speed  
Calibration setting. (-20% to +20%, Default = 0%)  
Local Time Zone  
(Advanced)  
Local Time Zone selects your time zone in reference to the time reported by the GPS  
receiver when Time+Date is selected as a Digital Readout on the Sonar View (see Select  
Readouts). This menu choice is available only when in Advanced User Mode (see Setup  
Menu Tab: User Mode).  
To change the Local Time Zone:  
1. Make sure you are in Advanced User Mode, then highlight Local Time Zone on  
the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Local Time Zone  
(Default = EST [UTC-5] - Eastern Standard Time).  
81  
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Daylight Saving Time  
(Advanced)  
Daylight Saving Time adjusts the time display to account for local Daylight Saving Time  
when Time+Date is selected as a Digital Readout on the Sonar View (see Select  
Readouts). Selecting On adds one hour to the time display adjusted for your local  
time zone. Selecting Off leaves the time display as adjusted for your local time zone.  
This menu choice is available only when in Advanced User Mode (see Setup Menu  
Tab: User Mode).  
To change the Daylight Saving Time setting:  
1. Make sure you are in Advanced User Mode, then highlight Daylight Saving Time  
on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn Daylight Saving Time  
On or Off. (Off, On, Default = Off)  
Position Format  
(Advanced)  
Position Format selects the format of the latitude and longitude position display.  
This menu choice is available only when in Advanced User Mode (see Setup Menu  
Tab: User Mode).  
To change the Position Format setting:  
1. Make sure you are in Advanced User Mode, then highlight Position Format on  
the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Position Format.  
(dd.ddddd°, dd°mm.mmm', or dd°mm'ss", Default = dd°mm.mmm')  
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Time Format  
(Advanced, International only)  
Time Format changes the time format used by the unit This menu choice is available  
only when in Advanced User Mode (see Setup Menu Tab: User Mode). International  
Models only. Time Format selects a 12 hour or 24 hour format for the time of day  
displayed when Time + Date is selected as a Digital Readout on the Sonar View (see  
Select Readouts).  
To change the Time Format:  
1. Make sure you are in Advanced User Mode, then highlight Time Format on the  
Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Time Format. (12  
hour, 24 hour, Default = 12 hour)  
Date Format  
(Advanced, International only)  
Date Format changes the date format used by the unit This menu choice is available  
only when in Advanced User Mode (see Setup Menu Tab: User Mode). International  
Models only. Date Format selects the format for the date display when Time + Date is  
selected as a Digital Readout on the Sonar View (see Select Readouts).  
To change the Date Format:  
1. Make sure you are in Advanced User Mode, then highlight Date Format on the  
Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Date Format.  
(mm/dd/yy, dd.mm.yy or yy.mm.dd, Default = mm/dd/yy)  
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NMEA Output  
(Advanced)  
NMEA Output turns the NMEA* output on or off. This menu choice is available only  
when in Advanced User Mode (see Setup Menu Tab: User Mode.) NMEA Output should  
be turned On if you connect the NMEA Output wires of the GPS Receiver cable to  
another NMEA-compatible device, such as an autopilot.  
*NMEA 0183 is a National Marine Electronics Association standard for data communication.  
The following NMEA sentences are output when NMEA Output is turned On:  
DPT- Depth  
MTW - Water Temperature  
GLL - Lat/Lon Position  
GGA - GPS Fix Data  
RMC - Recommended Minimum Specific GNSS Data  
VTG - Course Over Ground and Ground Speed  
ZDA - Time and Date  
When navigating, the following NMEA sentences are also output when NMEA Output  
is turned On:  
APB - Autopilot Sentence B  
BWR - Bearing and Distance to Waypoint  
RMB - Recommended Minimum Navigation Info  
To turn NMEA Output on or off:  
1. Make sure you are in Advanced User Mode, then highlight NMEA Output on the  
Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the NMEA Output  
to On or Off (Off, On, Default = Off).  
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Sonar  
Sonar deactivates Sonar and removes the Sonar Views  
from the view rotation. (Off, On, Default = On)  
To turn Sonar on or off:  
1. Highlight Sonar on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Sonar to On or  
Off (Off, On, Default = On).  
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Views Menu Tab  
From any view, press the MENU key twice to access the  
tabbed Main Menu System, then press the RIGHT 4-WAY  
Cursor Control key until the Views tab is selected. This  
menu tab allows you to set the available views to either  
hidden or visible in the view rotation. The view will be  
removed from the view rotation if it is set to Hidden and  
will be displayed in the view rotation if it is set to Visible.  
The following views are available:  
• Bird’s Eye View  
• Chart View  
• Combo View  
• Sonar View  
• Sonar Zoom View  
• 200/83 kHz Split Sonar View  
• Big Digits View  
• Circular Flasher View  
• Self Test  
Views Menu  
• Accessory Test  
• GPS Diagnostic View.  
To Change the View Status of Any View:  
1. Highlight the View main menu tab.  
2. Use the UP or DOWN 4-WAY Cursor Control keys to select a View.  
3. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the status of the  
view from Hidden to Visible.  
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Troubleshooting  
Before contacting the Humminbird® Customer Resource Center, please read the  
following section. Taking the time to review these troubleshooting guidelines may allow  
you to solve a performance problem yourself, and therefore avoid sending your unit  
back for repair.  
300 SeriesTM Doesn’t Power Up  
If your 300 SeriesTM Fishing System doesn’t power up, use the Installation Guide that also  
comes with it for specific confirmation details, making sure that:  
• The power cable is properly connected to the 300 SeriesTM Fishing System  
control head.  
• The power cable is wired correctly, with red to positive battery terminal and  
black to negative terminal or ground.  
• The fuse is operational.  
• The battery voltage of the power connector is at least 10 Volts.  
Correct any known problems, including removing corrosion from the battery terminals  
or wiring, or actually replacing the battery if necessary.  
300 SeriesTM Defaults to Simulator with a Transducer Attached  
A connected and functioning transducer will cause the newly-started 300 SeriesTM  
Fishing System to go into Normal operating mode automatically. If, when you power up  
the 300 SeriesTM Fishing System, it goes into Simulator mode automatically, even though  
a transducer is already connected, this means that the control head is not detecting the  
transducer. Perform the following troubleshooting tasks:  
• Using the Installation Guide that also comes with your 300 SeriesTM Fishing  
System, check to make sure that the transducer cable is securely connected to  
the 300 SeriesTM Fishing System. Reconnect if necessary, and power up the 300  
SeriesTM Fishing System again to see if this fixes the problem.  
• Replace the non-functioning transducer with a known good transducer if  
available and power up the control head again.  
• Check the transducer cable. Replace the transducer if the cable is damaged or  
corroded.  
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Display Problems  
There are several main conditions or sources of possible interference that may cause  
problems with the quality of the information displayed on the control head. Look in the  
following table for some symptoms of display problems and possible solutions:  
Problem  
Possible Cause  
The control head loses  
power at high speeds.  
If the power output of your boat’s engine is  
unregulated, the control head may be protecting itself  
using its over-voltage protection feature. Make sure  
the input voltage does not exceed 20 Volts.  
When the boat  
moves at higher  
speeds, the bottom  
disappears or suddenly  
weakens, or the display  
contains gaps.  
The transducer position may need to be adjusted. A  
mix of air and water flowing around the transducer  
(cavitation) may be interfering with the interpretation  
of sonar data. See your Installation Guide for  
suggestions on adjusting the transducer position.  
Electrical noise from the boat’s engine may be  
interfering with sonar reception. See Finding the Cause  
of Noise for more information.  
There are no fish  
detected, even when  
you know they are in  
the water under the  
boat, or sonar readings  
seem weak  
Sonar readings may be affected if the transducer is not  
positioned correctly (i.e. mounted at an angle, not  
straight down), or there is some kind of mechanical  
interference, either because it is mounted inside a hull  
that is too thick for proper sonar transmission, the  
bond between the transducer and the hull is not  
airtight, or because the transducer is dirty. Check with  
your Installation Guide for guidance on re-positioning  
the transducer, and make sure the transducer is clean.  
or faulty.  
Low battery voltage may be affecting the power of  
signal transmission.  
Electrical noise from the boat’s engine may be  
interfering with sonar reception. See Finding the Cause  
of Noise for more information.  
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Finding the Cause of Noise  
Electrical noise usually affects the display with many black dots at high speeds, and high  
sensitivity readings. One or more of the following sources can cause noise or  
interference:  
Possible Source of Noise  
Other electronic devices  
Isolation  
Turn off any nearby electronic devices to see if the  
problem goes away, then turn them on one at a  
time to see if the noise re-appears.  
The boat’s engine  
To determine whether the boat’s engine is the  
source of the noise, increase the RPMs while the  
boat is in neutral and stationary to see if the noise  
increases proportionately; if noise appears when  
you rev the engine, the problem could be the  
spark plugs, alternator, or tachometer wiring.  
Replace the spark plugs with resistor plugs, install  
an alternator filter, or route the control head  
power and transducer cables away from the  
engine wiring.  
Cavitation from the  
boat’s propeller  
Turbulence created by the propeller can cause  
noise; make sure the transducer is mounted at  
least 15” (38 cm) from the propeller, and that the  
water flows smoothly over the face of the  
transducer at all times.  
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Specifications  
Depth Capability .......................................................................................... 1000 ft (330 m)  
Power Output ........................................ 300 Watts (RMS), 2400 Watts (Peak to Peak)  
Operating Frequency........................................ 200 kHz and 83 kHz DualBeam PLUSTM  
Area of Coverage ............................................................................ 60° @ -10 dB in 83 kHz  
20° @ -10 dB in 200 kHz  
Target Separation .......................................................................... 2 1/2 Inches (63.5 mm)  
Power Requirement .............................................................................................. 10-20 VDC  
LCD .................................................................................................................... 320 V x 240 H  
Transducer.............................................................................................................. XHS-9-20-T  
Transducer Cable Length .................................................................................... 20 ft (6 m)  
Current Draw........................................................................................................0.383 Amps  
NOTE: Humminbird® verifies maximum stated depth in saltwater conditions, but actual  
depth performance may vary due to transducer installation, water type, thermal layers,  
bottom composition and slope.  
NOTE: Product specifications and features are subject to change without notice.  
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Glossary  
Sonar Terms:  
Alarm, Depth: Depth Alarm is a user-controllable, audible alert that sounds when  
depth is less than or equal to the setting.  
Alarm, Temperature: Temperature Alarm is a user-controllable, audible alert that  
sounds when the water surface temperature equals the setting.  
Backlight: Backlight is a user-controllable illumination for the LCD for night and low  
light use.  
Beam (Sonar Beam): A sonar beam is the wide, cone-shaped projection of sound  
waves formed as sound travels underwater. See Cone Angle.  
Big Digits View: Big Digits View is a Humminbird® feature that displays the sonar  
graph and enlarged digital readouts for easy reading from a distance. This is a great  
tool when monitoring the digital depth is important - such as with higher boat  
speeds, or when viewing the unit from a distance. When speed input is available, the  
Big Digits View also shows the TripLog. See TripLog.  
Bottom Black: Bottom Black is a Humminbird® feature that "fills in" the area of the  
display below the bottom contour. Bottom Black is preferred by some anglers  
because of its high contrast and easy readability, even though it can obscure bottom  
hardness information.  
Bottom Contour: Bottom Contour is the profile of the bottom graphed to the display  
as the depth changes.  
Bottom Hardness: Bottom Hardness is the density (or composition) of the bottom,  
which can often be determined by interpreting the main sonar return. Varying levels  
of hardness can be determined by interpreting the "thickness" of the sonar return.  
Hard returns appear thin and black, softer returns appear thicker and less black. It is  
important to note that a sonar return from a sloping bottom can have the  
appearance of a softer bottom.  
Cavitation: Cavitation is the effect of air bubbles created as the propeller rotates and  
the boat moves through the water.  
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Chart Speed: Chart Speed is a user-controllable feature that sets the speed at which  
sonar information moves across the display. A faster setting displays sonar information  
from more pings and shows more detail, but the information moves quickly across the  
display: a slower setting permits viewing of more sonar history, but does not display as  
much detail. The best setting is often the user's personal choice.  
Cone Angle: The cone angle is the angular measurement of the sonar beam at a  
specific dB down point (i.e. -10 dB). See dB Down Point.  
Customizable Digital Readouts: Customizable Digital Readouts is a Humminbird®  
feature that permits the user to select the specific digital information that appears  
in the main Sonar view (i.e. Speed, Temperature, Barometric Pressure, TripLog, etc.)  
Dead Zone: The dead zone is the area of the sonar beam that receives the sonar  
signal after the main bottom return. Fish and other objects close to the bottom that  
fall within the dead zone will probably not be visible in the sonar beam. Precision  
sonar beams, such as the Humminbird® 20° beam, have a smaller dead zone than  
wider sonar beams.  
Decibel: A Decibel is the measurement for sound pressure level, or "intensity" of the  
sonar return. See dB Down Point.  
dB Down Point: The dB Down Point is the standard decibel level at which the sonar  
cone angle is measured, and is written as "@ -10 dB" or "@ -3 dB". Measurements at  
smaller down points (bigger negative numbers) indicate that the less intensive  
sonar signals are being used for the measurement.  
Display, FSTN: FSTN is an acronym for Film Super-Twist Nematic. FSTN is a  
monochrome display technology characterized by black, high-contrast pixels. All  
monochrome fixed mount Humminbird® products use FSTN technology.  
DualBeam PLUSTM: DualBeam PLUSTM is a Humminbird® sonar configuration that  
uses two sonar beams simultaneously, and combines the information from both  
beams into one view by overlapping the data on-screen, or shows each beam  
individually side by side, or permits each beam to be viewed individually full screen.  
Feature Memory: Feature Memory is a Humminbird® feature that retains the user's  
menu settings in permanent memory. Settings are retained even when the unit is  
powered off indefinitely.  
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Fish Arch: A Fish Arch is the apparent "arch" that appears on the display when any  
object moves through the sonar cone. The arch results from a gradual decrease in  
distance to an object as it moves into the sonar cone. The distance to an object  
changes due to the conical shape of the sonar beam, which causes the distance to be  
greater at the edges of the beam than at the center of the beam. When this distance  
change is graphed on the display, an arch appears.  
Fish ID+TM: Fish ID+TM is a Humminbird® feature that uses advanced sonar processing  
algorithms to determine if a detected object is likely to be a fish. When the sonar  
signal from an object meets strict parameters, the unit draws a Fish Symbol (or icon)  
and the digital depth of the target. On DualBeam and DualBeam PLUSTM units, fish  
detected in the narrow center beam are shown as shaded symbols, and fish detected  
in the wider beam are shown as hollow symbols.  
Fish Symbol: A Fish Symbol is the graphic that is displayed on the screen when Fish  
ID+ determines that a sonar return is likely to be a fish. See Fish ID+TM.  
Freeze Frame: Freeze Frame is a Humminbird® feature that pauses the sonar  
scrolling so that the image on screen can be studied with greater detail. See Instant  
Image Update.  
Frequency: Frequency is a measure of the number of sound wave cycles per second  
of a sound impulse transmitted underwater. A typical frequency for fishfinders is  
200 kHz, which offers a good balance of performance under many conditions. Lower  
frequencies, such as 50 kHz, are capable of penetrating to greater depths, but with  
less resolution. Higher frequencies, such as 455 kHz, offer greater resolution, but are  
limited in depth performance. Humminbird® uses a variety of frequencies that are  
optimized for specific applications.  
Grayscale: Grayscale is the use of varying shades of gray to represent the strength  
of the sonar signal on the display , and is a very intuitive method of presenting  
information. Traditionally, the strongest sonar signals are represented in black, and  
progressively weaker signals are represented in progressively lighter shades of gray.  
Grayscale, Inverse: Inverse Grayscale is a Humminbird® feature that reverses the  
correlation of sonar signal strength and the shade of gray typically used to represent  
it. The strongest sonar signals are represented by "white", and progressively weaker  
signals are represented in progressively darker shades of gray. While somewhat  
counter-intuitive, this method makes the sonar images crisper, and has the benefit  
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of enhancing the apparent sensitivity because the weaker signals appear bolder.  
Inverse grayscale works well in very clear water. Debris-laden water often appears as  
a lot of clutter on the screen.  
Instant Image Update: Instant Image Update is a Humminbird® feature that  
updates all the sonar information on the display when Sensitivity and a variety of  
sonar settings (Bottom View, Range, etc.) are modified. This differs from the  
traditional functionality that only updates the new sonar information collected after  
the setting change. Instant Image Update permits more accurate fine-tuning of the  
display because the user can see the results on the complete sonar graph. When  
combined with the Freeze Frame feature, the user can adjust and understand the  
effects of many different sonar settings quickly and easily.  
Maximum Depth Menu: The Maximum Depth Menu is a Humminbird® feature that  
optimizes performance based on the maximum operational depth set by the user. Many  
Humminbird® units can operate across a very broad depth range (up to 2500 feet) which  
causes the unit to "look" up to that full depth under some circumstances. Due to the speed  
of sound in water, this can result in less responsiveness because the unit has to wait for a  
longer period of time to receive the sonar signal. When the Maximum Depth menu is set  
to a lower value, the unit only looks up to the setting, which increases the responsiveness  
of the unit. This is an important feature for anyone operating in shallower depths!  
Noise: Noise is unintentional, external sound waves that interfere with the optimal  
operation of sonar. Noise appears as random "dots" on the display, and is caused by a  
variety of sources. Electrical noise (from trolling motors, bilge pumps, VHF radios)  
typically manifests as a consistent dot pattern. Electrical noise can be isolated by  
selectively turning on and off other electrical devices to determine the source. Often re-  
routing the power cable, or connecting to an alternative power supply (second battery)  
can help overcome electrical noise. Hydrodynamic noise (from propeller and/or hull  
cavitation) has a more random appearance and is generally related to boat speed, so  
that faster operation results in more noise. Hydrodynamic noise can be overcome by  
proper transducer installation. Many Humminbird® products have a Noise Filter menu  
setting that allows the user to clear the screen of noise that is difficult to eliminate.  
Pixels: Pixels are the "picture elements", or small square blocks, that make up the  
image on the LCD. Measured as a vertical by horizontal number (i.e. 640 V x 320 H),  
this key specification typically indicates the quality of resolution. In fishfinders, the  
total resolution (vertical multiplied by horizontal) is often less important than the  
"Vertical Pixel" resolution. See Pixels, Vertical.  
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Pixels, Vertical: Vertical Pixels are a number of vertical picture elements in a single  
column on an LCD display. A greater number of vertical pixels provide finer  
resolution of targets detected by sonar. Essentially, a vertical distance (the depth),  
when divided by a larger number, breaks that distance into smaller samples, each  
representing a smaller area and thus providing more detail. In fishfinders, vertical  
pixels are more critical than horizontal pixels because the horizontal axis of the  
display represents time, or history. Sonar information on the horizontal axis can vary  
greatly, depending on boat speed and the Chart Speed setting. A greater number of  
horizontal pixels show more sonar history that the boat has passed through. On  
many models, Humminbird® provides the most vertical pixels to provide a better  
display resolution. See Chart Speed and Pixels.  
Power Output: Power output is the amount of sound energy emitted into the water  
by the sonar transmitter. Power output is measured using either RMS (Root Mean  
Square) or P-T-P (Peak-to-Peak) measurement systems. Either method is acceptable,  
but it is important, when comparing power outputs, to make sure that the same  
measurement system is being used for both outputs, because P-T-P numbers are 8  
times higher than RMS numbers. Greater power output allows the sonar signal to  
penetrate through weeds and thermoclines, reach deeper depths and operate more  
effectively in noisy environments, such as when the boat is running at high speed.  
Pulse Width (Pulse Length): Pulse Width is the length of time that a sonar sound  
burst is transmitted into the water. Shorter pulse widths provide better target  
separation, but cannot travel to great depths. Longer pulse widths provide better  
depth penetration, but result in poorer target separation. Humminbird® varies pulse  
width based on depth to optimize both target separation and depth performance.  
See Target Separation.  
QuadraBeamTM: QuadraBeamTM is a Humminbird® sonar configuration that uses four  
sonar beams for a more detailed bottom image. QuadraBeamTM uses the DualBeam  
PLUSTM configuration for downlooking, and also adds two additional beams to look  
to the left and right. The sonar beams pointing to the left and right provide the  
ability to spot fish and structure over a wide 90° area, and to identify on which side  
of the boat they are located. See DualBeam PLUSTM.  
Quick Disconnect Mount: The Quick Disconnect Mounting system is an exclusive  
Humminbird® feature that permits the unit to be easily removed from the mounting  
base by pressing a release button, and re-installed by simply snapping it back into  
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place. All cable connections are made when installing, so that no separate wiring  
connections are required. Additionally, the mount offers 90° tilt and 360° swivel  
capability to adjust the viewing angle of the unit as you move about the boat.  
Real Time Sonar: Real Time Sonar is a Humminbird® technology that delivers ultra-  
fast sonar transmitter/receiver operation and results in a more detailed  
instantaneous view of what is under the boat. The Real Time Sonar window is a  
vertical band at the right side of the display that shows the instantaneous sonar  
return from the transducer at a particular instant. The RTS® Window menu option  
permits the user to adjust the window to show the full sonar signal return, or just a  
narrower band that indicates intensity using grayscale. Real Time Sonar relies on  
very fast Sonar Update Rate (Ping Speed). See Sonar Update Rate.  
Receiver: See Transmitter.  
Second Return: The Second Return is a term that describes the appearance of a  
second sonar return below the primary sonar return (bottom contour) at exactly  
twice the true depth. The second return is caused by the same sonar energy  
bouncing off the bottom once, rebounding to the water surface and then traveling  
back down to the bottom to be reflected again. Second returns are more common in  
shallow water and over hard bottoms; it is actually possible to see a third sonar  
return under some circumstances. The second return provides useful information to  
help determine bottom hardness, as areas with harder bottoms will generally create  
a second return. The second return can be used as a guide to set Sensitivity when in  
shallower water.  
Sensitivity: Sensitivity is a user feature that adjusts the sensitivity of the sonar  
system to show more or less detail in the water. Higher sensitivities are often  
preferred, however, when the water contains debris (silt, storm debris, etc.) and it  
can be difficult to pick out targets. Conversely, if sensitivity is set too low, relevant  
targets may be missed.  
SONAR: SONAR is the acronym for SOund and NAvigation Ranging. Sonar  
technology uses precision sound bursts transmitted underwater to determine the  
distance and other attributes of objects in the water. Distance can be determined  
because the speed of sound in water is constant, and the time for the signal to  
return is measured. Sound also travels very quickly underwater, making sonar a  
responsive, cost-effective tool. Sonar is the basic technology behind all recreational  
and commercial fishfinding and depthfinding devices.  
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Sonar Echo Enhancement: Sonar Echo Enhancement is a Humminbird® feature that  
describes the high degree of sonar sensitivity achieved through a combination of  
transmitter/receiver and software algorithms. The result of Sonar Echo Enhancement  
is to display virtually everything in the water that is of interest to the angler, including  
bait fish, game fish, thermoclines, weed beds, subtle structure, and more.  
Sonar Update Rate: Sonar Update Rate is the number of times per second that the  
transmitter/receiver sends and receives sonar signals. A very fast sonar update rate  
collects more information and provides a more detailed image of the bottom, fish  
and structure. Many Humminbird® units operate at up to 40 times per second when  
in single frequency operation. Due to the limitation of the speed of sound in water,  
the update rate begins to slow as depth increases to deeper than 50 feet. In very  
shallow water (less than 10 feet), however, update rates as much as 60 times per  
second can be achieved.  
Speed: Speed is the rate at which the boat moves through the water. Boat speed can  
be measured as Speed Over Ground or Speed Through Water. Speed Over Ground is  
provided by GPS, and is the measurement of the boats progress across a given distance.  
Speed Through Water is provided by a speed paddlewheel, and is the measurement of  
the flow past the boat, which may vary depending on current speed and direction.  
Speed Through Water is most critical for anglers using downriggers, as it impacts the  
running depth of the down riggers. Speed Over Ground is optimal for navigation, as  
accurate destination times can be derived from this measurement. Humminbird®  
products allow for input and display of both sources.  
Structure: Structure is a general term for objects on the bottom that present a  
discontinuity and are a likely attractor for fish. This includes bottom contour features  
(drop-offs, humps, and holes), standing structure (stumps, timbers, brush piles) and  
a wide range of other potential objects (sunken boats, reefs). Humminbird® units  
excel at showing structure with great detail over a wider area due to unique sonar  
configurations developed for the angler.  
Structure ID®: Structure ID® is a Humminbird® feature that describes the traditional  
grayscale method of presenting sonar information. See Grayscale.  
Surface Clutter: Surface Clutter is a phenomenon where sonar returns are reflected  
off of tiny objects near the surface of the water, including algae and even air  
bubbles. Typically, saltwater environments have significantly greater surface clutter  
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than freshwater due to continuous wind and wave action that causes aeration at the  
surface. The Surface Clutter menu provides manual control to bias the default  
settings under extreme conditions.  
Target Separation: Target Separation is the measurement of minimum distance that  
a fishfinder needs to be able to recognize two very close objects as two distinct  
targets (i.e. two fish hanging very close, or a fish hanging very close to structure).  
Humminbird® fishfinders provide a very good 2 1/2 inches of target separation in  
shallower than 100 feet of depth. Target separation decreases as depth increases  
due to the need for longer Pulse Width to achieve greater depth. See Pulse Width.  
Thermoclines: Thermoclines are water layer(s) of distinctly different temperatures  
that create a sonar reflection due to the density of the differing water temperatures.  
Typically a thermocline will appear as a continuous band across the display at some  
distance above the bottom contour. Thermoclines are of interest to anglers because  
fish will suspend above or below the thermocline as they seek the optimum  
temperature and oxygen levels.  
Time Variable Gain: Time Variable Gain is a processing step applied to the sonar  
return to "normalize" the data so that objects of equal size (i.e. fish) appear to be the  
same size, even if they are separated by a good distance. Time Variable Gain is a  
fundamental attribute of good sonar, but is often promoted as a feature.  
Total Screen Update®: A Humminbird® feature that refreshes and updates all the sonar  
information on the display when a range change occurs. Without Total Screen Update®,  
only the most recent sonar information would be drawn to the new range, and the old  
sonar information would continue to scroll off the screen at the old range.  
Transducer: The transducer is part of the sonar system, which mounts on the boat  
and is in contact with the water, that converts the electrical energy from the  
transmitter into sound energy, and that forms the sonar beam in turn. Internally, the  
transducer consists of one or more piezo electric disks that expand by very minute  
amounts to create the sound wave. This element also works in reverse, converting  
the returned sound energy back into an electrical signal that the receiver interprets.  
Transducers are available for many specific mounting applications for the boat, such  
as a transom mount, trolling motor mount, etc. Humminbird® offers many  
sophisticated transducers, often with multiple piezo electric elements designed to  
form specifically-shaped sonar beams, providing the angler with superior tools for  
finding and catching fish. See Transmitter and SONAR.  
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Transmitter: The transmitter and receiver are matched parts of the sonar system that  
send (transmit) and listen to (receive) the sonar signals, and work in conjunction with  
the transducer. Humminbird® transmitters have an extremely fast cycling design that  
can send signals up to 60 times per second, as well as produce the varying levels of  
power output needed for different depths and conditions. Additionally, the transmitter  
has the capability to create very precise sonar pulses needed for a high degree of target  
separation. Humminbird® receivers are extremely sensitive, but within a narrow  
"bandwidth" to discriminate against noise from external sources. Additionally, the  
receiver offers a wide "dynamic range" which provides the ability to receive very strong  
signals alternating with very weak signals, without the strong signal overwhelming the  
weak signal. See Transducer and Noise.  
TripLog: TripLog is a Humminbird® feature that provides an on-screen counter for  
Elapsed Time, Average Speed and Total Distance traveled, and requires a speed input  
to activate the feature. TripLog appears on the Big Digits View, and can be reset to  
zero through the TripLog menu.  
TrueArch®: TrueArch® is a Humminbird® feature that provides true fish arches, not  
artificial arches or symbols. Humminbird® units are capable of producing fish arches  
due to the wide 60° sonar beam of DualBeam PLUSTM, an extremely sensitive sonar  
receiver. See Fish Arch.  
Viewing Angle: Viewing Angle is an attribute of an LCD that characterizes visibility  
of the display when viewing from off the central access, such as when standing to  
the side of the fishfinder. Wider viewing angles are better because the information  
remains visible even when viewing from the side.  
WhiteLine®: WhiteLine® is a Humminbird® feature that highlights the strongest  
sonar return on the display using a very light gray band. This is preferred by some  
anglers who have grown accustomed to the feature on paper graph chart recorders.  
WideSide®: WideSide® is a Humminbird® sonar configuration used in an optional  
transducer. WideSide® uses three sonar beams pointing to the left, right and down.  
Beams pointing to the left and right are effective for spotting fish and structure near  
the surface or on the bank. The downlooking beam provides depth information  
directly below the boat.  
X-PressTM Menu: X-PressTM Menus are a Humminbird® feature that make the most  
commonly-used menu selections available with one press of the MENU key. Items that  
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appear on the X-PressTM Menu are related to the current view, and present the most  
logical choices for that view. Sonar View X-PressTM menus will differ from Chart View  
X-PressTM menus, etc. X-PressTM menus are one of the principal reasons that  
Humminbird® products are easier to use.  
Zoom: Zoom is a feature that focuses in on a smaller area of the bottom to provide  
enhanced resolution. With enhanced resolution, the angler can more easily see fish  
hanging in structure or multiple fish hanging close together. Split screen zoom divides  
the display into the full range view on the right, and the zoomed view on the left.  
Humminbird® offers One-Touch® Zoom which allows the zoom feature to be easily  
accessed from the regular sonar view with just one key press, eliminating the need to  
use menus to access the feature.  
Zoom, Bottom Lock: Bottom Lock Zoom is a feature that focuses on a smaller area just  
above the bottom to provide enhanced resolution. Unlike regular zoom, it continuously  
graphs the bottom at a constant point on the display regardless of changes in depth.  
This "flattens" out the bottom contour, but is effective at showing fish on or near the  
bottom, and is preferred by many saltwater anglers.  
GPS & Navigation Terms:  
Acquisition Time: The length of time that a GPS receiver typically takes to determine a  
position from at least three satellites. Humminbird® GPS receivers provide very fast  
acquisition times (under one minute), permitting users to get out on the water faster.  
Alarm, Arrival: The audible alert that sounds when the boat is equal to or less than the  
alarm setting (25 feet–3000 feet) from the location of the destination waypoint.  
Alarm, Drift: Drift Alarm is an audible alert that sounds when the boat is equal to or over  
the alarm setting (25 feet–3000 feet) from the location where the alarm was turned on.  
Alarm, Off-Course: Off-Course Alarm is an audible alert that sounds when the boat’s  
distance from the intended Track, (Cross Track Error), is equal to or over the alarm setting  
(25 feet – 3000 feet). See Track and Cross Track Error.  
Altitude: Altitude measures height above sea level. Altitude is a measurement that can  
be provided by GPS.  
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Bearing (BRG): Bearing is the direction to a destination waypoint measured in degrees  
from North (i.e. 321°, where 000° is North, 090° East, 180° is South, 270° is West).  
Chartplotter: Chartplotter describes a navigation device that shows Present Position  
on a Map, along with Tracks, Waypoints, and Routes. All Chartplotters are also  
considered Trackplotters. All Humminbird® GPS Combo units are Chartplotters. See  
Trackplotter.  
Cold Start: Cold Start refers to the procedure that a GPS receiver must perform when  
it does not have historical information regarding its current location. This procedure  
typically lasts for several minutes, and may be experienced upon first power up of  
the receiver, or if the receiver has been moved a great distance.  
Course Over Ground (COG): Course Over Ground is the current direction the boat is  
traveling measured in degrees from North (i.e. 321°, where 000° is North, 090° East,  
180° is South, 270° is West). When the Course Over Ground is equal to Bearing, the  
boat is said to be “On Course” and will arrive at the destination in the most efficient  
manner. COG is often confused with Heading. See Heading.  
Cross Track Error (XTE): Cross Track Error is the straight-line distance of the boat from  
the intended Track. XTE measures how far the boat is off course, and also triggers the  
Off Course Alarm. See Track.  
Differential GPS (DGPS): Differential GPS is a system to improve the position  
accuracy of the Department of Defense GPS through the use of secondary  
“correction signals” broadcast from ground stations around the coastal United  
States and on some inland waterways. These correction signals are provided by the  
USCG and received by an auxiliary Differential Beacon Receiver (DBR) that connects  
to the GPS receiver. The advent of WAAS has largely negated the need for the added  
expense of a DBR in the United States.  
Distance To Go: Distance To Go is the straight-line distance between Present  
Position and the Destination Waypoint. DTG and SOG (Speed Over Ground) are used  
to calculate Time To Go. See Time to Go and Speed Over Ground.  
Estimated Position Error (EPE): Estimated Position Error is a calculation that indicates  
the potential position inaccuracy the user may experience due to a variety of GPS factors  
which include satellite position in the sky, signal strength and others factors.  
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Fix Type: Fix Type indicates whether the GPS receiver is providing 2D fix or 3D fix. A  
2D fix requires only three satellites and provides only latitude and longitude. A 3D fix  
requires four or more satellites, and provides latitude, longitude and altitude.  
GPS: GPS is an acronym for Global Positioning System. GPS provides accurate  
position (latitude, longitude, altitude) information virtually anywhere on the earth  
through satellite technology and personal receivers on the ground. A series of  
geosynchronous satellites broadcast a unique signal toward the earth once per  
second. A GPS receiver, such as that included with many Humminbird® products,  
receives the signals from these satellites and is able to determine position based on  
very slight differences in the time each signal is received and the receiver’s  
knowledge of the location of each of the satellites.  
Heading: Heading describes the direction the boat is pointing and is measured in  
degrees (i.e. 321°, where 000° is North, 090° East, 180° is South, 270° is West). Due to  
wind and waves, the boat is often traveling in a slightly different direction than it is  
heading, and therefore Heading is often confused with Course Over Ground. See  
Course Over Ground.  
Map Datum: A Map Datum refers to a particular survey of the earth’s surface that  
was referenced when creating a chart (i.e. WGS84). Since the earth is not flat, and  
not even consistently round, a mathematical model must be used to translate  
coordinates from the sphere of the earth to the flat surface of a chart. This  
mathematical model is the Map Datum. Historically, many different Map Datums  
have been used around the world to create maps; often a reference to the Map  
Datum can be found in the legend of a paper map. It is important to select the  
correct Map Datum setting in your fishfinder when comparing GPS position to a  
paper chart to avoid slight position inaccuracies. Almost all electronic charts use the  
WGS84 Map Datum and therefore, they do not require setting changes.  
MMC: MMC is an acronym for Multi Media Card. An MMC is a postage stamp-sized  
memory device used to store electronic data such a maps, waypoints, routes and  
other information. MMC is a very rugged format suitable for the marine  
environment, but it is not waterproof. The MMC is removable from Humminbird®  
products, and can be used in a PC that is equipped with an appropriate card reader.  
MMC is the same format that many digital cameras use. See SD.  
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North, Magnetic: North is the principle reference point of the compass (i.e. North is  
000°). Magnetic North relies on the earth’s magnetic field to align a metal pointer  
generally towards True North. However, due to local variations in the earth’s  
magnetic field around the globe, the difference between True North and Magnetic  
North can be greater than 10°. See True North.  
North, True: North is the principle reference point of the compass (i.e. North is 000°).  
True North uses the axis of the rotation of the earth as the reference for North and  
is constant for all points on the earth. Most GPS units default to True North as the  
setting. The GPS heading may vary from the boat compass heading because the  
compass uses Magnetic North. Humminbird® GPS units provide the option of  
selecting True or Magnetic readouts by using the North Reference menu. See  
Magnetic North.  
Present Position: Present Position is the current location (latitude, longitude)  
determined by GPS. The Present Position is indicated on-screen by a directional boat  
icon if the boat is moving, or a round symbol if the boat is stationary.  
Route: A Route is series of waypoints linked together in a specific sequence to define a  
navigation path between two points, and saved in the fishfinder’s memory. Routes are  
often used when frequently traveling between two or more locations because it is a faster  
and more accurate method than repeatedly selecting individual waypoints each time one  
travels through the same area. Routes consist of a Start Waypoint, an End Waypoint, and a  
series of waypoints in between. Users can begin navigation at the beginning, the end (to  
run the route in reverse) or at any waypoint in between. See Waypoint.  
SD: SD is an acronym for Secure Digital. An SD card is virtually identical in function  
to an MMC; however, the speed at which information can be accessed is generally  
faster, the storage capacity is generally larger, and the card has security features  
which can be used to prevent extracting the data from the card. SD is the same  
format that many digital cameras use. See MMC.  
Selective Availability: Selective Availability (SA) is a GPS system “feature” that can be  
implemented by the U.S. Department of Defense (DoD) to degrade the accuracy of GPS  
positioning information. With SA active, the GPS is accurate to within 100 meters 95%  
of the time. With SA inactive, the GPS is accurate to within 45 meters 95% of the time.  
Currently, SA is inactive and the consumer can enjoy the greater precision GPS  
provides; however, the DoD reserves the right to activate SA at any time.  
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Speed Over Ground (SOG): Speed Over Ground is the measurement of the boat’s  
progress across a given distance, and is the speed measurement provided by GPS. An  
alternate, Speed Through Water, is provided by a speed paddlewheel, and is the  
measurement of the flow past the boat, which may vary depending on current  
speed and direction. Speed Over Ground is optimal for navigation because accurate  
destination times can be derived from this measurement. Humminbird® products  
allow for input and display of both speed measurements.  
Time To Go (TTG): Time To Go is the estimated time required to reach the destination  
waypoint. TTG is calculated using the SOG and DTG. See SOG and DTG.  
Track: A Track is a series of saved points that define the past path of the boat. These Track  
Points are saved at regular time intervals. Tracks are a useful and quick method to see  
where you’ve been, and an easy guide to follow to get you back to the starting point.  
Generally, all GPS units have a limited number of Track Points that can be saved before the  
unit runs out of memory and begins erasing the first track points saved. Because of this,  
the user can adjust the Track Point Interval menu to increase the amount of time between  
when points are saved, and thus extend the distance covered by a track. Tracks can also  
be permanently saved to memory, and re-displayed at the user’s option.  
Track Line (TRK): The Track Line is the desired line of travel between two waypoints,  
and represents the most efficient path between the two points because it is a  
straight line. The TRK is measured in degrees (i.e. 321°, where 000° is North, 090°  
East, 180° is South, 270° is West). See Cross Track Error and Course Over Ground.  
Trackplotter: Trackplotter describes a navigation device that shows Present Position,  
along with Track, Waypoint, and Routes, but NO MAP in the background. See Chartplotter.  
Trolling Grid: Trolling Grid is a Humminbird® feature that displays a precise  
reference grid around a waypoint. This grid is used as a guide pattern for trolling  
around a specific area to assure a more efficient and complete coverage of that area.  
Trolling Grid resolution be changed by zooming in or out on the chart. The Trolling  
Grid can also be rotated on the display to orient it for optimal boat course for wave  
and wind conditions.  
UTC: UTC is an acronym for Universal Time Constant. UTC is the “standard time” used in  
navigation, and is the local time in Greenwich England. (UTC is equivalent to Greenwich  
Mean Time (GMT)). To display the correct Local Time in a Humminbird® GPS unit, the  
user must use the Local Time Zone menu and select the time zone (i.e. EST, CST).  
WAAS: WAAS is an acronym for Wide Area Augmentation System. WAAS is  
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complementary technology to GPS that provides enhanced accuracy through  
correction signals broadcast from Federal Aviation Administration WAAS satellites  
stationed over the USA. These secondary signals are automatically received by the  
standard Humminbird® GPS Receiver. With WAAS signal, GPS accuracy is improved  
to within 3 meters 95% of the time. Outside the United States, regional  
governmental coalitions have created similar systems such as EGNOS (Europe) and  
MSAS (Japan).  
Waypoint: A Waypoint is the saved location (latitude, longitude) of a point of  
interest that is stored in a GPS receiver’s memory. This can include a marker buoy,  
dock, fishing hole or anywhere else the user may want to return to. Humminbird®  
products offer the ability to name and assign a symbol to the saved location. Depth,  
Date and Time of Day when the waypoint was created is also saved.  
Waypoint Target: Waypoint Target is a Humminbird® feature that displays a precise  
“bull’s eye” around a selected waypoint. This bull’s eye is used to easily monitor boat  
position relative to a waypoint, and is useful for fishing over submerged structure.  
With Waypoint Targets, a quick look at the screen lets you know how far off the  
waypoint the boat has drifted.  
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Notes  
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Notes  
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Notes  
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Contact Humminbird®  
Contact the Humminbird® Customer Resource Center  
in any of the following ways:  
By Telephone:  
(Monday - Friday 8:00 a.m. to 4:30 p.m. Central Standard Time):  
1-800-633-1468  
By e-mail:  
(typically we respond to your e-mail within three business days):  
For direct shipping, our address is:  
Humminbird  
Service Department  
678 Humminbird Lane  
Eufaula, AL 36027 USA  
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