Humminbird 757c User Manual Page 98
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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 200/83kHz Split Sonar View. The 83kHz 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)
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- Thank You! 2
- Table of Contents 3
- Setup Menu Tab 119 8
- Views Menu Tab 132 8
- Accessories Menu Tab 133 8
- Troubleshooting 136 8
- Specifications 141 9
- Glossary 143 9
- Contact Humminbird® 159 9
- How Sonar Works 10
- DualBeam PLUS™ Sonar 12
- QuadraBeam PLUS™ Sonar 13
- WideSide® Sonar 14
- Universal Sonar 2 14
- How GPS and Cartography Work 15
- Multi-Media Card 17
- (MMC)/SD Slot 17
- Software Updates 17
- What’s On the Display 18
- Sonar View 21
- Understanding Sonar History 22
- Real Time Sonar (RTS®) Window 23
- Freeze Frame and Cursor 23
- Bottom Presentation 24
- Sonar Zoom View 27
- 200/83 kHz Split Sonar View 28
- Big Digits View 29
- Circular Flasher View 30
- Snapshot and Recording View 31
- Recording Slider Bar 34
- Recording Playback 35
- Side Beam View 36
- WideSide® View 39
- Bird’s Eye View 40
- Chart View 41
- Combo View 43
- View Orientation 44
- Viewing Cartography 44
- NOTE: The built-in UniMap 45
- Introduction to Navigation 46
- Waypoints, Routes and Tracks 46
- Menu Tab) 47
- Chart View with Target 49
- Chart View with Grid 50
- Save, Edit or Delete a Route 51
- Save or Clear a Current Track 52
- MOB Navigation 54
- Key Functions 55
- POWER/LIGHT Key 55
- VIEW Key 55
- INFO Key 56
- MENU Key 56
- 4-WAY Cursor Control Key 57
- MARK Key 57
- GOTO Key 58
- ZOOM (+/-) Key 58
- EXIT Key 59
- Accessory Bus 60
- Powering Up the Unit 61
- The Menu System 62
- Sonar Tab, Normal Mode 63
- Sonar Tab, Advanced Mode 63
- Start-Up Options Menu 64
- Normal Operation 64
- Simulator 65
- System Status 66
- Self Test 66
- Accessory Test 67
- GPS Diagnostic View 68
- (with PC Connect cable only) 69
- Sonar X-Press™ Menu 70
- Center at 1-800-633-1468 71
- Sensitivity 72
- Upper Range 73
- Lower Range 74
- Side Beam Range 75
- Chart Speed 76
- Quad Layout 76
- Bottom Lock 77
- Bottom Range 77
- Cancel Navigation 78
- Navigation X-Press™ Menu 79
- Waypoint [Name] 80
- Cursor to Waypoint 81
- Save Current Track 81
- Clear Current Track 82
- Save Current Route 82
- Skip Next Waypoint 83
- Cancel MOB Navigation 84
- Remove Target 84
- Remove Grid 85
- Snapshot and Recording 87
- X-Press™ Menu 87
- Start Recording 88
- Stop Recording 88
- Delete Image 89
- Delete All Images 89
- Delete Recording 90
- Delete All Recordings 90
- Pings Per Second 91
- Playback Speed 91
- Stop Playback 92
- Sonar Menu Tab 93
- Beam Select 94
- Fish ID+ 95
- Fish ID Sensitivity 96
- Bottom View 97
- Zoom Width 97
- 83 kHz Sensitivity 98
- 455 kHz Sensitivity 99
- WideSide® Sensitivity 100
- Depth Lines 101
- Surface Clutter 102
- Noise Filter 103
- Max Depth 103
- Water Type 104
- Transducer Select 104
- Navigation Menu Tab 105
- Current Track 106
- Saved Tracks 107
- Waypoints 108
- Routes Submenu 109
- Chart Orientation 110
- North Reference 110
- Grid Rotation 110
- Trackpoint Interval 111
- Track Min Distance 111
- Track Color Range 112
- Map Datum 112
- Course Projection Line 113
- Export All Nav Data 113
- Delete All Nav Data 114
- Continuous Navigation Mode 114
- Chart Menu Tab 115
- Chart Detail Level 116
- Map Borders 117
- Lat/Lon Grid 118
- Spot Soundings 118
- Shaded Depth 119
- Set Simulation Position 119
- Set Map Offset 120
- Clear Map Offset 120
- Alarms Menu Tab 121
- Depth Alarm 122
- Fish ID Alarm 122
- Low Battery Alarm 123
- Aux Temp Alarm 123
- Temp Alarm 124
- Off Course Alarm 124
- Arrival Alarm 125
- Drift Alarm 126
- Alarm Tone 127
- Setup Menu Tab 128
- Units - Depth 129
- Units - Temp 129
- Units - Distance 129
- Units - Speed 130
- User Mode 130
- Language 130
- Triplog Reset 131
- Restore Defaults 131
- Select Readouts 132
- Default Sonar View 133
- Customized Sonar View 133
- Depth Offset 134
- Aux Temp Offset 134
- Temp Offset 135
- Speed Calibration 135
- Local Time Zone 136
- Daylight Saving Time 136
- Position Format 137
- Time Format 137
- Date Format 138
- Digits Format 138
- NMEA Output 139
- Views Menu Tab 141
- Accessories Menu Tab 142
- Using Screen Snapshot 143
- Troubleshooting 145
- Display Problems 146
- Finding the Cause of Noise 147
- Specifications 150
- Glossary 152
- Contact Humminbird® 168
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