Humminbird HELIX 7 CHIRP MEGA SI GPS G3 User Manual

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HELIX Series

Operations Manual

532509-5EN_A

Table of Contents

Warnings2
- Table of Contents4
Introduction7
Using Humminbird Manuals on Your Mobile Device or PC9
Getting Started10
HELIX Control Head19
Update Software25
Menu System Overview26
- Open an X-Press Menu26
- Open the Main Menu26
- Select a Menu27
- Change a Menu Setting27
- Tips for Using the Menu System28
- Change the User Mode (Angler or Custom)29
- Close the Menu System29
Views30
- Display a View30
- Show Your Favorite Views31
- Save a View to the VIEW SHORTCUT Key31
- Display Digital Readouts32
- Combo Views36
Set up Sonar37
Display a Sonar View On-Screen50
- Understand the Sonar Views52
- Customize the Sonar View53
- Adjust Sonar Display Settings58
- Adjust Settings While You Fish62
- Compare Sonar Beams (Split Sonar View)67
- Review Sonar History68
- Zoom In/Zoom out69
- Navigation in Sonar Views73
Display a down Imaging View On-Screen76
- Understand the down Imaging View78
- Customize the down Imaging View79
- Adjust Settings While You Fish82
- Review down Imaging History and Zoom In/Out87
- Navigation in down Imaging Views89
Display a Side Imaging View On-Screen91
- Understand the Side Imaging View93
- Customize the Side Imaging View95
- Adjust Settings While You Fish98
- Review Side Imaging History and Zoom In/Out105
- Navigation in Side Imaging Views107
Ice Fishing Overview109
- Understand the Flasher View110
- Adjust Settings While You Fish111
- Move the Depth Cursor115
- Zoom In/Out in Flasher View116
- Using Sonar Zoom View in Ice Fishing Mode118
- Charge Glow-In-The-Dark Lures120
Manage Screen Snapshots and Recordings121
Chart Overview129
- Display a Chart View On-Screen130
- Select a Map Source132
- Customize the Bird's Eye View138
- Customize the Chart Instrument View139
- Customize the Chart View140
- Display Chart Overlays144
  - Contour Lines and Depth Ranges146
  - Contour Lines and Depth Ranges148
- Change the Chart Orientation and Motion Mode150
Navigation Overview152
- Navigation Alarms Overview154
- Man Overboard (MOB) Navigation155
Waypoints157
Routes166
Tracks171
Search174
Manage Your Navigation Data176
- Manage Waypoints179
- Manage Routes183
- Manage Tracks190
- Manage Groups192
- Search and Organize196
- Import/Export Navigation Data198
- Delete All Navigation Data and Reset198
Autochart Live Overview199
- Plan Your Map199
- Prepare the Control Head for Mapping200
- Record Your Custom Map203
- Stop Recording204
- Correct Data204
- Using Autochart Live in Ice Fishing Mode205
- Open the Autochart Live Menu206
- Display the Autochart Live Map206
- Customize the Autochart Live Map Display Settings208
- Customize the Bottom Hardness Display Settings213
- Customize the Vegetation Display Settings217
Set up a NMEA 2000 Network221
- Understand the NMEA 2000 Instrument View225
Manage Your Control Head226
Maintenance232
Troubleshooting233
Specifications235
Statements and Acknowledgements328
Contact Humminbird330

Questions and Answers:

M
michael43Jul 25, 2025
Why does my Humminbird HELIX 7 CHIRP MEGA SI G3 control head lose power at high speeds?
- G
  Greg JonesJul 25, 2025
  The control head might be losing power at high speeds because the power output of your boat’s engine is unregulated. Ensure that the input voltage does not exceed 20 Volts.

Humminbird HELIX 7 CHIRP MEGA SI GPS G3 Specifications

General

Display Size	7 inches
Display Resolution	800 x 480 pixels
GPS	Yes
Waterproof Rating	IPX7
Chartplotting	Yes
Sonar Technology	CHIRP, MEGA Side Imaging
Mapping	Humminbird Basemap
Transducer	MEGA Side Imaging
Power Output	500 Watts RMS
Sonar Frequencies	CHIRP: 83/200 kHz
Battery Voltage	10.8 to 20.5 VDC
Weight	4 lbs
Frequency	CHIRP: 83/200 kHz

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