Navigation Menu Tab | 25 |
Tracks | 25 |
Waypoints | 26 |
View Orientation | 26 |
North Reference | 27 |
Grid Rotation | 27 |
Trackpoint Interval | 27 |
Track Min Distance (Advanced) | 28 |
Map Datum (Advanced) | 28 |
Delete All Nav Data (Advanced) | 29 |
Alarms Menu Tab | 29 |
Off Course Alarm | 29 |
Arrival Alarm | 30 |
Drift Alarm | 30 |
Setup Menu Tab | 31 |
Units - Distance | 32 |
Units - Speed | 32 |
Triplog Reset | 32 |
Local Time Zone (Advanced) | 33 |
Daylight Savings Time (Advanced) | 33 |
Position Format (Advanced) | 34 |
Time Format (Advanced, International Only) | 34 |
Date Format (Advanced, International Only) | 35 |
NMEA Output (Advanced) | 35 |
Troubleshooting | 36 |
Fishing System Doesn’t Power Up | 36 |
Fishing System Defaults to Simulator with a Transducer Attached | 36 |
Display Problems | 37 |
Finding the Cause of Noise | 38 |
Matrix Fishing System Accessories | 39 |
Contact Humminbird® | 40 |
NOTE: Entries in this Table of Contents which list (International Only) are only available on products sold outside of the US and Canada 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
NOTE: Entries in this Table of Contents which list (with PC Connect Cable Only) require the purchase of a separate accessory. You can visit our website at www.humminbird.com to order these accessories online or contact our Customer Resource Center at
GR4 GPS Connection Kit
The Humminbird® GR4 GPS Connection Kit includes the following items:
•GR4 GPS Antenna Receiver with 20' (6m) cable
•AS YC("Y") cable for multiple accessory attachment
•Hardware kit for stem or deck mounting
•GR4 GPS Receiver Accessory Manual
NOTE: 10 foot extension cables are available as an optional purchase item. These can be used to extend the total GR4 Antenna Cable length up to 50 feet.
How GPS Works
Your Matrix Fishing System 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. The GR4 GPS Receiver can use 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.
GPS uses a constellation of satellites that continually send radio signals to the earth. Your present position is determined by receiving signals from up to 12 satellites and measuring the distance from the satellites.
The following GPS functionality is currently supported by the Matrix Fishing System when it is connected to a GPS receiver:
•View current position
•View current track (breadcrumb trail)
•View precision speed and heading from your GPS receiver
•Save tracks and waypoints
•Travel a route and navigate from one waypoint to the next.
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