Table of Contents |
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Daylight Savings Time (Advanced) | 72 |
Position Format (Advanced) | 72 |
Time Format (Advanced, International Only) | 73 |
Date Format (Advanced, International Only) | 73 |
NMEA Output (Advanced) | 74 |
Sonar | 74 |
Views Menu Tab | 75 |
Accessories Menu Tab | 76 |
Troubleshooting | 77 |
Matrix™ Doesn’t Power Up | 77 |
Matrix™ Defaults to Simulator with a Transducer Attached | 77 |
Display Problems | 78 |
Finding the Cause of Noise | 79 |
Matrix™ Accessories | 80 |
Specifications | 81 |
Contact Humminbird® | 82 |
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) or (with Optional- Purchase QuadraBeam™/WideSide® Transducer) or (with Temp/Speed Only) require the purchase of separate accessories. You can visit our website at www.humminbird.com to order these accessories online or contact our Customer Resource Center at
How Sonar Works
Sonar technology is based on sound waves. The Matrix™ Fishing System uses sonar to locate and define structure, bottom contour and composition, as well as depth directly below the transducer.
Your Matrix™ 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 ¼ of a second. It is unlikely that your boat can "outrun" this sonar signal.
DualBeam PLUS™ Sonar
Your Matrix™ 87c is shipped with a 200/83 kHz DualBeam PLUS™ sonar system with a wide (60°) area of coverage. DualBeam PLUS™ sonar returns can be blended together, viewed separately or compared side-
QuadraBeam™ Sonar
(with Optional-Purchase QuadraBeam™ Transducer)
Your Matrix™ 87c also supports QuadraBeam™ sonar with the purchase of an additional QuadraBeam™ transducer. QuadraBeam™ sonar provides an extremely wide 90° area of coverage. QuadraBeam™ starts with two 45° 455 kHz beams for a continuous 90° of uninterrupted side to side coverage to 160 feet. These Side Structure locating beams reveal fish and structure to the left and right of your boat near the bottom. For structure directly below your boat, Quadrabeam™ uses DualBeam PLUS™ technology.
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