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M87_Man_531352-1_A.qxd
12/9/2004
Table of Contents
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
Matrix™ Doesn't Power Up ...................................................................................................................... 77
Matrix™ Defaults to Simulator with a Transducer Attached .......................................................... 77
Display Problems ........................................................................................................................................ 78
Finding the Cause of Noise ...................................................................................................................... 79
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 1-800-633-1468 to locate the distributor nearest you.
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 1-800-633-1468.
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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-
by-side. DualBeam PLUS™ 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.
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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