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TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . 1
General Description . . . . . . . . . . . . . . . . . 1
Ice System Set-Up . . . . . . . . . . . . . . . . . . 2
Open Water Set-Up . . . . . . . . . . . . . . . . . . 3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 5
Display Diagram . . . . . . . . . . . . . . . . . . . . 8
Deluxe Ice System Only . . . . . . . . . . . . . 10
Product Performance Specifications . . . 11
Signal Interpretation . . . . . . . . . . . . . . . . 12
User Tips . . . . . . . . . . . . . . . . . . . . . . . . . 13
Service . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . 16
Introduction
Thank you for purchasing the LX-3 multicolor sonar unit. The
LX-3 incorporates the latest in sonar technology, featuring a
flexible zoom that can be set anywhere between surface and
bottom, 1500 watts of peak-to-peak power, signal interference
rejection, and target separation down to 1 inch. Our goal at
MarCum Technologies is to set the industry standard for perform-
ance while maintaining the highest level of reliability. Please read
this operation manual carefully before using your unit. Only by
reading this manual can you realize the maximum benefit from
your purchase. Enjoy your new LX-3!
General Description
The LX-3 multicolor sonar unit utilizes three different colors
within its display to differentiate between densities of objects.
The Red light displays the strongest of return signals, often signi-
fying a hard bottom or a larger fish that is often in the center of
the transmit signal (cone). The Orange light displays the next in
the line of weaker-signal returns, often signifying a softer bottom
or smaller fish in the middle of the transmit signal or a larger fish
on the outside of the transmit signal. The weakest return is dis-
played by a Yellow light and often signifies weeds, small bait-fish,
medium-sized fish on the outside of the transmit signal, or a very
soft bottom. The use of different colors in defining return signals
is meant to be informative in indicating the size of fish, type of
bottom or location of weeds. The interpretation of these signals
improves with experience and use in the field.
The LX-3 offers six levels of signal Interference Rejection (IR)
that knock out signals from nearby competing units. This is most
prevalent in ice-fishing applications where anglers utilizing sonar
are often grouped together within small areas. The LX-3 offers a
Zoom feature that allows the user to hone in on a specific sec-
tion of water within the water column and, conversely, improve
the ability to separate targets from 2.15 inches down to 1 inch.
The Zoom window (area of water being selected) can be set at
either 5 or 10 feet on the 20- and 40-foot depth range, 10 or 20
feet on the 80-foot depth range, or 20- or 40-feet on the 160-foot
depth range.
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