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HOW THE LCR-100 WORKS 

 
There are two main components to your LCR 100 installation: The transducer, which was 
installed beneath your boat, and the LCR 100 unit, mounted either in-dash or on a gimbal 
bracket. The transducer and LCR 100 communicate by means of a cable, and are powered by 
your boat's 12-volt DC battery. 
 

              

 

 
The transducer and LCR 100 use the basic principles of sonar to reveal objects beneath the 
water's surface. The LCR 100 continuously sends electronic signals to the transducer, which 
converts them to ultrasonic signals that it aims toward the bottom. Each signal travels downward 
until it strikes an object or the bottom, then immediately echoes back to the transducer. As the 
transducer receives these signals, it converts them back to electronic signals for display on the 
LCR 100 screen. 
 
The LCR 100 uses the returned signals to display a detailed underwater image, and constantly 
updates the display as you travel across the water. The display informs you of the current depth 
and reveals individual fish, schools of fish, their location, and bottom details. 
 

 

 
Easy-to-use controls on the LCR 100 allow you to set the depth range, adjust display speed and 
sensitivity, enable a fish alarm and bottom alarm, and display a "zoom" window of still more 
detailed information. 
 
 

THE HUMMINBIRD ADVANTAGE 

 
 

The LCR 100 incorporates the best of available technologies, and offers advantages you 

won't find in other depth sounders. 
 
 

The liquid crystal display (LCD) offers sharp viewing even in bright, direct sunlight, and is 

continuously lit for nighttime operation. Advanced LCD "super-twist" technology built into the LCR 
100 offers a wider viewing angle and higher contrast than ordinary LCD screens. 

Summary of Contents for LCR 100

Page 1: ......

Page 2: ...to electronic signals for display on the LCR 100 screen The LCR 100 uses the returned signals to display a detailed underwater image and constantly updates the display as you travel across the water...

Page 3: ...udes a built in simulator that helps you learn to use your new equipment The simulator displays a typical underwater scene and lets you practice with the controls The unit must be turned off before yo...

Page 4: ...functions for further adjustment Sensitivity Units Bottom Alarm Fish Alarm Zoom Bottom Lock Display Speed Depth Range To adjust any of these press SELECT until the function you want appears Each func...

Page 5: ...remains 2 settings higher than the normal automatic setting Pressing the ON OFF button when the SENS menu is displayed switches the unit of depth measurement between feet and meters 2 Enabling Bottom...

Page 6: ...To activate it select Zoom and press ON OFF The Zoom view initially begins at the surface pressing the Up or Down arrow adjusts Zoom depth The range of the display is shown when Zoom is on The Zoom ra...

Page 7: ...is the last function selected you can use the ON OFF button to switch Bottom Lock on and off without having to press SELECT first 6 Setting Display Speed Factory setting One level below maximum The LC...

Page 8: ...h water When cleaning the LCD screen use a chamois and non abrasive cleaner such as Windex Do not wipe while dirt or grit is on the screen Be careful to avoid scratching the screen The transducer face...

Page 9: ...and high sensitivity The transducer is mounted too close to the propeller and is being affected by air bubbles from the prop Ask the dealer who installed the LCR 100 to move the transducer away from t...

Page 10: ...rts 2 You will be charged for repair of any physical damage 3 Transportation charges will be the responsibility of the purchaser THIS IS A FULL WARRANTY AS DEFINED BY THE FEDERAL WARRANTY ACT EFFECTIV...

Page 11: ...d it to us Refer to Humminbird s Guaranteed Service Policy at the end of this manual All units out of warranty will be returned C O D If you are including a check please attach it to the unit Techsoni...

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