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USING THE LCR

INTRODUCTION

Before attempting to install or operate your Humminbird LCR, it is recommended that you read the operations manual thoroughly. The LCR4-ID and LCR40-ID have a number of special features not found on other depth sounders. To completely understand all the features of your unit, we suggest you follow the instructions in this manual. If after reading the instructions, there is something you do not completely understand about the operations of your unit, we recommend you contact our customer service department- CALL (334)687-0503.

INTRODUCTION

Congratulations on selecting the LCR4-ID or LCR40-ID.Your unit uses advanced LCR technology to make it easy to use and easy to understand so that you will quickly learn the basics of operating your unit. It also incorporates the most innovative concepts available for finding fish, making it the first true fish finder ever made. Read this operations manual thoroughly for all the outstanding features of your LCR. You will be amazed at its capabilities.

Since there are virtually no moving parts, your LCR will function more trouble free than any sonar unit you have ever owned. This unit has been engineered, tested, manufactured, and is guaranteed by the employee/owners of Techsonic Industries, located on the shores of Lake Eufaula, Alabama.

Fishing, boating, and depth sounders are our business, and at Humminbird we stand behind our product 100%.

Your new LCR is covered by our Lifetime Guaranteed Service policy. We wish you good luck, good fishing, and many hours of pleasure with your new Humminbird LCR.

THEORY OF OPERATION

Your Humminbird LCR works on the basic principals of sonar. An electronic signal is generated within the control head of the unit. When coupled to the transducer, this signal is converted to an ultrasonic signal and is transmitted toward the bottom. The speed of the ultrasonic signal traveling through the waters is approximately 4800 feet per second.

The signal travels through the water until it strikes an object or the bottom. At this instant it is reflected back, picked up by the transducer, reconverted to an electronic signal and is recorded on the display of the LCR.

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Humminbird LCR 40.ID manual Introduction, Theory of Operation