Increase your boat speed to ensure that you get a continuous bottom reading as the boat moves. Your sensor is designed to operate at up to 75 mph, however exercise caution when operating any boat at high speed.
If the LCR 3D performs well at idle or slow speeds, but the display is not continuous at higher speeds, the sensor is not installed properly. Air bubbles or turbulence from the boat hull are passing across the sensor face, blocking the transmitted signal. By following the instructions in "Mounting the Sensor," you can make simple adjustments that should fix the problem.
NOTE: If other problems occur, see "Troubleshooting" later in this manual for tips from the Humminbird engineers. If you don't find the solution there, call our toll free Customer Service Hotline and speak with one of our highly trained customer service representatives.
This section explains how to run the LCR 3D simulator for practice and how to start the LCR 3D for actual use. You're also shown how to use VIEW and BEAM - the buttons that let you control the display of underwater images on the LCR 3D screen.
You should read this section and Section 5, "Select System Functions", as you first learn to use the LCR 3D. Doing so will ensure you make the most of its many features.
The first part of this section
explains the
