Lowrance Mark-4 HDI Operation Manual EN - Page 30

Restricts unit's digital depth search capability Sonar Settings Menu Turns on/off DownScan overlay When the unit is in manual mode, you may not receive any depth readings, or you may receive incorrect depth information. Fishing Mode Enhances the performance of your unit by providing preset packages of sonar settings geared to specific fishing conditions. For more information about fishing modes, refer to the "Basic Operation" section. Manual Mode Restricts digital depth capability, so the unit will only send sonar signals to the selected depth range. That allows the display to continue smooth scrolling if the bottom depth is out of transducer range. Reset Fishing Mode Resets selected fishing mode to default settings. That is useful when you want to clear settings adjustments made while using a fishing mode. WARNING: Manual mode should only be used by advanced sonar users. Sonar Operation | Mark-4 & Elite-4 HDI 28