User manual HUMMINBIRD FISHFINDER 515

[. . . ] For complete details, see the separate warranty card included with your unit. We encourage you to read this operations manual carefully in order to get full benefit from all the features and applications of your Humminbird® product. Contact our Customer Resource Center at either 1-800-633-1468 or visit our website at www. humminbird. com. WARNING!This device should not be used as a navigational aid to prevent collision, grounding, boat damage, or personal injury. [. . . ] Due to the transducer beam angle, the distance to a fish decreases as the fish moves into the beam, and then increases as it moves out again, creating a Fish Arch when this distance change is shown on the display. Boat speed, chart speed, and the position of the fish within the sonar beam greatly affect the shape of the arch. Transducer Cone and Fish Arches To turn Fish ID+TM on or off: 1. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Fish ID+TM setting On or Off. (Off, On, Default = Off) 57 Fish ID Sensitivity Fish ID Sensitivity adjusts the threshold of the Fish ID+TM detection algorithms. Selecting a higher setting allows weaker returns to be displayed as fish. Selecting a lower setting displays fewer fish from weak sonar returns. Fish ID+TM must be On for Fish ID Sensitivity to affect the ability of the Fishfinder to identify sonar returns as fish. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID Sensitivity setting. (Low = 1, High = 10, Default = 5) Real Time Sonar (RTS®) Window RTS® Window sets the RTS® Window to either Wide or Narrow, or turns it off in the Sonar View. The RTS® Window always updates at the fastest rate possible and only displays returns that are within the transducer beam. See Real Time Sonar (RTS®) Window for more information. RTS® Window (Wide) RTS® Window (Narrow) RTS® Window (Off) To change the RTS® Window setting: 1. (Off, Low, Medium, High1, High2, High3, Default = Low) Max Depth (Advanced) Max Depth adjusts the maximum depth of operation. The performance of your Fishfinder can be tuned to the maximum depth you will be fishing in by setting the Max Depth. When a maximum depth is set, your Fishfinder will not attempt to acquire sonar data below that depth, thus increasing overall performance. When Max Depth is set to Auto, the Fishfinder will acquire bottom readings as needed (within the capacity of the unit). If the bottom is deeper than the Max Depth setting, the digital depth readout will flash, indicating that the Fishfinder cannot locate the bottom. The Max Depth menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). Make sure you are in Advanced User Mode, then highlight Max Depth on the Sonar main menu. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Max Depth setting. (AUTO, 10 to 800 feet, 3 to 260 meters [International Models only], Default = AUTO) 62 Water Type (Advanced) Water Type configures your unit for operation in fresh or salt water. The Water Type menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). NOTE: In salt water, what would be considered a large fish might be 2 to 10 times bigger than a large fish in fresh water (depending on the type of fish you are seeking). The salt water setting allows for a greater range in fish size adjustment to account for this. [. . . ] Speed Over Ground is optimal for navigation because accurate destination times can be derived from this measurement. Humminbird® products allow for input and display of both speed measurements. Time To Go (TTG): Time To Go is the estimated time required to reach the destination waypoint. Track: A Track is a series of saved points that define the past path of the boat. [. . . ]