The information on the left side of the display is an expanded view of the area from the top of the zoom region to the bottom of the zoom region. The exact depth of the top and bottom of the zoom range will be displayed in the upper and lower left corners of the screen. As the zoom range is moved up or down these numbers will change to indicate the exact setting of the zoom range. These depth indicators will be very useful in pinpointing the exact depth of fish or structure.

The zoom may be activated at anytime but while learning to use the zoom feature you might find it easiest to first press the Stop/Resume button to freeze the display. Now you can select the zoom range size, position it, activate the zoom and have time to study the display.

While the zoom is turned on you can move the zoom range up and down. This will allow you to search or look at an entire area in fine detail. The LCR's Total Screen Update feature allows you to zoom in on an area even after you have passed over it.

Remember that because of the LCR's Total Screen Update feature even while you are using Zoom, no information is being lost. You can turn Zoom off, go to any depth range and see all the information just as if you had been on that depth range all long.

Bottom Lock: - Bottom Lock can be turned on only when the LCR is in the automatic mode and zoom is off. To activate bottom lock, hold down the Zoom/Bottom Lock button for 1 to 2 seconds (the key panel has a "Dash" by the BL symbol indicating that you must hold down to activate bottom lock). When bottom lock is activated the screen will automatically split to show the full depth scale information on the right and an expanded view from the bottom up on the left. Just above the word Bottom Lock on the left side of the display will appear a group of arrows indicating that Bottom Lock is on. (See Figure 19).

Bottom Lock will give an expanded view up from the bottom. You will notice that as the bottom depth changes, the zoom range will also change to maintain its position to the bottom. You will find that the bottom lock feature is easiest to use on a relatively smooth bottom or at slow trolling speeds.

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Humminbird LCR 8000D manual

LCR 8000D, LCR 8000 specifications

The Humminbird LCR 8000 and LCR 8000D are advanced fish finders designed for avid anglers who seek precision and reliability on the water. These devices are known for their high-performance features that enhance the fishing experience, making it easier to locate fish and understand underwater structures.

One of the standout characteristics of the LCR 8000 series is its large display, which typically measures 8 inches. The screen is designed to offer exceptional clarity and visibility, even in bright sunlight. With a resolution of 640 x 480 pixels, users can expect sharp images and detailed sonar readings. The LCR 8000D version takes this a step further with additional features such as a split-screen display, allowing users to monitor multiple functions simultaneously.

These models integrate advanced sonar technology, including dual-beam sonar capabilities. The LCR 8000 and 8000D can operate on both narrow and wide beam frequencies, enabling anglers to cover more water and get a more comprehensive view of underwater environments. The fish symbol identification feature provides an intuitive way for users to discern between fish and other objects, enhancing their chances of a successful catch.

Another notable feature is the AutoZoom capability, which automatically adjusts the viewing area to focus on the depth range where fish are most likely to be present. This real-time information helps users make quick decisions about where to cast their lines.

Additionally, the LCR 8000D offers an integrated temperature sensor, providing real-time water temperature readings that can be crucial for understanding fish behavior. The ability to record sonar logs is another innovative aspect, allowing users to review their fishing trips and analyze data for future outings.

Both models boast rugged construction suitable for various weather conditions, ensuring durability on the water. The user-friendly interface and straightforward controls make it accessible for both seasoned professionals and recreational anglers alike.

In conclusion, the Humminbird LCR 8000 and LCR 8000D represent a significant advancement in fish finding technology, combining powerful sonar capabilities, user-friendly design, and robust construction. These devices are designed to elevate the fishing experience, enabling users to optimize their time on the water and increase their chances of success.