This option is available only on the split zoom, the split bottom lock, and the split 50/200 screens. The 8000i must be displaying one of these Sounder screens.

If you want to change the ratio of an A-Scope screen (see "Change the ratio of the A-Scope" page 111), .

To change the ratio of the split screens:

1.Display the Sounder screen and the control panel. If you can't see the

Range, Zoom and Split button, select Return.

2.Select Range, Zoom and Split.

3.The Split Ratio button shows the current setting. Select the button if you want to change the current setting.

4.Select Increase or Decrease to change the ratio of the split screens.

5.The new setting is applied immediately and stays until you change it again.

6.Select OK to confirm the new setting.

7.When you are finished, select Return.

16.18What is the A-Scope?

You can use the A-Scope to analyze the sonar echoes in detail, so that you can optimize the gain (see "What is gain?" page 115)and the gain threshold levels (see "What is the gain threshold?" page 116) for the current sonar frequency.

The A-Scope appears in the right side of your Sounder screen as a vertical column of multi-colored, horizontal lines that are constantly moving. It shows a real-time image of each sonar pulse.

The length of each horizontal line shows the strength of the echo at that particular depth.

You can show or hide A-Scope. If you show the A-Scope, you can select a standard or an advanced A-Scope.

The standard A-Scope shows the:

•strong echoes as long horizontal lines

•weak echoes as short horizontal lines The advanced A-Scope also shows:

•a static thin red vertical line showing the maximum sonar amplitude. You can't change this. Any echoes that exceed this maximum are always shown in red

•a white (or black) thin vertical line showing the selected minimum amplitude, which controls the range of colors displayed. You can change this with the gain threshold. Any echoes that don't reach this minimum are shown in the background color of the current palette

•a color bar at the top of the A-scope, showing the colors associated with each sonar amplitude. You can change the width of the colors with the gain setting.

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NorthStar Navigation 8000I operation manual What is the A-Scope?
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8000I specifications

The NorthStar Navigation 8000i is a sophisticated marine navigation solution designed to enhance the safety and efficiency of marine operations. Utilizing the latest technology and innovative features, the 8000i provides users with a comprehensive navigation tool that is both user-friendly and highly reliable.

At the heart of the NorthStar 8000i is its advanced GPS integration, which delivers precise positioning and navigation capabilities. The system supports multiple satellite systems, allowing for exceptional accuracy and reliability in determining a vessel's location, even in challenging conditions. The 8000i uses Differential GPS (DGPS) to further improve positional precision, making it suitable for commercial vessels and recreational boaters alike.

One of the standout features of the NorthStar 8000i is its large, high-resolution color display, which presents information in a clear and accessible manner. The screen offers customizable layouts, allowing users to prioritize the data they find most critical. The interface is designed with simplicity in mind, enabling users to access navigation tools, charts, and other features quickly and easily.

The NorthStar 8000i is equipped with advanced cartography options, including support for a variety of chart formats. Users can choose between vector and raster charts, ensuring that they can find the best option for their specific needs. The system also supports both local and regional data, providing an extensive coverage area for vessels operating in different waters.

In terms of connectivity, the 8000i features integrated networking capabilities, allowing it to interface seamlessly with other marine electronics such as radar systems, autopilots, and AIS transceivers. This interoperability enhances situational awareness and provides a comprehensive picture of the marine environment around the vessel.

The rugged design of the NorthStar 8000i ensures that it can withstand the challenging conditions often encountered at sea. Built to be weatherproof and durable, this navigation system is ready for any marine adventure.

To summarize, the NorthStar Navigation 8000i combines cutting-edge GPS technology with user-friendly designs and exceptional features, making it a top choice for navigators seeking reliable marine navigation solutions. With its accuracy, customizable interfaces, and robust construction, the 8000i is engineered to meet the diverse needs of modern sailors, whether for leisure or professional undertakings.
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