3.4 Aligning Heading

3.5 Adjusting Sweep Timing

(Adjustment sector: 0~359.90)

(Adjustment range: 0.000~4.266 nm)

You have mounted the scanner unit facing straight ahead in the direction of the bow. Therefore, a small but conspicuous target dead ahead visually should appear on the heading marker (zero degrees).

In practice, you will probably observe some small bearing error on the display because of the difficulty in achieving accurate initial positioning of the scanner unit. The following adjustment will compensate for this error.

1.Identify a suitable target (for example, ship or buoy) at a range between 0.125 to 0.25 nautical miles, preferably near the head- ing marker. To lessen error, keep echoes in the outer half of the picture by chang- ing the range. Also, be sure the zoom and off center functions are off.

2.Select “9. Heading Alignment” from the Installation Setup menu and press the [ACQ/ENTER] key. The following mes- sage appears:

[Heading Alignment] Set EBL1 to center of target

dead ahead and press ENTER.

Correction 0.0°

<Press MENU for inst setup>

Figure 3-3 Heading alignment message

3.Operate the omnipad to bisect target se- lected at step 1 with the heading marker.

4.Press the [ACQ/ENTER] key.

5.As a final test, move the boat towards a small buoy and confirm that the buoy shows up dead ahead on the radar when it is visually dead ahead.

This adjustment ensures proper radar per- formance, especially on short ranges. The radar measures the time required for a trans- mitted echo to travel to the target and return to the source. The received echo appears on the display based on this time. Thus, at the instant the transmitter is fired, the sweep should start from the center of the display (sometimes called sweep origin).

A trigger pulse generated in the display unit goes to the scanner unit through the signal cable to trigger the transmitter (magnetron). The time taken by the signal to travel up to the scanner unit varies, depending largely on the length of the signal cable. During this pe- riod the display unit should wait before start- ing the sweep. When the display unit is not adjusted correctly, the echoes from a straight local object (for example, a harbor wall or straight pier) will not appear with straight edges – they will be seen as “pushed out” or “pulled in” near the picture center. The range of objects will also be incorrectly shown.

(1) Correct

(2) Target pushed

(3) Target pushed

 

inward

outward

Figure 3-4 Examples of improper and

correct sweep timing

1.Transmit on the shortest range and con- firm that the [GAIN] and [A/C SEA] con- trols are properly adjusted.

2.Visually select a target which forms a straight line (for example, harbor wall, straight pier).

3.Select “10. Sweep Timing Adjustment” from the Installation Setup menu and press the [ACQ/ENTER] key. The follow- ing message appears:

3-2

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Furuno 1932 MARK-2 Aligning Heading Adjusting Sweep Timing, Adjustment sector 0~359.90 Adjustment range 0.000~4.266 nm
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1932 MARK-2 specifications

The Furuno 1932 MARK-2 is a state-of-the-art radar system designed for maritime applications, providing exceptional performance and reliability. This advanced radar unit is renowned for its impressive range, superior target detection capabilities, and user-friendly interface, making it an essential tool for vessels of all sizes.

One of the standout features of the Furuno 1932 MARK-2 is its high-resolution display. The 10.4-inch color LCD screen offers crystal-clear visuals, enabling mariners to easily interpret radar data. With the capability to display 16 different colors, users can customize their views for enhanced clarity, allowing for better discrimination between targets and clutter. Additionally, the unit incorporates adjustable gain and clutter control, giving operators the ability to fine-tune the radar image to suit varying conditions, whether in busy harbors or open waters.

The 1932 MARK-2 utilizes a powerful 2.2 kW magnetron, allowing for excellent range performance. It can effectively detect targets up to 36 nautical miles away, providing mariners with ample warning of potential hazards. This long-range capability is complemented by advanced target tracking technologies, including ARPA (Automatic Radar Plotting Aid). This system enables users to monitor and track multiple vessels simultaneously, providing essential information such as course, speed, and distance for better situational awareness.

In terms of technology, the Furuno 1932 MARK-2 includes a Fast Target Update feature. This allows for rapid refresh rates, ensuring that moving targets are accurately displayed, even in heavy traffic areas. The unit also employs advanced digital signal processing to filter out noise and improve target detection, enhancing overall operational efficiency.

Another key characteristic of the 1932 MARK-2 is its robust build quality. Designed to withstand the marine environment, the unit features a waterproof casing with an IP55 rating, ensuring durability against splashes and humidity. Furthermore, its compact design offers versatile mounting options, making it adaptable for various vessel configurations.

Overall, the Furuno 1932 MARK-2 radar system stands out for its blend of advanced technology, user-centric features, and rugged reliability. Its ability to provide clear and accurate radar imagery makes it an invaluable asset for navigators, enhancing safety and efficiency on the water. As an investment in maritime technology, it offers significant advantages to enhance both recreational and commercial navigation.
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