ManualOperator
.pdf
Radar OVERLAY
6 minutes
12 minutes
Setting Up FURUNO Radar Overlay in MaxSea
Setting Up FURUNO Radar Overlay in MaxSea
- Following documentation is dedicated to MaxSea working with FURUNO Radar connected ( such as FAR21X7 equipments .)
To display FURUNO Radar Overlay on the chart :
•Click the "Radar Overlay" information button in the chart toolbar to toggle Radar display on/off
•When Radar Overlay is on, FURUNO Radar toolbar appears in the Chart toolbar. See also related topic to use "FURUNO Radar Palette"
•This tool also allows you to display available Radar options :
1.Choose Trails to display moving historic (second trace echo).
2.Choose Rings to display them on the chart.
If the Radar unit is turned on and is properly connected to the computer. The Radar image provides on the opened chart is automatically displayed in the radar operating area.
You will learn in this section how to adjust Radar Overlay with MaxSea.
Choose [Option: Radar...] from the [Utilities] menu to call up the dialog box in which you can :
1.Adjust FURUNO Radar Gain
2.Adjust FURUNO Radar Display
3.Adjust FURUNO Radar Signal Processing
Radar Toolbar
By default when you click on the Radar Button the following radar toolbar is displayed at the same time.
When signal is transmitted from radar, the TX button become activated and it is surrounded with red color as it is shown above.
To call up the "Radar" toolbar go to the [Display] menu and select [Radar].
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MaxSea Operator Manual version 12.6
The Radar control toolbar includes all settings such as Range, Gain, Sea Clutter and Rain Clutter:
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Settings |
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User Interface |
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Range |
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Stdby/Tx |
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Standby |
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Transmit |
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Gain Status |
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Automatic |
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Manual |
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COAST |
For coastal navigation |
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HARBOR |
Optimum setting for short range navigation in harbor area |
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SHIP (selected by default) |
Optimum setting for detecting vessels |
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ROUGH SEA |
Optimum setting for rough weather or heavy rain |
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Preset Picture |
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Setup |
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FAR BUOY |
Optimum setting for detecting navigation buoys, small vessels |
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and other small surface objects at long range. |
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NEAR BUOY |
Optimum setting for detecting navigation buoys, small vessels |
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and other small surface objects at close range. |
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FAR |
Optimum setting for long range detection. |
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NEAR |
Optimum setting for short range detection. |
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PICTURE 1, PICTURE 2, |
Users can adjust from Picture menus (1.2.3.4) changes the |
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PICTURE 3, PICTURE 4 |
original function key settings. |
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Radar OVERLAY
Gain |
Slide 0- 100 |
Slide 0 - 100
AC Sea
AC Rain |
Slide 0 - 100 |
Radar Source |
To switch between Radar Source1 (S1) to Radar Source2(S2) |
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Menu |
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FURUNO Radar Gain Settings
GAI |
Option |
Range |
Operation |
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N |
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Gain Level |
% 0- |
To adjust the Gain value when working with Manual Gain Status: |
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100 |
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1.Click on the Gain line to display the Pop-up menu
2.Adjust the range from 0 to 100% using arrows or modify it directly by entering the desired percentage value
3.Press [ENTER] to validate.
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AC Sea |
- |
To adjusts the AC Sea Status of the radar receiver: |
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Auto/Manua |
Manua |
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l |
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Click on the AC Sea Status line to display the Pop-up menu |
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- Auto |
2. |
Choose a range according to the sea state ROUGH, RATE,CALM, as |
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appropriate or manual MODE to adjust it manually |
3.Press [ENTER] to validate.
More info...
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MaxSea Operator Manual version 12.6
Sea clutter at screen center
A/C Sea adjusted; sea clutter suppressed
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Echoes from waves can be troublesome, covering the central part of the |
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display with random signals known as sea clutter. The higher the waves and |
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the higher the antenna above the water, the further the clutter will extend. Sea |
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clutter may affect radar performance because real targets are sometimes |
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hidden by the echoes of small waves. When sea clutter masks the picture, |
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adjust the A/C SEA to reduce the clutter. |
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The A/C SEA reduces the amplification of echoes at short ranges (where |
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clutter is the greatest) and progressively increases amplification as the range |
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increases, so amplification will be normal at those ranges where there is no |
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sea clutter. |
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AC Sea |
% 0- |
For manual AC Sea status, to Adjust the AC Sea Gain value : |
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Level |
100 |
1. |
Click on the Gain line to display the Pop-up menu |
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2. |
Adjust the range from 0 to 100% using arrows or modify it directly by |
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entering the desired percentage value |
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3. |
Press [ENTER] to validate. |
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Note:Do not overadjust weak echoes may be missed. |
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A/C SEA should be adjusted so that the clutter is broken up into small dots, |
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and small targets become distinguishable. |
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AC Rain |
% 0- |
To adjust the AC Rain Gain value : |
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level |
100 |
1. |
Click on the AC Rain line to display the Pop-up menu |
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2. |
Adjust the range from 0 to 100% using arrows or modify it directly by |
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entering the desired percentage valueReducing Precipitation Clutter |
The vertical beamwidth of the antenna is designed to see surface targets even when the ship is rolling. However, by this design the unit will also detect precipitation clutter (rain, snow, hail, etc.) in the same manner as normal targets. Precipitation clutter shows as random dots on the screen.
Adjusting the A/C RAIN
When echoes from precipitation mask solid targets, adjust the A/C RAIN to split up these unwanted echoes into a speckled pattern, making recognition of solid targets easier.
FURUNO Radar Display Settings
Display settings allows to adjust Radar Overlay image configuration. Display settings information is not interactive with other NavNet equipment connected on the network.
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Radar OVERLAY
Display |
Option |
Range |
Operation |
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Echo Color |
- GREEN (by default) |
To modify echo color. |
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- Yellow, |
1. |
Click on the Echo color line to |
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- Red, |
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display the Pop-up menu |
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- Multi-Color |
2. |
Choose Red, Yellow, Green or Multi- |
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color as desired |
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Note:Multi-color shows echoes in red, |
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yellow or green in order of descending |
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strength |
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Animated Echo Sweep |
On - Off(by default) |
1. |
Check the Box to start the |
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Radar Scan in real time |
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2. |
Press [ENTER] to validate. |
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Radar / Chart Offset Direction |
0-360 |
To define the Chart offset heading: |
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(0° T by default) |
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Click on the Radar / Chart Offset |
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Heading line to display the Pop-up |
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menu |
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2. |
Enter the desired heading offset |
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from 0 to 360 using arrows or modify |
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it directly by entering the desired |
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heading correction value |
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3. |
Press [ENTER] to validate. |
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In some instances position may be off by |
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a few seconds. For example, the position |
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of the ship is shown to be at sea while it |
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is in fact moored at a pier. You can |
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compensate for this error by offsetting |
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chart position |
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Radar / Chart Offset Distance |
0-100 Nm |
To define the Chart offset Distance: |
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(0Nm by default) |
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Click on the Radar / Chart Offset |
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Distance line to display the Pop-up |
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menu |
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Enter the desired distance offset |
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from 0 to 100 using arrows or modify |
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it directly by entering the desired |
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distance correction value |
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3. |
Press [ENTER] to validate. |
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FURUNO Radar Signal Processing Settings
SIGNAL |
Option |
Range |
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Operation |
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PROCESSING |
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MaxSea Operator Manual version 12.6
Echo Stretch 2 by default |
To set the Echo Stretch type: |
1.Click on the Echo stretch line to display the Pop-up menu
2.Choose HIGH, LOW as appropriate or OFF for no Echo Stretch
3.Press [ENTER] to validate.
Normally, the reflected echoes from long range targets appear on the display as weaker and smaller blips even though they are compensated by the radars internal circuitry. The echo stretch function magnifies these small blips in all ranges. Two types of echo stretch are available: LOW which stretches echoes in bearing direction and HIGH which stretches them in both range and bearing directions.
This function magnifies not only targets but also sea clutter and radar interference. For this reason, be sure sea clutter and radar interference are properly suppressed before activating the echo stretch.
More info...
Echo Stretch OFF
Low Echo stretch
High Echo Stretch
Interference |
2 (by |
To set the Rejecting Radar Interference level: |
Reject |
default) |
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1. Click on the Interference Reject line to display the Pop-up menu
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Radar OVERLAY |
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2. |
Choose Low, Medium, High as appropriate or OFF for no Reject. |
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3. |
Press [ENTER] to validate. |
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Radar interference may occur when near another shipborne radar that is operating |
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in the same frequency band as your radar. Its on-screen appearance looks like |
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many bright dots either scattered at random or in the form of dotted lines extending |
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from the center to the edge of the display. Interference effects are distinguishable |
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from normal echoes because they do not appear in the same place on successive |
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rotations of the scanner. |
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Be sure to turn off the interference rejector when no interference exists weak targets |
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may be missed. |
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Noise |
- Off (by |
To adjust the Noise Rejection level: |
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Rejection |
default) |
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Click on the Noise Rejection line to display the Pop-up menu |
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- Low |
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2. |
Choose LOW or HIGH as appropriate or Off for no rejection |
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- High. |
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3. |
Press [ENTER] to validate. |
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Electrical noise, appearing on the screen as speckles, may be suppressed with the |
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noise rejector. |
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Note that some forms of interference cannot be suppressed. |
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Tune |
- |
The radar receiver can be tuned automatically or manually. |
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Auto/Manual |
Automatic |
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(by |
To adjust it from MaxSea: |
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default) |
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- Manual |
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Click on the Tune Status line to display the Pop-up menu |
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Choose receiver tuning method Automatic or Manual |
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Press [ENTER] to validate. |
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Tune |
% 0-100 |
To Adjust the Tune value when working with Manual Tune Status: |
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Control |
(48% by |
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Click on the Tune line to display the Pop-up menu |
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default) |
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Adjust the range from 0 to 100% using arrows or modify it directly by entering |
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the desired percentage value |
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Press [ENTER] to validate. |
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2nd Echo |
Off (by |
1. Check the Box to reject 2nd Echo signal |
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Rejection |
default) |
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Press [ENTER] to validate. |
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On |
In certain situations, echoes from very distance targets may appear as false echoes |
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(second-trace echoes) on the screen. This occurs when the return echo is received |
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one transmission cycle later, or after a next radar pulse has been transmitted. |
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Stby / Tx |
Standby |
To choose the Radar receiver transmission mode: |
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Transmit |
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Click on the Stdby/Tx line to display the Pop-up menu |
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default) |
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Choose transmission status Standby or transmit |
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MaxSea Operator Manual version 12.6
3. Press [ENTER] to validate.
Radar Image Overlay on Chart
Displaying Radar Image Overlay on Chart
There are several ways to use Radar with your MaxSea including radar overlay.
You can display several windows and choose one of them to show your radar overlay. Radar overlay is when the radar image is viewed on the top of the chart.
When First running MaxSea the Radar overlay button is turning on by default: 
and the Radar overlay palette settings appears in the chart toolbar.
If the Radar is power off or the , the "No Radar Source" warning will appear on the chart.
To display the radar overlay on the chart :
•Click the "Radar Overlay" information button in the chart toolbar to toggle Radar display on/off : 
•Click the down arrow to its right will show the drop down list of available Radar display:
1.Choose Trails to display moving historic (second trace echo).
2.Choose Rings to display them on the chart.
If the Radar unit is turned on and is properly connected to the computer. The Radar image provides on the opened chart is automatically displayed in the radar operating area as shown below:
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Radar OVERLAY
To center on the chart in the radar operating zone, simple click the "Auto center" button in the Chart toolbar and choose "NavNet Radar" in the drop down list.
Depending on your Radar you can configure Radar overlay with MaxSea to:
1.Get the best radar picture by changing the gain for example.
2.Modify the radar picture display by changing the echo color for example.
3.Set up the signal processing.
4.Set up the guard alarm
5.Receive Radar ARPA or AIS Data information in MaxSea
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MaxSea Operator Manual version 12.6
You will learn in this section how to :
1.Acquire Radar Targets in MaxSea
2.Display Radar Target's Vectors and History
3.Obtain Information on a Radar Target
4.To Free a Radar Target
See also related Topics for getting more information:
1.Setting Up Data Source Input
2.Setting Up Radar System
3.Targets Overview
Radar Range
Range control
The range defined the Maximum distance from the GPS position to the Radar echo displayed on chart. Radar Overlay Range controls can be directly set from Tools Bar [R+] and [R-]
Click on the corresponding button to adjust the radar range setup
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