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NAVMAN 

8120/8084 

 Fuel, AIS, & Radar Addendum

16

Adjusting the boundaries of a radar guard 
zone

To adjust the boundaries and change the area 
that is covered by a radar guard zone:
1  From the radar window, press 

 then 

select 

Guard Zone.

 

2  Select 

Zone

 then 

1

 (radar guard zone 1) 

or 

2

 (radar guard zone 2).

3  Select Adjust to display the current 

boundaries of that radar guard zone. The 
following information is also shown in the 
top left corner:
• 

Guard Zone

: The number shows the 

radar guard zone that is selected.

• 

Sector or Circular

: The shape of the 

radar guard zone.

• 

INR

: The distance between the inner 

boundary and your boat.

• 

OUR

: The distance between the outer 

boundary and your boat.

• 

WDT

: The angular width of the radar 

guard zone (in degrees).

• 

BRG

: The bearing of a line drawn from 

your boat through the centre of the 
radar guard zone (in degrees).

4  Use   and    to select the parameter to 

change. 

5  Then use   and    to change the 

parameter.

Adjusting the sensitivity of the alarm

You can set the sensitivity of the alarm for the 
radar guard zones, to define the size of the 
target that will trigger the alarm. The size of 
target is shown as a percentage. 
100% is maximum sensitivity, meaning that 
very small targets will trigger the guard zone 
alarm. 0% is minimum sensitivity, meaning 
that only very large targets will trigger the 
alarm.  
The same sensitivity setting is applied to 
both of the radar guard zones if both are 
turned on.
To set the alarm:
1  From the radar window, press 

 then 

select 

Guard Zone.

 

2  Select 

Zone

 then select 

1

 (radar guard 

zone 1) or 

2

 (radar guard zone 2).

3  Select Alarm sensitivity then use   and     

to decrease or increase the setting.

Radar setup

Note:

 This option is shown only when the 

radar is enabled (see Manual, 18-3)
1  Press 

 twice to display the Setup 

menu, then select 

Radar

:

Rotation

The current radar rotation is shown in the top 
left corner of the radar screen. If COG data or 
heading data is not available from a compass, 
the radar rotation is automatically set to Head 
up.  
However, you are strongly recommended 
to use a good quality product (such as a 
NAVMAN HS02, HS03 or Autopilot) to provide 
heading data.
If heading data is available from a compass, 
the options are:
•  North up works only when COG data or 

heading data from a heading sensor is 
available. North is always at the top of the 
radar screen.  
You can easily compare the radar screen to 
a chart in North up.

Содержание 8084

Страница 1: ...w w w n a v m a n c o m Fuel AIS Radar Addendum 06 07 Navman 8120 8084...

Страница 2: ...190 mm 7 48 H x 285 mm 11 22 W x 76 8 mm 3 02 D Allow 3 mm clearance on each side for dust cover 8084 Display 213 4 mm 8 4 diagonal TFT color 800 x 600 pixels CPA Closest Point of Approach The closes...

Страница 3: ...m s fuel level is shown on the fuel display tank levels as a red bar The alarm can also be set using the Alarms setup menu Boat speed sensors Selecting a boat speed sensor The fuel calculations can us...

Страница 4: ...nots Gives a ground speed of 6 knots When the current is from ahead ground speed is less than water speed For this example If the boat travels for one hour uses 3 gallons of fuel per hour and has 50 g...

Страница 5: ...ifficult to fill underfloor tanks to the same level twice due to air pockets so the more fuel used the more accurate the calibration To calibrate the sensor s 1 Record the level of the fuel in the tan...

Страница 6: ...nnels This transmission may include information about the vessels MMSI number its call sign name position course heading speed rate of turn and type of vessel This unit can receive and display AIS inf...

Страница 7: ...d on the chart by a red circle around the icon AIS Windows To go to the AIS windows press select More select AIS then press or to select one of the two windows Vessels or Safety msgs rx If there are m...

Страница 8: ...ter by distance Vessels outside the radius selected from our current position are filtered off the chart Default value is set to 300 nm allowing all vessels to be displayed on the chart within that di...

Страница 9: ...play called the PPI Plan Position Indicator Typically your boat is in the centre of the radar window with concentric range rings surrounding it The range rings help you to quickly estimate the distanc...

Страница 10: ...plete the radar enters standby mode and is ready to transmit Selecting standby mode or transmit mode You can quickly change between these two modes 1 From the radar window press and set the Transmit o...

Страница 11: ...suitable height and in a suitable location on your boat side lobe patterns and shadows blind spots caused by obstructions such as funnels or masts will be minimized If you are having problems with the...

Страница 12: ...an offshore environment Changing the sea clutter level If the sea clutter level is set too low a lot of sea clutter will be displayed If the sea clutter level is set too high small targets may not be...

Страница 13: ...rails setting From the radar window press then set the Target trails option to target trails are on or target trails are off Using the VRM EBL Use one or both of the VRM EBL Variable Range Markers Ele...

Страница 14: ...ting VRM Use this to measure the range and bearing between two locations on the radar window such as a headland and a buoy 1 From the radar window press then select VRM EBL 2 Select VRM EBL then 1 VRM...

Страница 15: ...ed so that the radar window is offset from the centre to give you the maximum view ahead Set Offset the PPI centre in the radar window This works only when you are using relative motion RM mode Use th...

Страница 16: ...larm The size of target is shown as a percentage 100 is maximum sensitivity meaning that very small targets will trigger the guard zone alarm 0 is minimum sensitivity meaning that only very large targ...

Страница 17: ...your radar it can cause interference patterns on the radar window Interference patterns always appear in a different place with each sweep They can be randomly scattered bright dots or dotted lines th...

Страница 18: ...e is aligned with the displayed chart and the compass An accurate bearing alignment is particularly important when the radar image is overlaid onto the chart Adjust this on a chart window with the rad...

Страница 19: ...the edge of the radar window often producing a spiral effect Generally the stronger the interference the wider the interference lines a Use the interference rejection feature to reduce interference pa...

Страница 20: ...NAVMAN 8120 Physical Dimensions NAVMAN 8084...

Страница 21: ...Lon 174 44 535 E Lat 36 48 404 S Made in New Zealand MN000753B G Navman 8120 8084 Fuel AIS Radar Addendum...

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