Simrad NSS7 Installation Manual Page 49
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Using the radar | NSS Operator Manual
MARPA targets
If the NSS includes a heading sensor, the MARPA function (Mini Automatic Radar Plotting Aid)
can be used to track up to tem radar targets.
You can defi ne alarms to notify you if a target gets too close. Refer “MARPA target settings” on
page 47.
MARPA tracking is an important tool for collision avoidance.
Note: MARPA requires heading data for both the radar and the NSS .
MARPA target symbols
The NSS system use the target symbols shown below.
Symbol Description
Acquiring MARPA target. Typically it takes up to 10 full rotations of the scanner
Tracking MARPA target, not moving or at anchor.
Tracking and safe MARPA target with extension lines.
Dangerous MARPA target.
A target is defi ned as dangerous based on the CPA, TCPA and AIS Range
settings. Refer “Vessel alarm settings” on page 48.
When no signals have been received within a time limit a target will be defi ned
as lost.
The target symbol represents the last valid position of the target before the
reception of data was lost.
Selected MARPA target, activated by tapping on the target icon.
The target will return to default target symbol when the cursor is removed.
Tracking MARPA targets
1. Tap on the target on the radar panel
2. Select Acquire targets from the menu
3. Repeat process for more targets
Once your targets are identifi ed, it may take up to 10 radar sweeps to acquire and then track
the target.
Cancelling target tracking
When targets are being tracked, the radar menu will expand to include options for cancelling
individual targets or to stop the tracking function.
Cancel tracking individual targets by tapping the icon before activating the menu.
Viewing target information
Basic target information can be shown in the data bar.
You can also use the Tools pages to view information about targets. See page 79 .
MARPA target settings
Several vessel settings defi ne alarm limits and how the targets are displayed on your radar
image.
- Operator Manual 1
- Copyright 3
- Warranty 3
- Declarations and conformance 3
- About this manual 3
- The software 4
- Contents 5
- 87 Menu and dialog overview 8
- 90 Index 8
- Introduction 9
- The NSS screen 10
- Pages overview 12
- Settings 12
- Basic operation 13
- The menus 14
- Dialog boxes 14
- Placing the cursor 15
- Charts 16
- Placing waypoints 17
- Creating routes 17
- Dragging waypoints 17
- Measuring distance 17
- Chart overlay 18
- Using 3D charts 18
- Vessel mode 19
- Explore mode 19
- Navionics chart options 20
- The chart settings panel 21
- 3D boat selection 22
- Synchronize 2D/3D chart 22
- Waypoints 23
- T r acks 24
- Creating a new track 25
- Track settings 25
- Navigating with the NSS 26
- Arrival radius 27
- O course (XTE) limit 27
- Arrival alarm 27
- Loran settings 28
- Data elds 29
- The course line 29
- Vessel symbol 29
- O course limit 29
- Data elds 29
- Using the autopilot 30
- Power steering (NFU) 33
- Follow-up steering (FU) 33
- AUTO mode (auto compass) 33
- Zigzag-turns 35
- Square-turn 35
- Lazy S-turn 35
- NoDrift mode 37
- Sailing with the autopilot 38
- Tacking in Auto mode 39
- Tacking in Wind mode 39
- Wind steering and navigation 40
- Auto-hide 41
- Crescent lights 41
- Chart compass 41
- Locking an NSS unit 41
- Sea state lter 41
- Tack time 42
- Tack angle 42
- Wind function 42
- VMG optimizing 42
- Layline steering 42
- Automatic steering 43
- Installation 43
- Transmit 44
- Optimizing the radar image 45
- Positioning the radar center 45
- T rue motion 46
- Using the cursor 46
- Range rings 46
- EBL/VRM 46
- Radar options 47
- Heading up 48
- North up 48
- Course up 48
- MARPA targets 49
- Target trails and safe rings 50
- The vessels extension lines 50
- Defi ning 50
- Radar settings panel 51
- Auto range 52
- Preset range levels 52
- Custom range 52
- Bottom lock 53
- Auto gain 54
- Pausing the echosounder 55
- Echo options 56
- StructureScan™ overlay 57
- Overlay downscan 58
- DownScan 59
- SideScan 60
- Zooming 60
- Adjusting the color settings 61
- Pausing StructureScan™ 62
- Structure options 62
- The Instruments panels 63
- Using AIS 64
- Radar pages 65
- Chart pages 65
- Filtering the targets 66
- Speed and course indication 66
- AIS icon orientation 66
- Enabling audio 67
- The audio media bar 67
- Operating the audio source 68
- Audio playback 69
- Using the FM/AM radio 69
- Using Sirius radio 70
- The weather display 71
- Weather symbology 72
- Weather alarms 73
- Weather reports 73
- Using Video 74
- Mirroring the video image 75
- The video standard 75
- BEP CZone 76
- The CZone info panel 77
- The alarm system 78
- Autopilot section 79
- The Tools page 80
- W aypoin ts/routes/tracks 81
- T rip Log 81
- Sun/moon 81
- Customizing your system 83
- Changing system settings 84
- GPS source 86
- Speed, Course and Route 86
- Set start position 86
- Maintenance 87
- Backing up your system data 88
- Menu and dialog overview 89
- Insight chart database 90
- Navionics chart database 90
- Index 92
- *988-10102-002* 96
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