Marpa - Raymarine E Series Reference Manual

81244_4.book Page 207 Thursday, January 31, 2008 1:53 PM
Chapter 8: Using the Radar (Digital)
6nm
6nm
You can adjust the sensitivity of guard zones on the Alarms Setup Menu. For more
information, see
Guard zones only operate when the whole zone is displayed on the screen. To avoid
inappropriate alarms, they become active ten seconds after being placed or edited.
To place a guard zone
1. Press the TARGET TRACKING softkey.
2. Press the MONITOR IN ZONES softkey.
3. Toggle ZONE 1 or ZONE 2 to ON, as appropriate.
4. Press the corresponding SET UP ZONE softkey.
5. Choose your zone shape.
6. Set the limits of the guard zone using the rotary controller.
7. Press OK.

MARPA

The Mini Automatic Radar Plotting Aid (MARPA) provides target-tracking and risk-
analysis features. MARPA obtains detailed information for up to 25 automatically
tracked objects (using a digital radar) and provides continuous, accurate and rapid
situation analysis.
To use MARPA, you need a fast heading sensor.
Note: Marpa will NOT operate with dual range switched on.
Head-Up
Head-Up Relative Motion
Alarm Setup Menu
Circular
Guard Zone
Rings 1nm
Sector
Guard Zone
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