Raymarine E90W User Reference Handbook page 144

Parameter Descriptions
Own Vessel Safe Zone The safe zone is a ring,
centred on your boat,
within which a target is
considered dangerous
if it will enter this zone
within the Time to Safe
Zone period (see below).
Time to Safe Zone If a target enters your
safe zone within this time
period, it is considered
dangerous.
Safe Zone Ring Controls whether the
safe zone ring is
displayed or hidden
on screen.
Using MARPA
Acquiring a MARPA target to track
In the radar application:
1. Select the TARGET TRACKING softkey.
2. Move the cursor over the target to be acquired.
3. Select the ACQUIRE TARGET softkey.
The "target being acquired" symbol is displayed. If the target is
present for several scans, the radar locks-on to the target, and the
symbol changes to "safe target" status.
Cancelling a MARPA target
In the radar application:
144
1. Move the cursor over the relevant target.
Options
2. Press the CANCEL TARGET softkey.
• 0.1 nm
3. Alternatively, display the MARPA target list by pressing the
• 0.2 nm
4. Using the trackpad, select the relevant MARPA target from the
• 0.5 nm
• 1.0 nm
5. Press the CANCEL TARGET softkey.
• 2.0 nm
• 3 min
• 6 min
• 12 min
• 24 min
• Visible
• Hidden
TARGET TRACKING, then MARPA LIST softkeys.
list.
E-Series Widescreen User reference