JRC JMA-7710-6 Instruction Manual page 168

[V] Setting the guard zone
To watch for the invasion of another ship and a target or to automatically acquire another ship which invaded,
the guard zone can be set.
RADAR ALARM
RADAR
ALARM
1. FUNCTION
2. AUDIBLE ATA ALARM
3. ATA SECTOR ZONE
(AUTO ACQ)
1. Display the EBL1, EBL2, and first variable range scale.
Procedures Procedures
For the operation method, refer to subsection "3.3.2 Using EBL (Electronic Cursor)
[EBL1 EBL2]" and subsection "3.3.12 Displaying Variable Range Markers [VRM1
VRM2]". (ATA ALARM must be selected.)
2. Press the
3. Press
4. When pressing the
and the radar screen will appear.
5. Align the EBL1, EBL2, and VRM1 to the position where the guard zone is
to be set as shown in the following figure and press the
The shape of the guard zone is set.
(The guard zone width is fixed to 0.5 NM.)
The guard zone can be set at an arbitrary position of 0.5 to 32 NM.
6. Press the
OFF ATA ALARM
OFF ON
GZ
key to open the RADAR ALARM menu.
MENU
3
key to select "ATA SECTOR ZONE".
3
key or
GZ
key to close the display.
MENU
5 – 6
ENT
key, the menu will disappear
ENT
EBL1
VRM1
EBL2
5.1
5
key.