RA83/84/85/93/94/95 Series
Chapter 5
Operation Manual
Basic Operation
turned on, the anti-clutter sea control is defaulted to manual mode. To set the auto
Anti-clutter mode, select AUTO1, AUTO2, or HARBOR by ADJUST/ADJUST MENU.
The receiver gain will be automatically set and the manual SEA clutter control will
accordingly become inactive. The HARBOR STC provides a preset Anti-clutter sea
effect, optimized for narrow areas. The AUTO1 and AUTO2 STC provides a
hands-free Anti-clutter sea effect. The mode will display as AUTO1, AUTO2, HARBOR,
and MANUAL. In HARBOR and Auto Anti-clutter Sea modes, the manual control is set
ineffective.
5.5.5 Anti-clutter RAIN control
The RAIN control is used to reduce the clutter echo appearing on the screen caused
by the rain or snow. The effect of the anti-clutter rain control increases as you turn the
control clockwise and is the greatest at a fully clockwise position. The anti-clutter
RAIN control can be switched to either a manual or auto mode by ADJUST/ADJUST
MENU.
When first turned on, the anti-clutter RAIN function is defaulted to manual mode. To
set the auto RAIN-clutter control, select AUTO1 or AUTO2 by ADJUST/ADJUST
MENU. The clutter echo from rain or snow will be reduced automatically and the
manual rain clutter control will become inactive.
5.5.6 Bearing measurement using a single EBL
(1) Activate the 1st EBL from the DISP/MARK menu with select ON. The EBL will be
displayed in a dashed line with the bearing display in the bottom left of the
screen. An arrow mark will be shown on the front of the digital display to indicate
the EBL is active.
(2) Select the bearing mode if necessary, either RELATIVE or TRUE by DISP/[BRG
TRUE/REL] MENU.
(3) Rotate the EBL control to measure the bearing of a target. To measure a single
target, always set the EBL on the center of the target. To measure the bearing of
the edge of a landmass, move EBL towards the inside of the landmass by half of
the aerial horizontal beam width.
(4) To erase the EBL, select OFF from the DISP/MARK/1st EBL menu item.
5.5.7 Bearing measurement using two EBLs
(1) Activate the 2nd EBL from the DISP/MARK menu with select ON. The 2
nd
EBL will
be shown with the 1
st
EBL in a dotted line with the bearing display underneath the
1
st
EBL bearing display. An arrow mark will be shown on the front of the digital
display to indicate the selected EBL is active.
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