Contrast Control; Sea Clutter Suppresion - JRC JMA-9832-SA Instruction Manual

......Contrast Control

The contrast of the radar video display can be adjusted in four levels. Each time the [BRILL VIDEO]
switch is pressed, the contrast will change the mode in the following order:
The current mode is indicated at the lower right of the radar display. (The VIDEO indication will
change to the PANEL indication in several second.) Adjust the [BRILL VIDEO] switch to obtain the
best-to-see video with optimum contrast.
Attention
In the AUTO SEA mode, there are cases in which the targets are not displayed because the sea
clutter returns are suppressed in a simple way.
Use the manual [SEA] control during sailing under normal conditions.
In the AUTO RAIN mode, there are cases in which the targets are not displayed because the
rain/snow clutter returns are suppressed in a simple way.
Use the manual [RAIN] control during sailing under normal conditions.
......Sea Clutter Suppression
This control is used to reduce the receiving sensitivity on a short range to suppress the sea clutter
returns.
Clockwise rotation of the [SEA] control can suppress sea clutter returns more effectively. Be careful not
to suppress sea clutter excessively. Otherwise, small buoys and boats may disappear from the radar
display.
When setting
suppressed depending on their intensity levels. This setting is used for the case that the sea clutter
returns are different in their directions.
When setting 1.SEA/RAIN
MANUAL mode. (Refer to page 3 - 3)
Note: It is impossible to use both the AUTO SEA mode and the AUTO RAIN mode at the
same time.
BRILL VIDEO .......................................
BRILL
VIDEO
SEA
SEA
1.SEA/RAIN to 2. AUTO SEA
to 1. MANUAL
AUTO
3 – 12
3.3 PREPARATION
.......................................
in the AUTO Menu, sea clutter returns can be
in the AUTO Menu, the mode is changed into the
. ..
/ / /
.
3