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1. OPERATION
4
1.5 Adjusting Display
Contrast, Brilliance
1. With the power turned on, press the
[POWER/BRILL] key momentarily to show
the brilliance/contrast adjustment window.
CONT: 4
LOW HIGH
BRILL:
LOW HIGH
9
BRILL/CONTRAST
[MODE]: TX/ST-BY
[MENU/ESC] : Exit.
Brilliance/contrast adjustment window
2. Press ◄ or ► to adjust contrast.
3. Press ▲ or ▼ to adjust brilliance.
4. Press the [MENU/ESC] key to escape.
Note 1: Windows other than menu windows
are erased when there is no operation within
about 10 seconds.
Note 2: The radar starts up with the last-used
brilliance level after the startup screen
appears. Therefore, adjust the brilliance if it is
too low at startup.
1.6 Choosing the Range
The range selected automatically determines
the range ring interval, the number of range
rings and pulse repetition rate.
Press the [RANGE+] or [RANGE-] key to
choose the range. The range and range ring
interval appear at the top left corner on the
screen.
Range
Range ring
interval
6.0
nm
2.0
RNG 03.2nm
BRG 60.2°
TTG 02H21M
EBL - - - .-°
VRM - - - -nm
Location of range and range ring
interval indications
1.7 Receiver Sensitivity
The [GAIN] key adjusts the sensitivity (gain)
of the receiver. It works in precisely the same
manner as the volume control of a broadcast
receiver, amplifying the signals received.
To set the sensitivity, you first choose the
automatic sensitivity setting which best
matches current sea condition. Then, if
necessary, you may fine tune the sensitivity
manually. The proper setting is such that the
background noise is just visible on the
screen.
If you set up for too little sensitivity, weak
echoes may be missed. On the other hand
excessive sensitivity yields too much
background noise; weak targets may be
missed because of the poor contrast between
desired echoes and the background noise on
the display.
1. Press the [GAIN] key consecutively until
the display shown below appears.
GAIN
20
[GAIN] : A/C SEA MENU
[MENU/ESC] : Exit.
AUTO : MODERATE
MANU
Gain adjustment window