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1. OPERATIONAL OVERVIEW
1-24
1.19.6 Choosing target strength which triggers target alarm
You may choose the target strength level which triggers the alarm as follows:
1. Press the MENU key to open the menu.
2. Choose the Initial sub menu from the System menu and the press the ENTER key.
3. Choose Alarm Level and press the ENTER key.
4. Choose the echo strength level which you want to trigger the target alarm.
5. Press the ENTER key.
6. Press the MENU key to close the menu.
1.20 Off Centering the Display
Own ship position, or sweep origin, can be displaced to expand the view field without switching to
a larger range scale.
The display may be off centered manually, or automatically according to ship’s speed. Press the
OFF CENTER key successively to choose desired off centering method or turn off centering, in
the sequence of manual, automatic, off. OFF CENTER(M) or OFFCENTER(A) appears at the top
left corner on the display when off centering is enabled. Note that off center is not available on the
96 nm range scale.
1.20.1 Automatic off center
The amount of automatic shift is calculated according to ship's speed, and the amount is limited
to 75% of the range in use. The formula for calculating automatic shift is shown below.
For example, if you set the shift speed setting for 15 knots and the ship is running at 10 knots the
amount of shift will be 50% of the effective display area.
Choosing speed to use
1. Press the MENU key to open the menu.
2. Choose the Initial sub menu from the System menu and press the ENTER key.
3. Choose Shift Speed and press the ENTER key.
4. Choose the speed to use and press the ENTER key.
5. Press the MENU key to close the menu.
Low
Med
High
Ship's speed
Shift speed settin
g
X 0.75 = Amount of shift(%)
(1kt-99kt)
15kt