Furuno GP-1640, Руководство оператора

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4-3
4.4 Erasing Marks
Erasing individual marks/lines
1. Operate the cursor pad to place the cursor
on the mark you want to erase.
2. Press the [CLEAR] key. The mark selected
is erased.
Note: To erase a line, place the cursor on
an edge of the line. The line
segment and the mark selected will
be erased.
Erasing marks/lines in an area
You can erase marks and lines within a square.
1. Press the [MENU] key followed by the
CHART SETUP OPTIONS, TRACK
CONTROL and ERASE T & M soft keys.
2. Press
!
or
"
to select ERASE MARKS
BY AREA, and then press the EDIT soft
key.
The plotter display appears.
3. Move the cursor to the starting point of the
area to erase.
4. Press the START soft key.
5. Press the cursor pad to make a square.
6. Press the END soft key.
You are asked if you sure to erase in the area
which is set above.
7. Press the [ENTER] key, or press the
[CLEAR] key to escape.
Erasing whole marks/lines
You can erase all marks and lines. Be
absolutely sure you want to erase all marks
and lines; erased marks and lines cannot be
restored.
1. Press the [MENU] key followed by the
CHART SETUP OPTIONS and TRACK
CONTROL soft keys.
2. Press the ERASE T & M soft key.
3. Press
!
or
"
to select ERASE ALL
MARKS/LINES, press the EDIT soft key.
You are asked if you are sure to erase all
marks and lines.
4. Press the [ENTER] key to erase, or press
the [CLEAR] key to escape.
4.5 Displaying Track and
Mark Points
Number of track and mark points used appears
in the TRACK STATUS window on the TRACK
CONTROL display. For further details see
page 3-1.