Onwa Marine Electronics KR-1338C v.1 - Manual (Page 34)

2. Operate the omnipad to select "MODE".
3. Press the [ACQ/ENTER] key.
With heading sensor connection the display and the display and the display mode
indication at the top lefthand corner of the display change in the sequence of HU
(heading up), CU (course up), NU (north up) and TM (true motion)when the
[ACQ/ENTER] key is pressed. If there is no heading sensor connection, the disp-
lay mode is always HU.
4. Press the [MENU] key to close the menu.
Note: The radar begins operation with last selected display mode (except course
up) whenever the unit is turned on. Note however that head up is selected when
course up was the last used mode.
Head up
The picture is oriented so the heading line is at the top of the display. This mode
is useful for navigation in congested waters.
Course up
The course up mode shows
heading by the heading line, at the top of the
display. To get heading desired, steer vessel in direction desired, and the show
CU at the top lefthand corner of the display.
North up
North is at the top of the display and the heading line moves with
True motion
True motion displays own ship and moving objects in their true motion.
3.3 Magnifying long range echoes (echo stretch)
Ship's
Ship's
'
"
"
heading.
This mode is useful for determining ship s position and as a navigation monitor on
a nautical chart. The picture is stabilized against yaw of vessel, thereby reducing
of target echoes.
Normally, the reflected echoes from long range target appear on the display as
weaker and smaller blips even though they are compensated by the radar
" "
's internal
circuitry. The echo stretch function magnifies these small blips in all ranges. Two
types of echo stretch are available: ES1 which stretches echoes in bearing direction
and ES2 which stretches them in both range and bearing directions.
To turn the echo stretch on or off;
1. Press the [MENU] key to open the menu.
2. Select ES .
3.Each press the [ACQ/ENTER] key changes the echo stretch function in the seq-
uence of ES1,ES2 and OFF. ES1 or ES2 appears at the top right-hand corner of
the display when echo stretch is on.
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