Koden MDC-2000BB Series, Operation Manual

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Chapter 1 Basic Operation MDC-2000BB Series
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1.6 Switch-over of Range
The observation range can be changed.
Change of Range
1 Press the [- RANGE +] key.
When pressing the [+] key, an image shrinks
but the observation range expands.
When pressing the [-] key, the observation
range becomes narrow but the enlarged
surroundings around own ship can be seen.
The value of the range is displayed at the
upper left side of the screen.
Change of Sub-screen Range
Change the range of the right screen
(sub-screen) of the PPI/PPI menu.
For the PPI/PPI screen, refer to 2.4 Display
Select.
1 Press the [- SUB RANGE +] key.
When pressing the [+] key, an image shrinks
but the observation range expands.
When pressing the [-] key, the observation
range becomes narrow but the enlarged
surroundings around own ship can be seen.
The value of the range is displayed at the
upper left side of the screen.
1.7 Gain Adjustment
Adjust the gain according to the distance range
and reflection from the sea surface/rain/snow to
observe an image easily.
When the [GAIN/PPI] knob is rotated, the GAIN
bar is displayed. The number in the GAIN bar
varies between 0 and 100.
Adjustment of Main-screen Gain
1 When rotating clockwise the [GAIN/PPI]
knob, the gain increases.
When rotating counterclockwise the
[GAIN/PPI] knob, the gain decreases.
● When the short distance or targets are
crowded
, if the gain is reduced, the image
can be easily seen.
● When the long distance, if the gain is
increased, it is effective but due to increase of
noise, the image becomes hard to be seen.
Adjustment of Sub-screen Gain
Adjust the right screen (sub-screen) in the
PPI/PPI menu.
For the PPI/PPI screen, refer to 2.4 Display
Select.
1
Press the [GAIN/PPI] knob.
The GAIN bar moves on the sub-screen.
2
When rotating clockwise the [GAIN/PPI]
knob, the gain increases.
When rotating counterclockwise the
[GAIN/PPI] knob, the gain decreases.
Own ship
Land
Result Picture after adjustment by GAIN :
<Picture of too low gain>
Own ship
Land
Own ship
Land
<Picture of adjust gain>
<Picture of too much gain>