Chapter 3 Setup after installation
MDC-2900 Series
3-14
0092629012-07
3. Follow the steps below.
Select [MAINTENANCE] => [PRESET] => [SEA AUTO LAND] => to highlight the last digit value.
Enter the same value by rolling the trackball up and down as SEA AUTO SEA. And then press
[ENT] key.
3.3.4 Change of maximum value of [SEA] knob
The use of manual SEA suppression allows the suppression effect at the maximum position of
[SEA] knob to be adjusted:
(1) Set the range at 12 NM range, [RAIN] and [SEA] knobs at 0, [GAIN] knob at scale 8 and
[BRILL] at maximum.
(2) Turn VRM 1 ON and set VRM at 8.0 NM.
(3) Put the cursor on IR 3 on the screen, press [ENT] key to select OFF. When IR is turned OFF,
white noise on the screen increases. Keep [GAIN] knob at scale 8.
(4) Set [SEA] knob at scale 10 (maximum).
With the trackball, follow [MAINTENANCE] => [PRESET] => [SEA MAN MAX] => and
highlight of the last digit of entry frame for numerical values.
(5) Move the trackball up and down watching white noise on the screen to increase the set
value of [SEA MAN MAX] from 0. When the white noise on the screen disappears from the
area between the center and 8 NM, stop the movement of the trackball and press [ENT] key
for setting.
(6) After completion of all setting, return to IR3.
The set value of [SEA MAN MAX] is applied to the entire ranges.
3.3.5 Use of PRE-SEA suppression under the Manual SEA
This setting is a function to make the value set under Sea suppression effective even when [SEA]
knob is set at the minimum. Due to the raise of the minimum value, this function allows the effect
against the angle of rotation of the knob to be moderated and the adjustment with the knob to be
made easier. This adjustment can be used in common for the entire range. Please carry out the
adjustment at mild state of sea.
(1) Set the range at 0.75 NM, knobs of [RAIN] and [SEA] at 0, knob of [GAIN] at scale 8 and
[BRILL] at the maximum.
(2) Press [MENU] key and follow the process of [MAINTENANCE] => [PRESET] => [SEA MAN
MIN] => and highlight of the last digit of entry frame of numerical value with trackball.
(3) Change the numerical value with turning the trackball up and down, erase sea clutter on the
screen that may be generated by dust and birds, and set not to erase bondens and seaway
buoys. Press [ENT] key for setting.
