JRC JMA-5208 - Main Bang Suppression Adjustment (MBS Level)

7.4 ADJUSTMENT
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7.4.3 Main Bang Suppression Adjustment (MBS Level)
Main Bang Suppression is adjusted to suppress main bang, a reflection signal from 3D circuit including wave
guide tube, that generally appears as a circular image focusing on the center of the radar display. Optimum
adjustment allows main bang image to remain lightly on the display.
This adjustment is made for settings in the processing circuit of the display unit.
WARNING
Do not change MBS Level/Area unless absolutely
necessary.
Incorrect adjustment may erase targets in point-blank
range and cause collision, resulting in death or serious
injury.
Procedure 1 Perform the following operation before
setting.
x Set the range to 0.125 nm.
x Set the radar video enhance function (ENH).
x Set the correlation processing function
(PROC) to OFF.
x Rotate [AUTO-RAIN] control to the
minimum position (counterclockwise fully).
x Rotate [GAIN/PL] control to the maximum
position (clockwise fully).
x Rotate the [AUTO-SEA] control to achieve
the strength with which main bang can be
judged.
2 Hold down [RADAR MENU] key.
The Code Input Menu will appear.
3 Press [0] key.
4 Move the cursor onto the “ENT” button in the Code Input menu, and
press [ENT] key.
The Adjust Menu will appear.
5 Press [8] key.
The SP/TT INIT Setup Menu will appear.
6 Press [3] key.
The MBS Menu will appear.