Users Manual Part 6

3. ADJUSTMENTS
3-5
• The range of target echoes is incorrect.
1. Set the GAIN, A/C SEA and A/C RAIN controls shown below.
GAIN: 80
A/C SEA: Fully counterclockwise (OFF)
A/C RAIN: Fully counterclockwise (OFF)
2. Open the [RADAR INSTALLATION] menu, then select [ECHO ADJUSTMENT]
menu.
3. Select [TIMING ADJ VALUE] to set the value for adjustment timing manually. The
setting range is 0000 to 4095. The default settings for each radar are shown be-
low;
• Default for magnetron radar: [325]
• Default for solid state radar: [43]
4. After the adjustment is completed, set the radar to the minimum range. Confirm
that no echoes are "missing" at the center of the radar screen.If echoes are miss-
ing, do step 3 again.
3.4 How to Suppress Main Bang
Main bang is the clutter at the center of the screen that you typically see on the radar
display, and it may mask close-in targets. If main bang appears at the screen center,
suppress it as follows.
1. Transmit the radar on a long range and then wait ten minutes.
2. Adjust the gain to show a slight amount of noise on the display.
3. Select the 0.125 NM range, and turn off the A/C SEA and A/C RAIN controls.
4. Show the [RADAR INSTALLATION] menu, then select [ECHO ADJUSTMENT].
5. Select [MBS LEVEL], then set a value that causes the main bang to faintly disap-
pear. The setting range is 0 to 255 (default: 0).