[ Sweep Timing Adjustment ] Use omnipad to straighten target and press ENTER key.
Correction 0.000 nm
<Press MENU for inst setup>
Figure 3-5 Sweep timing adjustment
message
4.Operate the trackball to straighten the tar- get selected at step 2, and then press the [ACQ/ENTER] key.
1.Select “13. STC Curve” from the Installa- tion Setup menu and press the [ACQ/EN- TER] key.
2.Select STC curve desired;
Sharp: The effective range of the [A/C SEA] control is relatively short.
Std: Between Sharp and Gentle.
Gntl (Gentle): The effective range of the [A/C SEA] control is relatively long.
3. Press the [ACQ/ENTER] key.
3.6 Adjusting MBS
(Adjustment range: 0.00~0.25)
Main bang, a large filled circle which appears at the display center on short ranges, can be suppressed as follows:
1.Transmit on long range about 10 minutes.
2.Adjust the gain to show a small amount of noise on the display.
3.Change to the 0.125 nautical mile range and adjust the [A/C SEA] control.
4.Select “11. MBS Adjustment” from the In- stallation Setup menu and press the [ACQ/ENTER] key. The following mes- sage appears:
[MBS Adjustment] Set value by
Correction 000
<Press MENU for inst setup>
Figure 3-6 MBS adjustment message
5.Operate the trackball to suppress main bang (adjustment range: 000 to 025).
6.Press the [ACQ/ENTER] key.
3.7 Selecting STC Curve
The STC curve changes with respect to the antenna height above the waterline. The de- fault STC curve can be maintained in most cases. If necessary the STC curve can be changed as follows:
3.8 Setting a Dead Sector
When the scanner is installed at a close dis- tance in front of the wheelhouse, the radar should be set not to transmit within that area, to prevent microwave hazard. The dead sec- tor area graphic can be turned on/off on the OTHERS menu.
1.Select “7. Dead Sector” from the Installa- tion Setup menu and press the [ACQ/EN- TER] key.
2.Operate the omnipad to enter starting point of sector (in figures).
3.Press the [ACQ/ENTER] key.
4.Operate the omnipad to enter ending point of sector (in figures, Max: 270°).
5.Press the [ACQ/ENTER] key.
Note: This setting should be done after other adjustment are finished.
Dead sector
