Furuno 1932 MARK-2 - Manual (Page 18)

3-3
[ Sweep Timing Adjustment ]
Use omnipad to straighten
target and press ENTER key.
Correction 0.000 nm
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.
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 T-ball
and press ENTER key.
Correction 000
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:
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.
3.8 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
Figure 3-7 Dead sector