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3. SETTING AND ADJUSTMENT
3-3
3.1.5 Other settings
ECHO ADJ menu setting
CABLE ATT ADJ
Before adjusting, set the radar as follows:
IR: 2, ES: off, EAV: off, 24 nm range, long pulse
To adjust the cable attenuation manually, select MANUAL. Then, rotate the wheel so
that noise just appears on the screen when the gain is set to 80. Default setting is 30
for the antenna cable length of 15 m. The setting range is 0 to 73. To adjust automat-
ically, select AUTO. The message “CABLE ATT ADJ” appears in red at the bottom of
the screen. It takes about five minutes to complete the adjustment, after which the ra-
dar goes into stand-by.
NEAR STC CURVE, MID STC CURVE and FAR STC CURVE
Use the default setting. Change the setting if desired according to sea condition.
RING SUPPRESSION
This is mainly used to remove “ring” noise which appears in the waveguide-type radar.
Adjust so the rings disappear at the range of 0.125 nm. The setting range is 0 to 255.
SCANNER menu settings
BLIND SECTOR 1 and BLIND SECTOR 2
Set area (up to 2) where no radar pulses will be transmitted, and heading should be
adjusted before setting any blind sector. For example, set the area where an interfer-
ing object at the rear of the scanner would produce a dead sector (area where no ech-
oes appear) on the display. To enter an area, enter start bearing relative the heading
and dead sector angle. To erase the area, enter 0 for both the START and ANGLE
sections. The setting range of START is 0 to 359° and ANGLE is 0 to 180°.
ANT REVOLUTION
THis is used for antenna maintenance by serviceman.
Note: Select OFF at ANT SW to prevent the antenna rotation. As for ANT SPEED,
select STBY to prevent transmission while the antenna is stopped.