Rain Function; Sea Function; Off Center Function - Icom MR-1000RII Instruction Manual

3
BASIC OPERATION
The following are typical basic operation examples, which may hinder radar reception (sea clutter, precipitation
interference and echoes from other radar).

■ RAIN function

Small echos

■ SEA function

Echos from sea waves

■ OFF CENTER function

Normal screen
9
Adjust RAIN control
Adjust SEA control
With OFF CENTER ON
This function eliminates echoes from rain, snow, fog
etc.
• Rotate the control fully counterclockwise to deactivate the
control function. The RAIN indicator (
• NOTE: DO NOT reduce the echoes too much, otherwise
you may miss weaker targets.
This function serves to eliminate echoes from waves at
close range. Reduce the receiver gain for close objects
within a radius of 8 miles to eliminate sea clutter.
• Rotate the control fully clockwise to activate the automatic
control function. SEA indicator (
left corner of the screen.
WARNING:
The [SEA]/[
duces the receiver sensitivity of objects within 8
miles. Therefore, caution and careful adjustment are
necessary when using the [SEA]/[
Small objects may not be displayed on the screen
when strong echoes from rain or islands within 1 NM
while the automatic SEA function is activated.
The scanning area can be shifted in a desired direction
and can be partially enlarged. This is useful when
Head-up* screen is selected, and you want to enlarge
the bow direction display, or the center of the screen
shifts in the direction of the intersection.
• This function is selectable for 24NM or shorter ranges.
*This function is not selectable in the TM screen.
q Push [p] [q] [t] [u] to move the cursor where
you want to shift the center of the screen.
• Max. offsetting is up to 75% of the screen.
w Push [ALM]/[ ] and [MODE]/[
neously to shift the screen.
e Push [ALM]/[ ] and [MODE]/[
neously again to return to the normal screen.
) disappears.
) appears in the upper
] control re-
] control.
] simulta-
] simulta-