Rain Function; Sea Function; Off Center Function - Icom MR-570R Operating Manual

4
BASIC OPERATION
The followings are typical basic operation examples,
which may hinder radar reception (sea clutter, precip-
itation interference and echoes from other radar).

RAIN function

Small echos

SEA function

Echos from sea waves

OFF CENTER function

Normal screen
12
Adjust RAIN control
Adjust SEA control
With OFF CENTER on
This function eliminates reflection echoes from rain,
snow, fog etc.
• Adjust the lowest level to deactivate the control function.
• NOTE: DO NOT reduce the reflection 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 ob-
jects within a radius of 8 miles to eliminate sea clutter.
• Push and hold [ADJ] for 0.5 sec. to activate the automatic
control function.
WARNING:
The [SEA] control reduces the re-
ceiver sensitivity of objects within 8 miles. Therefore,
caution and careful adjustment are necessary when
using the [SEA] control.
Small objects may not be displayed on the screen
when strong echoes from the rain or the island within
1 NM while automatic SEA function is activating.
The scanning area can be shifted in a desired direc-
tion and can be enlarged partially. This is useful when
the Head-up* 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 available within, and up to a 24 NM range.
*This function is not available in the TM screen.
q Push
]/ ]/ ] ]
• Max. offsetting is up to 56% of the screen.
w Push [ALM] and [MODE] simultaneously to shift
the screen.
e Push [ALM] and [MODE] simultaneously again to
return to the normal screen.