Icom MR-570R [18/49] I off center function

BASIC OPERATION

The followings are typical basic operation examples,

which may hinder radar reception (sea clutter, precip-

itation interference and echoes from other radar).

■ SEA function

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.

■ RAIN function

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.

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.

Adjust SEA control

Echos from sea waves

Adjust RAIN control

Small echos

■ OFF CENTER function

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 [ ]/[ ]/[ ]/[ ] key to move the cursor

where you want to shift the center of the screen.

• 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.

With OFF CENTER on

Normal screen