MDC-7000/7900 Series
Chapter 1 Radar Basic Operation
0093169004-03
1-7
For MAN RAIN adjustment, move the cursor to or and click the
left button
.
RAIN MAN (manual) adjustment
1
Turn RAIN knob clockwise to increase anti-clutter effect.
Turn RAIN knob counterclockwise to decrease anti-clutter effect.
Turn GAIN clockwise until sea clutter is visible on the display.
Strong
Weak
RAIN
2
Use anti-SEA (AUTO SEA or MAN SEA).
3
While observing the display, suppress RAIN clutter outside of anti-SEA effective area by turning
RAIN knob clockwise. Adjust RAIN so that sea clutter is lightly visible.
4
Intensity of RAIN clutter is affected by weather. Adjust by RAIN knob according to weather change
by watching the display.
Note:
• In typical environment RAIN should be turned all the way down via RAIN knob, and no white level
should be indicated by RAIN window.
• Turning the knob to the right shows profiles of the targets hidden in the rain/snow image, but care shall
be taken that small target may be hidden and not displayed.
• Small target becomes harder to detect when RAIN is used together with SEA.
CFAR (Constant False Alarm Rate) adjustment
1
Turn RAIN knob clockwise to increase anti-clutter effect.
Turn RAIN knob counterclockwise to decrease anti-clutter effect.
Strong
Weak
RAIN
2
Turn RAIN knob clockwise to get even low (weak) clutter while watching the display.
Note:
• In typical environment CFAR should be turned all the way down via RAIN knob, and no white level
should be indicated by CFAR window.
• Turning the knob to the right shows the targets hidden in the rain/snow image, but care shall be taken
that small target may be hidden and not displayed if over adjusted.
