Adjust Gain [Gain / Pl]; Suppress Sea Clutter [Auto-Sea] - JRC JMA-5912-6 Instruction Manual

3.2.4

Adjust Gain [GAIN / PL]

If the gain is too high, unnecessary signals including
receiver noise and false video increase resulting in
reduction of visibility of targets.
On the contrary, if the gain is too low, targets including
ships and dangerous objects may not be clearly indicated.
Procedures 1
3.2.5

Suppress Sea Clutter [AUTO-SEA]

When using the sea clutter suppression function, never set
the suppression level too high canceling out all image
noises from the sea surface at close range.
Detection of not only echoes from waves but also targets
such as other ships or dangerous objects will become
inhibited.
When using the sea clutter suppression function, make
sure to choose the most appropriate image noise
suppression level.
CAUTION
Adjust noise of the display by turning the [GAIN / PL] dial until targets
can be easily observed.
Turning [GAIN / PL] dial clockwise increases gain.
Turning [GAIN / PL] dial counterclockwise decreases gain.
By increasing receiving gain, the range to observe radar video is widened.
To observe densely crowded targets or short-range targets, reducing the receiving gain will
enable the targets to be easily observed.
CAUTION
3-7