Control Sensitivity [Gain]; Suppress Sea Clutter [Sea] - JRC JMA-610 Series Instruction Manual

3.4.5 Control Sensitivity [GAIN]

Procedures 1
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.

3.4.6 Suppress Sea Clutter [SEA]

Procedures 1
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.
Adjust noise of the display by turning the [GAIN] dial until targets can be
easily observed.
Turning [GAIN] control clockwise increases gain.
Turning [GAIN] control counterclockwise decreases gain.
When using the [SEA] 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] function, make sure to choose
the most appropriate image noise suppression level.
Adjust the sea clutter returns of the display by turning the [SEA] dial
until targets can be easily observed.
CAUTION
CAUTION
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