JRC JMA-2343, Instruction Manual

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3.3.6 Adjusting the tuning
Please refer to "3.1.2 Tuning operation".
3.3.7 Adjusting the sensitivity
Please ensure that the sensitivity adjustment is made to an optimal level when
undertaking monitoring.
If the sensitivity is too low, hazardous objects, ships and other floating objects
may not be displayed.
If the sensitivity is too high, receiver noise at the PPI screen will increase and this
may impair monitoring.
(a) Turn the [Gain] control.
・
When the control is turned in the counterclockwise direction, the sensitivity de-
creases and when the control is turned in the clockwise direction, the sensitivity
increases.
・
In general, optimal adjustment of sensitivity is as follows.
The image size of the echo from the intended target is maximized.
It does not come into contact with echoes from other targets.
The image of the echo is
small as the sensitivity is
too low. The sensitivity has been
adjusted to an optimal level. Images overlap as the sen-
sitivity is too high.
Attention