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2. Radar settings, enhancement and data processing of the radar image
2.1 Gain/Sea/Rain
Adjust Rain, Sea and Gain with the buttons.
Normally adjust Gain at long range and remove sea at short distance with sea, then you should normally be able to change the
scale without having to readjust on these.
[SEA], Manual:
Mutes sea echo with selected STC level
[SEA], Auto:
Automatically mutes sea echo and tries and keeps level around the entire boat. In bearings where there is no
sea echo, the sensitivity is not reduced compared to manual STC, so that echoes and land are displayed with
normal strength. You can also use manual adjustment of extra damping by turning the STC knob.
[RAIN] Manual:
Suppresses echo from rain and snow effect is determined by setting the rain button.
[RAIN] Auto:
Automatically suppresses echoes from rain and snow in the direction of rain / snow echoes. This mode only
attenuates rain / snow echoes even with scattered rain showers.
Original radar image without STC or Rain attenuation
Auto SEA Function
Auto SEA + zero Rain
Mute noise with SEA auto + 40% and 0% manual Rain
JMR-5400 User Manual 20201214 temp
Auto RAIN function
Auto rain
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