Setting F-shift (data setting window: SONR•BEAM,

SONAR)

If interference cannot be suppressed by the interference rejector (IR) or Tx cycle, change the setting of F-SHFT from 1 to 2.

Noise limiter (data setting window: SIGNAL, SIGNAL PROCESS)

Weak, unwanted reflections, colored light-blue or green, appear when the water is dirty, plankton layers exists, or due to ship’s noise. The noise limiter (NL) can reduce the effects of these unwanted reflections–raising the setting causes them to become bluish to background color. Normally a setting of 3 or 4 is suffi- cient.

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Furuno CSH-53 manual Setting F-shift data setting window Sonrbeam, Noise limiter data setting window SIGNAL, Signal Process