Noise Rejection; Zoom - Ninglu FS117 Operation & Installation Manual

Operation
N R
OISE EJECTION
N R is to reject noise interference from nearby fishing vessels.
OISE EJECTION
Each press of the 【 】or【 】key changes the ability for rejecting the
interference as follow:

ZOOM

Bottom-lock zoom Mode
If Bottom lock zoom is on, the zoom section moves so the bottom is always
displayed in the zoom section, regardless of changes in depth.
Bottom lock zoom is not available in dual-frequency mode or range relay
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