Furuno CH-500, Руководство оператора

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1. OPERATIONAL OVERVIEW
1-7
1.6 How to Adjust the Gain
The GAIN knob adjusts the sensitivity of the receiver, which can hide noise and other
unwanted echoes. A high gain setting increases signal strength and can show exces-
sive noise, as well as smaller, hard to detect echoes. A low gain setting eliminates
noise and gives a clearer picture, however smaller echoes may also be removed.
1. Operate the GAIN knob and the gain setting dialog box appears at the bottom of
the screen.
2. Turn the GAIN knob counter-clockwise to reduce the gain.
Turn the GAIN knob clockwise to increase the gain.
Note: If [Gain Setting Protect] in the [System Setting 2] menu is set to [ON] and the
GAIN knob is operated, the message "Press the gain knob to adjust the gain." ap-
pears. Press the GAIN knob, then adjust the gain as necessary.
Adjust the gain properly.
Too little gain may present no picture.
Too much gain shows excessive noise on
the picture.
CAUTION
Rotate the gain knob to change value.
Gain 5.5 (0~10) :