Adjusting The Gain (Sensitivity); Choosing Gain Adjustment Method; Setting Automatic Gain Level; Manual Gain Adjustment - Furuno FR-8062 Operator's Manual

1. OPERATIONAL OVERVIEW
1.10

Adjusting the Gain (sensitivity)

The gain functions to adjust the receiver sensitivity for the best reception of signals of widely
varying amplitudes.
1.10.1

Choosing gain adjustment method

Gain may be adjusted automatically or manually. Push the GAIN control to choose automatic or
manual adjustment alternately. The adjustment method currently chosen is show at the top right
corner of the screen. In the example below the gain adjustment method is "AUTO".
1.10.2

Setting automatic gain level

1. Press the MENU key to open the menu.
2. Choose the Echo menu and press the ENTER key.
3. Choose Auto Gain and press the ENTER key.
Rough
Moderate
Calm
4. Choose the option which best matches current sea condition and press the ENTER key.
5. Press the MENU key to close the menu. Gain is automatically adjusted according to the level
selected.
1.10.3

Manual gain adjustment

Adjust the gain such that noise faintly appears over the entire screen. If the gain is too low weak
echoes will not be displayed and if the gain is too high, weak echoes will be hidden in background
noise.
1. Push the GAIN control to show "GAIN MAN" as the gain adjustment method.
2. Rotate the GAIN control to adjust the gain. Adjust the control so background noise is just visible
on the screen.
1-12
Gain adjustment method (AUTO)
Gain adjustment method indicator
TUNE AUTO
GAIN AUTO
SEA AUTO
RAIN AUTO