JRC JFS-280, Instruction Manual

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5 Adjusting How Images Appear 5-6
5
5.2 Settings for Fish Echoes
The fish image setting is a menu for setting the signal process and adjusting the
transmitter/receiver unit.
Normally, use the standard setting values. The five types of standard settings, A through E,
from the [IMAGE] knob are also included. Before changing the fish image setting menu, we
recommend turning the [IMAGE] knob and finding the setting values that fit your work. After
doing that, use this menu to make fine adjustments (how to set values is described in the
section on using the [MULTI] knob to do settings).
The initial values described in the explanations are the initial values of A that the settings of the
[IMAGE] knob displays. [IMAGE] is different for B through E. Refer to the list of menus for details.
5.2.1 Signal Reception Settings
"RX" is a submenu that is mainly used to suppress the reflection of the sea surface during
inclement weather or when there is clutter in the sea.
5.2.1.1 Clutter Settings
You can use the clutter settings to suppress noise on the entire screen.
Operating Procedure Press the keys "7 → 1 → 1" to go to CLUTTER settings
Press the [MENU] key to display the menus.
Turn the [MULTI] knob to move to "7. FISH IMAGE".
Press the [MULTI] knob to open the submenu.
Turn the [MULTI] knob to move to "1. RECIEVE".
Press the [MULTI] knob to open the submenu.
Turn the [MULTI] knob to select "1. CLUTTER".
Press the [MULTI] knob to select.
Turn the [MULTI] knob to adjust the image
appropriately.
The setting range for "CLUTTER" is 0 to 10.
Although this normally differs according to the
conditions of the sea, use a range between 1 and 5.
Increasing this value deletes weak echoes.
Example of adjustment range display for clutter:
Settings can be done in steps of 1.