JRC JFS-280 Instruction Manual page 107

Scanning sonar
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Fish finder images vary depending on the number of fish finders that are connected.
To display the fish finder, settings other than just "On" and "Off" are required.
The setting items that must be adjusted after displaying the fish finder are "TRIGGER", "RANGE
SETTING", "GAIN", "F/F CLUTTER", "SHIFT", FISH FINDER ADC", "FISH FINDER STC", "FISH
FINDER INTERFERENCE", and "STC CURVE".
Use these settings to adjust the image so it is similar to the fish finder that is connected.
Note) Fish finder images that are displayed by a small sonar are not guaranteed to be the same as the
images of the fish finder that is connected.
Operating Procedure
The initial settings of the display are "SPLIT POSITION = Left/right", "DIRECTION = Horizontal", and
"SCROLL STEP = 1/2"
The position and size of the split display are shared by [AUDIO].
Adjust the settings for "TRIGGER", "RANGE SETTING", "GAIN", "F/F CLUTTER", "SHIFT", FISH
FINDER ADC", "FISH FINDER STC", "FISH FINDER INTERFERENCE", and "STC CURVE".
Press the [MODE] key to open the FISH FINDER screen.
Press the keys "8
Press the [MENU] key. The menu opens.
Turn the [MULTI] knob to move to "8. OPERATION" and
press the [MULTI] knob to open the submenu.
Turn the [MULTI] knob to move to "2. DISPLAY MODE"
and press the [MULTI] knob to open the submenu. Turn
the [MULTI] knob to move to "3. SPLIT DISPLAY" and
press the [MULTI] knob to open the submenu.
Turn the [MULTI] knob to move to "2. F/F" and press the
[MULTI] knob to display the pulldown menu.
The initial setting is "OFF".
Turn the [MULTI] knob to move to "2. ON" and press the
[MULTI] knob to select.
"2. F/F " has been set to ON.
Press the [MENU] key to close "MENU".
4-17
2
3
2" to go to FISH FINDER settings
4
4 Operations

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