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JMA-7100 Instruction Manual > 3.BASIC OPERATION > 3.9  USE FUNCTION KEY [USER]
3.9 USE FUNCTION KEY [USER]
"Radar Function Setting" is provided for easily obtaining the best radar video by 
storing complex radar signal processing settings in the optimum status by use, and 
calling the setting in accordance with the conditions for using the function.
Functions are factory-set for general use, and the settings can be fine adjusted by 
operating the menu.
Four function modes are available, and they are factory-set as follows:
3.9.1 Operation Procedures
3.9.1.1 Calling a Function
Procedures
1) Press the [USER] key.
Each time the [USER] key is pressed, the selection changes cyclically as follows:
Function Off → Function1 → Function2→Function3 → Function4→Function Off
The name of the current function 
mode is displayed at the lower left 
of the display.
Alternatively, left-clicking the 
function button located at the 
lower left of the radar display will 
enable the same operation.
3.9.1.2 Changing Function Setting (temporary change)
When radar signal processing setting is changed by using the menu or button on the radar 
display while function 1 to 4 is called, the change is temporarily reflected to the operating 
state.
Since this method does not change the memory contents, the new setting is discarded as soon 
as another function is called.
When the previous function is called again, operation is performed according to the memory 
contents.
Function 1: Useful for observing short-range videos.
Function 2: Suitable for general ocean navigation.
Function 3: Useful for observing videos in stormy weather.
Function 4: Use this mode when sea clutter is not strong but
rain / snow clutter is strong.
Coast
Deep Sea
Storm
Rain
Function 
(FUNC) mode