JRC JMA-3300 Series Installation Manual page 77

Chapter 4 ADJUST MENU SETTINGS
4.3 RADAR ECHO
 Adjusting Main Bang Suppression Level and Main Bang Suppression Area
Press the cursor key or turn the [MULTI] control to set the Main Bang Suppression
Area value to "20".
Press the cursor key or turn the [MULTI] control to set the Main Bang Suppression
Level to allow main bang video to remain slightly on the display.
The Main Bang Suppression level can be set between 0 and 255.
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Set the Main Bang Suppression Area value to overlap the suppression range with the
main bang.
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