1. OPERATIONAL OVERVIEW
1-45
1 to 4: Control dynamic range. 1 provides the widest dynamic range; 4 is the nar-
rowest dynamic range.
A: Low level echo brilliance is reduced and noise and clutter are also reduced.
B: Low and high level echoes are displayed evenly.
C: High level echoes' outer edge has gradation to indicate the echo level, with the
higher level echo at the core.
8. Select [0 NEXT] to show the next menu page.
9. Select [2 CONDITION].
10. Select [2 STC CURVE].
11. Select the appropriate setting for the current sea conditions. The available set-
tings are: [2], [2.5], [3], [3.5], [4.2]. A higher setting is recommended for rough
weather.
12. Select [3 STC RANGE].
13. Set the distance for STC effectiveness. A higher setting eliminates farther surface
reflections.
14. If necessary, select [4 LOW LEVEL ECHO] to reject low level echoes. The setting
range is [0] to [8]. The higher the figure, the stronger the low level echo that is
erased.
15. Select [1 BACK] to show the second page of the [CUSTOMIZED ECHO] menu.
16. To save custom settings, select [SAVE] from [3 DEFAULT].
17. Close the menu.
1.28.3 How to restore a user customized echo to the saved settings
If you get lost in operation while changing the settings for a user customized echo, you
can easily restore the settings for that user customized echo saved at section 1.28.2.
1. Open the menu.
2. Select [1 ECHO].
3. Select [2 CUSTOMIZED ECHO].
Note: You can also right-click the [PICTURE] box to access this menu.
4. Select [0 NEXT] to show the next menu page.
5. Select [3 DEFAULT].
6. Select [USER].
7. Close the menu.
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