CLUTTER: Low intensity echoes, often caused by sediments in water, are painted on the screen as a large number or random dots. This noise can be suppressed. The higher the number (setting) the weaker the echoes which are erased.
RES. COLOR: Sets transfer characteristics of input signal level versus display echo level. Echo strength is emphasized in order of CUBE, SQUARE, LINEAR, LOG, and you can observe the characteristics of each by watching the color bar as you change the setting.
LOG: | Displays weak to strong echoes in their respective levels. This is the default setting, |
| and is suitable for general use. |
LINEAR: | Downplays the weak echoes when compared with LOG. Effective for suppressing |
| weak echoes such as plankton. |
SQUARE: Strong echoes are emphasized more than in LINEAR. | |
CUBE: | Strong echoes are emphasized even more than in SQUARE. |
TARGET KEY: Selects target lock function among reverse, position and echo. Default setting is REVERSE. For further details see paragraph 2.12 on page
LOCK MODE: Selects how to track fish echo in ”echo” target lock; automatically or manually. Default setting is AUTO. For further details see paragraph 2.12 on page
AUTO TILT: Turns automatic tilt on or off, and the default setting is OFF. The choices are ± 2° ,
±4° , ± 6° , and ± 10° . Automatic tilt adjusts the tilt angle in the following sequence:
B →
B:Current tilt angle
A:Auto tilt setting
For example, the tilt angle is 30° and the automatic tilt setting is 4° . Then, the tilt angle is changed in the following sequence: 30° → 26° → 30° → 34° → 30°→ 26° → 30° → 34° …
Note: The [TILT] control is inoperative when automatic tilt is active.