Eagle Electronics FISHMARK 640C - Manual (Page 85)

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level in manual mode the unit will continue to use that exact sensitivity
setting until you change it or revert to auto mode.
To adjust sensitivity in auto mode:
1. Press MENU | ENT .
2. The Sensitivity Control Bar appears. Press
↓ to decrease sensitivity.
Press
↑ to increase sensitivity. When it's set at the desired level, press
EXIT . When you reach the maximum or minimum limit, a tone sounds.
Sonar Menu (left) with Sensitivity command selected. The Sensitivity
control bar is shown at right.
To adjust sensitivity in manual mode:
1. Turn off Auto Sensitivity. From the Sonar Page, press MENU |
↓ to
A UTO S ENSITIVITY
| ENT .
2. Press
↑ to
S
ENSITIVITY
| ENT and the Sensitivity control bar appears.
Press
↓ or ↑ to pick a different sensitivity setting. When it's set at the
desired level, press EXIT .
To turn Auto Sensitivity back on:
From the Sonar Page, press
MENU |
↓ to
A UTO S ENSITIVITY
| ENT | EXIT .