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Sensitivity - Humminbird 757c Operation Manual

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531528-1_A - 757c_787c2_&_787c2i_Man_Eng.qxp
the display and will adjust the sensitivity of all sonar frequencies. Increasing
the sensitivity shows more sonar returns from small baitfish and suspended
debris in the water; however, the display may become too cluttered. When
operating in very clear water or greater depths, increased sensitivity shows
weaker returns that may be of interest. Decreasing the sensitivity eliminates
the clutter from the display that is sometimes present in murky or muddy water.
If Sensitivity is adjusted too low, the display may not show many sonar returns
that could be fish.
NOTE: The Sensitivity setting is a global setting and will adjust the sensitivity of all sonar
frequencies, as compared to specific sensitivity adjustments (such as 83 kHz Sensitivity,
455 kHz Balance or Wideside Sensitivity) which allow you to adjust the level of sensitivity for
one specific beam at a time.
Sensitivity at Low
To adjust the Sensitivity:
1. Highlight Sensitivity on the Sonar X-Press™ Menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or
decrease the Sensitivity setting. (Low = 1, High = 20, Default = 10)

Sensitivity

Sensitivity controls how much detail is shown on
Sensitivity at Medium
63
10/16/2006
10:43 AM
Sensitivity at High
Page 72

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