Humminbird 343c User Manual download pdf (Page 18)

Bottom Lock

(Sonar Zoom View only)

Bottom Lock changes the mode of the Zoomed view in the Sonar Zoom View. Bottom

Lock continuously graphs the bottom at a constant point on the display regardless of

changes in depth. This "flattens" out the bottom contour, but is effective at showing

fish on or near the bottom.

To turn on Bottom Lock:

1. In the Sonar Zoom View, highlight Bottom Lock on the Sonar X-Press™ Menu.

2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom Lock

setting to on. (Off, On, Default = Off)

Bottom Range

(Sonar Zoom View only, when Bottom Lock is On)

Bottom Range allows you to control how much of the water column, measured up

from the bottom, is shown in the Sonar Zoom View. Choose a small value to see low-

lying bottom structure or details of the bottom return. Choose a larger value to see

large structure in deeper water. It is possible to set the Bottom Range to be greater

than the depth. In this case, you may see surface clutter in a wavy band that mirrors

changes in the depth.

o adjust the Bot

tom Rang

1. In the Sonar Zoom View, highlight Bottom Lock on the Sonar X-Press™ Menu.

2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom Lock

setting to on. (Off, On, Default = Off).

3. Once you turn on Bottom Lock, the Bottom Range X-Press™ menu choice will

be displayed. (10 - 60 feet, or 3-20 meters [International Models Only],

Default = 15 feet)

Chart Speed

Chart Speed determines the speed at which the

sonar information moves across the display, and consequently the amount of detail

shown. A faster speed shows more information and is preferred by most anglers;

however, the sonar information moves across the display quickly. A slower speed

keeps the information on the display longer, but the bottom and fish details become

compressed and may be difficult to interpret. Regardless of the Chart Speed setting,

the RTS® Window will update at the maximum rate possible for the depth

conditions. Adjust Chart Speed to your personal preference.

To adjust the Chart Speed:

1. Highlight Chart Speed on the Sonar X-Press

Menu.

2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the

Chart Speed setting. (1-9, Ultra, where 1 = Slow, 9 = Fast, Ultra = Fastest,

Default = 5)

Zoom Level

(Sonar Zoom View only)

Zoom Level sets the magnification level for the Sonar Zoom View, and is only

available on the X-Press

Menu when the Sonar Zoom View is active. Use Zoom to

increase the display resolution to separate sonar returns that are very close together.

o adjust the Zoom Level:

1. Highlight Zoom Level on the Sonar X-Press

Menu.

2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Zoom Level

setting for the Sonar Zoom View. (2x, 4x, 6x, 8x, Default = 2x)

NOTE: The Zoom Preview Box tracks the bottom and cannot be moved by the user.

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Humminbird 343c User Manual Page 18

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