Garmin STRIKER PLUS 7 Owner's Manual - Page 6

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Left side of the vessel

Right side of the vessel

The transducer on your vessel

Trees

Old tires

Logs

Distance from the side of the vessel

Water between the vessel and the bottom

Split-Screen Frequency

You can view two frequencies from the split frequency screen.

Flasher

The flasher shows sonar information on a circular depth scale,

indicating what is beneath your boat. It is organized as a ring

that starts at the top and progresses clockwise. Depth is

indicated by the scale inside the ring. Sonar information flashes

on the ring when it is received at the depth indicated. The colors

indicate different strengths of the sonar return.

Select Flasher.

Depth at your present location

Depth scale

Split-Zoom View

On the split-zoom page, you can see a full-view graph of sonar

readings on the right side of the screen, and a magnified portion

of that graph on the left side of the screen.

From a sonar screen, select

> Zoom > Split Zoom.

Zoomed depth scale

Zoom window

Depth range

Selecting the Transducer Type

If you are connecting a transducer that was not included with the

device, you may need to set the transducer type to make the

sonar function properly. Before connecting the transducer, you

should select the transducer type. The transducer name should

be listed on the label on the transducer cable, near the

connector.

Select Settings > My Vessel > Transducer Type.

Select an option:

• If you have a 200/77 kHz, dual-beam transducer, select

Dual Beam (200/77 kHz).

• If you have a 200/50 kHz, dual-frequency transducer,

select Dual Frequency (200/50 kHz).

• If you have another type of transducer, select it from the

list.

Sonar Frequencies

NOTE: The frequencies available depend on the chartplotter,

sounder modules, and transducer being used.

Adjusting the frequency helps adapt the sonar for your particular

goals and the present depth of the water.

Higher frequencies use narrow beam widths, and are better for

high-speed operation and rough sea conditions. Bottom

definition and thermocline definition can be better when using a

higher frequency.

Lower frequencies use wider beam widths, which can let the

fisherman see more targets, but could also generate more

surface noise and reduce bottom signal continuity during rough

sea conditions. Wider beam widths generate larger arches for

fish target returns, making them ideal for locating fish. Wider

beam widths also perform better in deep water, because the

lower frequency has better deep water penetration.

CHIRP frequencies allow you to sweep each pulse through a

range of frequencies, resulting in better target separation in

deep water. CHIRP can be used to distinctly identify targets, like

individual fish in a school, and for deep water applications.

CHIRP generally performs better than single frequency

applications. Because some fish targets may show up better

using a fixed frequency, you should consider your goals and

water conditions when using CHIRP frequencies.

Some sonar black boxes and transducers also provide the ability

to customize preset frequencies for each transducer element,

which enables you to change the frequency quickly using the

presets as the water and your goals change.

Sonar Fishfinder