Garmin STRIKER PLUS 4 Owner's Manual

Also see for STRIKER PLUS 4: Installation instructions Owner's manual

Contents

À Left side of the vesselÁ Right side of the vesselÂ The transducer on your vesselÃ TreesÄ Old tiresÅ LogsÆ Distance from the side of the vesselÇ Water between the vessel and the bottomSplit-Screen FrequencyYou can view two frequencies from the split frequency screen.FlasherThe flasher shows sonar information on a circular depth scale,indicating what is beneath your boat. It is organized as a ringthat starts at the top and progresses clockwise. Depth isindicated by the scale inside the ring. Sonar information flasheson the ring when it is received at the depth indicated. The colorsindicate different strengths of the sonar return.Select Flasher.À Depth at your present locationÁ Depth scaleSplit-Zoom ViewOn the split-zoom page, you can see a full-view graph of sonarreadings on the right side of the screen, and a magnified portionof that graph on the left side of the screen.From a sonar screen, select > Zoom > Split Zoom.À Zoomed depth scaleÁ Zoom windowÂ Depth rangeSelecting the Transducer TypeIf you are connecting a transducer that was not included with thedevice, you may need to set the transducer type to make thesonar function properly. Before connecting the transducer, youshould select the transducer type. The transducer name shouldbe listed on the label on the transducer cable, near theconnector.1 Select Settings > My Vessel > Transducer Type.2 Select an option:• If you have a 200/77 kHz, dual-beam transducer, selectDual 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 thelist.Sonar FrequenciesNOTE: The frequencies available depend on the chartplotter,sounder modules, and transducer being used.Adjusting the frequency helps adapt the sonar for your particulargoals and the present depth of the water.Higher frequencies use narrow beam widths, and are better forhigh-speed operation and rough sea conditions. Bottomdefinition and thermocline definition can be better when using ahigher frequency.Lower frequencies use wider beam widths, which can let thefisherman see more targets, but could also generate moresurface noise and reduce bottom signal continuity during roughsea conditions. Wider beam widths generate larger arches forfish target returns, making them ideal for locating fish. Widerbeam widths also perform better in deep water, because thelower frequency has better deep water penetration.CHIRP frequencies allow you to sweep each pulse through arange of frequencies, resulting in better target separation indeep water. CHIRP can be used to distinctly identify targets, likeindividual fish in a school, and for deep water applications.CHIRP generally performs better than single frequencyapplications. Because some fish targets may show up betterusing a fixed frequency, you should consider your goals andwater conditions when using CHIRP frequencies.Some sonar black boxes and transducers also provide the abilityto customize preset frequencies for each transducer element,which enables you to change the frequency quickly using thepresets as the water and your goals change.4 Sonar Fishfinder