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select 10 feet. The 20 to 30 foot portion of the water column is now displayed 

on the Zoom display, and the entire water column is viewable on the flasher 

window. 

The Marcum Digital Sonar also features “Chart Zoom” which enables you use a 

scrolling graph in Zoom mode.  Activate the Chart Zoom in the Display 

Options of the menu. You set the zoom just as you would when using the 

other sonar options. When you press the ZOOM button to make a change, the 

Vertical Zoom window will automatically open.  After adjustments have been 

made, you may turn the Vertical Zoom window off again in the Display 

Options of the menu. 

CONE ANGLE INFO

 

A feature unique to the Digital Sonar is the “Sonar Footprint” that displays the 

actual area being covered by your transducer while you are fishing. This data 

is displayed below the cone angle icon, and represents the diameter of the 

base of the transducer cone. This will keep you constantly updated how much 

area is being covered by your Digital Sonar, and will help you decide which 

transducer angle best suits the conditions. When the Digital Sonar is first 

turned on, it will be transmitting utilizing the 20-degree setting. To switch from 

20 degree to 8 degree, simply press the CONE ANGLE button once, and the 

CONE ANGLE icon will change from 20 degree to 8 degree, and the Sonar 

Footprint will change with it. 

Conditions where the narrow beam will benefit you are: 
1 — Fishing in deep water (over 40’) 
2 — Fishing along very steep drop-offs for bottom-hugging walleyes  
3 — Fishing in big schools of fish, like suspended crappies 
4 — Fishing in and around heavy weeds or standing timber  
5 — When fishing in a crowd, the narrow beam will reduce

interference  

INTERPRETING SIGNALS

 

DIGITAL  DEPTH 

—  The  digital  depth  display  on  the  Marcum  Digital Sonar 

provides a quick and easy way to determine depth. Digital Depth is always 

displayed in the center of the circular display, and on the bottom of the vertical 

displays.  It  will  also  show  in  the  upper  left  corner  of  the  graph  in  some 

configurations. This display can be used as a quick reference when checking 

depths through the ice. 

READING BOTTOM 

— When interpreting your bottom signal, always read the 

leading edge (shallowest side) of the signal return. If you have a strong signal 

return (wide band) and it starts at 13 feet and ends at 16 feet, the correct 

depth is 13 feet or the shallowest leading edge of the return signal. Anything 

beyond the shallowest leading edge indicates the strength of the return signal. 

The  Marcum Digital Sonar can also be used to determine bottom composition. 

The thicker and bolder your bottom shows, the harder the bottom is.  In some 

cases, hard bottom can be indicated by a “double” or second echo that will show 

on your display at approximately twice the water depth.  Soft bottom (silt, mud, 

muck) will only register one bottom reading.  

Summary of Contents for LX-6s

Page 1: ...LX 6s LX 7 Digital Sonar Marcum LX 6s Marcum LX 7 User Manual ...

Page 2: ...me to a stop as we usher in a new era in ice fishing electronics The Marcum Digital Sonar These units are the most advanced ice fishing sonars ever designed and now that you own one you re about to see why With a customizable dashboard display superior target separation 12 level interference rejection dual beam transducer adjustable zoom and much more the Marcum Digital Sonar is the perfect combin...

Page 3: ...as a transducer arm The adjustable transducer arm allows for maximum flexibility in positioning the Digital Sonar around the ice hole and can even be moved to the other side of the shuttle Using the Marcum Digital Sonar can be as simple as turning it on the factory settings will come on automatically and allow you to use the Digital Sonar in the most popular configuration Be sure to explore all of...

Page 4: ... the charger If the light is red the battery is being charged When your battery is fully charged this red light should change to green If it is time to go fishing and the light has not turned green go fish and try to allow a longer charging period next time Batteries are an expendable item and must be replaced periodically The batteries that we use are the Sealed Lead Acid variety they are 12 volt...

Page 5: ...ucer inside and close the protective soft pack FISHING IN SHALLOW WATER The Marcum Digital Sonar is designed to be an effective fishing tool in a wide variety of environments Most of the time simply turning on the unit at factory default settings is all that is necessary Shallow water 10 feet or less can be problematic without making a few adjustments If you are having trouble getting optimal perf...

Page 6: ... and a bar will appear at the bottom of your display Pressing the UP DOWN will adjust your sensitivity and the sensitivity setting will now be digitally displayed on the SENS gauge The best SENS setting is achieved by turning up your sensitivity until you receive a clear and steady bottom reading To see your lure or bait turn up the SENS some more until you just begin to display your bait without ...

Page 7: ... the portion of the water column you would like to zoom in on The actual size of the Zoom window can be adjusted in the Main Menu The Zoom feature allows you to focus the display on a specific depth within the water column and can be a great benefit in a variety of fishing situations Seetheseparate ZOOMsectionbelowformoreinfoontheZOOM Whenever you are utilizing the ZOOMmenu keep in mind that it ti...

Page 8: ... the Sonar Footprint will change with it TARGET ADJUST This feature allows the angler to change the size of the signals being displayed without increasing the sensitivity The TARGET ADJUST feature will give you the smallest signal size at 0 and the signals displayed will get thicker as you increasetheTARGETADJUST This featureshouldbeusedin conjunctionwith theSENStofine tuneyour display Thosewhohav...

Page 9: ...ter performance if you select open water mode MAX PING RATE Adjusting this setting will increase the response time of signals from your transducer to the screen If fishing shallow water less than 20 feet use the lower settings Likewise you will see better performance with the higher settings in deeper water TRANSDUCER OFFSET This will allow you to have true a depth measurement no matter how far be...

Page 10: ...ackgrounds you choose which one you prefer here The Night option is great for low light periods or when in a darkened shack SYSTEMS SETTINGS is the third sub menu and it has the following features that may be adjusted LANGUAGE Choose between English or French UNITS Choose between feet or meters SIMULATOR The Digital Sonar has a simulator mode that will portray a variety of different depths and sig...

Page 11: ...he water This simulator represents an open water experience so the depths and signals will change as it goes through the simulation When using your Digital Sonar in open water in a moving boat it is typical to mark fish as a hook or arch shape When stationary as in ice fishing your signals of both your jig and the fish will show as lines of varying thicknesses You may also experiment with settings...

Page 12: ...e factory default screen open Flasher in center Vertical Display on left Vertical Zoom on right The area that is featured on the Zoom Display is indicated by the Zoom Indicator Bar a light blue bar on the right side of the Vertical Display When you press the ZOOM button a Zoom Depth window will appear at the bottom of the screen This is where you set the uppermost limit of the Zoom Display by pres...

Page 13: ...degree and the Sonar Footprint will change with it Conditions where the narrow beam will benefit you are 1 Fishing in deep water over 40 2 Fishing along very steep drop offs for bottom hugging walleyes 3 Fishing in big schools of fish like suspended crappies 4 Fishing in and around heavy weeds or standing timber 5 When fishing in a crowd the narrow beam will reduce interference INTERPRETING SIGNAL...

Page 14: ...tom A big school of fish concentrated in one portion of the water column can show on your sonar as one large blob and it can be difficult to pick out individual targets Zooming in on the zone with the most fish will give you better definition and switching to the 8 degree cone will eliminate signalsfrom fish on the peripheryofyourarea improving your definitionevenmore READINGLURESANDJIGS The Marcu...

Page 15: ...when you are on the ice but making this change will back off the gain curve allowing better performance in certain ice fishing conditions Finally you should also consider changing the color palette from the default six color palette to one of the three color palettes HOW TO DECIDE WHICH CONFIGURATION TO USE With 5 different sonar windows along with a plethora of other settings it can be hard to de...

Page 16: ...raph The interpretation of these signals improves with experience and use in the field BATTERY CHARGER TROUBLESHOOTING A majority of inquiries that come to our office are battery or battery charger related Battery failure can be caused by a fault in the charging system and many times the issue is with the fuse on the wiring harness If you suspect your battery is not being charged follow these trou...

Page 17: ...PLICATION The Marcum Digital Sonar is just at home on a boat as it is in your ice shack The Universal Transducer sold separately is designed to be mounted right to your boat s transom or to the lower unit of a bow mounted trolling motor This design makes it easy for you to use your Digital Sonar for high speed scouting work or for breaking down structure one piece at a time You will be able to ide...

Page 18: ... form included in the box with your unit If you enclose this form in the box with your unit there is no need to contact our office just include the filled out form in the shipping box Some people are more comfortable calling for shipping instructions During peak ice season we sometimes receive a high volume of calls making it impossible to get to all customers who phone in For this reason strongly...

Page 19: ...rotect your Digital Sonar from rain and snow with this clear snowshield Open Water Transducer Use your Digital Sonar all year This ducer mounts on the transom or trolling motor of your boat These items can be ordered off our website www marcumtech com The customer is responsible for shipping costs associated with returning the unit to Marcum Technologies Marcum will pay for shipping the repaired u...

Page 20: ...www marcumtech com MARCUM TECHNOLOGIES 3943 QUEBEC AVE NORTH MINNEAPOLIS MN 55427 763 512 3987 International 888 778 1208 MarCum User Manuals are available for download from www marcumtech com ...

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