The LS6100 display unit has a nearly square panel front that measures 7.7 inches high and 7.2 inches wide, depth is 3.3-inches. The unit ships with the display unit, power cable, owner’s manual, beefy tilt-only mounting bracket, protective front cover, and hardware to flush mount the display.
All essential electronics are internal to the display. The only remaining component needed get full use out of this bottom machine is a transducer.
Several transducer options are available ranging from plastic transom-mount units with water temperature sensing to a bronze thru-hull with both water temperature and speed sensors.
For our on the water testing we mounted the display using the accompanying bracket and found that it held the display unit securely.
Ports on the case back connect to a power and transducer cable using twist-lock connectors. A single ground wire connection is on the back too. This fishfinder can interface with a Furuno GPS sensor as well as some other NMEA0183 capable devices.
Screen Size and Viewability
The Furuno LS6100 has a monochrome LCD screen measuring 4.7-inches high and 3.5-inches wide. On the diagonal the portrait layout screen is 6-inches across. Screen resolution is 320 pixels vertically and 240 pixels on the horizontal plane.
We viewed the screen in open sunlight and found it to be fairly bright and adequately sharp with good contrast when viewed from straight-on. I gave it a good rating for daytime viewability. When viewed at night I rated the screen excellent.
Obviously, because it is a monochrome screen it only has two color selections to choose from, white background is for daylight viewing while a black background is used for night viewing. Screen backlighting on the Furuno illuminates the entire screen evenly. It has ten levels of back light adjustment.
Controls and Operation
Pushbutton controls are on the right side of the front panel. The LS6100 has three menus, main, system, and installation. Each is reached with a press of the Menu/Esc key, then a selection is made with the cursor pad arrows, and finally the selection is accepted and executed with a press of the Enter key.
Gain control allows the user to switch between two automatic gain settings, fishing or cruising, and manual gain using front panel pushbuttons. The user can set the gain offset to adjust the automatic settings or switch to manual gain.
Functions and Features
Some notable features on the Furuno LS6100 are A-scope, bottom lock, shift, variable zoom, adjustable picture advance speed, and whiteline. Bottom lock, shift, and zoom effectively increase the screen resolution by showing only a portion of the water column on the screen.
Furuno LS6100 Specifications
Power (Watts RMS) :300
Frequency (kHz) : 50 / 200
Transducer Used for Test : Airmar P66
Auto Depth Ranging : Yes
Manual Depth Ranging : Yes – 8 steps
Gain Auto(2) / : Manual
Bottom Lock : Yes
A-Scope : Yes
Shift : Yes
Waterproof : IPX5
Warranty Period (Years) : (2)Parts / (1)Labor