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Thiết bị đo sâu Koden CVS-841

10.4" Dual Frequency
Color TFT LCD Sounder

Professional specificationsAdvanced features such as dual frequencies, 1kW or 3kW output, unique signal processing make this sounder the best choice for the professional fisherman, wherever his fishing ground is shallow, mid or deep ocean. Programmable output and frequencyThe frequency and output power level can be selected in the field. No need to change the transmitter and receiver module any more as often required in conventional units. Note: The transducer must be matched with transmitters frequency and power output level. High sensitivityA higher rate of transmission and a unique interference rejection system greatly enhance echo detection ability. Plus, a newly developed log receiver provides low noise echoes due to its wide dynamic range. These features help the operator to detect fish in a more simple and a quicker way. Entire image controlAnother unique feature is the ability to vary the gain of the entire image previously captured. Using this feature, the operator can go back and analyze ground that has already been covered in greater detail including density of fish school, activity and even type of fish. Bright and clear pictureA steady, flicker-free image is shown on a wide-angle, flat 10.4 inch Liquid Crystal Display. The clarity is retained even when the brightness is reduced for nighttime operation. Navigation displayBoat position, event, etc. can be displayed in Lat/Lon or LOP by connecting a navigator unit. Water temperature can also be displayed with an optional water temperature sensor being connected. Mixed echo displayFinding schools of fish often requires expertise backed by long-term experience. In this sounder KODENs unique processing method allows the operator to find those weak "hard to find" echoes quickly by combining high and low frequencies echoes at the same time. Event markingCombined with the provisioned event key and current ships position information, this unit enables the skipper to mark an ongoing event on the screen. The event location (latitude/longitude) can be output to an external plotter unit to be used in the planning of future fishing expeditions. Operation "easy" designTaking into account the marine environment and the operational aspects of sounders, we designed all keypads and analog controls to be logically arranged for quick and effective operation. Compact and waterproof designsThe sounder can be installed anywhere on the boat, on the table, tilted console space or even on the fly bridge, thanks to a strengthened waterproof design.





CVS-841C (1kW), CVS-841P (3kW)

Output Power

Defined by the suffix.  C: 1kW, P: 3kW, T: 5kW


10.4 inch TFT Color LCD (640 x 480 dot)

Display Colors

16 colors (Color pallet can be changed)/Background: 9 colors


Dual frequency, combination selected from 28, 50, 200 kHz

Sounding Range

(meter/hiro/fathom/Italian fathom, selected from the following range scale or auto RANGE) 2.5 to 10 (2.5 step), 10 to 100 (5 step), 100 to 400 (10 step), 400 to 1000 (50 step), 1000 to 1200 (100 step), 1200 to 3000 (100 step) (3kW only)

(feet) 10 to 20 (5 step), 20 to 80 (10 step), 80 to 400 (20 step), 400 to 1600 (40 step), 1600 to 4000 (200 step), 4000 to 7200 (200 step), 7200 to 8000 (400 step) (3kW only)

Bottom Range/Zoom Range

2.5, 5, 7.5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 180, 200 meter, hiro, fathom, or Italian fathom, one range selected

10,15, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 320, 360, 400, 450, 500, 550, 600, 650/ feet

Image Shift

Auto/Manual, deepest displayed depth is 3000 (1kW)/3000 (3kW) meter, hiro, fathom, Italian fathom (1 step increment) 8000 (1kW)/8000 (3kW)/feet (5 step increment)

Presentation Mode

Image modes available, including combined displays are Normal (including SHIFT), High frequency, Low frequency, Zoom (Bottom Lock, Bottom Discrimination, Zoom), Bottom Zoom, Combined, Enhanced, A-Scope.

Image Split

Horizontally split: 1:1 (See NOTE), Vertical split: 1:1, Vertical split to 3 divisions: 1:1:1, Vertical split to 4 divisions: 1:1:1:1
Note: Zoomed horizontal split division ratio is approx 2:1.

Audible Alarm

Fish alarm and depth alarm

Image Speed

Fixed 12 speed (4/1, 3/1, 2/1, 1/1, 1/2, 1/3, 1/4, 1/6, 1/8, 1/12, 1/16, 1/32) and stop

Interference Rejection

3 steps (Off, 1, 2)

Color Rejection

15 steps (one our of 15 colors)

Depth Marker

VRM (Variable Range Marker), scale, zoom range marker, guard zone marker, division marker, time marker, color pattern


Brightness, gain, enhance, STC, depth range, image mode

Auto Functions

Depth range, shift

Navigational Data

Own ships position (Lat/Lon every 0.001 min, Loran C LOP), water temperature (°C/ °F/Graph display), ships speed (km/h, mph, kt), Own ships bearing

Input Data Format

NMEA-0183 Ver 2.0/1.5 (GGA, GLL, GTD, MTW, VTG)

Output Data Format

NMEA-0183 Ver 2.0 (DBS, DBT, DPT, MTW, TLL)

Power Supply Voltage

10.8 to 31.2 VDC

Power Consumption

35 W or less at 24 VDC

Operating Temperature

-15ºC to +55ºC

Waterproof Grade


Case Dimensions/Weight

12.6"W x 12.6"H x 5.44"D, 15 lbs.



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