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Marine RADAR
Furuno
841 MARK-2 manual
Models:
841 MARK-2
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Troubleshooting
Specs
Install
Maintenance
Configuration
General procedure
Error Visual alarm
Guard Alarm
Adjusting A/C Rain
Entering Initial Settings
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Contents
Marine Radar
B . N o . O M E 3 4 4 4
Safety Instructions
Do not operate the equipment with wet hands
Do not open the equipment
Stay away from transmitting antenna
Do not disassemble or modify the equipment
Use the correct fuse
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Table of Contents
Foreword
Features
Display Unit
Specifications
Antenna Unit
Transceiver Module contained in radome
Interface Nmea
Complete Set
Installation Materials CP03-15xx
Accessories FP03-05900
Equipment List
Optional Equipment
Model 841 MARK-2
Configuration
Principle of Operation
How radar works
Control Description
Operation
675NM 220.9R 0.646NM 308.7R
Display Indications and Markers
Turning the Radar On and Off
5NM
Selecting the Range
Adjusting LCD Backlighting and Display Tone
Adjusting Control Panel Brilliance
Transmitting
General procedure
Adjusting GAIN, STC, A/C Rain and FTC
STC MAN Auto
How to tune manually
Tuning the Receiver
Adjusting A/C Rain
Adjusting FTC
Measuring the Bearing
Measuring the Range
Press the Menu key to open the menu. The main menu appears
Menu Operation
See the table on the next
Menu Function
Menu description
11 Display modes
Selecting the Display Mode
CU course-up
Selecting the Presentation Mode
Window Display
Course-up, you may select CU or WPT- UP, on the menu
WPT-UP waypoint-up
Guard Alarm
Setting the guard zone
Silencing the audible alarm
Suppressing Radar Interference
Canceling the guard zone
Off Centering the Display
Suppressing Noise Interference
Selecting Pulselength
Navigation Data Display
Echo Trails
Turning echo stretch on or off
Setting up the nav data display
Echo Stretch magnifying long range echoes
Press the Menu key Select Nav Data and press the ENT key
Turning on watchman
Selecting Unit of Measurement for Range
Selecting Bearing Reference
Watchman
Displaying Navigation Data During Stand-by
Canceling watchman
Erasing the Heading Marker
Deselecting Ranges
Displaying Cursor Position, Range and Bearing to Cursor
Visual Alarm Indications
Error Visual alarm
Outputting Cursor Position to Navigator
Super-refraction
Interpreting the Display
Radar Wave and Radar Horizon
Target Properties and Radar Wave Reflection
Multiple echoes
Bearing Resolution
Range Resolution
False Echoes
Indirect echoes
Side-lobe echoes
Nautical Chart and Radar Picture
Safety Information
Maintenance & Troubleshooting
Replacing the Fuse
Preventative Maintenance
Period Check point Remarks
But Then
Troubleshooting
Self Test
Self Test
Siting, handling considerations
Antenna Unit Installation
Mounting
Parallel with the fore and aft line
Holes for antenna unit
Mounting considerations
Display Unit Installation
Display unit is designed to be mounted on a tabletop
Mounting procedure
Connections
Signal cable connection
Heading Sensor Connection
To connect external equipment to the OP- Tion connector
For E/S
Navigation aid, video sounder connection
Radar
Installation Check List
Displaying the Installation Menus
Initial Adjustment of Picture
Follow the procedure below to obtain proper radar picture
Relative Bearing Alignment
Entering Initial Settings
Sweep Timing
Press the Menu key and turn off the power
Closing the Installation Menus
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