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