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