Name: Furuno 1621
Brand: Furuno
Rating: 4 (1 reviews)

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Table of Contents3
Display Unit View6
General Safety Information7
Operating Precautions8
Features8
Specifications9
Environment Conditions11
Power Supply11
Compass Safe Distance11
Equipment List12
Principle of Operation13
Operational Overview15
The Control Panel16
Turning the Radar on and off18
Transmitting19
Stand-By20
Selecting a Range21
Adjusting Receiver Sensitivity21
Adjusting the STC - Reducing Sea Clutter22
How to Adjust the STC23
Adjusting Display Brilliance24
Adjusting Display Tone24
Erasing the Heading Mark24
The Menu25
Measuring Range and Bearing27
Tips for Measuring Bearing29
Target on Collision Course with Your Vessel29
Reducing Interference30
Rain Clutter30
Radar Interference31
Enlarging an Area of Interest - Zoom32
Shifting the Display33
Guard Alarm34
Setting the Guard Zone34
Selection of Guard Zone Type - Guard in or Guard out35
Silencing the Audible Alarm36
Canceling the Guard Zone36
Notes on the Guard Alarm36
Simulating Target Movement - Echo Trail37
Starting Echo Trailing37
Selecting Echo Trailing Time37
Adjusting Brilliance of Afterglow37
Displaying Navigation Data38
To Turn Navigation Data on and off38
Magnifying Long Range Echoes - Echo Stretch39
Watchman40
Summary of Display Indications41
Application43
The Radar Wave and Radar Horizon44
How the Radar Wave Travels44
Target Properties and Radar Wave Reflection45
Range Resolution46
Bearing Resolution47
False Echoes48
Multiple Echoes48
Side-Lobe Echoes49
Blind and Shadow Sectors49
Indirect Echoes50
Position Fixing with Radar51
To Fix Your Position by Using Radar Range51
By Range and Bearing to a Point on Land52
To Fix Your Position by Using Two Radar Bearings53
Nautical Chart and Radar Picture54
Maintenance55
Electrical Shock Hazard55
RF Radiation Hazard55
Routine Maintenance Program56
Replacing the Fuse57
Location of Parts58
Scanner Unit View - Radome Opened58
Display Unit, Rear View58
Troubleshooting59
DU Board (Display Unit) View62
LCD Panel View62
PNL Board View63
Scanner Unit, Inside Views63
Installation65
Scanner Unit Installation - Mounting Considerations66
Fixing Holes67
Vent Tube67
Mounting Dimensions of Scanner Platform68
How to Fasten Radome Base to Platform68
How to Connect the Signal Cable to the Scanner Unit69
Proper Position of Radome Gasket69
Display Unit Installation70
Display Unit Outline Drawing71
Connections72
Navigator Connection72
Connection Terminal on External Equipment73
Adjustments75
Relative Bearing Alignment75
Heading Marker and Adjustable Sector Markers76
Sweep Timing77
Unit of Range Measurement for VRM and Cursor78
Magnetron Heater Voltage79
Selecting Mode of Operation - Function80
List of Outline Drawing and Circuit Diagrams81
Display Unit Diagram83
Radar Scanner Unit Diagram84
Interconnection Diagram85
Power Supply of du Board Diagram87
Panel Diagram88
Scanner Unit Diagram89
Power Supply of SD Board Diagram90

Brand	Furuno
Model	1621
Category	Marine Radar
Language	English

Furuno 1621 User Manual

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Furuno 1621 Specifications

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