MARINE RADAR
MODEL FR-8051/8111/8251
00080735211 00080735211
OME34240G30 OME34240G30
Pub. No. OME-34240
G3 MAY. 07
SAFETY INFORMATION
DANGER
Do not diassemble or modify the equipment
DANGER
DANGER
Radio Frequency Radation Hazard
Use the correct fuse
COMPLIANCE WITH R&TTE DIRECTIVE 1999/5/EC
Chapter 1 OPERATION
TABLE OF CONTENTS
Chapter 3 MAINTENANCE
Chapter 4 TROUBLESHOOTING
Chapter 2 RADAR OBSERVATION
Chapter 5 LOCATION OF PARTS
A Word to FR-8051/8111/8251 Owners
Features
FOREWORD
CONFIGURATION OF FR-8051/8111/8251
115/230 VAC
Transceiver Module
SPECIFICATIONS
Antenna Unit
Power Supply and Power Consumption
Display Unit
Environmental Conditions
Others
EQUIPMENT LISTS
Standard Set
Name
Type
Optional Equipment
Spare Parts
xiii
Name
CATEGORIZATION BY SPECIFICATION
Figure 1-1 Control description
Chapter OPERATION
Control Description
Figure 1-2 Display indications
Display Indications
0.25 NM
Figure 1-3 Display indications lower part
Normal + PLOT
Normal + NAV Select NAV on DISP DATA menu
NORMAL + NAV + PLOT
Procedure
1.1 Turning the Radar On/Off
1.3 Selecting Range
1.2 Transmitting, Stand-by
Loss of gyro signal
1.4 Presentation Mode
Selecting presentation mode
Presentation mode
c Own ship is automatically reset to 50% of radius
Description
Presentation mode
representative display
1.5 Menu Overview
Basic menu operation
Figure 1-5 MAIN menu
Figure 1-6 TRAIL menu
Menu tree
ERASE erase all plotting symbols
Preset pulselength for 0.75~1.5, 3, 6, 12~24NM
selection of plotting symbol
INITIAL
TUNE SET AUTO, MANU
SPD MODE MAN, LOG, NAV
MAN SPD 00.0kt
Video lockup recovery
1.6 Tuning the Receiver
1.7 Adjusting Sensitivity
1.8 Adjusting Picture Brilliance
1.9 Adjusting Brilliance of Control Panel and Markers
1.10 Adjusting Range Ring Brilliance
1.11 Suppressing Sea Clutter
Figure 1-8 BRILL menu
1.12 Suppressing Rain Clutter
1.13 The Heading and North Markers
1.14 Measuring the Range
Figure 1-10 Effect of A/C RAIN control
Figure 1-12 How to measure range by VRM
Figure 1-13 How to measure bearing by EBL
1.15 Measuring Bearing
Measuring range by VRM
Figure 1-14 How to assess risk of collision
Canceling the cursor offset
1.16 Collision Assessment by
1.17 Measuring Range and
Adjusting index lines intervals
Canceling off-centered picture
1.18 Index Lines
1.19 Off-centering the Picture
Canceling zoom
Presetting the FUNCTION key
1.20 Zoom
1.21 Inscribing Marks on the Display
Procedure
1.23 Own Ship Speed
Table 1-1 Eight available target objectives
Figure 1-19 FUNC menu
1.24 Ship’s Graphic
1.25 Interference Rejector
1.26 Echo Trails
Manual speed input
Canceling echo trail
Starting echo trail
Trail time
Trail reference
1.27 Electronic Plotting E-plot
Trail brilliance
Plotting a target
Figure 1-23 Plotting
Canceling target plotting
Canceling individual target plotting
Canceling all target plotting
Target data
1.28 Setting a Guard Alarm Zone
Figure 1-24 In and out alarms
Setting a guard zone
Selecting guard zone type
1.29 Watch Alarm
Figure 1-25 How to set the guard alarm
Silencing the aural alarm
Canceling the guard zone and guard alarm
1.31 Suppressing Second-Trace Echoes
Figure 1-26 Echo average
Presetting pulselength
1.32 Echo Stretch
1.33 Noise Rejection
1.34 Selecting Pulselength
Table 1-2 Default pulselength settings
1.35 Waypoint Display
1.36 Outputting Cursor Position TLL data
Selecting pulselength set to use
1.39 Alarm Output Signal On/Off
Figure 1-29 Blank areas where transmission is suspended
1.37 Selecting Unit of Range Measurement, Bearing Reference
1.38 Sector Blanking
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2.2 Range Resolution
Figure 2-2 Range resolution
Chapter RADAR OBSERVATION
2.1 Radar Picture, Target Properties and Radar Pulse
2.3 Bearing Resolution
Figure 2-3 Bearing resolution
2.4 False Echoes
Indirect echoes
2.5 Minimum and Maximum Ranges
Side-lobe echoes
Minimum range
Figure 2-6 Side-lobe echoes
How to show SART marks on the display
2 SART range errors
2.6 Locating a Ship or Survival Craft in Distress by SART
SART background
5 Detuning the radar
3 Radar bandwidth
4 Radar side lobes
6 Gain
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Danger!-Electrical Shock Hazard
Chapter MAINTENANCE
When Working on the Antenna Unit
3.1 Periodic Maintenance Schedule
3.2 Life Expectancy of Major Parts
Interval
Check point
Chapter TROUBLESHOOTING
4.1 Simple Troubleshooting
When Working on the Antenna Unit
Danger!-Electrical Shock Hazard
4.2 Advanced-level Troubleshooting
Serviceman qualification
DANGER! - High Voltage
Problem
Check point and probable
Remedy
Problem
Check point and probable
Remedy
cause
Figure 4-1 Diagnostic test screen
4.3 Diagnostic Test
Figure 4-2 Diagnostic test, test pattern
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Chapter LOCATION OF PARTS
5.1 Antenna Unit
Figure 5-1 Antenna unit all models, cover opened
DANGER
5.2 RF Transceiver Unit
Figure 5-2 RF transceiver unit FR-8251
Figure 5-3 RF transceiver unit FR-8251, bottom view, cover removed
N photo No
Figure 5-4 RF transceiver unit FR-8051/8111
Circulator RU-3686
IF Amplifier Limiter S-LX20 MIC RU-8014S or RU-9254
MODULATOR Board MD-9162 Magnetron FR-8051 MAF1422B FR-8111 MAF1425B
5.3 Display Unit common to all models
Figure 5-6 Display unit, top view
Figure 5-7 Display unit, top view
N photo No
Figure 5-8 Display unit, right side view
Figure 5-9 Display unit, left side view
potentiometers for adjustment
High voltage is present at the
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Operating a performance monitor
Appendix A DESCRIPTION OF OPTIONAL EQUIPMENT
A.1 Performance Monitor
A.4 Fluxgate Heading Sensor C-2000
A.2 Auto Plotter ARP-15
A.3 Video Plotter RP-15
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