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