MODEL FR-8051/8111/8251
MARINE RADAR
G3 MAY. 07
00080735211 00080735211
OME34240G30 OME34240G30
Pub. No. OME-34240
DANGER
SAFETY INFORMATION
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
TABLE OF CONTENTS
Chapter 1 OPERATION
Chapter 5 LOCATION OF PARTS
Chapter 3 MAINTENANCE
Chapter 4 TROUBLESHOOTING
Chapter 2 RADAR OBSERVATION
FOREWORD
Features
A Word to FR-8051/8111/8251 Owners
115/230 VAC
CONFIGURATION OF FR-8051/8111/8251
Antenna Unit
SPECIFICATIONS
Transceiver Module
Others
Power Supply and Power Consumption
Display Unit
Environmental Conditions
Type
EQUIPMENT LISTS
Standard Set
Name
Name
Optional Equipment
Spare Parts
xiii
CATEGORIZATION BY SPECIFICATION
Control Description
Chapter OPERATION
Figure 1-1 Control description
0.25 NM
Display Indications
Figure 1-2 Display indications
NORMAL + NAV + PLOT
Figure 1-3 Display indications lower part
Normal + PLOT
Normal + NAV Select NAV on DISP DATA menu
1.2 Transmitting, Stand-by
Procedure
1.1 Turning the Radar On/Off
1.3 Selecting Range
Presentation mode
Loss of gyro signal
1.4 Presentation Mode
Selecting presentation mode
representative display
c Own ship is automatically reset to 50% of radius
Description
Presentation mode
Figure 1-6 TRAIL menu
1.5 Menu Overview
Basic menu operation
Figure 1-5 MAIN menu
selection of plotting symbol
Menu tree
ERASE erase all plotting symbols
Preset pulselength for 0.75~1.5, 3, 6, 12~24NM
MAN SPD 00.0kt
INITIAL
TUNE SET AUTO, MANU
SPD MODE MAN, LOG, NAV
1.8 Adjusting Picture Brilliance
Video lockup recovery
1.6 Tuning the Receiver
1.7 Adjusting Sensitivity
Figure 1-8 BRILL menu
1.9 Adjusting Brilliance of Control Panel and Markers
1.10 Adjusting Range Ring Brilliance
1.11 Suppressing Sea Clutter
Figure 1-10 Effect of A/C RAIN control
1.12 Suppressing Rain Clutter
1.13 The Heading and North Markers
1.14 Measuring the Range
Measuring range by VRM
Figure 1-12 How to measure range by VRM
Figure 1-13 How to measure bearing by EBL
1.15 Measuring Bearing
1.17 Measuring Range and
Figure 1-14 How to assess risk of collision
Canceling the cursor offset
1.16 Collision Assessment by
1.19 Off-centering the Picture
Adjusting index lines intervals
Canceling off-centered picture
1.18 Index Lines
1.21 Inscribing Marks on the Display
Canceling zoom
Presetting the FUNCTION key
1.20 Zoom
Figure 1-19 FUNC menu
Procedure
1.23 Own Ship Speed
Table 1-1 Eight available target objectives
Manual speed input
1.24 Ship’s Graphic
1.25 Interference Rejector
1.26 Echo Trails
Trail reference
Canceling echo trail
Starting echo trail
Trail time
Figure 1-23 Plotting
1.27 Electronic Plotting E-plot
Trail brilliance
Plotting a target
Target data
Canceling target plotting
Canceling individual target plotting
Canceling all target plotting
Selecting guard zone type
1.28 Setting a Guard Alarm Zone
Figure 1-24 In and out alarms
Setting a guard zone
Canceling the guard zone and guard alarm
1.29 Watch Alarm
Figure 1-25 How to set the guard alarm
Silencing the aural alarm
Figure 1-26 Echo average
1.31 Suppressing Second-Trace Echoes
1.34 Selecting Pulselength
Presetting pulselength
1.32 Echo Stretch
1.33 Noise Rejection
Selecting pulselength set to use
Table 1-2 Default pulselength settings
1.35 Waypoint Display
1.36 Outputting Cursor Position TLL data
1.38 Sector Blanking
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
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2.1 Radar Picture, Target Properties and Radar Pulse
2.2 Range Resolution
Figure 2-2 Range resolution
Chapter RADAR OBSERVATION
Indirect echoes
2.3 Bearing Resolution
Figure 2-3 Bearing resolution
2.4 False Echoes
Figure 2-6 Side-lobe echoes
2.5 Minimum and Maximum Ranges
Side-lobe echoes
Minimum range
SART background
How to show SART marks on the display
2 SART range errors
2.6 Locating a Ship or Survival Craft in Distress by SART
6 Gain
5 Detuning the radar
3 Radar bandwidth
4 Radar side lobes
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When Working on the Antenna Unit
Chapter MAINTENANCE
Danger!-Electrical Shock Hazard
Check point
3.1 Periodic Maintenance Schedule
3.2 Life Expectancy of Major Parts
Interval
Danger!-Electrical Shock Hazard
Chapter TROUBLESHOOTING
4.1 Simple Troubleshooting
When Working on the Antenna Unit
Serviceman qualification
4.2 Advanced-level Troubleshooting
Remedy
DANGER! - High Voltage
Problem
Check point and probable
cause
Problem
Check point and probable
Remedy
Figure 4-2 Diagnostic test, test pattern
4.3 Diagnostic Test
Figure 4-1 Diagnostic test screen
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DANGER
Chapter LOCATION OF PARTS
5.1 Antenna Unit
Figure 5-1 Antenna unit all models, cover opened
N photo No
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
MODULATOR Board MD-9162 Magnetron FR-8051 MAF1422B FR-8111 MAF1425B
Figure 5-4 RF transceiver unit FR-8051/8111
Circulator RU-3686
IF Amplifier Limiter S-LX20 MIC RU-8014S or RU-9254
N photo No
5.3 Display Unit common to all models
Figure 5-6 Display unit, top view
Figure 5-7 Display unit, top view
High voltage is present at the
Figure 5-8 Display unit, right side view
Figure 5-9 Display unit, left side view
potentiometers for adjustment
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A.1 Performance Monitor
Appendix A DESCRIPTION OF OPTIONAL EQUIPMENT
Operating a performance monitor
A.3 Video Plotter RP-15
A.2 Auto Plotter ARP-15
A.4 Fluxgate Heading Sensor C-2000
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