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Marine RADAR
Furuno
841 MARK-2 manual
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Contents
Main
PUB. No. OME -34440
FIRST EDITION : JAN. 1997 G : JUL. 10, 2001
i i i i i i i i i i i i i
SAFETY INSTRUCTIONS
WARNING
CAUTION
ii
Safety Instructions for the Operator
CAUTION
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
iii
Safety Instructions for the Installer
CAUTION
TABLE OF CONTENTS
v
2. OPERATION
Declaration of Conformity
3. INTERPRETING THE DISPLAY
FOREWORD
Features
SPECIFICATIONS
Antenna Unit
Transceiver Module (contained in radome)
Display Unit
Interface NMEA
ix
EQUIPMENT LIST
x
CONFIGURATION
xi
1. PRINCIPLE OF OPERATION
1.1 What is Radar?
1.2 How Ships Determined Position Before Radar
1.3 How Radar Determines Range
1.4 How Radar Determines Bearing
2
Figure 1-1 How radar works
3
2. OPERATION
Figure 2-1 Control panel
2.1 Control Description
4
}
308.7
0.646
220.9
0.675
2.4 Transmitting
2.5 Selecting the Range
2.6 Adjusting LCD Backlighting and Display Tone
2.7 Adjusting Control Panel Brilliance
2.8 Adjusting GAIN, STC, A/C RAIN and FTC
[ [
12
2.9 Tuning the Receiver
1.5
2.11 Measuring the Bearing
2.10 Measuring the Range
2.12 Menu Operation
. . . . . . . . . . . . . . . . .
10
Table 1-1 Menu description
* Default settings shown in boldface.
Menu Function
2.13 Selecting the Display Mode
2.14 The Window Display
2.15 Selecting the Presentation Mode
2.16 Guard Alarm
CAUTION
2.17 Suppressing Radar Interference
2.18 Suppressing Noise Interference
2.19 Selecting Pulselength
2.20 Off Centering the Display
2.21 Echo Trails
2.22 The Navigation Data Display
. . . . . . . . . . . . . . . . .
2.23 Echo Stretch (magnifying long range echoes)
2.24 Selecting Unit of Measurement for Range
2.25 Selecting Bearing Reference
2.26 Watchman
2.27 Erasing the Heading Marker
2.28 Deselecting Ranges
CAUTION
Page
3. INTERPRETING THE DISPLAY
3.2 Target Properties and Radar Wave Reflection
3.1 The Radar Wave and Radar Horizon
3.3 Range Resolution
3.4 Bearing Resolution
3.5 False Echoes
Page
3.6 Nautical Chart and Radar Picture
4.1 Safety Information
!
4. MAINTENANCE & TROUBLESHOOTING
4.2 Preventative Maintenance
4.3 Replacing the Fuse
4.4 Troubleshooting
4.5 Self Test
m9.0m7.0
Figure 5-1 Typical antenna unit location
Figure 5-2 Antenna unit
Unpacking the antenna unit
5. INSTALLATION
5.1 Antenna Unit Installation
Mounting platform
Wiring and final preparation
5.2 Display Unit Installation
Page
Connections
Connect the signal and power cables, the ground wire and optional equipment as shown in Figure 5-12.
CAUTION
Figure 5-12 Display unit, rear view
Signal cable connection 1. Connect the signal cable to DJ-1 on the rear panel of the display unit.
3. Put the boot-band as shown below, and tighten it.
The OPTION connector
MODEL 841 MARK-2
Procedure
5.3 Installation Check List
CAUTION
5.4 Initial Adjustment of Picture
GAIN
Figure 5-17 Installation setup 2 menu
Follow the procedure below to obtain proper radar picture.
[ [
12
Figure 5-14 Display for adjustment of gain, STC, A/C RAIN and FTC
5.5 Displaying the Installation Menus
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
5.8 Sweep Timing
5.9 Closing the Installation Menus
Press the [MENU] key and turn off the power.
Table 5-1 Voltage ratings (reference for installer)