Furuno 841 MARK-2 manual

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)