Furuno 851 MARK-2 - Manual (Page 4)

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TABLE OF CONTENTS
FOREWORD.......................................... iv
SYSTEM CONFIGURATION .................. v
1. PRINCIPLE OF OPERATION
1.1 What is Radar?........................... 1-1
1.2 How Ships Determined Position
Before Radar.............................. 1-1
1.3 How Radar Determines Range... 1-1
1.4 How Radar Determines
Bearing....................................... 1-1
1.5 Radar Wave Speed and Antenna
Rotation Speed .......................... 1-2
1.6 The Radar Display...................... 1-2
2. OPERATION
2.1 Control Description..................... 2-1
2.2 Display Indications and
Markers ...................................... 2-2
2.3 Turning the Radar On and Off .... 2-2
2.4 Transmitting................................ 2-3
2.5 Selecting the Range ................... 2-3
2.6 Adjusting LCD Backlighting and
Display Tone............................... 2-3
2.7 Adjusting Control Panel
Illumination................................. 2-4
2.8 Adjusting GAIN, STC, A.C RAIN
and FTC ..................................... 2-4
2.9 Tuning the Receiver ................... 2-6
2.10 Measuring the Range ............... 2-6
2.11 Measuring the Bearing ............. 2-7
2.12 Menu Operation........................ 2-8
2.13 Selecting the Display Mode .... 2-10
2.14 The Window Display............... 2-11
2.15 Selecting the Presentation
Mode ........................................ 2-12
2.16 Guard Alarm ........................... 2-12
2.17 Suppressing Radar
Interference.............................. 2-14
2.18 Suppressing Noise
Interference ............................. 2-15
2.19 Selecting Pulselength............. 2-15
2.20 Off Centering the Display ....... 2-15
2.21 Echo Trails ............................. 2-16
2.22 Navigation Data Display......... 2-17
2.23 Echo Stretch (magnifying
long range echoes) .................. 2-18
2.24 Selecting Unit of
Measurement for Range .......... 2-19
2.25 Selecting Bearing Reference.. 2-19
2.26 Watchman.............................. 2-19
2.27 Erasing the Heading Marker... 2-20
2.28 Deselecting Ranges ............... 2-20
2.29 Displaying Navigation Data
During Stand-by....................... 2-20
2.30 Outputting Cursor Position to
Navigator ................................. 2-21
2.31 Displaying Cursor Position,
Range and Bearing to Cursor .. 2-21
2.32 Visual Alarm Indications......... 2-21
3. INTERPRETING THE DISPLAY
3.1 The Radar Wave and Radar
Horizon ...................................... 3-1
3.2 Target Properties and Radar
Wave Reflection......................... 3-2
3.3 Range Resolution ...................... 3-2
3.4 Bearing Resolution..................... 3-2
3.5 False Echoes ............................. 3-3
3.6 SART ......................................... 3-5
3.7 Racon (Radar Beacon) .............. 3-7
4. MAINTENANCE &
TROUBLESHOOTING
4.1 Preventative Maintenance.......... 4-1
4.2 Replacing the Fuse .................... 4-2
4.3 Troubleshooting ......................... 4-2
4.4 Test ............................................ 4-3
4.5 Replacing the magnetron ........... 4-3