Furuno FR1500 Mk3 User Manual Page 50
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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-1.38-
1.42 Degaussing Interval
The screen is degaussed automatically at certain time intervals, as well as each time the radar is
turned on, to eliminate color contamination caused by earth’s magnetism or magnetized ship
structure. You can select the degaussing interval and the degaussing degree as follows:
1. Press the [MENU] key followed by the [0] key four times to select OTHERS.
4. Press the [3] key to display the DEGAUSS menu.
5. Press the [2] key to select desired degaussing interval (OFF, 30 seconds, 1, 2 minutes) in
the DEGS INTVL field.
6. Press the [3] key to select desired degaussing degree (45°, 90°, 135°) in the DEGS DEG
field. For example, selecting 45° will automatically degauss the screen when the ship
makes a turn which is between 45° and 89°.
5. Press the [ENTER/SELECT] key followed by
the [MENU] key.
DEGAUSS
1.
↑
2. DEGS INTVL OFF 30 sec 1 2 min
3. DEGS DEG OFF 45° 90° 135°
1.43 Background Color
The [BKGND COLOR] key selects the color of the background, characters, menu, markers and
indications as below. Each press of the key selects one of five color combinations.
Setting Marks
1 2 3 4 5
Radar display area BLK (black) L-BLU (light
blue)
L-BLU (light
blue)
L-BLU (light
blue)
BLK (black)
Outside radar display
area
BLK (black) BLK (black) BLK (black) L-BLK BLK (black)
Characters GRN (green) GRN (green) GRN (green) WHT (white) RED
Menu YEL (yellow) YEL (yellow) YEL (yellow) YEL (yellow) YEL (yellow)
Menu highlight YEL YEL YEL YEL RED
EBL/VRM BLU (blue) GRN (green) GRN (green) GRN (green) L-BLU (blue)
Range rings GRN (green) WHT (white) WHT (white) WHT (white) GRN (green)
Cursor WHT (white) GRN (green) GRN (green) GRN (green) WHT (white)
Heading line GRN (green) WHT (white) WHT (white) WHT (white) GRN (green)
Target alarm zone WHT (white) L-BLU (blue) L-BLU (blue) L-BLU (blue) WHT (white)
North mark GRN (white) WHT (blue) WHT (blue) WHT (blue) GRN (white)
Stern marker GRN (white) WHT (blue) WHT (blue) WHT (blue) GRN (white)
1.44 Clutter Sweep
The clutter sweep feature suppresses sea and rain clutters within the trackball-selected area, to
discriminate specific targets from noise. The user may select the area to process and the level of
suppression to apply as follows:
1. Press the [MENU] key.
2. Press the [5] key twice to select the ECHO SIG menu.
- SHIPBORNE RADAR AND ARPA 1
- *00080840400**00080840400* 2
- *OME34500T00**OME34500T00* 2
- SAFETY INSTRUCTIONS 3
- TABLE OF CONTENTS 5
- INTRODUCTION 7
- •1 menu are not accessible 9
- ANTENNA RADIATORS 10
- RF TRANSCEIVER 10
- DISPLAY UNIT 10
- INTERFACE 10
- POWER SUPPLY 10
- 1 OPERATIONAL OVERVIEW 13
- Video Freeze-up Recovery 13
- 1.3 Control Description 14
- 1.4 CRT Brilliance 15
- 1.6 Tuning the Receiver 15
- 1.7 Degaussing the Screen 16
- 1.9.2 Manual speed input 17
- PULSE 1 M1 18
- H U RM 18
- 1.11 Presentation Modes 19
- 1.15 Suppressing Sea Clutter 23
- 1.17 Interference Rejector 24
- 1.18 Measuring the Range 25
- 1.19 Measuring Bearing 26
- 1.22.1 Introduction 29
- 1.23 Off-centering (shift) 30
- 1.24 Echo Averaging 31
- 1.25.1 Plotting a target 33
- 1.25.2 Cancelling 34
- 1.25.3 Vectors 34
- CPA/TCPA 35
- 1.25.8 Past plot points 36
- 1.26.2 Trail gradation 37
- 1.26.4 Thin trails 37
- 1.26.5 Restoring trails 38
- 1.27 Parallel Index Lines 39
- 1.30 Markers 41
- 1.32 [F1] Key 42
- 1.33 [F2] Key 43
- 1.34 FUNCTION Key 44
- -1.34 46
- 1.36.1 Echo stretch 47
- 1.36.2 Contrast 47
- 1.37 Watch Timer 48
- 1.38 Noise Rejector 49
- 1.39 Navigation Data 49
- 1.42 Degaussing Interval 50
- 1.43 Background Color 50
- 1.44 Clutter Sweep 50
- 1.45 Day, Night Brilliance 51
- 1.46 Contrast 51
- 1.47.1 Preparation 52
- 1.48 Alarms 56
- 1.51 Echo Area (R-type only) 59
- 2.1 Introduction 60
- 2.2 Criteria of Tracking 61
- Own ship maneuvers 62
- Other ship maneuvers 62
- 2.5 Acquiring Targets 65
- - TARGET SWAP 66
- 2.5.2 Automatic acquisition 66
- 2.6.1 Individual targets 67
- 2.6.2 All targets 67
- 2.7.1 Vector time 68
- 2.7.2 Vector start time 68
- 2.9 Past Position Display 69
- 2.10 Set and Drift 69
- 2.11 Alarms 70
- 2.11.3 Guard zone alarm 71
- 2.13 Outputting Target Data 72
- 2.14 Diagnostic Sequence 73
- Sea returns 74
- Indirect echoes 75
- 3 RADAR OBSERVATION 76
- Bearing accuracy 77
- Range measurement 77
- 3.2 False Echoes 78
- Screen A: When SART 79
- is distant 79
- Screen B: When SART 79
- is close 79
- 3.4 RACON (Radar Beacon) 81
- 5 MAINTENANCE 83
- 5.3 Replacement of Batteries 84
- 6 TROUBLESHOOTING 85
- Serviceman qualification 86
- Service call 86
- (Continued on next page) 87
- 6.3 Diagnostic Test 90
- 6.4 Menu Hierarchy 92
- [MENU] key + 93
- 7 OPTIONAL EQUIPMENT 95
- 9 nm 9 nm 96
- Description of Sentences 99
- * Not used 102
- *: Not used 103
- T = tracking 106
- Figure A-5 Scanner unit 110
- Figure A-6 RF module 111
- MD Board 112
- 9.2 Circuit diagrams 113
- CHANNEL 2 OUTPUT 114
- 9.3 Parts list 116
- 2 FR-1505/1515/1525 MARK-3 117
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