GP1670F_1870F Operator's Manual - Furuno USA

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7. FISH FINDER OPERATIONS[RANGES]: The default range settings are suitable for most applications. However,you can customize the ranges to suit your needs, with [RANGE 1] - [RANGE 8]. Setthe ranges in descending order. Be sure that each range is higher than its precedingrange.15 ft30 ft60 ft120 ft200 ft400 ft1000 ft1500 ft30 ft30 ft7.18 Interpreting the DisplayZero lineThe zero line (transmission line) showsthe position of the transducer. The linedisappears from the screen when therange is shifted.ZerolineRange shiftedBottom echoesThe strongest echoes are from the bottom, and are normally shown in reddish-brownor red. The colors and the width change with bottom material, depth, sea condition,installation, frequency, pulse length and sensitivity.Difference in depthDifference in sensitivitySecondbottom echo7-22
7. FISH FINDER OPERATIONSBottom contourThe tail from a hard bottom is longer than the tail from a soft bottom, because the hardbottom reflects more of the ultrasonic pulse. An echo from shallow water gives a strongerreflection than the echo received from deep water. A longer bottom tail appearson slopes, because of the difference in travel time at both edges of the beam angle.For the rough bottom, echoes are reflected on many different planes, which displaysechoes in many layers, giving a 3D effect.Soft bottom Hard bottom Rough bottomNature of a bottomThe nature of a bottom is known from the intensityand length of the bottom tail. To find the nature ofa bottom, use a long pulse length and normalgain. For the hard and rough bottom, the bottomecho is reddish-brown with a long tail. For the mudor sand bottom, the bottom echo has less red andwith a short tail. A bottom with a lot of small particlescan give a long tail on the low frequency picture.Fish quantityThe size and density of a school of fish are indicatorsof the quantity of fish.Mud & sandLarge schoolRock baseSmall schoolSize and density of school of fish7-23
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GPS PLOTTER/SOUNDERModelGP-1670F/GP
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IMPORTANT NOTICESGeneral• This ma
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SAFETY INSTRUCTIONSCAUTIONDo no tur
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TABLE OF CONTENTS3.2.3 How to enter
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TABLE OF CONTENTS9. MEMORY CARD OPE
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FOREWORDA Word to GP-1670F, GP-1870
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SYSTEM CONFIGURATIONThe environment
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EQUIPMENT LISTSName Type Code no. R
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1. OPERATIONAL OVERVIEW1.1 Controls
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1. OPERATIONAL OVERVIEWTested SD ca
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1. OPERATIONAL OVERVIEW1.2 RotoKey
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1. OPERATIONAL OVERVIEW2D plotter d
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1. OPERATIONAL OVERVIEW1.6 The Curs
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1.8 Home Screen (Display Selection)
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1. OPERATIONAL OVERVIEW5. Select a
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1. OPERATIONAL OVERVIEWWind meter+n
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1. OPERATIONAL OVERVIEWHow to selec
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1. OPERATIONAL OVERVIEWAuto course-
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1. OPERATIONAL OVERVIEW4) Press the
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1. OPERATIONAL OVERVIEWItem Context
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1. OPERATIONAL OVERVIEW1.17 Tide In
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2. TRACKYour boat’s track is plot
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2.7 How to Delete Track by Color2.
Page 47 and 48: 3. POINTS3.1 What is a Point?In nav
Page 49 and 50: 3. POINTS[Hide]: Hide the icon and
Page 51 and 52: 3. POINTS3.5 How to Select Visibili
Page 53 and 54: 4. ROUTES4.1 What is a Route?Often
Page 55 and 56: 4. ROUTES5) After you have entered
Page 57 and 58: 4. ROUTES4. Select [EASY ROUTING] f
Page 59 and 60: 4. ROUTES4.4 How to Insert a Point
Page 61 and 62: 4. ROUTES4.7.2 Functions available
Page 63 and 64: 4. ROUTES4.9 How to Display a Route
Page 65 and 66: 5. NAVIGATIONThis chapter shows you
Page 67 and 68: 5. NAVIGATION• A red line runs be
Page 69 and 70: 6. MAP SETTINGS, 2D PERSPEC-TIVE/3D
Page 71 and 72: 6. MAP SETTINGS, 2D PERSPECTIVE/3D
Page 77 and 78: 7. FISH FINDER OPERATIONS7.1 How th
Page 79 and 80: 7.3 How to Activate the Fish Finder
Page 81 and 82: 7. FISH FINDER OPERATIONSMarker zoo
Page 83 and 84: 7. FISH FINDER OPERATIONS• The 60
Page 85 and 86: 7.6 Manual Fish Finder Operation7.
Page 87 and 88: 7. FISH FINDER OPERATIONSClutter7.7
Page 89 and 90: 7. FISH FINDER OPERATIONS7.10 How t
Page 91 and 92: 7.14.1 How to set an alarm7. FISH F
Page 93 and 94: 7. FISH FINDER OPERATIONS7.15.2 How
Page 95 and 96: 7.17 FISH FINDER Menu7. FISH FINDER
Page 97: 7. FISH FINDER OPERATIONSItem[50 kH
Page 101 and 102: 7. FISH FINDER OPERATIONSPlanktonA
Page 103 and 104: 8. ALARMSThe plotter section has 11
Page 105 and 106: 8. ALARMS8.4 XTE AlarmThe XTE (cros
Page 107 and 108: 8. ALARMS8.8 Anchor AlarmThe anchor
Page 109 and 110: 9. MEMORY CARD OPERATIONSThis syste
Page 111 and 112: 9.6 How to Delete Files from an SD
Page 113 and 114: 9. MEMORY CARD OPERATIONS9.8.3 How
Page 115 and 116: 10. OTHER FUNCTIONS10.1 AIS Operati
Page 117 and 118: 10.2 DSC Message Information10. OTH
Page 119 and 120: 10. OTHER FUNCTIONS10.4 How to Sele
Page 121 and 122: 10. OTHER FUNCTIONS10.5 Engine Disp
Page 123 and 124: 11. CUSTOMIZING YOUR UNITThe defaul
Page 125 and 126: 11. CUSTOMIZING YOUR UNIT11.3 SYSTE
Page 127 and 128: 11. CUSTOMIZING YOUR UNIT[RESTART G
Page 129 and 130: 12. MAINTENANCE,TROUBLESHOOTINGThis
Page 131 and 132: 12. MAINTENANCE, TROUBLESHOOTINGPro
Page 133 and 134: 12. MAINTENANCE, TROUBLESHOOTING12.
Page 135 and 136: 13. INSTALLATION13.1 Installation o
Page 137 and 138: 13. INSTALLATIONin a position where
Page 139 and 140: 13.3.2 Transom mount transducer13.
Page 141 and 142: 13. INSTALLATION3. Wipe off any san
Page 143 and 144: 13. INSTALLATIONHow to install the
Page 145 and 146: 13. INSTALLATIONHow to attach the s
Page 147 and 148: 13. INSTALLATION8. Launch your boat
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13.5 Wiring13. INSTALLATIONAll wiri
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13. INSTALLATIONHow to extend cable
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13. INSTALLATION13.6 Initial Settin
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13. INSTALLATION13.6.2 CAN bus inpu
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13. INSTALLATIONPGNDescription12748
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APPENDIX 1 MENU TREEESC/MENU(long p
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APPENDIX 1 MENU TREE11(Con’t from
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APPENDIX 1 MENU TREE1(Con’t from
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APPENDIX 2 ABBREVIATIONS, SYMBOLSAb
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APPENDIX 2 ABBREVIATIONS, SYMBOLSSy
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APPENDIX 3 JIS CABLE GUIDECables li
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FURUNOGP-1670F/1870FSPECIFICATIONS
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PACKING LIST GP-1670F-E 14CW-X-9852
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D-1
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D-3
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D-5
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INDEXNumerics2D perspective dispay.
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INDEXrecording interval............
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FURUNO Warranty for North AmericaFU
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GP1670F_1870F Operator's Manual - Furuno USA

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