GP1670F_1870F Operator's Manual - Furuno USA

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7. FISH FINDER OPERATIONS7.8 How to Reduce InterferenceInterference from other fish finders and electrical equipment appears on the screen asshown in the illustration. When these types of interference appear on the screen, usethe interference rejector to reduce the interference. Three levels are available. Turnoff the interference rejector when there is no interference, so that you do not eraseweak echoes.Interference fromother fish finderInterference fromelectrical equipmenton your boatTo reduce interference, open the full RotoKey menu then select [Sensitivity] and [Interference]to show the [Interference] window. Select the level of interference reductionto use. [High] provides the greatest degree of interference reduction.7.9 How to Erase Weak EchoesSediment in the water and reflections from planktonappear on the display in low-intensity colors.To erase weak echoes, open the full RotoKey menuthen select [Sensitivity] and [Color Erase] to showthe [Color Erase] window. Select a low percentageto erase weak echoes. Increase the percentage toerase strong echoes.Weakechoes7-12
7. FISH FINDER OPERATIONS7.10 How to Measure Depth, Time Between LocationsYou can measure the depth to an object with the VRM. Also, you can measure the timefrom the right edge to a location. For example, you can measure how many minutesago the echo appeared.To measure the depth, press the up and down arrow pads on the CursorPad to putthe VRM on the object to measure the depth. To measure time, press the right and leftarrow pads on the CursorPad.The VRM cannot be operated when the Gain adjustment window is active.00’07”14.210Time elapsedVRM depth20307.11 How to Balance Echo StrengthA school of fish at a depth deeper than a school of equal strength in shallow waterappearsin weaker colors. This condition is caused by the attenuation of the ultrasonicwave. To display the schools of fish in the same colors, use the TVG. The TVG automaticallyadjusts the gain with depth so that echoes of the same strength and differentdepths are shown in the same colors.Unwanted echoesfrom surface0 ftUnwanted echoesare erased.0 ft300 ft 300 ftEchoes of the same sizeare displayed in differentsizes and colorsdepending on depth.Echoes of the same sizeare displayed in samesizes and colors.Do the following to balance echo strength:1. Open the [FISH FINDER] menu then select [FISH FINDER SETUP].2. Select [50 kHz TVG] or [200 kHz TVG].3. Enter TVG value. Lower the TVG setting to decrease the gain for near distance.7-13
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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-
Page 37 and 38: 1. OPERATIONAL OVERVIEW4) Press the
Page 39 and 40: 1. OPERATIONAL OVERVIEWItem Context
Page 41 and 42: 1. OPERATIONAL OVERVIEW1.17 Tide In
Page 43 and 44: 2. TRACKYour boat’s track is plot
Page 45 and 46: 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: 7. FISH FINDER OPERATIONSClutter7.7
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 and 98: 7. FISH FINDER OPERATIONSItem[50 kH
Page 99 and 100: 7. FISH FINDER OPERATIONSBottom con
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
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13.3.2 Transom mount transducer13.
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13. INSTALLATION3. Wipe off any san
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13. INSTALLATIONHow to install the
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13. INSTALLATIONHow to attach the s
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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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