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Datahelm 8120

Navman Datahelm 8120 Installation And Operation Manual

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w w w . n a v m a n . c o m
Datahelm 8120
Installation and Operation Manual
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8120 Installation and Operation Manual2
Contents
1-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1-2 Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1-3 Plug-in cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1-4 Removing and replacing the display unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2-1 Using the keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2-2 Turning on and off / auto power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2-3 Backlight and night mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2-4 Man overboard (MOB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2-5 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2-6 Simulate mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2-7 The main windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3-1 Introduction to navigating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3-2 Chart window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
3-3 Distance and bearing calculator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3-4 Projected course . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
3-5 Tracks and tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
6-1 Waypoints window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6-2 Managing waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7-1 Routes window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7-2 Managing routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8-1 Satellite window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9-1 Using the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
9-2 Interpreting the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9-3 Single and Dual frequency fishfinding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
9-4 Fish detection and display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
9-5 Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9-6 Gain and threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
10-1 Sonar history window - no split . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
10-2 Sonar Zoom window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
10-3 Sonar Bottom window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
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10-4 Sonar 50/200 window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
10-5 Sonar A-Scope window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
13-1 When you add or remove fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
13-2 Fuel window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
13-3 Fuel consumption curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
16-1 The windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
16-2 Using the windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
17-1 Setup > System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
17-2 Setup > Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
17-3 Setup > Sonar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
17-4 Setup > GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
17-5 Setup > Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
17-6 Setup > Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
17-7 Setup > Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
17-8 Setup > Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
17-9 Setup > Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
17-10 Setup > Comms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
17-11 Setup > Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
17-12 Setup > Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
17-13 Setup > Favourites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
17-14 Setup > Simulate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
18-1 Installation: What else comes with my 8120? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
18-2 Installation: Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
18-3 Installation: The display unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
18-4 Installation: Power/data cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
18-5 Installation: GPS antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
18-6 Installation: Sonar transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
18-7 Installation: Navman petrol/gasoline sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
18-8 Installation: Navman diesel sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
18-9 Installation: DSC VHF radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
18-10 Installation: SmartCraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
18-11 Installation: Other NavBus instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
18-12 Installation: Other NMEA instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
18-13 Installation: Setup and test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
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8120 Installation and Operation Manual4
B-1 General problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
B-2 GPS navigation problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
B-3 Fuel consumption problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
B-4 Sonar fishfinding problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Warning
It is your sole responsibility to install and use the instrument and transducer(s) in a manner that will not cause accidents, personal injury or property damage. Always observe safe boating practices.
The choice, location, and installation of transducers and other components of the system are critical to the performance of the system as intended. If in doubt, consult your Navman dealer.
To reduce the risk of misusing or misinterpreting this instrument, you must read and understand all aspects of this Installation and Operation Manual. We also recommend that you practice all operations using the built-in simulator before using this instrument at sea.
Global Positioning System: The Global Positioning System (GPS) is operated by the US Government which is solely responsible for its operation, accuracy and maintenance. The GPS is subject to changes which could affect the accuracy and performance of all GPS equipment anywhere in the world, including this instrument.
Electronic Chart: The electronic chart used by this instrument is an aid to navigation designed to supplement, not replace, official government charts. Only official government charts supplemented by notices to mariners contain the information required for safe and prudent navigation. Always supplement the electronic information provided by this instrument with other plotting sources such as observations, depth soundings, radar and hand compass bearings. Should the information not agree, the discrepancy must be resolved before proceeding any further.
Sonar performance: The accuracy of the sonar depth display can be affected by many factors, including the type and location of the transducer and water conditions. Never use this instrument to gauge depth or other conditions for swimming or diving.
Fuel data: Do not rely on this instrument as the sole source of information about fuel available onboard. You must supplement this instrument’s fuel data with visual or other checks of the fuel available. This is necessary because possible operator errors, such as forgetting to reset the fuel used when filling the tank or running the engine with this instrument not switched on, can render this instrument inaccurate. Fuel economy can change drastically depending on boat loading and sea conditions. Always carry adequate fuel onboard for the intended trip, plus a reserve to allow for unforeseen circumstances.
Simulate mode: Never have simulate mode on when you are navigating on the water.
Failure to adhere to these warnings may lead to death, serious injury or property damage. Navman disclaims all liability for installation or use of this product that causes or contributes to death, injury or property damage or that violates any law.
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8120 Installation and Operation Manual5
1 Introduction
Quick reference to the built-in and optional features:
Feature Type See Requires
General How to use the keys and windows 2
Troubleshooting Appendix B
Simulate mode 2-6
Glossary of special names Appendix C
Specifications Appendix A
MOB Man overboard key 2-4
Navigation Overview of how to navigate 3-1 GPS fix
Finding the boat’s position on the chart 3-2
Navigate to any point or to a waypoint 3-1
Navigate along a route 3-1
Projected course: An estimate of progress 3-4
Tracks: records of where the boat has been 3-5
GPS receiver status 7
Saving and loading data with a user card 15 User card
Chart data Chart features (built in world chart) 3-2
Chart details 3-2-4 & 5 Chart card
Tides at a port 14 Chart card
Alarms Built in alarms 2-5
SmartCraft engine alarms 1-1 SmartCraft
Boat data Data at top of main displays 2-7-3
Compass at top of main displays 2-7-4
Dedicated data display 12
Fuel Fuel computer, Instrument petrol/gasoline engine 13 Fuel sensors
Fuel computer, Instrument diesel engine 13 Diesel sensors
Fuel computer, SmartCraft engines 13 SmartCraft
What to do when you add or remove fuel 13-1
Sounder Overview of the depth sounder 9 Sounder
Depth, bottom features, water features 9 Sounder
Fishfinder 9 Sounder
Other boats Track your buddy, polling other boats 16 DSC VHF
Distress calls 16 DSC VHF
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8120 Installation and Operation Manual6
1-2 Cleaning and maintenance
The Instrument screen is covered by a proprietary anti-reflection coating. To avoid damage, clean the screen only with a damp cloth and mild detergent when dirty or covered in sea salt. Avoid abrasive cleaners, petrol or other solvents. If a plug-in card gets dirty or wet, clean it with a damp cloth or mild detergent.
Cover or remove a transom-mounted transducer when repainting the hull. If painting over a through hull transducer with antifouling paint, use only one coat of paint. Remove the previous coat of antifouling paint by sanding it lightly.
To optimize performance, avoid walking on or jamming cables and connectors. Keep the transducer free of weed, paint and debris. Do not use a high pressure water blast on a speed sensor paddlewheel as it may damage the bearings.
Push the dust cover over the display when the Instrument is turned off.
The NAVMAN 8120 is a rugged, highly integrated marine chartplotter and fishfinder. It is easy to use and has a very large, easy to read and use colour display. Complex functions can be performed with only a few key presses, taking the hard work out of boating.
The available functions depend on the optional sensors and instruments that are installed:
The Video window requires the 8120 to
receive video from a compatible source, such as a camera.
Fuel functions require one or more
petrol/gasoline or diesel fuel sensors to be installed.
SmartCraft engine functions require a
SmartCraft system to be installed. For information on using SmartCraft, see the SmartCraft Gateway Installation and Operation Manual.
1-1 Overview
DSC/Buddy track functions require an
appropriate Navman DSC VHF radio to be installed.
The 8120 can send data to other
instruments, such as an autopilot, and receive data from other instruments.
For information on installation options, see section 18-2.
This manual describes how to install and operate the 8120. Special terms are explained in Appendix C. For more information on this instrument and other Navman products, go to our website, www.navman.com.
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8120 Installation and Operation Manual7
1-3 Plug-in cards
The 8120 can use two kinds of C-MAP™ SD-Card plug-in cards:
Chart cards have chart details required
for navigating in a particular region. When you insert a chart card, the extra details automatically appear on the Chart window. You can plug in up to two chart cards at once. If the chart shows a region not covered by a chart card, then it displays a simplified built-in world chart.
User cards store navigation data. A
user card allows navigation data to be transferred to another compatible instrument (see section 14).
Removing a plug-in card
Turn the 8120 off (see section 2-2). Open the card cover on the right of the display.
Inserting a plug-in card
Push the card down until it releases and can pop up.
Lift the card out. Put the card in its case.
Hold the new card with the gold contacts on the far side.
Push the card into an empty socket until it clicks.
Close the card cover. Turn the 8120 on (see section 2-2).
CAUTION
!
!
CAUTION
DANGER
WARNING
Handle plug-in cards carefully. Keep them in their protective cases when not plugged into the 8120.
Keep the 8120 card cover closed at all times to prevent moisture from entering the card compartment.
1 2
3
3
2
1
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8120 Installation and Operation Manual8
1-4 Removing and replacing the display unit
If the 8120 is bracket mounted then it can easily be removed for security.
Removing the display unit:
1 Turn the 8120 off (see section 2-2) and put
the dust cover on.
2 Loosen the knobs on the mounting
bracket and lift the unit off the bracket.
3 Unplug the connectors from the 8120; turn
each locking collar anticlockwise until you can pull the plug out.
4 Store the 8120 in a dry clean place.
Replacing the display unit
1 Plug the connectors into the back of the
display unit:
Match the connector’s colour to the
socket colour.
Insert each connector and turn the
locking collar clockwise until it is finger tight.
Nothing will be damaged if a cable is
plugged into the wrong socket by mistake.
2 Hold the 8120 in place on the mounting
bracket. Tilt it for best viewing, then hand tighten the knobs on the mounting bracket. Remove the dust cover.
Mounting bracket
Knob
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8120 Installation and Operation Manual9
2 Basic Operation
Overview of the keys
ESC
– Go back to an earlier menu or window. Any changes
are ignored. In chart mode centers chart at boat’s position.
DISPLAY
– This is a powerful key that allows you to setup the display the way you want. Main displays can be saved as favorite displays for easy access from the key.
MENU
– Show a menu of the options for the current active window.
ENTER
– Start an action or accept a change.
/
– This key changes the range on a window eg. Chart or
Sonar zooms
,
,
,
– Cursor keys, to move the cursor or the selection
highlight.
– The key selects which window you are working
with. The Active window is indicated with a red border.
– The key allows you to quickly switch between
your saved favorite displays.
GOTO
AUTO
– For a navigation display: Start navigating to a point, waypoint or along a route (see section 3-4). For sonar display: Select a sonar operating mode (see section 8-1).
SETUP
– The setup key takes you to the setup menu which allows advanced configuration of the 8120.
– This key places a waypoint on the Active Chart
Window.
– Man overboard (MOB, see section 2-3).  – Turn Instrument on and off (see section 2-2); adjust the
backlighting (see section 2-3).
Display – All windows and the data header/Compass
Window – A part of the display in which a particular function is shown eg. The Chart window
on a Chart + Sonar display.
1
2
3
4
5
6
7
8
9
10
11
12
13
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8120 Installation and Operation Manual10
2-1 Using the keys
In this manual:
Press means to push the key for less than
a second.
Hold means to hold the key down.
The internal beeper beeps when a key is pressed (to adjust the beep volume, see section 19-1).
Using the menus
Operate the Instrument by selecting items from menus. Items can be submenus, commands or data.
Selecting a submenu
A after a menu item indicates a submenu, for example Chart . Press
or
to move
the highlight to the submenu, then press
ENTER
.
Starting a command
Press
or
to move the highlight to the command, for example Goto cursor, then press
ENTER
.
Changing data
First press
or
to move the highlight to
the data to change, then:
a) To change a tick box
means On or Yes
means Off or No.
Press
ENTER
or
to change the tick box.
b) To select an option
1 Press
ENTER
to display the list of options.
2 Press
or
to move the highlight to the
option you want, then press
ENTER
.
c) To change a name or number:
1 Press
ENTER
to display the name or number:
2 Press
or
to select a letter or digit to
change. Press
or
to change the letter
or digit.
Repeat this to change other letters or
numbers.
3 Press
ENTER
to accept the new value. Or
press
ESC
to ignore the changes.
d) To change a slider value
Press
to decrease the value or
to increase
the value.
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8120 Installation and Operation Manual11
2-2 Turning on and off / auto power
Turning on manually
If the Instrument is not wired for auto power, press to turn the unit on. If necessary, adjust the display to be easy to read (see section 2-3).
Auto power
If the Instrument is wired for auto power (see section 18-4), then:
• The Instrument automatically turns on when you turn the boat’s ignition switch on.
• You can not turn the Instrument off while the ignition switch is on.
• If Auto power off (see section 17-1) is , the Instrument automatically turns off when you turn the boat’s ignition switch off.
• If Auto power off (see section 17-1) is , the Instrument stays on when you turn the boat’s ignition switch off. You can now turn the Instrument off manually.
2-3 Backlight and night mode
To go to the Backlight window, press briefly.
Backlight
The display and keys are backlit. To change the backlight level, select Backlight, then press to dim or
to brighten.
When you have finished, press
ESC
Tip: Press twice to give the brightest screen, with maximum backlight and Night mode off.
Night mode
Night mode sets the palette for all windows.
Normal palette, for daytime
A palette optimised for night time.
To change mode, hilight Night mode, then press or
ENTER
. To change only the chart
palette, see section 17-2.
Turning off manually
If the Instrument is not wired for auto power or if the ignition switch is off, hold down until the display turns off.
CAUTION
!
!
WARNING
If the Instrument is not wired for auto power then the Instrument does not record engine hours and will not record fuel consumption if not powered (see section 18-4).
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8120 Installation and Operation Manual12
The MOB feature saves the boat’s position and then navigates back to this point.
2-4 Man overboard (MOB)
If the NMEA output (autopilot) is on, the
Instrument asks if the autopilot is active.
Select:
No: Use the Instrument to manually
navigate to the destination MOB waypoint (see sections 3-1-1 and 3-1-2).
Yes: The Instrument asks if the boat is to
go to the MOB waypoint.
Select:
Yes: to immediately start navigating to the
MOB waypoint.
2-6 Simulate mode
In Simulate mode, the Instrument ignores data from the GPS antenna and other transducers and sensors and the Instrument generates this data itself. Otherwise, the Instrument functions normally.
There are two simulate modes:
• Normal: Allows a user to become familiar
with the Instrument off the water.
• Demo: Simulates a boat moving along a
route and automatically displays different Instrument functions.
To start and stop Simulate mode, and for more information, see section 17-14. In simulate mode, Simulate or Demo flashes at the bottom of the window.
2-5 Alarms
When the Instrument detects an alarm condition, it displays a warning message on the display, the internal beeper sounds and any external beepers or lights operate.
Press
ESC
to clear the alarm. The alarm will sound again if the alarm condition occurs again.
The Instrument has user settable alarms (see section 17-8).
CAUTION
!
!
WARNING
MOB will not work if the Instrument does not have a GPS fix.
1 Press
The Instrument stores the boat’s position
as a waypoint called MOB.
2 The Instrument changes to the chart
window, with the MOB waypoint at the centre of the chart.
The chart zooms in for accurate
navigation. If the chart can not show the required small scale, the Instrument changes to plotter mode (a white window with crosshatching and no chart details, see section 17-2).
3 The Instrument sets the MOB waypoint to
be the destination to navigate to.
If the NMEA output (autopilot) is off
(see section 17-10) use the Instrument to manually navigate to the destination MOB waypoint (see sections 3-1-1 and 3-1-2).
CAUTION
!
!
WARNING
This might result in a sudden and dangerous turn.
No: disengage the autopilot; then use
the Instrument to manually navigate to the destination MOB waypoint (see sections 3-1-1 and 3-1-2).
To cancel MOB or set another MOB
1 Press again to display a menu.
2 Select an option from the menu.
Tip: The MOB waypoint remains on the chart after the MOB has been cancelled. To delete the MOB waypoint, see section 5-2-5.
CAUTION
!
!
WARNING
Never have Simulate mode on when using the Instrument to navigate on the water.
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8120 Installation and Operation Manual13
To show one of the main windows full-size, press
DISPLAY
and select the window.
2-7 The main windows
Note
1 The windows available depend on the
optional sensors and instruments that are installed (see section 1-1).
2 Set up commonly used windows as
favourites and press to switch between windows (see section 2-7-2).
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8120 Installation and Operation Manual14
To show one of the other windows full-
screen, press
DISPLAY
, select More... and
select the window.
Press
ESC
to return from one of these windows to the previous window.
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8120 Installation and Operation Manual15
Red border
Press
Press
The 8120 can show up to four windows at once, for example Chart, Sonar, Gauges and Video:
Adding a window to the display
Press
DISPLAY
, select Add window and select
a window to add. The 8120 automatically rearranges the display to show the new window.
Changing window size
1 Press
DISPLAY
and select Split ratio.
2 Press
or
to change the width of the windows. If the 8120 is displaying three or four windows, press
or
to change the height of the windows. Note: Some windows are fixed in size.
3 Press
ENTER
.
Deleting a window from the display
1 Press until the window you want to
delete has a red border.
2 Press
DISPLAY
and select Delete window.
Exchanging two windows on the display
1 Press until the first window has a red
border.
2 Press
DISPLAY
, select Replace and select the
second window.
The 8120 exchanges the two windows.
Replacing a window on the display
1 Press until the window that you want
to replace has a red border.
2 Press
DISPLAY
, select Replace and select a
new window that is not currently visible.
Note
1 When some windows are small then not all
the data is shown.
2 Set up commonly used displays as
favourites and press to switch between displays (see section 2-7-2).
Chart is active Sonar is active
The active window
If there is more than one window displayed, the active window is indicated by a red border. To change the active window to the next window, press .
Pressing
MENU
will display the options menu
for the active window.
2-7-1 Multi window displays
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8120 Installation and Operation Manual16
The 8120 has a list of commonly used displays, called favourite displays. There can be up to six favourite displays.
Each display can have one or more windows plus a data header (see section 2-7-3) and a compass (see section 2-7-4). Set up favourite displays for common situations, for example navigating along a route, travelling in a harbour, fishing.
Selecting a favourite display
To select another favourite, press one or more times. For example, with six favourites:
Adding a favourite display to the list
1 Set up the display with the window or
windows you want in the new favourite (see sections 2-7-1 and 2-7-4).
2 Press
DISPLAY
and select Save this display.
The 8120 displays the favourites list.
3 Select where in the list to add the new
favourite. If you select an existing favourite display then the new favourite will replace the existing favourite in the list.
Deleting a favourite display from the list
1 Press
SETUP
and select Favourites.
2 Highlight the display to delete, press
MENU
and select Delete.
Changing the order of the favourites list
1 Press
SETUP
and select Favourites.
2 Highlight the display to move, press
MENU
and select Move up or Move down.
2-7-2 Favourite displays
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8120 Installation and Operation Manual17
2-7-3 Data header
The displays can show data at the top, called the data header.
Tip: If all fields in a line are None then the line will not be displayed and the data header will take less space on the display.
5 Press
ESC
.
Tip: The data header will change when you select another display. To set a data header that you can recall later, set the header as part of a favourites display (see below).
Favourites displays and data headers
To set a data header for a favourites display, follow the steps to add a favourite (see section 2-7-2 - Adding a favourite display to the list). In step 1, set the data header for the favourite as described above.
2-7-4 Compass
The chart, sonar and highway displays can show a compass at the top of the window.
The compass always shows the boat’s course over ground (COG), a black symbol in the middle. When the boat is navigating to a point, the compass also shows bearing to the destination (BRG), a red symbol.
In this example, BRG is 205°M and COG is 321°M.
To turn the compass off or on:
1 Press
MENU
and select Data header.
2 Set Compass to or .
When you select a window from the
display menu (see section 2-7) the 8120 displays an appropriate data header for the window.
Each favourite display (see section 2-7-2)
has its own data header. When you press
to recall a favourite display, the 8120
recalls the favourite displays data header.
Setting the data header for a display
1 Press
DISPLAY
and select Data header.
2 To turn the data header on or off:
i Select Data.
ii Select or .
3 To select the size of the data:
i Select Size.
ii Select the size to display.
4 To change the data displayed:
i Select Data setup.
ii Change a data field:
a Press the cursor keys to highlight the
field.
b Press
ENTER
to display a menu of
data items.
c Select a data item that is available
on your system or select None to leave the field empty.
iii Repeat the above step to set the other
data fields.
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8120 Installation and Operation Manual18
3 Navigation: Chart
3-1 Introduction to navigating
The chart window shows the chart, the boat’s position course and navigation data.
The Instrument has two ways of navigating, going straight to a point or following a route.
3-1-1 Navigating to a point
When the Instrument is navigating to a point, the chart and highway windows show navigation data:
A The boat position .
B The destination point marked with a circle.
C The boat’s plotted course to the
destination.
D Two CDI lines, parallel to the boat’s plotted
course, which indicate the maximum expected deviation from the plotted course.
For more information, see appendix C.
If the Instrument is connected to an autopilot, the Instrument will send data to the autopilot to steer the boat to the destination. Start the autopilot before starting to navigate to the point.
If the Instrument has no autopilot, steer the boat manually:
a use the boat position and destination on
the chart or highway windows
b or use navigation data displayed on the
data header (see section 2-7-3)
c or use COG and BRG on the compass (see
section 2-7-4).
Note:
1 If the XTE alarm is enabled, an alarm will
sound if the boat deviates too much from its intended course (see section 17-8).
2 If the arrival radius alarm is enabled, then
an alarm will sound to show that the boat has reached the destination (see section 17-8).
3 When the destination is reached an
arrival warning appears with the option to cancel navigation (goto or route). yes the navigation is cancelled, no navigation continues however XTE and highway are no longer displayed.
A
B
C
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8120 Installation and Operation Manual19
3-1-2 Going to a waypoint or to a point on the chart
A waypoint is a position that you can set on the Instrument chart, for example a fishing spot or a point on a route (see section 5).
Going to a waypoint from the chart window
1 Go to the chart window.
2 Move the cursor to the waypoint: either
use the cursor keys or use Find (see section 3-2-5).
3 Press
GOTO AUTO
Going to a waypoint from the waypoints window
1 Go to the waypoints window.
2 Press or
to highlight the waypoint to
go to.
3 Press
MENU
and select Goto.
Going to a point on the chart
1 Switch to a chart window.
2 Move the cursor to the destination point:
either use the cursor keys or use Find (see section 3-2-5).
3 Press
MENU
and select Goto cursor.
To create waypoints before creating the
route, see section 5-2-1.
To create a route, see section 6-2-1.
Starting a route from the chart window:
1 Go to the chart window.
2 Press
MENU
and select Start Route
3 Press
or
to highlight the route to
follow. Press
ENTER
.
4 The Instrument asks for the direction to
traverse the route. Select Forward (the order the route was created) or Reverse.
5 The Instrument displays the chart with the
route marked and starts navigating from the start of the route.
Starting a route from the routes window:
1 Go to the routes window.
2 Then follow step 3 as in starting a route
from the chart window above.
Navigating
The Instrument navigates to each waypoint on the route in turn as described in section 3-1-1.
The Instrument stops navigating to the waypoint at the end of the current leg and starts the next leg of the route:
1 When the boat comes within 0.025 nm of
the waypoint
2 Or when the boat passes the waypoint
3 Or if you skip the waypoint.
Skipping a waypoint
To skip a waypoint, go to a chart window, press
MENU
and select Skip. The Instrument starts navigating straight towards the next waypoint on the route.
CAUTION
!
!
WARNING
Make sure the course does not pass over land or dangerous waters.
Navigating
The Instrument navigates to the point as described in section 3-1-1.
Cancelling navigating
Go to a Chart window, press
MENU
and select
Cancel goto.
Tip: Before starting, create waypoints at points of interest. Create a waypoint at the start of the trip for you to navigate back to (see section 5-2-1).
3-1-3 Following a route
Preparing
A route is a list of waypoints that the boat can follow (see section 6).
Cancelling a route
When the boat has reached the final waypoint, or to stop the boat following the route at any time, cancel the route. Go to a chart window, press
MENU
and select Cancel
route.
CAUTION
!
Skipping a waypoint with the autopilot on might result in a sudden course change.
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8120 Installation and Operation Manual20
A typical chart window shows:
3-2 Chart window
To go to the Chart window:
Press
DISPLAY
and select Chart
A Data header. To turn the data off or on
or to change what data is displayed (see section 2-7-3)
B Compass (see section 2-7-4)
C Chart scale (see section 3-2-3)
D Boat position (see section 3-2-1)
E Boat track (see section 3-5)
F Boat course and CDI lines (see Appendix
C, CDI). The boat is going to the waypoint called FISH6
G Distance and bearing of cursor from boat
H Land
I Sea
J The cursor (see section 3-2-1)
K A typical waypoint (see section 5)
Note:
To change the types of information displayed on the chart, see section 17-2.
To change to a perspective view of the chart, see section 3-2-6.
If the region on the chart is covered by a chart card then the card’s information is automatically displayed on the chart. If the region is not covered by a chart card then the chart displays a simplified built-in world chart which is suitable for planning and general interest.
CAUTION
!
!
WARNING
The built-in world chart does not show enough detail for navigation. When you use the 8120 to navigate, always use a chart card which covers the region.
D
E
J
H
I
K
C
A
F
G
B
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8120 Installation and Operation Manual21
36° 29.841’ N or S Latitude
175° 09.012’ E or W Longitude
3-2-1 Chart modes
The Chart has two modes:
Centre on boat mode
To switch to centre on boat mode in the chart window, press
ESC
. The boat is at the centre of the chart. As the boat moves through the water, the chart automatically scrolls to keep the boat in the centre of the chart. The cursor (see below) is turned off.
Cursor mode
The keys
and
are called cursor keys. To switch to cursor mode in the chart window, hold down a cursor key. The cursor appears and moves away from the boat:
Press the key which points in the direction that the cursor will move, for example press
to move the cursor down.
Press midway between two of the cursor keys to make the cursor move diagonally.
Hold a cursor key down to make the cursor move continuously across the window.
In Cursor mode:
The distance ( DST) and bearing ( BRG) of the cursor from the boat are displayed at the bottom corner of the window.
The chart does not scroll as the boat moves.
If the cursor reaches the edge of the window, the chart will scroll.
For example, hold down to move the
cursor to the right side of the window and the chart will scroll to the left.
3-2-2 Latitude and longitude
Latitude and longitude can be displayed in the data header. The window is degrees and minutes to three decimal places, about 2 m (6 ft) resolution. Normally the position is the boat’s position, and the latitude and longitude has a boat symbol to show this:
36° 29.637’ N or S Latitude
175° 09.165’ E or W Longitude
If the cursor has been moved in the last ten seconds, then the position is the cursor’s position, and the latitude and longitude has a cursor symbol to show this:
CAUTION
!
!
WARNING
When reading the boat position, make sure the position is not the cursor position.
3-2-3 Chart scale
Press
to zoom in and display a smaller area
of the chart in more detail. Press
to zoom
out and display a bigger area in less detail.
The chart scale is displayed at the top left of the chart:
3-2-4 Chart symbols and information
The chart shows many kinds of symbols, such as waypoints, ports, marinas, buoys and beacons. If necessary, press or or to choose a chart scale where the symbol is displayed.
To see stored information about a symbol:
1 Either move the cursor to the symbol on
the chart and wait two seconds
or use Find to move the cursor to a symbol
for a port or service (see section 3-2-5).
2 A window appears at the bottom of the
display with some information about the symbol.
3 To see more detail about a symbol or a list
of associated items for the symbol, press
ENTER
:
i Select an item to display. If there are
more items than will fit on the window, press
or
to scroll up or down.
Select a camera icon to display a photo
of the item. If the photo is too big to fit on the window, press
,
,
or
to
scroll the photo.
Select Tide Station to display a tide
chart for the position (see section 13).
ii Select other items or press
ESC
to
return to the chart.
To see stored information about nearby symbols press
MENU
and select Chart info.
Then follow step 3 above.
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8120 Installation and Operation Manual22
3-2-5 Finding a chart symbol
To find and display a chart symbol:
1 Press
MENU
and select Find.
2 Select the type of symbol: Waypoints,
Routes, Ports by name, Ports & services, or Tide stations.
3 For Ports & services: select the type of
service to find.
For Ports by name: press ,
,
or
to enter a name or letters contained in the port name, then press
ENTER
.
4 A list of items is displayed. If there are
more items than will fit on the window, press
or
to page up and down.
For Ports by name: to search for a different
port name, press
ESC
. change the name,
then press
ENTER
.
5 Select the item and press
ENTER
. The chart window changes to show the item in the middle of the window.
To see stored information about the item,
press
ENTER
(see section 3-2-4).
3-2-6 Perspective view
Perspective view shows the chart from an angle instead of from straight above. To turn perspective view on or off, press
MENU
and set
Perspective to or .
3-3 Distance and bearing calculator
The distance and bearing calculator can plot a course of one or several legs and show the bearing and length of each leg, as well as the total distance along the course. The completed course can be converted into a route.
To use the distance and bearing calculator:
1 Select the Chart window. Press
MENU
and
select Distance.
2 Move the cursor to the start of the first
leg. It does not matter if this point is a waypoint or not. Press
ENTER
.
3 To add a leg to the course, move the
cursor to the end of the leg. It does not matter if this point is a waypoint or not. The window shows the bearing and length of the leg, as well as the total distance along the course. Press
ENTER
.
4 To remove the last leg from the course,
press
MENU
and select Remove.
5 Repeat the above two steps to enter the
whole course.
6 To save the new course as a route,
press
MENU
and select Save. This also saves any new points on the course as new waypoints, with default names. If necessary, edit the route later (see section 6-2-2) and edit any new waypoints later (see section 5-2-3).
7 Finally, press
ESC
to return to the chart
window.
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8120 Installation and Operation Manual23
Tracking records the boat’s position to memory at regular intervals, which can be:
Time intervals.
Or distance intervals.
The track of where the boat has been can be displayed on the chart. The Instrument can display one track while recording another.
To work with tracks, see section 17-6.
The Instrument can store five tracks:
Track 1 can hold up to 2000 points and is intended to record the normal progress of the boat.
Tracks 2, 3, 4 and 5 can hold up to 500 points each and are intended to record sections to be retraced accurately, for example entering a river mouth.
Tip: Record a reference tracks and then use the track to help navigate the same trip later. For example, record a reference track as you leave harbour. Then if you return to harbour and visibility is poor, select the chart and navigate manually along the reference track back into the harbour. Record reference tracks in good conditions.
3-5 Tracks and tracking
When recording is on and the track becomes full then recording continues and the oldest points in the track are deleted. The maximum length of a track depends on the selected track interval: a small interval will give a shorter, more detailed track and a long interval will give a longer, less detailed track, as shown in these examples:
Time intervals
Interval Track 1 Track 2, 3, 4 or 5
1 sec 33 minutes 8 minutes
10 sec 5.5 hours 1.4 hours
1 min 33 hours 8 hours
Distance intervals
Interval Track 1 Track 2, 3, 4 or 5
0.01 20 5
1 2,000 500
10 20,000 5,000
The track lengths are in the current distance units, for example nm.
If Projected course is turned on, then the Instrument will display the projected position based on the course over ground (COG), speed and a specified time. To turn Projected course on and off and to set the time, see section 17-2.
A Projected position
B Boat’s projected course
C Boat position
3-4 Projected course
A
C
B
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8120 Installation and Operation Manual24
4 Video window
The video window shows a picture from a video device, such as a camera. The video window requires a video device to be installed. To select the video window, press
DISPLAY
and select Video.
Adjusting the video picture colour
1 Press
MENU
.
2 Press
or
to highlight a control, then
press
or
to adjust the control.
3 To return the colours to their default
settings, select Restore defaults.
4 Press
ESC
.
Press
to zoom in
Changing the video picture
Press
ESC
to fit the whole picture in the window
Press
or
to move the picture up and down
Press
or
to move the picture sideways
Press
to zoom out
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8120 Installation and Operation Manual25
6 Navigation: Waypoints
A waypoint is a position that you can set on the Instrument chart, for example a fishing spot or a point on a route. The Instrument can have up to 3000 waypoints. A waypoint can be created, changed or deleted.
A waypoint has:
A name (up to eight characters).
An icon showing what kind of waypoint it is. The available icons are:
A position.
A colour for the waypoint symbol and
name on the chart.
A type:
Normal: A normal waypoint can be
navigated to or included in a route.
Danger: A danger waypoint is a point
to avoid. If the boat comes within the danger radius of a danger waypoint the unit can sound an alarm (see section 17-8).
A display option:
Controls how the waypoint is displayed on
the chart (see section 17-2):
5 Navigation: Highway window
The highway window has a bird’s eye view of the boat’s course to a destination:
To go to the Highway window, press
DISPLAY
,
select More, then select Highway.
The highway window shows:
A Optional data header (see section 2-7-3)
B Optional compass (see section 2-7-4)
C Destination waypoint
D Boat’s plotted course to destination
E CDI lines, parallel to the boat’s plotted
course (see Appendix C, CDI). The CDI lines are like a highway over the water where the boat will move
F CDI scale
G The boat position is at the bottom, centre
of the window
CAUTION
!
!
WARNING
The highway window does not show land, dangerous waters or chart symbols.
GF
A B
E
C
D
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8120 Installation and Operation Manual26
6-1 Waypoints window
To go to the waypoints window, press
DISPLAY
,
select More, then select Waypoints.
The waypoints window is a list of the waypoints that have been entered, each with waypoint symbol, name, latitude and longitude, distance and bearing from the boat, type and display option.
If there are more waypoints than will fit on the window, press
or
to scroll up or
down a page at a time.
6-2-1 Creating a new waypoint
Creating and editing a new waypoint from the chart window
1 To create a waypoint at the boat position,
press
ESC
to switch the chart to centre on
boat mode.
Or, to create a waypoint at a different
point, move the cursor to that point on the chart.
2 Press
ENTER
.
3 A new waypoint, with the default name
and data is created.
4 Change the waypoint data if necessary
(see section 5-2-7).
Creating a new waypoint from the waypoints window
1 In the waypoints window, press
MENU
and
select Create.
2 A new waypoint, with a default name and
data, is created at the boat position.
3 Change the waypoint data if necessary
(see section 5-2-7).
Note: Waypoints can also be created when a route is created (see section 6-2-1).
6-2-2 Moving a waypoint
Moving a waypoint from the chart window
1 In the chart window, move the cursor to
the waypoint to move.
2 Press
MENU
and select Move.
3 Move the cursor to the new position and
press
ENTER
.
Moving a waypoint from the waypoints window
To move a waypoint from the waypoints window, edit the waypoint (see section 5-2-3) and change the latitude and longitude.
6-2-3 Editing a waypoint
Editing a waypoint from the chart window
1 In the chart window, move the cursor to
the waypoint to edit.
2 When the waypoint data is displayed,
press
ENTER
.
3 Change the waypoint data
(see section 5-2-7).
Editing a waypoint from the waypoints window
1 In the waypoints window, press or
to
highlight the waypoint to edit. Press
MENU
and select Edit.
2 Change the waypoint data
(see section 5-2-7).
6-2 Managing waypoints
CAUTION
!
!
WARNING
Do not create a navigation waypoint on land or in dangerous water.
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8120 Installation and Operation Manual27
6-2-4 Displaying a waypoint on the chart
This goes to the chart window, and shows the selected waypoint at the centre of the window.
1 In the waypoints window, press or
to
highlight the waypoint to display. Press
MENU
and select Display.
Or, in the Chart window, press
MENU
, select Find, then select Waypoints. Select a waypoint from the list.
2 The Instrument switches to the chart
window, with the selected waypoint at the centre of the chart.
6-2-5 Deleting a waypoint
A waypoint can not be deleted if the boat is navigating to it or if the waypoint is used in more than one route. A waypoint that is used in one route can be deleted.
6-2-6 Deleting all waypoints
1 In the waypoints window and press
MENU
and select Delete all.
2 Select Yes to confirm.
6-2-7 Changing a waypoint’s data
To change the waypoint data when it is displayed in a window:
1 Select the data to change.
Press
ENTER
.
Use the cursor keys to change the data.
Press
ENTER
.
2 If necessary, repeat the above step to
change other data.
3 Select Save.
6-2-8 Sort Waypoints
To change how the waypoints list is displayed:
1 Press
MENU
and select Sort by.
2 Select how to display the list:
Name: In alphabetical order by name.
Icon: Grouped by icon type.
Distance: In order of distance from the
boat.
An arrow at at the top of a column indicates how the waypoints are sorted.
6-2-9 Navigating to a waypoint
See section 3-1-2.
CAUTION
!
!
WARNING
When a waypoint is deleted from a route, check that the changed route does not cross land or dangerous waters.
Deleting a waypoint from the chart window
1 In the chart window, move the cursor to
the waypoint to delete.
2 Press
MENU
and select Delete.
3 Select Yes to confirm.
Deleting a waypoint from the waypoints window
1 In the waypoints window, press
or
to highlight the waypoint to delete. Press
MENU
and select Delete.
2 Select Yes to confirm.
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7-1 Routes window
The routes window is a list of the routes that have been entered, each with route name, start waypoint, end waypoint, number of legs and total distance.
To go to the routes window, press
DISPLAY
,
select Other, then select Routes.
If there are more routes than will fit on the window, press or
to scroll up or down a
page at a time.
7-2-1 Creating a new route
A. Creating a new route from the chart window
While creating the route:
Press or to change the range; scroll
the chart by moving the cursor to the edge of the chart.
A data box at the bottom left of the
window shows the route name and total distance. If the cursor is near a leg, it shows the length and bearing of the leg as well.
The legs of a route must start and end at
waypoints. If a leg does not start or end at an existing waypoint then a new waypoint will be created automatically (to change the new waypoint data, see section 5-2-7).
You can not use a Danger waypoint in a
route.
1 In the chart window, press
MENU
and select
New route.
2 The route is given a default name:
i Change the name if necessary.
ii Select Ok.
3 To enter the legs of the route:
i Move the cursor to the start of the
route and press
ENTER
.
7-2 Managing routes
7 Navigation: Routes
A route is a list of waypoints that the boat can navigate along. Routes can be created, changed and deleted.
The Instrument can have up to 25 routes. Each route can have up to 50 waypoints.
A route can:
Start and stop at the same waypoint .
Include waypoints more than once.
The Instrument can navigate along a route in either direction. Waypoints on the route can be skipped.
Routes are a powerful feature when the Instrument is connected to an autopilot, allowing the vessel to be automatically guided along the route.
CAUTION
!
!
WARNING
Make sure that routes do not cross land or dangerous water.
CAUTION
!
!
WARNING
After creating or changing a route, display the route on the chart and check that it does not cross land or dangerous water.
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8120 Installation and Operation Manual29
ii A waypoint is created with a default
name. to save this waypoint press
ENTER
,
to edit the waypoint refer to 5-2-7
iii Press
ENTER
a dotted leg line is displayed from the cursor to the previous waypoint
iv Move the cursor to the end of the first
leg and press
ENTER
.
v Repeat i to iv until the last waypoint in
the route is placed and saved
vi Press
ESC
to complete the route
Menu options while creating a route:
1 To add a waypoint to the route
i Press
MENU
and select Add.
2 To insert a waypoint in the route by
breaking one leg into two:
i Move the cursor to the leg you want to
break.
ii Press
MENU
and select Insert.
iii Move the cursor to where the new
route waypoint will be.
iv Press
ENTER
.
3 To move a waypoint in the route:
i Move the cursor to the waypoint to
move.
ii Press
MENU
and select Move.
iii Move the cursor to where the waypoint
will be.
iv Press
ENTER
.
4 To remove a waypoint from the route:
i Move the cursor to the waypoint to
remove from the route.
ii Press
MENU
and select Remove. The waypoint is removed from the route, but the waypoint is not deleted.
5 To start navigating the route
i Press
MENU
and select Start
6 To end creating the route
i Press
MENU
and select End
7 To delete the route
i Press
MENU
and select Delete
ii Select yes to confirm.
Tip: The distance and bearing calculator
can also be used to enter a course and save it as a route (see section 3-3).
B. Creating a new route from the routes window
1 In the routes window, press
MENU
and
select Create.
2 A new route, with a default name and no
waypoints, is displayed.
3 To change the route name:
i Select the route name at the top of the
window and press
ENTER
.
ii Change the name if necessary.
iii Press
ENTER
.
4 To insert a waypoint in the route:
i Select where the waypoint will be:
To insert the first waypoint in a new
route, select Leg 1.
To insert a waypoint at the end of the route, select the unused leg at the end of the list of waypoints.
Otherwise, select the waypoint to insert the new waypoint in front of.
ii Press
ENTER
. A list of waypoints is
displayed. Select the waypoint to use.
As waypoints are inserted, the distance
and bearing of each leg is shown automatically. If the route has more waypoints than will fit on the window, press
or
to see them.
5 To remove a waypoint from the route:
i Select the waypoint to remove.
ii Press
MENU
and select Remove.
6 Repeat this process until the route is
finished.
7 Press
ESC
.
8 Display the route on the chart (see section
6-2-3) and check that the route does not cross land or dangerous water.
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8120 Installation and Operation Manual30
7-2-2 Editing a route
Editing a route from the chart
1 In the routes window, select the route to
edit. Press
MENU
and select Edit on chart.
2 The selected route is displayed on the
chart, with a circle around the first waypoint.
3 Edit the route as described in section 6-2-1
A, starting at step 4.
Editing a route from the routes window
1 In the routes window, press or
to
highlight the route to edit. Press
MENU
and
select Edit.
2 The selected route is displayed: the route
name and a list of the waypoints.
3 Edit the route as described in section 6-2-1
B, starting at step 3.
7-2-3 Displaying a route on the chart
To view the selected route at the centre of the window:
1 In the routes window, press
or
to
highlight the route to window. Press
MENU
and select Display.
Or, in the Chart window, press
MENU
, select Find, then select Route. Select a route from the list.
2 The Instrument displays the selected route
on the chart.
7-2-4 Deleting a route
1 In the routes window, press
or
to
highlight the route to delete. Press
MENU
and select Delete.
2 Select Yes to confirm.
7-2-5 Deleting all routes
1 In the routes window, press
MENU
and
select Delete all.
2 Select Yes to confirm.
7-2-6 Navigating a route
See section 3-1-3.
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8120 Installation and Operation Manual31
GPS worldwide navigation
The US Government operates the GPS system. Twenty-four satellites orbit the earth and broadcast position and time signals. The positions of these satellites are constantly changing. The GPS receiver analyses the signals from the closest satellites and calculates exactly where it is on earth. This is called the GPS position.
The accuracy of the GPS position is typically better than 10 m (33 ft) for 95% of the time. A GPS antenna can receive signals from the GPS satellites when it is almost anywhere on earth.
DGPS
A DGPS system uses correction signals to remove some of the errors in the GPS position. The Instrument can use one of two types of DGPS system:
WAAS and EGNOS DGPS
WAAS and EGNOS are two satellite based
DGPS systems. The correction signals are broadcast by satellites and are received by the Instrument’s standard GPS antenna. The accuracy of the corrected GPS position is typically better than 5 m (15 ft) for 95% of the time.
WAAS covers all of the USA and most of
Canada. EGNOS will cover most of Western Europe when it becomes operational.
8 Satellites
Differential beacon DGPS
Differential beacons are land based radio
transmitters that broadcast correction signals that can be received by a special receiver on the boat. Differential beacons are usually only installed near ports and important waterways, and each beacon has a limited range. The accuracy of the corrected GPS position is typically better than 2 to 5 m (6 to 16 ft).
GPS receiver
Navman GPS units have a sensitive 12-channel receiver, which tracks signals from all GPS satellites visible above the horizon and uses measurements from all satellites more than 5° above the horizon to calculate the position.
Each time a GPS receiver is turned on, it normally takes about 50 seconds before it outputs the first position. Under some circumstances it will take up to two minutes or longer.
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8120 Installation and Operation Manual32
The satellite window has information about the GPS satellites and GPS position.
To go to the satellite window, press
DISPLAY
,
select Other, then select Satellite.
The satellite window shows:
8-1 Satellite window
A Status of GPS antenna, for example
Acquiring, GPS fix, No GPS. If the unit is in Simulate mode it displays Simulate (see section 2-6).
B Time and date from GPS satellites. Time is
local time (UTC [GMT] plus local offset, see section 17-12)
C HDOP: The error in the GPS position
caused by satellite geometry. A low value indicates a more precise fix, a high value a less precise fix
D Signal strengths of up to twelve visible
GPS satellites. The higher the bar the stronger the signal
E Boat position
F Positions of visible GPS satellites:
Outer circle is horizon
Inner circle is 45° elevation
Centre is directly above
North is at top of window
G If the boat is moving, COG is a line from
centre
9 Sonar fishfinding: Introduction
Sonar functions require an optional sonar transducer to be installed and set up.
This section explains how to interpret the sonar displays, when and why to use the different frequencies and how fish are detected and displayed.
It also describes Gain and Range and shows examples of some of the different sonar displays.
9-1 Using the Instrument
The Instrument uses a sonar transducer attached to the hull. The transducer generates an ultrasonic pulse (sound that is above the hearing range of the human ear), which travels down towards the bottom at a speed of about 4800 ft/sec (1463 m/sec), spreading out into a cone shape.
When the pulse meets an object, such as a fish or the bottom, it is partly reflected back up towards the boat as an echo. The depth of the object or bottom is calculated by the Instrument by measuring the time taken
between sending a pulse and receiving the echo. When an echo has been returned, the next pulse is sent.
The Instrument converts each echo into an electronic signal, displayed as a vertical line of pixels. The most recent echo appears on the extreme right of the window, with the older echoes being scrolled towards the left, eventually disappearing off the window.
The scroll speed depends upon the water depth and scroll speed setting. See sections 17-3 and section 8-2, for more information.
G
A
B
C
D
E
F
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8120 Installation and Operation Manual33
the data to move across the window, whereas at 20 ft (6 m) it takes only about 25 seconds.
The scroll speed can be set by the user to display either a longer history with less fish information or a shorter history with more fish details (see section 17-3).
If the boat is anchored, the echoes all come from the same area of bottom. This produces a flat bottom trace on the window.
The screen shot shows a typical sonar window with the Fish symbols turned Off. The sonar pulse generated by the Instrument transducer travels down through the water, spreading outwards in a cone shape. The cone width is dependent upon the frequency of the pulse; at 50 kHz it is approximately 45°, and at 200 kHz it is approximately 11°.
The differences in the cone width affect what is displayed. (See section 8-3)
9-2 Interpreting the display
The sonar windows do not show a fixed distance travelled by the boat; rather, they display a history, showing what has passed below the boat during a certain period of time.
The history of the sonar signal displayed depends the depth of the water and the scroll speed setting.
In shallow water, the echoes have a short distance to travel between the bottom and the boat. In deep water, the history moves across the window more slowly because the echoes take longer to travel between the bottom and the boat. For example, when the scroll speed is set to Fast, at depths over 1000 ft (300 m) it takes about 2 minutes for
The appearance of echoes displayed are affected by:
• The Instrument settings (see sections 17-3, 8-5 and 8-6)
• Echoes (different fish types, different bottom types, wrecks and seaweed; see section 8-2)
• Noise (water clarity and bubbles; see section 8-2).
Cruise, Fishing and Manual Modes
The Instrument has three sonar operating modes:
• Cruising mode: Use this when on the move. The Instrument automatically adjusts its settings to compensate for water clarity and to display the bottom.
• Fishing mode: Use this when fishing. The Instrument automatically adjusts its settings to compensate for water clarity and to best display fish, the bottom and other details.
• Manual mode: Use this to fine-tune the Instrument settings by hand. Best results are often achieved in manual mode, but practice and experience are required to obtain the optimum settings for different conditions.
For more information about modes, see sections 8-5 and 8-6.
CAUTION
!
!
WARNING
Use the automatic Cruising or Fishing modes when learning to use the Instrument or when travelling at speed.
A
C
B
D
A School of fish
B Hard bottoms such as rock and coral
show as wide bands
C Single fish
D Soft bottoms such as mud, weed
and sand show as narrow bands
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8120 Installation and Operation Manual34
CAUTION
!
!
CAUTION
DANGER
WARNING
Bottom types
Mud, weed and sandy bottoms tend to weaken and scatter the sonar pulse, resulting in a weak echo. Hard, rocky or coral bottoms reflect the pulse, resulting in a strong echo.
Frequency and cone width
Water Cone width Cone width Depth at 50 kHz at 200 kHz
25 20 5 50 40 10 100 80 20 150 130 30 200 170 40
300 250 60
400 330 80
600 500 120
800 660 150
1000 830 190
45° cone
11° cone
Strength of echoes
The colours indicate differences in the strength of the echo. The strength varies with several factors, such as the:
• Size of the fish, school of fish or other object.
• Depth of the fish or object.
• Location of the fish or object. (The area covered by the ultrasonic pulse is a rough cone shape and the echoes are strongest in the middle.)
• Clarity of water. Particles or air in the water reduce the strength of the echo.
• Composition or density of the object or bottom.
Planing hulls at speed produce air bubbles and turbulent water that bombard the transducer. The resulting ultrasonic noise may be picked up by the transducer and obscure the real echoes.
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8120 Installation and Operation Manual35
Shadows
Shadows are created around areas where the ultrasonic beam cannot ‘see’. These areas include hollows on the bottom or beside rocks and ledges, where the strong echoes returned off the rocks obscure the weak echoes of the fish and may also create a double bottom trace. See following for an example of the sonar window in such an environment. A double bottom trace is shown on the window.
When looking for fish with the wide angled 50 kHz frequency, be aware of increased shadows. Use the high frequency 200 kHz in areas that have rocks and ledges because this frequency reduces the shadow effect considerably.
Sonar window of same areaExample of shadows
A Fish is visible on the window
B Fish is hidden by the strong
echoes off the bottom and is not shown on the window
A
B
A
B
A
A
9-3 Single and Dual frequency fishfinding
When to use 50 kHz
The 50 kHz frequency is particularly suitable for use in deep water, typically greater than 500 ft (150 m).
At 50 kHz, the cone covers an area of water about four times wider than the 200 kHz cone and penetrates to a greater depth with minimal loss of the return signal.
However, it produces a lower definition display with more shadow compared to the 200 kHz frequency. This means that a group of small fish, for example, could be displayed as a single item, while any fish very close to the bottom may not be found at all.
This frequency is useful for getting a deep, wide overview of the area so that any areas of interest can be identified and then examined in detail with the 200 kHz frequency.
Sonar frequencies
The Instrument has two sonar frequencies, 200 kHz and 50 kHz. To select the sonar frequency to use:
1 Go to a sonar window (see section 9).
2 Press
MENU
, select Frequency and select
200 kHz, 50 kHz,or Mixed.
When to use 200 kHz
The 200 kHz frequency is especially suitable for use in shallow and medium depth water, typically less than 500 ft (150 m) and while running at speed.
At 200 kHz, the narrow cone reduces any noise caused by air bubbles.
The 200 kHz frequency generates a higher definition pulse which produces little shadow and returns excellent detail over a small area of bottom. Therefore, it gives excellent bottom discrimination capability and is particularly good at showing individual fish, including bottom dwellers.
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8120 Installation and Operation Manual36
A Narrow angle, more detailed 200 kHz cone
B Wide angle, less detailed 50 kHz cone
B B
A
When to use Mixed
The Mixed frequency combines the 200 kHz and the 50 kHz echoes on one sonar window, filling in detailed echoes in the centre of the sonar cone.
When to use 50/200 kHz
Operating the Instrument at both 50 kHz and 200 kHz simultaneously on a split window can be very useful when operating in shallow to medium water, typically less than 500 ft (150 m), because the 50 kHz section of the window shows the general area, while the 200 kHz section can be viewed simultaneously for a more detailed look at any interesting feature.
To use 50/200 kHz, select the Split 50/200 window (see section 9-4).
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8120 Installation and Operation Manual37
50 kHz display 200 kHz display
200/50 Khz display Mixed display
1 minute ago 30 seconds ago Now
Comparison of the same fish scenario displayed at different frequencies:
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8120 Installation and Operation Manual38
9-4 Fish detection and display
Where to find fish
Underwater features like reefs, wrecks and rocky outcrops attract fish. Use the 50 kHz or 50/200 kHz frequency window to find these features, then look for fish by passing over the feature slowly several times using the Zoom window (see section 9-2). If there is a current, the fish will often be found downstream of the feature.
When fishing with the Instrument with the Fish symbols Off, a weak fuzzy band may appear between the bottom trace and surface. This might indicate a thermocline
- a rapid change in water temperature, such
as the edge of a warm or cold current. The temperature difference can form a barrier which the fish may not swim through. In fresh water, fish often collect around a thermocline.
Fish symbols
The Instrument uses NAVMAN’s SBN II technology to analyse sonar echoes and identify which are likely to be fish. The Instrument can be set up to display a fish symbol and the depth over these echoes (see section 17-3, Fish symbols). While SBN II is very sophisticated it is not foolproof - there will be times when the Instrument will not be able to differentiate between fish and large air bubbles or rubbish.
Depending on the strength of a fish signal, the Instrument can display a small, medium or large symbol (see section 17-3, Fish filter).
To see the maximum amount of information from the echoes, turn Fish symbols off. Fish appear as arches on the window.
Fish arches
In good conditions, a fish passing through the cone-shaped ultrasonic pulse is displayed as a fish arch. The 50 kHz frequency uses a wider cone than the 200 kHz frequency. This makes the fish arches easier to see.
A fish arch starts when a fish enters the weak edge of the sonar cone, generating a weak echo that is displayed as the start of the fish arch. As the fish moves closer to the middle of the cone, the distance between the transducer and the fish reduces and the echo is displayed at progressively shallower depths, producing a rising shape. When the fish passes directly beneath the middle of the cone, the echo becomes strongest and thickest. As the fish passes out of the middle of the cone the reverse happens with a progressively weaker and deeper echo.
There are many reasons why fish arches may not be seen. For example:
• Poor transducer installation (see Transom Transducers Installation Guide).
• If the boat is anchored then fish will tend to show on the window as horizontal lines as they swim into and out of the transducer sonar beam. Slow speeds in deeper water give the best fish arch returns.
• Range is important. It will be much easier to see fish arches when using zoom mode to concentrate on a particular section of water, rather than just displaying everything from the surface to the bottom. Zooming increases screen resolution and is necessary for good fish arches.
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8120 Installation and Operation Manual39
Fun symbol + depth
Normal fish symbolFun fish symbol
9-5 Range
Range is the vertical depth displayed on the Instrument sonar window. For example, if the range is 100 m, then the sonar window shows depths between 0 and 100 m. The range is displayed at the bottom, right corner of a sonar window.
The Instrument has two range modes:
Auto: The Instrument adjusts the range
automatically so that the bottom of the water is always shown at the bottom of the window. Auto range is recommended for normal operation.
To set Auto mode:
1 Go to a sonar window (see section 9).
2 Press
GOTO AUTO
Manual: The Instrument does not adjust
the range automatically. If the bottom depth is below the range, the bottom will not appear on the window. Manual range is useful if the bottom depth changes rapidly, because Auto range will cause the window to change range frequently.
To set Manual range or to change the
range:
1 Go to a sonar window (see section 9).
2 Either press
to increase range or
press
to decrease range
• It is difficult to get fish arches in shallow water as the transducer sonar beam is very narrow near the surface and fish do not stay within the beam long enough to display an arch. Several fish in shallow water tend to display as randomly stacked areas of colour.
• Wave motion may result in distorted fish arches.
CAUTION
!
!
WARNING
Use the Auto range when learning to use the Instrument or when travelling at speed.
Zoom range and offset
The sonar Zoom and Bottom windows can show a magnified part of the range (see sections 9-2 and 9-3).
Fish arch + depth
23
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8120 Installation and Operation Manual40
This window is called the gain window.
9-6 Gain and threshold
Gain and threshold settings control the amount of detail displayed on a sonar window:
Gain: The gain of the sonar receiver. The gain should be high to display good detail, but if the gain is too high then information from the strong bottom signal is lost and false echoes might be displayed. There is a separate gain setting for each sonar frequency, 50 kHz and 200 kHz.
Threshold: Return echoes less than the threshold are ignored. The threshold should be as low as possible, but if the threshold is too low, unwanted noise will be displayed. Threshold is set as a percentage of gain. For example, if the threshold is 50 %, then return echoes less than 50 % of the maximum signal are ignored. There is a separate threshold setting for each sonar frequency, 50 kHz and 200 kHz.
The gain window
To display or change the current settings for gain, select a sonar window and press
ENTER
.
Select Threshold to display the thresholds.
Changing mode
The Instrument has three operating modes, In Cruising and Fishing modes, the Instrument automatically adjusts gain and threshold for good performance. In manual mode, you can hand adjust the settings.
To change the mode from the Gain window, Select Mode and then select Fishing,
Cruising or Manual. When you select Manual, the Instrument reverts to your last
manual settings.
Changing gain and threshold
1 In the Gain window, press or
to select
the setting to adjust.
2 Press
or
adjust the setting. The
Instrument changes to Manual mode.
Tip: Use the A-scope window to help set
gain or threshold manually (see section 9-5).
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8120 Installation and Operation Manual41
To show the Sonar window, press
DISPLAY
, then
select Sonar.
There are five kinds of sonar window. To use a window, press
MENU
, select Sonar splits,
then select the type of window to use:
No split: Sonar history window at a single or mixed frequency (see section 9-1).
Split zoom: Sonar history plus a zoomed section (see section 9-2)
Split bottom: Sonar history plus a bottom trace in a zoomed section (see section 9-3)
Split 50/200: Sonar histories at 50 and 200 kHz (see section 9-4)
Split A-Scope: Sonar history plus echo strength (see section 9-5)
10 Sonar fishfinding: Windows
10-1 Sonar history window - no split
A Optional data header (see section 2-7-3)
B Optional compass (see section 2-7-4)
C Depth
D Colour bar
E Bottom
F Range
G Fish symbols with depth
H Depth line
The window scrolls from right (most recent echoes) to left (oldest echoes).
If the window is split, adjust the split ratio if required:
1 Press
MENU
and select Sonar window split.
2 Press
or
to adjust the ratio.
3 Press
ENTER
.
10-1-1 Extended history mode
To review an old sonar echo, use
and
to move back and forward through the sonar history. The time since the echoes shown on the screen were recorded is displayed at the bottom of the screen. Press
ESC
to return to
the most recent echo.
The digital depth shown is always the current depth, even in extended history mode.
The History Position Bar indicates the age of the most resent echo on the screen, and the position of the current screen in the recorded history.
History position bar
H
A B
C
D
E
F
G
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8120 Installation and Operation Manual42
10-2 Sonar Zoom window
A Divider line
B Depth line marks the centre of the
zoomed area
C Zoom bar
D Zoom section
E Sonar history
The window shows the sonar history on the right and the zoomed section on the left.
The zoom bar on the far right shows the area of the history that is magnified in the zoom section:
• Press
or
to adjust the zoom range (the range of depths included in the zoom section).
• If Bottom lock is on, the zoom depth (the depth of the zoom section) is adjusted automatically so that the bottom is always displayed in the zoom section.
If Bottom lock is off, press
or to manually adjust the the zoom depth. If bottom lock is on it will turn off.
Bottom lock
To turn Bottom lock on or off:
1 Press
MENU
and select Bottom lock.
2 Select On or Off.
or If Bottom lock is on, pressing or
will turn it off.
A
B
C
D E
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8120 Installation and Operation Manual43
10-3 Sonar Bottom window
The window shows the sonar history on the right and the bottom signal as a flat trace in the centre of the zoom section on the left. The flat trace make it easy to compare the echo strengths shown in the bottom signals. This can help to identify the type of bottom and objects close to the bottom.
The zoom bar on the far right shows the area of the history that is magnified in the zoom section:
• Use the
or
keys to adjust the zoom
range.
• The Instrument calculates the zoom depth automatically.
It is not necessary to turn Bottom lock on for this window.
A Zoomed bottom signal
B Sonar history
10-4 Sonar 50/200 window
The window shows:
A the 50 kHz sonar history on the left
B the 200 kHz sonar history on the right.
Gain can be set independently for each frequency (see section 8-6). Range applies to both frequencies (see section 8-5).
A B
A
B
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8120 Installation and Operation Manual44
10-5 Sonar A-Scope window
The window shows the sonar history on the left and the A-Scope window on the right. The A-Scope shows:
Setting gain and threshold
It is convenient to use the A-scope window when adjusting gain and threshold manually. Follow this procedure to adjust gain and threshold for normal circumstances:
1 Switch to a sonar window (see section 9). If
necessary, press
or to adjust range so
that the bottom is displayed.
2 If necessary, select the sonar frequency to
adjust the settings for. Press
MENU
, select
Frequency and select 200 kHz or 50 kHz.
3 Press
MENU
, select Sonar splits then select
Split A-scope.
4 Press
ENTER
to display the Gain window. To adjust gain or threshold for a frequency, press
or
to select the setting to
adjust, then press
or
to change the
setting.
5 Set threshold to zero.
6 Adjust Gain so the peak of the strong
signal from the bottom just touches the gain line.
7 Adjust threshold so that it is just to the
right of the noise.
8 Press
ESC
to close the gain window.
9 If required, repeat these steps to
adjust gain and threshold for the other frequency.
Note: Setting the gain higher will display more detail from weak echoes, like fish, but will loose detail from the strong echo from the bottom.
Fish recognition
The echo strengths shown on the A-scope can be useful in recognising the type of fish. Different species of fish have different sizes and shapes of swim bladders. The air in the swim bladder reflects the ultrasonic pulse, so the strength of the echo varies between fish species according to the size and shape of the swim bladder.
When catching fish from a school, note the species and the strength of the echo that it returns on the A-scope. Then, when that particular echo is seen again, it is likely to be the same fish species.
Bottom type
The shape of the echo strengths in the A-Scope can help you to recognise the type of bottom.
A, B, C The strengths of echoes being
received now from different depths - the longer the horizontal line the stronger the signal:
A Unwanted noise echoes.
B Echoes from fish and the bottom
C The strongest echo, usually from the
bottom
D A vertical line showing the threshold,
the weakest echo to display on the sonar history
E A vertical line showing the gain setting;
echoes above this strength will display as the maximum signal strength
Use the A-Scope while adjusting the gain and threshold settings manually (see section 8-6).
E
D
C
B
A
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8120 Installation and Operation Manual45
11 Gauges window
The Gauges window shows boat data, such as water speed, as analog gauges. To select the Gauges window, press
DISPLAY
, select More, then select Gauges. Before using the Gauges window, set Speed range, Max RPM and Max fuel flow (see section 17-11).
Selecting a Gauges layout
The Gauges window can show one of four gauge layouts. To select a layout from the Gauges window, press
MENU
, select Layout
and select a layout.
Changing a gauge layout
You can change the data displayed on each gauge in a layout.
1 Select the layout to change (see above).
2 Press
MENU
and select Gauge setup.
3 Highlight the gauge to change. Press
ENTER
and select the data to display in the gauge.
4 Repeat the above step to change other
gauges.
5 Press
ESC
.
12 Data window
The data window has large numeric data fields and a graph of depth and water temperature if available. To go to the data window, press
DISPLAY
, select More, then select
Data.
To select what data is displayed:
1 Press
MENU
and select Data setup.
2 Change a data field:
i Press the cursor keys to highlight the
field.
ii Press
ENTER
to display a menu of data
items.
iii Select a data item that is available on
your system or select None to leave the field empty.
3 Repeat the above step to set the other
data fields.
4 Press
ESC
.
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8120 Installation and Operation Manual46
13 Fuel functions and display
The Fuel functions require optional fuel sensors to be installed.
13-1 When you add or remove fuel
When you add or remove fuel in a boat with no SmartCraft fuel tank level sensors, you must tell the Instrument, otherwise REMAINING, RANGE and the low fuel alarm will be meaningless.
A When you completely fill the tank
1 Fill the tank.
2 Press
SETUP
then select Fuel.
3 Select Tank full.
Note: Underfloor fuel tanks are often difficult to refill to the same level twice, due to air pockets. With underfloor fuel tanks:
Trim the boat to the same angle in the
water each time you follow procedure A.
Mostly use procedure B below when
adding fuel, but completely fill the tank and follow procedure A about every tenth time you add fuel.
B When you part fill the tank
1 Before adding fuel, go to the fuel window
and write down the value of Remaining, which is the amount of fuel now in the tank.
2 Add fuel to the tank, writing down how
much you add.
3 Add together the two figures you have
written down, to calculate the amount of fuel now in the tank.
4 Press
SETUP
then select Fuel.
5 Set Remaining to the amount of fuel
that you calculated was now in the tank.
Note: If you follow procedure B every time you add fuel, then a small error will accumulate, because it is hard to measure exactly how much fuel you add. To avoid this, completely fill the tank and follow procedure A about every tenth time you add fuel.
C When you remove fuel
Repeat procedure B, but subtract the fuel you have removed from the original amount of fuel in the tank to calculate the amount of fuel now in the tank.
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8120 Installation and Operation Manual47
13-2 Fuel window
To go to the Fuel window, press
DISPLAY
, select Other, then select Fuel. The window is different if engine RPM is available (requires SmartCraft or diesel sensors to be installed):
The Fuel window shows
Used
The fuel used during a trip. When you want to start measuring how much fuel is used, press
SETUP
, select Fuel and select Clear used.
Remaining
The amount of fuel remaining in the tank.
Flow
The fuel consumption per hour. For twin engine installations, the fuel flow for each engine is shown separately. This is useful for checking that both engines are under the same load.
Speed
If the Instrument has both GPS and paddlewheel speed available then you can select which to use. The choice affects the calculated Range and Economy (see section 17-5 Speed source).
If the Instrument uses a paddlewheel sensor to measure speed, then the speed must be accurately calibrated (to calibrate the Instrument paddlewheel, see section 17-11).
Consumption
The fuel used per unit of distance travelled. The smaller this number, the better the fuel economy. Adjust the throttle and trim to achieve the lowest consumption.
Economy
Economy is the distance travelled per unit of fuel used. The Instrument calculates this from the boat speed and fuel used. The bigger this number, the better the fuel economy
Range
The estimated boat range at the current fuel flow.
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8120 Installation and Operation Manual48
13-3 Fuel consumption curves
A fuel consumption curve is a powerful tool for assessing your boat performance in different conditions and for helping you to run at the most economical speed for the conditions. Fuel consumption curves require engine RPM, which requires SmartCraft or diesel sensors to be installed.
13-3-1 Making a fuel consumption curve
Making a fuel consumption curve requires running the boat in a straight line through the engine’s full RPM range for about 15 minutes.
For your first curve, choose a calm day with light wind and little current; have a typical load and a freshly cleaned hull. Then you can make fuel consumption curves for different boat, weather or sea conditions. Compare these with your first curve to see how your boat’s performance changes with conditions.
Making a curve
1 Start running the boat in a straight line.
2 Press
SETUP
then select Fuel.
3 Select Fuel consumption curve,
then select New.
4 Enter the comfortable maximum RPM you
have measured for the engine. Do not use the maker’s maximum RPM.
5 The Instrument then asks you to set
the minimum RPM. Set the throttle for minimum RPM; for a twin engine boat set both engines to about the same minimum RPM.
Now, do not change the engine speed.
Wait for about 60 seconds for the boat to stabilise, then press
ENTER
. Wait while the
Instrument records the data.
6 The Instrument then asks you to set the
throttle to achieve a target RPM. For a twin engine boat set both engines to about the target RPM. When the engine RPMs are correct, the Target RPM box will turn green.Now, do not change the engine speed. Wait for about 60 seconds for the boat to stabilise, ensuring the Target RPM box stays green. Then press
ENTER
. Wait
while the Instrument records the data.
7 The Instrument repeats the above step to
record data up to the maximum RPM.
Then the Instrument asks if you want to
save the curve. Select Yes. The Instrument asks for a name for the curve. Change the default name if required, then press
ENTER
.
The new curve is stored.
Note
To interrupt making the curve at any time, press
ESC
.
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8120 Installation and Operation Manual49
13-3-2 Managing fuel consumption curves
Record several curves for different conditions.
Renaming a curve
1 Press
SETUP
then select Fuel.
2 Select Fuel consumption curve.
Select Name, press
ENTER
and select the
name of the curve to rename.
3 Select Rename and press
ENTER
. Change
the name and press
ENTER
.
Deleting a curve
1 Press
MENU
once or more until the Setup
menu is displayed, then select Fuel.
2 Select Fuel consumption curve.
Select Name, press
ENTER
and select the
name of the curve to delete.
3 Select Delete and press
ENTER
.
13-3-3 Using fuel consumption curves
A fuel consumption curve is displayed on the fuel window:
a For a twin engine boat, keep the RPM of
both engines similar while using a curve.
b More information about fuel consumption
curves is available in Navman’s Diesel flow sensors installation and operation manual.
Displaying a curve
1 To go to the Fuel window, press
ENTER
,
select Other, then select Fuel.
2 Press
MENU
, press
ENTER
and select the name of the curve to display on the fuel window.
Using a curve
Compare your boat’s performance now, at the current RPMs, with the boat’s performance when you made the curve. You can compare your boat’s performance now with a curve made under ideal conditions or with a curve made under similar conditions.
Information in a curve
A RPM of the boat now. For a twin engine
boat, the RPM is the average of the two RPMs.
B Red curve: boat speeds at different
RPMs recorded when you made this fuel consumption curve.
C Red marker: the boat speed now. This
marker is below the red curve, showing that the boat speed now at this RPM is less than when you recorded the curve.
B
D
C
E
A
F
D Blue curve: fuel consumption at different
RPMs recorded when you made this fuel consumption curve.
E Blue marker: the fuel consumption now.
This marker is below the blue curve, showing that the fuel consumption now at this RPM is better than when you recorded the curve.
F If the blue curve has a dip, then running
the boat at this RPM will give the best speed for the least fuel consumption.
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8120 Installation and Operation Manual50
CAUTION
!
!
CAUTION
DANGER
WARNING
14 Tides window
The tides window is available on Chart cards. The tides window shows tide information at a tide station for the selected date.
3 A list of tide stations are displayed. Select
the tide station to display. The chart redraws with the tide station centred.
4 Press
MENU
and select Chart info.
5 Select Tide height.
Choosing the date of the tide chart
1 From the tides window, press
MENU
.
2 Select Today, Next day or Prev day.
To choose a different date from these,
select Set date, edit the date, press
ENTER
.
A Tide station name and distance from boat
B Current time and chosen date for display
C Tide chart
D Night
E Dawn
F Day
G Dusk
H Tide height
I Time cursor, a vertical dotted line. Press
or
to move cursor sideways
J Time of cursor and tide height at that time
K Data for the chosen date
L Tide height cursor, a horizontal dotted
line. Press
or
to move cursor up and
down.
M Height of cursor on the tide chart
N Moon phase for moon at the current time
on the chosen date
The tides window shows data for the chosen date
The tides window requires the local time offset to be set to work correctly (see section 14-11)
To show the tides window for the tide station nearest to the boat, press
DISPLAY
, select
Other, then select Tides.
To go to the tides window for any tide station:
1 From the chart window, press
MENU
and
select Find.
2 Select Tide stations.
A
C
B
I
H
J
D
G
F
N
K
L
M
E
F
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8120 Installation and Operation Manual51
15 User card window
A user card is an optional plug-in card that can store data files (see section 1-3). There are three types of files: waypoints, routes or a track.
To go to the user card window, press
DISPLAY
,
select Other, then select User card.
4 The new file is created. Change the name
if required. The new file appears in the file list.
Loading data from the user card to the
Instrument
This loads one file from the user card to the Instrument:
A waypoints file: The new waypoints are
added to any existing waypoints in the Instrument. If a new waypoint has the same name as an existing waypoint but has different data, the Instrument displays both waypoints. Select:
Skip: Do not load the new waypoint.
Replace: Load the new waypoint and
replace the existing one.
Skip all: Do not load any new
waypoints which have the same names as existing waypoints.
Rplc all: Load all new waypoints
which have the same names as existing waypoints; the new waypoints replace the existing waypoints.
A routes file: The new routes are added
to any existing routes in the Instrument. If a new route has the same name as an existing route but has different data then the Instrument asks which route to keep.
A track file: The new track will replace the
existing track in the Instrument.
CAUTION
!
!
CAUTION
DANGER
WARNING
1 Before using a user card, remove any
chart card and plug the user card in. When you have finished with the user card, remove the user card and replace the chart card (see section 1-3).
The user card window has:
File list
A list of the files on any user card in the Instrument. If there are more files than will fit on the window, press
or
to scroll up or
down a page at a time.
Waypoints, Routes
The number of waypoints and routes currently in the Instrument.
Track 1 to Track 5
The number of points in tracks 1 to 5 currently in the Instrument.
Note:
1 To save Instrument data onto the user
card, use the Save command (see below).
2 Data stored on the user card and shown
on the file list is not available to be used by the Instrument until loaded into the Instrument with the LOAD command (see below).
Saving data to the user card
This saves all the Instrument’s waypoints, all the Instrument’s routes or one of the Instrument’s tracks to one file on the user card.
1 Press
MENU
and select Save.
2 Select Waypts, Routes or Tracks.
3 For Tracks, select the track number to
save.
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8120 Installation and Operation Manual52
To load a file to the Instrument:
1 Select the file to load.
2 Press
MENU
and select Load.
Deleting a file from the user card
1 Select the file to delete.
2 Press
MENU
and select Delete.
3 Select Yes to confirm.
Rereading the file information
This reads the file names from the user card and displays them. Reading does not load any file data into the Instrument. You should not need to do this.
1 Press
MENU
and select Card.
2 Select Read.
Formatting the user card
Formatting prepares a user card for use. Format the card if there is an error message saying that the card is not formatted. Any data files on the card are deleted.
1 Press
MENU
and select Card.
2 Select Format.
3 Select Yes to confirm.
16 DSC/Buddy track windows
Buddy track requires an optional Navman DSC VHF radio to be installed. Buddy track tracks other boats which have DSC radios connected to their GPS receivers by NavBus and are in VHF range. For information on setting up and using the VHF radio for buddy track, see the radio’s operation manual.
To go to the DSC windows, press
DISPLAY
, select
Other, then press
or
to select one of the
three windows: Distress, Poll or Buddy track.
If there are more items than will fit on the window, press
or
to see the others.
CAUTION
!
!
WARNING
Do not format a chart card.
Sorting the file names
This sorts the displayed file names.
1 Press
MENU
and select Sort.
2 Select sort by Name, Type or Time.
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8120 Installation and Operation Manual53
Distress
Boats that have sent DSC distress messages and their positions.
16-1 The windows
Poll
Boats you have manually polled on the VHF radio, and their position at that time.
Buddy track
Buddy boats from your DSC radio. The radio regularly calls the boats and updates their positions.
When your DSC radio receives a distress message, the Instrument creates a distress waypoint at the boat position. Distress waypoints have default names like DSTRSS01. The Instrument displays a Distress warning.
Select:
OK to return to what you were doing.
Display to switch to Chart and display
the position of the boat sending the distress message.
Boat positions
The boat positions on the Instrument can differ from the true boat positions:
Distress: The position is the distress
waypoint, which is where the boat was when it sent the distress message.
Polled boats: The position is where the
boat was when you last polled the boat.
Buddy track:: The position is where the
boat was when your radio last polled the boat.
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8120 Installation and Operation Manual54
Displaying a boat on the chart
1 Press
or
to select a boat.
2 Press
MENU
and select Display. The Instrument switches to chart window, with the selected boat position in the middle (see Boat positions above).
Going to a boat
1 Press
or
to select a boat.
2 Press
MENU
and select Goto. The Instrument starts navigating to the boat’s position (see Boat positions above).
Creating a waypoint
Polled and buddy track boats are not waypoints. To create a waypoint at the position of a polled boat (see Boat positions above):
1 Press
or
to select a boat.
2 Press
MENU
and select Create waypoint. Edit the waypoint data if
required (see section 5-2-7).
Editing a waypoint
A distress message creates a waypoint for the boat or you can create a waypoint at a polled boat’s position. To change the data of these waypoints:
1 Press
or
to select a boat.
2 Press
MENU
and select Edit waypoint. Edit the waypoint data if required (see section 5-2-7).
Deleting a boat
At the Distress or Poll windows:
1 Press
or
to select a boat.
2 Press
MENU
and select Delete. The boat is deleted from that window. Delete any boat waypoint manually (see section 5-2-5).
Buddy track boats automatically disappear from the Buddy track window when your DSC radio can not pick up their signal.
Deleting all boats
At the Distress or Poll windows:
1 Press
or
to select a boat.
2 Press
MENU
and select Delete all. All boats are deleted from that window and any boat waypoints are deleted.
16-2 Using the windows
On a chart window:
A Distress boats are distress waypoints
B Buddy track boats are buddy symbols
A
B
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8120 Installation and Operation Manual55
17 Setting up the 8120
The 8120 has a number of advanced features which are set up through the setup menu. We recommend that you become familiar with the operation of the unit using the default settings before making any changes in these menus.
To go to a setup option menu, press
SETUP
to display the setup menu, then select an option.
Note:
1 The Setup menu options are explained in
the following sections.
2 Section 2-1 describes how to set or change
data in the setup menus.
3 The setup data available will depend on
the optional sensors and instruments installed.
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8120 Installation and Operation Manual56
SmartCraft
(See the SmartCraft
Gateway Installation
and Operation Manual)
Simulate (see 17-14)Calibrate (see 17-11)
GPS (see 17-4)
Sonar (see 17-3)
Track (see 17-6)
Fuel (see 17-5)
Chart (see 17-2)
General, Water, Land and Other submenus (17-2)
Logs (see 17-7) Comms (see 17-10)Units (see 17-9)Alarms (see 17-8)
Time (see 17-12) Favourites (see 17-13)
System (see 17-1)
Setup option menus
Factory default settings are shown. The setup data available will depend on the optional sensors and instruments installed.
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8120 Installation and Operation Manual57
Press
MENU
once or more until the Setup
menu is displayed, then select System:
Language
Select the language for the windows. The options are: English, Italian, French, German, Spanish, Dutch, Swedish, Portuguese, Finnish and Greek.
Tip: In case you can’t read the current language, the language setting is found at the top of the system menu.
Backlight
Select the backlight level for the keys and display (see also section 2-3)
Night mode
Night mode sets the palette for all windows
Normal palette, for daytime
All windows have a palette optimised for
night time.
See also section 2-3. To change only the chart palette, see section 17-2.
Beep volume
Select the beep volume for key presses.
Auto power off
See section 2-2.
Factory reset
This option returns all of the Instrument settings (except the language, waypoints and routes) to the default factory settings shown on the setup menus.
17-1 Setup > System
SmartCraft
No SmartCraft gateway is fitted. Disable
SmartCraft functions.
SmartCraft gateway is fitted. Enable
SmartCraft operation.
See section 18-10.
Buddy track
No appropriate NAVMAN DSC VHF radio
is fitted. Disable Buddy track.
An appropriate NAVMAN DSC VHF radio
is fitted. Enable Buddy track.
See section 18-9
About
Select the About window (see section 17-1-1).
17-1-1 About window
The about window shows:
• The software version and date.
• The world chart version.
• Any card fitted.
• The number of waypoints, routes and tracks you have stored.
• Connector wiring information.
In the unlikely event of having to contact a NAVMAN dealer for service, quote the software version number and date.
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8120 Installation and Operation Manual58
Press
MENU
once or more until the Setup
menu is displayed, then select Chart:
Rotation
The options for chart rotation are:
North up: North is always at the top of
the chart window.
Track up: The chart is rotated so
that the boat direction is to the top of the window. This option is useful for navigating narrow harbours or rivers. The Instrument asks for a course deviation resolution; this is how much the boat direction needs to change to make the chart redraw.
Tip: If the chart redraws too
frequently, increase the course deviation setting.
Course up: This option is only available
if the boat is navigating to a destination. The chart is rotated so that the plotted course to the destination is vertical.
17-2 Setup > Chart
Palette
Select the colour scheme for the LCD window.
The options are:
Normal
Sunlight: Brighter colours, more visible
in sunlight.
Night: Reversed colours for night, to preserve night vision.
Map datum
Instrument GPS positions are based on a worldwide reference (datum) known as WGS
84. Most paper charts are based on WGS
84. However, some paper charts are based
on other datums In these cases, the latitude and longitude coordinates of objects on the Instrument chart window are different to the latitude and longitude coordinates of these objects on the paper chart. This applies to all objects, such as the boat, waypoints, tracks, lines of latitude and longitude and cartographic features such as land, rocks, buoys and depth contours.
Use Map datum to select the Instrument map datum to match the datum of the paper chart. Then, the latitude and longitude coordinates of objects displayed on the Instrument will change to match the corresponding coordinates on the paper chart.
Setting map datum
1 In the Chart setup menu, select Map
datum.
2 Select the map datum for the paper chart
you are using.
3 If you select a datum other than WGS 84
the Instrument asks if you want to apply the NMEA datum offset (see below).
When you change to a chart with a different datum, change the Instrument map datum again.
CAUTION
!
!
WARNING
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8120 Installation and Operation Manual59
NMEA datum offset
If you select a map datum other than WGS 84, the map datum offset can be applied to latitude and longitude coordinates sent on the Instrument NMEA output:
Latitude and longitude coordinates
displayed on any NMEA repeater do not match the coordinates on the Instrument. Latitude and longitude coordinates broadcast on any NMEA VHF transmitter will be the same as the coordinates on a WGS 84 chart.
Latitude and longitude coordinates
displayed on any NMEA repeaters match the coordinates on the Instrument. However, latitude and longitude coordinates broadcast on any NMEA VHF transmitter will be slightly offset from coordinates on a WGS 84 chart.
Map shift
4 Press
MENU
and select Set.
5 Press
ESC
to set the new map shift. The boat will now be displayed at its actual location.
Clearing the map shift
Clearing the map shift removes any map shift from the cartographic features on the Instrument chart window.
1 In the Chart setup menu, select
Map shift.
2 Press
MENU
and select Clear.
3 Press
ESC
.
CAUTION
!
!
WARNING
Warning: Map shift is for eliminating minor offsets. It should not be used if the correct datum is available. Use map shift with caution: incorrect application will cause incorrect boat positions.
Some charts have consistent position errors. To correct this, apply a map shift. After a map shift:
The positions of cartographic features
(such as land, rocks, buoys and depth contours) move on the Instrument chart window to where they should be.
The positions of the boat, waypoints,
tracks, and lines of latitude and longitude on the Instrument chart window remain unchanged.
Applying a map shift
1 Move the boat to a known point on the
chart, for example a marina berth.
2 In the Chart setup menu, select
Map shift.
3 Move the cursor to the position on the
chart where the boat actually is.
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8120 Installation and Operation Manual60
General submenu
Plotter mode Only scales available on the chart card can be displayed.
If you press
or to select a chart scale which is not available, on the chart card, the chart win­dow will change to this scale but will only display the boat position and track (if enabled). The rest of the window is white with black crosshatch lines and no chart information is displayed. This is useful to zoom to a small scale to track small boat movements or if there is no detailed chart for an area.
Mixing levels Mixes lower detail charts with higher detail charts on chart boundaries.
:Lower detail chart is not shown.
:Lower detail chart shown; this is slower to redraw.
Anticlutter Names and icons shown. Note: this is independent of the change in detail shown at different
zoom levels.
Hides some less important names and icons when they overlap to make the chart clearer.
Value added data Non marine chart data shown
Projected course The Instrument can estimate the course after a given time, based on the current speed and heading
(see section 3-4). The options are 2 minutes, 10 minutes, 30 minutes, 1 hour, 2 hours or Off.
CDI scale See Appendix C. The options are 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 4.0 and 10.0 distance units.
Lat/lon grid displays a latitude and longitude grid.
Boundaries Displays boundaries around areas where more detailed chart coverage is available: Auto shows the
next four detail levels; On shows all.
Text/icon size Select the size of chart text and icons.
Water submenu
Water features displays nature of seabed (for example, M shows areas of mud)
and tide station icons.
Bathymetric[s] lines Displays underwater depth contours between Bath & dndgs min
and max.
Spot soundings Displays underwater depth contours between Bath & dndgs min
and max.
Bath & sndgs min The minimum depth for Bathymetrics and Spot soundings.
Bath & sndgs max The maximum depth for Bathymetrics and Spot soundings.
Tidal stream displays dynamic tide flows: arrows on a chart showing the present tide stream and orientation
(requires a GPS fix and an NT-MAX card)
Land submenu
Land features displays land features, for example regions, rivers, roads, railways, airports.
Land elevation displays land contours, shaded like depths (requires an NT Max card)
Other submenu
Waypoints Displays waypoints: Hide all only displays waypoints on any selected route; Selected displays
waypoints with their display option set to Icon or I+N (Icon and Name); Show all displays all waypoints (see section 5).
Names displays place names.
Lights Light House window options: Off hides all light indicators (the icon still shows); No sectors
hides sectors; On shows sectors; Animated activates light animation. Note: with light animation enabled sectors are not visible, animation only operates in single chart view or in the top chart of chart + chart
Nav-aids Displays signals (fog, radar, radio stations) and bouys. Int and US select the icon format; Simpl
draws simpler icons.
Attention areas displays attention area boundaries and information icons ; attention areas are important areas,
such as restricted anchorages or shallow areas.
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8120 Installation and Operation Manual61
Press
SETUP
then select Sonar:
Frequency
There is a choice of: 200 kHz, 50 kHz and Mixed. For information about selecting a
suitable frequency for the water conditions, see section 8-3.
Scroll speed
Use this to set the scroll speed on the display. There is a choice of: Very Fast, Fast, Medium, Slow and Pause. The depth of the water also affects the speed of the display.
Faster scroll speeds combined with a slow boat speed (typically between 2 and 6 knots) shows the most fish detail. Medium or Slow scroll speeds result in sonar information being displayed over a longer period, but with less detail (see Section 8-2).
Fish symbols
The Instrument always displays echoes from fish (fish arches, see section 8-4). If fish symbols are on, a symbol is displayed over the arch (see section 8-4). The options are:
• Off: No fish symbol is displayed.
• Fun or Normal: A fish symbol is displayed.
Fish depth labels
When this is turned on, the depth of a fish is printed next to the fish arch.
Fish filter
Use this to select the minimum fish size that will be displayed as a fish symbol and to trigger the Fish alarm. The options are: Small, Medium and Large.
17-3 Setup > Sonar
Fish sensitivity
Selects the minimum strength fish echo that will be displayed as a fish symbol. Higher values will display more fish symbols.
Digit size
Use this to remove or change the size of the depth window on the sonar windows. There is a choice of: Small, Medium and Large.
Palette
Use this to select a colour palette. Each colour within the palette represents a different echo strength, as shown on the sonar windows.
There is a choice of five colour palettes:
Black, Blue, White, Vivid and 8 colour. The first four pallettes display more
detail, and each colour covers a 1.5 dB signal range. The 8 colour palette displays less detail, and each colour covers a 3 dB signal range.
Interference filter
No filter, normal setting.
Filters the echo signal to remove spiky
interference such as engine noise or depth sounders on nearby boats.
Noise filter
Averages the echo signal to remove rapid changes. Select Meduim or High to give a smoother bottom trace–this may help to detect a deeper bottom; however these settings may also remove fish echoes. Select Off for best fishfinding.
Surface clutter filter
Use this filter to hide the surface noise. Any significant echoes (such as fish) will still be displayed.
Pulse length
This can be used to specify the length of the transmitted ultrasonic pulse. A short pulse length improves the window detail but contains less energy, therefore it does not penetrate as deeply into the water as a longer pulse.
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17-4 Setup > GPS
Press
MENU
once or more until the Setup
menu is displayed, then select GPS:
GPS Source
• NMEA: Use the external GPS antenna supplied or an external GPS or DGPS source connected via NMEA (see section 18-12).
• NavBus: Use an external GPS or DGPS source connected via NavBus (see section 18-11).
DGPS Source
Refer to section 18-5
Restart GPS
Refer to section 18-5
Static Navigation
When the boat stops or moves very slowly, the calculated GPS speed and course become
erratic. Static navigation allows the erratic values to be filtered:
• 0.01 to 99.9: If the boat speed is slower than this, the speed is displayed as zero and the course stays unchanged.
• 0 (Off): The calculated speed and course are always used.
Speed and Course Filter
Waves and wind cause the boat speed and course to fluctuate slightly. To give stable readings, the Instrument calculates these values by taking several measurements and averaging them.
A lower value averages measurements
over a shorter period of time. This gives the most accurate value but has the most fluctuations.
A higher value averages measurements
over a longer period of time. This gives the most stable value but will ignore some sudden speed changes.
Set the Speed and Course filters to the lowest values which give stable readings. The range of each filter is 1 to 60 seconds or Off (0).
17-5 Setup > Fuel
Fuel setup requires optional petrol/ gasoline, diesel or SmartCraft sensors to be installed. Set Num engines first to enable the fuel functions.
Press
SETUP
then select Fuel:
Tank full
Tells the Instrument you have filled a fuel tank (see section 12-1).
Set remaining
Tells the Instrument you have added or removed fuel (see section 12-1).
There is a choice of Auto, Short, Medium or Long. The Auto setting is recommended.
Pulse power
This can be used to specify the power output of the transmitted ultrasonic pulse. Low
power output conserves the battery and produces a clear display in shallow water.
There is a choice of Auto, Low, Medium or High. The Auto setting is recommended.
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Clear Used
Select Clear used to set Used (the amount of fuel used) to zero. Do this to start measuring how much fuel is used during a trip (see section 12-2 Used)
Tank size
Enter the capacity of the fuel tank. Navman recommends measuring tank size by draining the fuel tank, filling it to capacity and using the fuel dispenser’s reading. Beware of air pockets, especially in underfloor tanks.
Num engines
Set the number of engines to 0, 1 or 2. If 0 is selected the fuel features are turned off.
Calibrate
SmartCraft fuel sensors and Navman diesel sensors are factory calibrated and should never need recalibrating. Calibrating Navman petrol/gasoline sensors gives more accurate fuel values.
Twin engine installations require each fuel transducer to be calibrated. This can be done at the same time with two portable tanks or at different times using one portable tank.
Calibrating the fuel transducer(s) requires accurate measurement of the fuel consumption. This is best done using a small portable tank. At least 4 gallons (15 litres) of fuel should be used to ensure an accurate calibration.
It is often very difficult to fill underfloor tanks to the same level twice due to air pockets, so the more fuel used, the more accurate the calibration.
To calibrate the fuel transducer(s), perform the following steps:
1. Record the level of the fuel in the tank(s).
2. Connect the portable tank(s) to the engine through the fuel transducer(s).
3. Run the engine at normal cruising speed until at least 4 gallons (15 litres) of fuel has been used per engine.
4. Check the actual amount of fuel used per engine by refilling the portable tank(s) to
the original level and noting the reading(s) from the fuel dispenser’s gauge.
5. Select Fuel. Use the cursor keys to change the reading for each engine to match that on the fuel dispenser’s gauge.
6. Press
ENTER
when the reading is correct.
Note: If the fuel calibration options appear to give erroneous readings after a while, first check that the fuel sensor has been installed correctly according to the installation instructions supplied with it, then see Appendix B - Troubleshooting.
Flow filter
Most engines do not draw fuel from the tank at a steady rate. To give a stable fuel flow reading, the Instrument calculates the flow value(s) by taking several measurements and averaging them. Use the Flow filter to set the period over which the fuel flow is averaged.
The Flow filter can be set from 0 to 30 seconds. Use the lowest value which gives a stable flow. Usually a value of 5 to 10 seconds will give a satisfactory result for two-stroke carburettor engines. Fuel injected or four­stroke engines may require a larger value.
This setting affects the Fuel flow and Fuel economy reading on the Fuel window but it does not affect the Fuel used reading.
Fuel consumption curve
See section 12-3.
Diesel sensors
If the boat has twin diesel engines and Navman diesel sensors, set up the diesel sensors:
1 In the fuel setup menu, select Diesel
sensors.
2 The window
shows fuel flow and RPM for the two engines. Identify which line has data for the port engine; for
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8120 Installation and Operation Manual64
example vary the speed of one engine or have one engine running and the other stopped.
3 Press or
to select the line with data
for the port engine. Press
ENTER
. Press
to
select Port and press
ENTER
.
4 Repeat steps 2 and 3 for the starboard
engine.
5 Press
ESC
when done.
Speed source
If both paddlewheel sensor and GPS speeds are available, select the source of speed readings for fuel calculations. If there is a current or tide, these speeds and the fuel calculation results will be different.
17-6 Setup > Track
Press
SETUP
then select Track:
Tracking records and displays the boat’s course on the chart (see section 3-5). Five different tracks can be recorded: track 1 has up to 2000 points and tracks 2, 3, 4 and 5 have up to 500 points each.
Record
Off: The Instrument stops recording a
track.
1 to 5 (select a track number): The
Instrument starts recording the boat’s course into the selected track.
Display
Off: No track is shown on the chart.
1 to 5 (select a track number): The
selected track is shown on the chart.
Plotting Interval
Select the plotting and recording interval. The options are Distance or Time.
Distance
Select the distance plotting interval: 0.01,
0.05, 0.1, 0.5, 1.0, 2.0, 5.0 or 10.0 distance units.
Time
Select the time plotting interval: 1, 5, 10 or 30 seconds or 1 minute.
Memory used
The percentage of memory used in the track being recorded.
Tip: Use the user card window to check the number of points recorded in each track (see section 14).
Send track
This option is included for compatibility with older units. For information, see your NAVMAN dealer.
Delete track
The data in the track selected for Record (see above) is deleted.
Water speed: Use paddlewheel sensor
speed (boat speed through the water). This gives a more accurate value for Economy.
GPS: Use GPS speed (boat speed relative
to land). This gives a more accurate value for Range.
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8120 Installation and Operation Manual65
Press
SETUP
then select Alarms:
17-7 Setup > Logs
Press
SETUP
then select Logs:
The values can be reset independently of each other. These log values are saved when the unit is turned off.
Reset trip dist
This resets the trip distance to zero.
Reset total dist
This option resets the total distance to zero.
Reset engine hours
Use this option to reset the engine hours to zero. This can be useful after an engine service or to count the engine hours between service intervals.
17-8 Setup > Alarms
For the XTE, Fish and Loss of DGPS fix alarms, select to turn the alarm on or
select to turn the alarm off. For the other alarms, enter a trigger value to turn the alarm on. The alarm will sound each time the alarm value passes the trigger value. For example, the Danger alarm will sound if the boat comes closer to a danger waypoint than the trigger value and the Anchor alarm will sound if the boat moves by more than the trigger value. To turn these alarms off, enter a trigger value of 0 (zero).
You can display the alarm status in the data header (see section 2-7-3). The alarm status shows the symbol for each alarm that is on. The symbol is normally black and turns red if the alarm triggers.
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Press
SETUP
then select Units:
The default units are shown above.
Distance
nm (nautical miles), mi (miles) or km (kilometres)
Symbol Alarm Beeper Alarm sounds when it is on and the:
Arrival boat is closer to the destination or to a waypoint radius than the alarm trigger value
Anchor alarm boat moves by more than the alarm trigger value
XTE boat moves off course by more than the CDI scale (see section 14-2)
Danger boat comes closer to a danger waypoint than the alarm trigger value
Too shallow
1
/5 sec depth is less than the alarm trigger value
Too deep
1
/2 sec depth is greater than the alarm trigger value
Fish 1 short echo matches the profile of a fish beep
Temperature
1
/2 sec temperature equals the alarm trigger value
Temperature 1/2 sec rate of change of temperature equals the alarm rate trigger value
Low
1
/2 sec battery voltage is less than the alarm trigger value
battery
Low fuel
1
/2 sec fuel remaining equals the alarm trigger value
Loss of Instrument can not receive the DGPS signal DGPS fix (beacon, WAAS or EGNOS)
Loss of Instrument can not receive the GPS signal GPS fix (this alarm is always on)
17-9 Setup > Units
Speed
kn (knots), mph (miles per hour) or kph
(kilometres per hour)
Depth
ft (feet), m (metres) or fa (fathoms)
Height
ft (feet) or m (metres)
Fuel
Litres, USGal (US gallons) or ImpGal (Imperial Gallons)
Compass
°T (True north) or °M (Magnetic north)
Temperature
°F (Fahrenheit) or °C (Celsius)
Wind (optional)
Requires a wind instrument: True or App (Apparent)
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Use this feature when the Instrument is connected to other NAVMAN instruments through NavBus or any compatible NMEA instrument.
Press
MENU
once or more until the Setup
menu is displayed, then select Com ms:
NMEA out
NMEA is generally used with third party instruments (see section 18-12). Select this to transmit NMEA sentences, for example to an autopilot.
NMEA data
Use this to specify which NMEA sentences will be transmitted (see section 18-12 and Appendix A).
Note: that the units for wind speed are the speed units.
Pressure
Requires SmartCraft: kPa or psi
Baro (Barometric pressure)
Requires a Navman VHF receiver with barometer connected by NavBus: InHg or mB.
17-10 Setup > Comms
Lat/lon dps
Select the number of decimal points used for latitude and longitude transmitted in NMEA sentences.
NavBus
NavBus is the preferred method for connecting the Instrument to other NAVMAN instruments. Select this if the instruments are connected using NavBus.
NavBus Group
Use this when a group of NAVMAN instruments are connected together using NavBus, to specify a group of instruments for backlighting, if required. Then, if the backlight setting on one instrument in the group is adjusted, the other instruments change automatically. Otherwise, select 0. See section 18-11.
17-11 Setup > Calibrate
Press
MENU
once or more until the Setup
menu is displayed, then select Calibrate:
Speed
This calibrates the speed from a paddlewheel sensor connected to the Instrument. Calibration may be required because different hull shapes have different flow characteristics. Obtain an accurate measurement of the boat’s speed from a GPS receiver; or by following another boat travelling at a known speed; or by making a timed run over a known distance.
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Note: for accurate calibration:
• The speed from a GPS receiver should be greater than 5 knots.
• The speed from another paddlewheel transducer should be between 5 and 20 knots.
• Best results are achieved in calm conditions where there is minimal current (best at high or low tide).
Calibrating speed:
1 Travel at a constant, known speed.
2 In the Calibrate menu, select Speed.
3 Press
or
to change the displayed
speed to the true value.
4 Press
ENTER
.
Speed filter
Waves and wind cause the boat speed from the paddlewheel transducer to fluctuate slightly. To give stable readings, the Instrument calculates these values by taking several measurements and averaging them. Set the Speed filter to the lowest value which gives stable readings. The range is 1 to 30 seconds or Off (0).
Temperature
The factory settings should be sufficiently accurate for normal usage. To calibrate the temperature readout, first measure the water temperature with a thermometer known to be accurate.
Use the cursor keys to display the temperature readout box, then increase or decrease the value to match the measured temperature. The temperature can be set from 32° to 99.9°F (0° to 37.7°C) with a resolution of 0.1° unit.
To change the units between °F (Fahrenheit) or °C (Celsius), see section 17-9.
Temperature filter
Water turbulence and currents cause the water temperature to fluctuate slightly. To give stable readings, the Instrument calculates these values by taking several measurements and averaging them. Set the Temperature filter to the lowest value which
gives stable readings. The range is 1 to 30 seconds or Off (0).
Fuel
See section 17-5, Calibrate.
Keel Offset
A depth transducer measures depths below where the transducer is mounted on the boat, usually the bottom of the boat. The Instrument calculates the depths to display by adding the keel offset to all measured depths.
A Have a zero keel offset to display depths
below the transducer.
B Enter a positive keel offset to increase the
displayed depth. For example to display the total depths below the surface, enter the depth of the transducer below the surface.
C Enter a negative keel offset to decrease the
displayed depth. For example, to display the depths of clear water below the boat, enter minus the depth of the deepest part of the boat below the transducer.
Transducer;
depths measured below here
A
B
C
Depths measured below here
Depths measured below here
Speed range
The maximum reading to display on an analog boat speed gauge (see section 10). Choose a range suitable for your boat.
Max fuel flow
The maximum fuel flow from the fuel tank.
Max RPM
The maximum engine RPM. Enter a value you have attained rather than the manufacturer’s value.
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Simulate mode is a way of becoming familiar with the Instrument (see section 2-6).
Press
MENU
once or more until the Setup
menu is displayed, then select Simulate:
Simulate
Turn simulate mode off
Turn simulate mode on
Press
MENU
once or more until the Setup
menu is displayed, then select Time:
Local offset
The difference between local time and UTC (GMT). Change local offset when daylight saving time starts and ends. The range is 0 to ± 13 hours, in 30 minute steps.
17-12 Setup > Time
1 Select Local offset.
2 Press or
to change the offset, then
press
ENTER
.
Time format
The options are 24 hour or 12 hour.
Date format
The options are dd/MMM/yy, MMM/dd/yy, dd/MM/yy or MM/dd/yy.
17-13 Setup > Favourites
See section 2-7-2.
17-14 Setup > Simulate
The options required for Normal are:
Speed: The simulated boat speed to use.
Course: The simulated course over
ground.
Note: To select the start point, go to the chart window before starting the simulation. Then:
• To start the simulation from the boat position, press
ESC
to switch to centre on
boat mode.
• To start the simulation from a different point, move the cursor to that point on the chart.
Tip: To calculate a course, use the cursor
(see section 3-3).
Tip: As the boat moves, vary Course to
simulate the boat moving off course.
2 Demo
Simulates a boat moving along a route and automatically displays different Instrument functions. The options required for Demo are:
Speed: The simulated boat speed to use.
Route: The route to follow.
CAUTION
!
!
WARNING
Never have simulate mode on when the Instrument is navigating on the water.
Mode
There are two choices for Mode:
1 Normal
Simulates the boat moving from the selected start point at the given speed and heading.
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18 Installation
CAUTION
!
!
WARNING
Ensure that any holes cut are in a safe position and will not weaken the boat’s structure. If in doubt, consult a qualified boat builder.
CAUTION
!
!
CAUTION
DANGER
WARNING
Do not mount any part where it can be used as a hand hold, where it might be submerged or where it will interfere with the operation, launching or retrieving of the boat.
To help ensure proper operation, do not mount any part or cable within 0.5 m (20”) of the plane of a radar antenna or within 1 m (3 ft) of a compass or source of electrical noise, such as engines, fluorescent lights, and power inverters.
When fitting a cable, do not crush or strain the cable. Secure the cable at regular intervals. Ensure no connectors or exposed terminals are in wet area.
If the cables supplied are too long, do not shorten the cable; instead coil the cable. Most cables can be extended with Navman extension cables. Do not fit more than one extension cable.
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18-1 Installation: What else comes with my 8120?
Navman GPS 1240 Antenna
GPS 1240 Antenna bottom cone
GPS 1240 Antenna gasket
GPS 1240 mounting kit
Sun cover for display unit Note: Place over display when not in use
Front Bezel Note: Fit this after installing the display unit
Power cable
Mounting bracket and locking knobs
Bracket mounting screws (5 x14 Gauge self tapping screws)
Flush mounting screws (4 x 8 Gauge self tapping screws)
Navman wallet
Contains the following items:
• Flush mounting template

• LCD cleaning cloth
• Warranty card
• Quick start guide
• CD manual
• 8120 Installation and operation manual
• GPS 1240 Antenna Installation and operation manual
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8120 Installation and Operation Manual72
Optional sensors and instruments
External alarms: Lights or sounders in the boat to sound alarms through the boat (see section 18-4).
GPS or DGPS antenna: For GPS navigation, see section 18-5.
Sonar transducer: For depth sounding and fish finding, see section 18-6.
Fuel sensors: For fuel functions. The Instrument can use these optional fuel flow sensors, fitted to one or two engines:
• Navman petrol/gasoline sensors (see section 18-7)
• Navman diesel sensors (see section 18-8)
• SmartCraft fuel sensors (see section 18-10)
DSC VHF radio: Tracks other boats with GPS receivers and DSC radios and displays barometric pressure (see section 18-9).
SmartCraft: With one or two SmartCraft capable Mercury petrol/gasoline engines, the Instrument can display engine data and trim and can control troll speed (see section 18-10).
Other instruments: The Instrument can receive data from other instruments and send data to other instruments by NavBus or NMEA (see sections 18-11 and 18-12).
Please consult your NAVMAN dealer for more information.
• Replacement paddle wheel.
• C-MAP™ NT-MAX, NT+ or NT chart SD cards.
• NAVMAN NavBus junction boxes simplify wiring, particularly if several instruments are connected. For more information, see the NavBus Installation Manual.
18-2 Installation: Options and Accessories
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Connections
18-3 Installation: The display unit
Start by selecting a suitable mounting position for the 8120 display unit:
• Consider the best possible position for viewing and operating the 8120. This will generally be a relatively shaded area free
from obstructions.
• At least 4” (100 mm) away from the compass, at least 12” (300 mm) away from any radio transmitter and at least 4 ft (1.2 m) away from any antenna.
• For optimum performance and reliability consider mounting the unit where it will not be unnecessarily exposed to direct sunlight, water and protected from other physical damage which could occur during rough sea passages.
• If bracket mounting chose a flat area where the display will not be subjected excessive vibration.
• Select an area with adequate clearance for cabling and access to the power source.
• Before drilling any holes ensure that the drill area is free from cables or other obstructions.
Sonar Sonar TransducerVideo in Video Input (Analogue composite [NTSC-
PAL])
Comms Not UsedGPS NAVMAN 1240 GPS AntennaFuel/Nav - NAVMAN Fuel TXD
- Diesel Fuel TXD
- Smartcraft Gateway
Not UsedPower/data cable
Wire Function
Black Ground: power negative, NMEA ground (Connect both black wires to ground) Brown Not Used White NMEA out Blue NavBus­ Red Positive power in, 10 to 35 V DC Orange NavBus+ Yellow Auto power - Connect to red wire (positive power in) to enable Auto power No Auto power - Leave disconnected or ground Green External Alarm output or light out, switches to ground during alarm condition, 200 mA maximum.
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8120 Installation and Operation Manual74
There are two mounting arrangements:
Flush Mounting the 8120
1. Attach the flush mounting template to the selected mounting position using adhesive tape.
2. Drill a pilot hole for each of the hole saw cuts shown on the template before cutting the larger hole with the hole saw.
3. Next cut all the way around the inside of the cut-out line with a saw to remove the waste material shown on the template.
4. Check that the unit fits correctly in the cut out area. Adjust the fit with a file if required.
5. Select a 2-3.5 mm 1/8” drill bit depending on hardness of material to drill. Smaller diameter holes will be needed for soft woods and larger diameter pilot holes will be required if mounting to hard materials such as fiberglass (we recommend 3.5mm (1/8”) for fiberglass and Aluminum).
With the selected drill bit drill the 4 pilot
holes for the 8 gauge screws used to attach the unit. These are indicated on the corners of the mounting template.
6. Connect all cables to the rear of the unit before placing the unit into the console.
7. Firmly secure the unit in place with the 4 x 8 gauge self tapping screws.
Note: the 5 x 14G self tapping screws are for
bracket mounting only.
8. To finish off the installation firmly clip the front bezel in place.
Bracket Mounting the 8120
An alternative to flush mounting the 8120 is to bracket mount the unit. This method has the advantage that the display can be easily removed when it is not in use. The display may be tilted for best possible viewing angle when bracket mounted.
Note: The mounting bracket does not allow for rotation of the unit to the left and right.
1. Use the mounting bracket as a template to mark the 5 positions of the screw holes.
2. Select a suitable drill bit (note: larger diameter pilot holes may be required if mounting to fiberglass) and drill 5 pilot holes in the marked positions.
3. Secure the mounting bracket using the 5 x 14G self tapping screws.
4. Slide the 8120 into the mounting bracket and secure in place with the bracket knobs.
5. To finish off the installation firmly clip the front bezel in place.
Mounting bracket
Knob
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8120 Installation and Operation Manual75
Black
Auto power
When wired for Auto Power On the unit will turn on when the ignition switch is on, if you would like the unit to turn off when the ignition switch is off then set the unit for Auto Power Off (see section 2-2 and 17-1)
2 Wire any external alarm beepers or lights. The alarm output switches to ground to
sound the alarm. If the current is more than 200 mA, fit a relay.
3 Connect the power/data cable to the black display unit connector; turn the collar to
lock the connector.
Power/data cable
Yellow
Red
Black
Ignition
Ignition switch
Main switch
12/24 V DC
Fuses 2A
Power/data cable
Red
Yellow
Black
18-4 Installation: Power/data cable
Main switch
12/24 V DC
Fuse 2A
The power/data cable has a black locking collar and flying leads.
1 Wire the Instrument for auto power to have the Instrument turn on with the boat’s ignition
switch or to record engine hours or if the Instrument must add up the total fuel used (for example if Navman petrol/gasoline fuel sensors are installed or if SmartCraft is installed without fuel tank level sensors). Otherwise wire for basic power (for more information, see section 2-2).
Basic power
Black
Black
External beepers or
lights
Power/data cable
Red
Green
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Restart GPS:
Restarts the GPS receiver, satellite reception will be lost until the receiver completes its restart and acquires the satellites. Select restart GPS and press
ENTER
18-5 Installation: GPS antenna
Selecting an antenna
Fit one of these GPS antennas:
• Normally use the GPS antenna supplied.
• An optional differential beacon DGPS antenna to give enhanced accuracy within range of land based differential beacons in areas where WAAS or EGNOS are not available. Such a DGPS antenna has both a GPS receiver and a beacon receiver, and it automatically applies the beacon correction to the GPS position.
• A compatible GPS or DGPS instrument or antenna connected by NavBus (see section 18-11) or NMEA (see section 18-12). In this case, the Instrument does not need its own antenna.
Note:
• To configure the Instrument for different antenna options, see section 17-4.
For more information, contact your NAVMAN dealer.
DGPS Source:
Enables or disablesthe satellite based DGPS correction (see section 7). The options are None or WAAS/EGNOS. Do not Enable WAAS/EGNOS outside their coverage areas or the accuracy of the position might be degraded.
WAAS covers all of the USA and most of Canada. To use WAAS, the GPS antenna must have a clear view of the sky towards the equator. EGNOS will cover most of Western Europe.
18-6 Installation: Sonar transducer
CAUTION
!
!
WARNING
Do not install plastic through hull transducers in solid wooden hulls. Leakage through the hull may result.
Do not install bronze transducers in metal hulls. This will cause electrolytic corrosion that may result in damage to the hull or transducer.’
Installing an antenna
If an external antenna is required, install the antenna and fit the antenna cable back to the display unit. Follow the instructions in the manual supplied with the antenna. Fit an optional Navman extension cable if required.
During setup, configure the Instrument for the chosen antenna, see section 17-4.
CAUTION
!
!
WARNING
MOB will not work if the Instrument does not have a GPS fix.
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8120 Installation and Operation Manual77
Connect the transducer to the blue Instrument connector; tighten the locking collar.
During setup
a) set Sonar to (see section 17-1)
b) set up the sonar options (see section 17-3)
Sonar cable
18-7 Installation: Navman petrol/gasoline sensors
Fit the optional petrol/gasoline fuel kit following the instructions supplied with the kit.
Note:
SmartCraft engines have fuel flow sensors,
therefore Navman fuel sensors are not required as well.
For dual engines, fit two kits.
Wire the Instrument for auto power (see
section 18-4).
During setup:
a) set the fuel data (see section 17-5)
18-8 Installation: Navman diesel sensors
Fit the optional diesel fuel kit following the instructions supplied with the kit. Note:
SmartCraft engines have fuel flow sensors,
therefore Navman diesel sensors are not required as well.
For dual engines, fit two kits. Wire the two
diesel flow sensor cables in parallel.
Normally, power the diesel sensors
from the boat ignition switch. Then the Instrument does not need to be wired for auto power (see section 18-4).
During setup:
a) set NavBus to (see section 17-10)
b) set the fuel data (see section 17-5)
Blue
Fuel sensor cable
Diesel sensor cable
White
White
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18-9 Installation: DSC VHF radio
Fit and set up the optional Navman DSC VHF radio following the instructions supplied with the radio.
During setup:
a) on the radio, enter buddy boats required
b) on the Instrument, set NavBus to (see
section 17-10)
Power/data cable
Orange
Blue
Radio power/data cable
18-10 Installation: SmartCraft
If the boat has one or two SmartCraft capable Mercury petrol/gasoline engines, connect the Instrument to the SmartCraft engines with an optional SmartCraft gateway. The display unit can display engine data and trim and can control troll speed.
Note:
Fit a single gateway for single engines and
a dual gateway for dual engines.
SmartCraft engines have fuel flow sensors,
therefore Navman fuel sensors are not required as well.
An optional GPS/fuel Y cable is required.
If the fuel tank does not have SmartCraft
level sensors, wire for auto power (see section 18-4).
During setup, set Y cable to (see section 17-1) and enter the SmartCraft setup data. For information on installing, setting up and using SmartCraft, see the SmartCraft Gateways Installation and Operation Manual.
Black
Smartcraft Gateway
White
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NavBus is Navman’s system for connecting instruments together to interchage data and share transducers. When instruments are connected by NavBus:
If the units, alarms or calibration are
changed in one instrument, then the values will automatically change in all other instruments of the same type.
Each instrument can be assigned to a
group of instruments. If the backlight is changed in an instrument in group 1, 2, 3 or 4 then the backlight will automatically change in the other instruments in the same group.
If the backlight is changed in an
instrument in group 0 then no other instruments are affected.
If an alarm sounds, mute it by clearing the
alarm on any instrument which can display that alarm.
NavBus and the Instrument
The Instrument can:
Display wind speed and direction from an
optional Navman Wind instrument
Receive and display depth from an
optional Navman depth instrument.
Receive and display boat speed and water
temperature from a paddlewheel sensor on an optional Speed instrument.
18-11 Installation: Other NavBus instruments
Receive barometric pressure from
an optional Navman VHF radio. The Instrument can display:
Baro: barometric pressure
Baro history: barometer history
Weather: a predication, based on changes
in barometric pressure
Fish forecaster: a prediction based on
changes in barometric pressure
Receive data from an optional GPS or
GPS/DGPS source.
Send data to optional NAVMAN
instruments, for example to a repeater.
During setup for NavBus instruments, set
NavBus to and assign the instrument a NavBus group number (see section 17-10)
Black
Power/data cable
Orange
Blue
NavBus wires to other
Navbus instruments
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8120 Installation and Operation Manual80
18-12 Installation: Other NMEA instruments
NMEA is an industry standard for interconnecting instruments. It is not as flexible or as easy to install as NavBus. The Instrument can:
Receive and display wind speed and
direction from an optional compatible wind instrument.
Receive and display depth, paddlewheel
boat speed and water temperature from an optional compatible instrument.
Receive data from an optional compatible
GPS or GPS/DGPS source.
Send GPS position and other navigation
data to an autopilot or other instrument. An autopilot requires APB, APA and VTG sentences (see section 17-10).
For information on sending NMEA data to the Instrument, see your Navman dealer.
During setup to send NMEA data to other instruments, set NMEA out to and specify the NMEA data to send (see section 17-10).
Setup and test
1 Put a blanking cap on any unused
connector on the back of the display unit. Ensure all connectors are plugged in and the display unit is in place.
2 If the display unit is bracket mounted,
adjust tilt and rotation for best viewing and hand tighten the knob.
3 Insert any required C-MAP chart card (see
section 1-3).
4 Turn the instrument on (see section 2-2).
When the Instrument is turned on for the first time, it displays an installation menu:
i Select the language to use.
ii Change the data if necessary (see
section 2-1)
iii When the setup data is correct, press
ESC
.
This data can be changed later
(see section 17).
18-13 Installation: Setup and test
5 Enter setup data to set up the Instrument
to your requirements and to set up any optional sensors or instruments (see section 17).
6 At the satellite window, check that it picks
up GPS satellites. Wait for the GPS receiver to start up and the fix type to change from ‘Acquiring’ to ‘GPS fix’. This should take less than two minutes (see section 7).
7 Go on a test run to check that the
navigation equipment works correctly, particularly when a radio transmitter or radar is used.
White NMEA out
Black NMEA ground
Power/data cable
Black
White
White NMEA in (requires Special Fuel Cable)
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8120 Installation and Operation Manual81
Appendix A - Specifications
GENERAL Size: 256mm (10.08“) H x 385mm (15.16“) W x
78.5mm (3.09“) D. Allow 3mm clearance on each side for dust cover.
Display: 307mm (12.1”) diagonal, TFT colour,
800 x 600 pixels.
Backlight: Display and keys Supply voltage: 10.5 to 32 V DC. Supply current: at 13.8 V
350 mA min - no backlighting. 1A max - full backlighting. External beeper or light output: Switched
to ground to sound alarm, 30 V DC, 200 mA maximum.
Operating temperature: 0° to 50°C (32° to 122°F)
ALARMS:
User set: Arrival radius, anchor, XTE, danger,
too shallow, too deep, fish, temperature, temperature rate, low battery, low fuel (optional), loss of DGPS fix
GPS NAVIGATION Chart card: C-MAP™ SD Card (NT-MAX, NT+ or
NT)
User card: SD Card Waypoints: Up to 3000, with default or
user-defined alphanumeric names up to eight characters.
Routes: 25 Routes, with up to 50 points each Tracks: By time or distance, one track of 2000
points and four of 500 points.
Chart datums
121 Chart datums (see next page) One user-defined map shift.
Chart scale: 0.05 to 4096 nm for chart (chart
dependent) down to 0.01 nm in plotter mode.
SONAR FISHFINDING
(Optional sonar transducer required)
Depth range: 1m (3 ft) to 1000 m (3300 ft ) Sonar output:
Power: Variable, up to 600/1000 W RMS
Dual frequency: 50 khz and 200 kHz Depth acquisition time from startup: Typically 2 seconds at 30 m (100 ft)
Temperature:
Range 0° to 37.7°C (32° to 99.9°F)
Resolution of 0.1° unit. Speed (from paddlewheel transducer): 1 to 96.6 kph (57.5 mph, 50 kn).
FUEL COMPUTER
(Optional fuel sensor(s) required)
Engine types:
Outboard carburetted two stroke and EFI
petrol/gasoline engines: 50 to 300 hp.
Outboard four stroke petrol/gasoline
engines: 90 to 300 hp.
Inboard petrol/gasoline engines: 70 to 400
hp.
Flow rate:
Minimum: 5 litres per hour (1.3 U.S. gallons
per hour).
Maximum: 130 litres per hour (34 U.S. gallons
per hour).
COMMUNICATIONS NavBus
Connection to other NAVMAN instruments. NMEA: NMEA 0183 ver 2 4800 baud
Inputs from compatible instruments: BWR, DPT, GGA, GLL, GSA, GSV, HDG, HDM, HDT, MTW, MWV, RMC, VHW, VTG and DBT
Outputs, for compatible instruments:
APA, APB, BWR, DBT, DPT, GGA, GLL, GSA, GSV, RMB, RMC, MTW, VHW, VLW, VTG, XTE
STANDARDS COMPLIANCE EMC:
USA: FCC Part 15 Class B.
Europe: (CE) EN301843-1
New Zealand and Australia: (C Tick) IEC60945 Environment: IPx6/IPx7/CFR46 (with card
holder and connections in place)
Video
75Ω BNC Connector. Most PAL and NTSC
formats supported. (PAL BGHI, PAL N, Combination PAL N, PAL M, NTSC M, NTSC N, NTSC 4.43, NTSC-Japan and SECAM)
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8120 Installation and Operation Manual82
List of datums
Adindan Afgooye AIN EL ABD 1970 American Samoa 1962 Anna 1 Astro 1965 Antigua Island Astro 1943 ARC 1950 ARC 1960 Ascension Island 1958 Astro Beacon ‘E’ 1945 Astro DOS 71/4 Astro Station 1952 Astro Tern Island (Frig) 1961 Australian Geodetic 1966 Australian Geodetic 1984 Ayabelle Lighthouse Bellevue (IGN) Bermuda 1957 Bissau Bogota Observatory Bukit Rimpah Camp Area Astro Campo Inchauspe 1969 Canton Astro 1966 Cape Cape Canaveral Carthage Chatham Island Astro 1971 Chua Astro Co-ord. Sys.1937 Estonia Corrego Alegre Dabola Deception Island Djakarta (Batavia) DOS 1968 Easter Island 1967 European 1950 European 1979 Fort Thomas 1955 Gan 1970 Geodetic Datum 1949 Graciosa Base Sw 1948 Guam 1963 Gunung Segara GUX 1 Astro Herat North Hermannskogel Hjorsey 1955 Hong Kong 1963 Hu-Tzu-Shan Indian Indian 1954 Indian 1960 Indian 1975 Indonesian 1974 Ireland 1965 ISTS 061 Astro 1968 ISTS 073 Astro 1969 Johnston Island 1961 Kandawala Kerguelen Island 1949 Kertau 1948 Kusaie Astro 1951 L. C. 5 Astro 1961 Leigon Liberia 1964 Luzon M’Poraloko Mahe 1971 Massawa Merchich Midway Astro 1961 Minna Montserrat Island Astro 1958 Nahrwan Masirah Is. Oman Nahrwan United Arab Emirates Nahrwan Saudi Arabia Naparima, BWI North American 1927 North American 1983 North Sahara 1959 Observatorio Meteorolog. 1939 Old Egyptian 1907 Old Hawaiian Oman Ord. Survey Great Britain 1936 Pico de las Nieves Pitcairn Astro 1967 Point 58 Pointe Noire 1948 Porto Santo 1936 Provis. South American 1956 Provis. South Chilean 1963 Puerto Rico Pulkovo 1942 Qatar National Qornoq Reunion Rome 1940 S-42 (Pulkovo 1942) Santo (DOS) 1965 Sao Braz Sapper Hill 1943 Schwarzeck Selvagem Grande 1938 Sierra Leone 1960 S-JTSK South American 1969 South Asia Tananarive Observatory 1925 Timbalai 1948 Tokyo Tristan Astro 1968 Viti Levu 1916 Voirol 1874 Voirol 1960 Wake Island Astro 1952 Wake-Eniwetok 1960 WGS 84 Yacare Zanderij
385 mm (15.1 ") 78.5 mm(3.1 " )
11.4 mm (0.45 ")
256 mm (10.1 ")
304 mm (12.1 ")
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8120 Installation and Operation Manual83
1-1 The Instrument won’t turn on:
a The Instrument is designed to operate
on a 12/24 volt battery system, where the voltage may vary from 10.5 to 32 volts. If an excessive voltage is supplied, a fuse will be tripped, turning the display unit off. Check the fuse.
b Check that the power cable connector
at the back of the display unit is securely plugged in and the collar is locked in place. The collar must be secure for watertight connection.
c Measure the battery voltage while the
battery is under load - turn on some lights, radio or other electrical equipment connected to the battery. If the voltage is less than 12 volts:
- the battery terminals or wiring on the terminals may be corroded.
- the battery may not be charging correctly or may need replacing.
d Inspect the power cable from end to
end for damage such as cuts, breaks, squashed or trapped sections.
e Check power wiring (see section 18-4).
f Check for corrosion on the power cable
connector and clean or replace if required.
Appendix B - Troubleshooting
This troubleshooting guide is written with the assumption that the user has read and understood the relevant sections in this manual.
It is possible in many cases to solve difficulties without having to send the display unit back to the manufacturer for repair. Please follow this troubleshooting section before contacting the nearest NAVMAN dealer.
There are no user serviceable parts. Specialized methods and testing equipment are required to ensure that the display unit is reassembled correctly and is waterproof. Users who service the product themselves will void the warranty.
B-1 General problems
Repairs to the product may only be carried out by a service centre approved by NAVMAN. If the product must be sent into a service centre for repair, it is essential to send in the transducer(s) at the same time.
More information can be found on our Website: www.navman.com.
g Check fuses that are placed in line with the
power cable. A fuse can be blown despite appearing to be good or the fuse may be corroded. Test the fuse or replace it with a fuse known to be good.
1-2 The Instrument won’t turn off:
The Instrument may have been wired for
Auto power. In this case, the Instrument cannot be turned off while the ignition power is on (see section 2-2).
1-3 If the Instrument beeps when turned
on but nothing is displayed:
The Instrument may be operating, but the
backlight settings may have been set too low (see section 2-3).
1-4 The wrong language is displayed:
See section 17-1.
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8120 Installation and Operation Manual84
B-2 GPS navigation problems
2-1 No GPS fix or long time to get fix at
startup:
a May occur occasionally if the antenna
does not have a clear view of the sky. The satellite positions are constantly changing.
b Antenna cable not connected to display
unit.
2-2 Instrument GPS position different from
true position by more than 10 m (33 ft):
a Instrument in simulate mode. Turn
simulate mode off (see section 17-14).
b The normal error in GPS position will
exceed 10 m (33 ft) for about 5% of the time.
c Under special circumstances the US
Department of Defence may introduce a deliberate and changing error in the GPS positions of up to 300 m (1000 ft).
2-3 Instrument position different from
same position on local charts:
a Instrument in simulate mode. Turn
simulate mode off (see section 17-14).
b Incorrect chart datum. Select the correct
chart datum (see section 17-2).
c Map shift has been applied wrongly. Clear
map shift, then reapply if necessary (see section 17-2).
2-4 Can not see boat on chart:
Press
ESC
to switch to centre on boat
mode (see section 3-2-1).
2-5 The time or date on satellite display is
wrong or off:
a No GPS fix.
b In simulate mode. Turn simulate mode off
(see section 17-14).
c Local time offset is wrong (see section
17-12). The Local Time Offset must be changed when daylight saving time starts or ends.
2-6 Autopilot not responding to
Instrument; no NMEA output:
a NMEA output disabled or the required
NMEA sentences are not turned on. Check NMEA settings (see section 17-10).
b Check that the instrument is connected
correctly.
2-7 No DGPS fix or loss of DGPS fix:
a To receive a DGPS fix, WAAS/EGNOS must
be enabled or an optional DGPS antenna fitted (see section 7).
b With WAAS/EGNOS: Boat out of coverage
area (see section 7).
c With WAAS: GPS antenna does not have
a clear view of the horizon towards the equator.
b With beacon DGPS: boat out of range of a
DGPS beacon.
3-1 Fuel used or remaining seem
inaccurate:
a Instrument is not wired for auto power
(see section 18-4).
b In rough seas, fuel may surge back
and forth through the fuel transducer, resulting in incorrect readings. Try installing a one-way valve between the fuel transducer and the fuel tank.
B-3 Fuel consumption problems
c The Set remaining fuel value must
be reset after every refuelling (see section 12-1).
d The fuel tank may not refill to the same
capacity each time due to air pockets. This is particularly noticable with underfloor tanks.
e Fuel transducers wear out over time and
should be replaced after every 5000 litres of fuel.
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8120 Installation and Operation Manual85
3-2 Flow indicates no fuel or low fuel:
a Check that the number of engines is set to
1 (see section 17-5).
b Check that the fuel cable connectors
are securely plugged in and the collar is locked in place. The collar must be locked in place to give a watertight connection.
c A fuel transducer may be clogged. If so,
remove the transducer from the fuel line and gently blow through it in the opposite direction to the fuel flow.
A fuel filter between the fuel transducer
and the fuel tank must be installed as per the fuel installation guide. Failure to do so will void the warranty.
d Inspect the fuel cable from end to end for
damage such as cuts, breaks, trapped or squashed sections.
e Check that the fuel filter is clean.
3-3 A twin engine installation shows only
one flow rate:
a Check that the number of engines is set to
2 (see section 17-5).
3-4 Erratic Fuel Flow readings:
a The fuel flow transducer may have been
mounted too close to the fuel pump or may be subject to excessive vibration. Refer to the installation instructions supplied with the fuel transducer.
b Check for leaks in the fuel line or in the
fuel pickup in the tank.
c The Flow filter value is not suitable
for the engine. Check that the value is not set to zero, then try increasing the value until a steady flow rate is shown (see section 17-5).
3-5 There is no reading for fuel economy:
a The boat must be travelling through the
water to generate an Economy reading.
b Check that the paddlewheel on the
transducer is spinning freely and that the two magnets in the paddlewheel are still in place.
B-4 Sonar fishfinding problems
4-1 The Instrument operates erratically:
a Check that the transducer does not have
debris (e.g. weed, plastic bag) caught around it.
b The transducer may have been damaged
during launching, running aground or while underway with debris etc. If the transducer has been impacted, it may have been kicked up on the bracket. If it is not physically damaged, reset the transducer back to its original position. (See the Transom Transducer Installation Guide.)
c When the transducer is less that 2 ft
(0.6 m) from the bottom, the depth readings may become inconsistent and erratic.
d Manual Gain may be set too low, which may
cause weak bottom echo or no fish signals. If in Manual Gain, try increasing the Gain.
e Ensure the back of the bottom surface
of the transducer is slightly lower than the front and the front is as deep in the water as possible in order to minimize the generation of bubbles through cavitation. (See the Transom Transducers Installation Guide)
f Check the transducer and power cable
connectors at the back of the display unit are securely plugged in and the collars are locked in place. The collars must be secure for watertight connection.
g Inspect the power cable from end to end
for damage such as cuts, breaks, squashed or trapped sections.
h Ensure there is not another fishfinder or
depth sounder turned on, which may interfere with this Instrument.
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8120 Installation and Operation Manual86
i Electrical noise from the boat’s engine or
an accessory may be interfering with the transducer(s) and/or the Instrument. This may cause the Instrument to automatically decrease the Gain unless using Manual Gain.
The Instrument thus eliminates weaker
signals such as fish or even the bottom from the display. This may be checked by switching off other instruments, accessories (e.g. bilge pump) and the motor until the offending device is located. To stop problems from electrical noise, try:
- re-routing the power and transducer cable(s) away from the boat’s other electrical wiring.
- routing the display unit’s power cable directly to the battery with an in-line fuse.
4-2 Bottom is not displayed:
a The Instrument may have Manual Range
selected and the depth may be outside the range value selected. Either change the Instrument to Auto Range or select another depth range (see section 8-5).
b The depth may be outside the Instrument’s
range. While in Auto Range, the display unit will display “--.-” to indicate that there is no bottom detected. A display of the bottom should reappear when in shallower water.
4-3 The bottom is displayed too far up
the screen:
The Instrument may have Manual Range
selected and the selected Range value is too high for the depth. Either change the Instrument to Auto Range or select another depth range (see section 8-5)
4-4 Bottom echo disappears or erratic
digital reading while the boat is moving:
a Ensure the back of the bottom surface
of the transducer is slightly lower than the front and the front is as deep in the water as possible in order to minimise the generation of bubbles through cavitation. (See the Transom Transducers Installation Guide, for more information.)
b The transducer may be in turbulent
water. Air bubbles in the water disrupt the echoes returned, interfering with the Instrument’s ability to find the bottom or other targets. This often happens when the boat is reversed. The transducer must be mounted in a smooth flow of water in order for the Instrument to work at all boat speeds.
c Electrical noise from the boat’s motor can
interfere with the Instrument. Try some suppression spark plugs.
4-5 There is a double bottom trace
displayed:
a The boat may be in an area that generates
shadows (see section 8-2).
b In shallow water, the echoes may bounce.
Reduce the gain setting (see section 8-6) and/or reduce the sonar pulse power (see section 17-3).
c Decrease the Range.
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8120 Installation and Operation Manual87
Appendix C Glossary and navigation data
Air temp - Air temperature (requires Navman 7200 VHF radio).
Alarm status - Shows the symbol (see section 17-8) for each alarm that is on. The symbol is normally black and turns red if the alarm triggers.
Attention Area - An important area on a chart, such as a restricted anchorage or a shallow area (see section 17-2).
Bathymetric line - A depth contour line on the chart.
Chart card - A plug-in card that stores chart data for a region (see section 1-3).
C-MAP™ chart card - See Chart card.
C-MAP™ user card - See User card.
Cursor - A symbol on the display (see
section 3-2).
DGPS - Differential Global Positioning System. A navigation tool based on GPS with some errors corrected (see section 7).
DTN - Distance to the next position the 8120 is navigating to, either a waypoint or the cursor.
Fish forecaster - An estimate of the likelihood of catching fish based on barometric pressure. The more fishes that show the higher the likelihood (requires Navman 7200 VHF radio).
Gear - The gear the engine is in (requires SmartCraft).
Goto - A simple way of navigating straight to a waypoint or to the cursor position (see section 3-1).
GPS - Global Positioning System. A satellite­based navigation tool (see section 7).
Leg - The straight segments of a route between waypoints. A route with four waypoints has three legs.
MOB - Man overboard.
MOB function - Starts navigating back to
the place where someone fell overboard (see section 2-4).
NavBus - A way of connecting NAVMAN instruments together to share data (see section 18-11).
NMEA - National Marine Electronics Association.
NMEA 0183 - A standard for interfacing marine electronic devices (see section 18-12).
Route: Two or more waypoints linked in sequence to form a course for the boat (see section 6).
Sonar status - A summary of sonar settings.
TTN - Time to the next position the 8120 is
navigating to, either a waypoint or the cursor.
User card - A plug-in card that stores waypoints, routes and tracks (see section 1-2).
UTC - Universal Time Coordinated or Coordinated Universal Time, which is a standard world time, formerly called Greenwich Mean Time (GMT).
Waypoint - A position that you can set on the Instrument chart, for example a fishing spot or a point on a route (see section 5).
Weather - An estimate of the weather based on barometric pressure (requires Navman 7200 VHF radio).
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8120 Installation and Operation Manual88
Navigation data
The boat is sailing from the start to the destination and has moved off the plotted course from the start to the destination.
BRG Bearing to Destination: Bearing to the destination from the boat.
BRG Bearing to cursor: Bearing to cursor from boat (cursor mode, see section 3-2-1)
CDI Course Deviation Indicator: When the boat is navigating to a point, the chart and highway windows
show a parallel line on either side of the plotted course. These two lines are called the Course Deviation Indicator (CDI) lines. The distance from the plotted course to a CDI line is the CDI scale.
Set the CDI scale (see section 17-2) to the maximum distance that the boat should deviate from the
plotted course. The chart and highway windows show the CDI lines, which are like a highway over the water where the boat will move. The windows show how far the boat has deviated from the plotted course and if the boat is approaching a CDI line. If the XTE alarm is enabled (see section 17-8) an alarm will sound if the boat reaches a CDI line.
COG Course Over Ground: Direction in which the boat is moving over the ground.
CTS Course To Steer: Optimum course to steer to return to the plotted course.
DTG Distance To Go: Distance from the boat to the destination.
ETA Expected Time of Arrival: At the destination, assuming that SOG and COG remain constant.
DST Distance from boat to cursor (cursor mode, see section 3-2)
SOG Speed Over Ground: Current boat speed over the ground. This is not necessarily the same as the boat
speed through the water nor the speed at which it is approaching the destination.
STR Steering: The difference between COG and CTS.
TTG Time To Go: The estimated time to reach the destination.
XTE Cross Track Error: The distance from the boat to the nearest point of the plotted course. XTE may have
a letter: R means steer to the right to return to the plotted course, L means steer to the left.
VMG Velocity Made Good: The speed at which the boat is approaching the destination.
CTS
SOG (speed)
VMG (speed)
BRG
COG
Destination
Boat position
Start
STR
DTG (distance)
CDI scale (distance)
Plotted course
Start
Destination
XTE (distance)
Boat position
CDI scale (distance)
CDI line
Plotted course
CDI line
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8120 Installation and Operation Manual89
FCC Statement
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a normal installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an output on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced technician for help.
A shielded cable must be used when connecting a peripheral to the serial ports.
Appendix D Compliance statements
Industry Canada
Operation is subject to the following two conditions (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Page 90
Lon 174° 44.535’E
Lat 36° 48.404’S
Made in New Zealand MN000444A
Datahe lm 812 0 In st alla ti on an d O perat ion M an ual
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