Navman 8120 User Manual

Datahelm 8120

Installation and Operation Manual

w w w . n a v m a n . c o m

Contents

1 Introduction .............................................................................................................................................................................5

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 Basic Operation ..........................................................................................................................................................................9

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 Navigation: Chart ..................................................................................................................................................................... 18

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

4 Video window .......................................................................................................................................................................... 24

5 Navigation: Highway window .................................................................................................................................................. 25

6 Navigation: Waypoints .............................................................................................................................................................25

6-1 Waypoints window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6-2 Managing waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7 Navigation: Routes ..................................................................................................................................................................28

7-1 Routes window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7-2 Managing routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8 Satellites ................................................................................................................................................................................. 31

8-1 Satellite window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

9 Sonar fishfinding: Introduction ...............................................................................................................................................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 Sonar fishfinding: Windows ...................................................................................................................................................41

10-1 Sonar history window - no split . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

10-2 Sonar Zoom window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

10-3 Sonar Bottom window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8120 Installation and Operation Manual2

10-4 Sonar 50/200 window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

10-5 Sonar A-Scope window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

11 Gauges window ......................................................................................................................................................................45

12 Data window .......................................................................................................................................................................... 45

13 Fuel functions and display ......................................................................................................................................................46

13-1 When you add or remove fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

13-2 Fuel window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

13-3 Fuel consumption curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

14 Tides window .........................................................................................................................................................................50

15 User card window ................................................................................................................................................................... 51

16 DSC/Buddy track windows ...................................................................................................................................................... 52

16-1 The windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

16-2 Using the windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

17 Setting up the 8120 ................................................................................................................................................................ 55

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 Installation ...........................................................................................................................................................................70

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

8120 Installation and Operation Manual3

Appendix A - Specifications ......................................................................................................................................................... 81

Appendix B - Troubleshooting .....................................................................................................................................................83

B-1 General problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

B-2 GPS navigation problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

B-3 Fuel consumption problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

B-4 Sonar fishfinding problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Appendix C Glossary and navigation data ...................................................................................................................................87

Appendix D Compliance statements ............................................................................................................................................ 89

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.

8120 Installation and Operation Manual4

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

8120 Installation and Operation Manual5

1-1 Overview

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.

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.

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.

8120 Installation and Operation Manual6

1-3 Plug-in cards

CAUTION

DANGER

WARNING

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

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

Turn the 8120 oﬀ (see section 2-2). Open the card cover on the right of the display.

Inserting a plug-in card

Hold the new card with the gold contacts on the far side.

Push the card down until it releases and can pop up.

Push the card into an empty socket until it clicks.

Lift the card out. Put the card in its case.

Close the card cover. Turn the 8120 on (see section 2-2).

8120 Installation and Operation Manual7

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.

Knob

Mounting bracket

8120 Installation and Operation Manual8

2 Basic Operation

Overview of the keys

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.

ESC













 – The key selects which window you are working

 – The key allows you to quickly switch between





 – This key places a waypoint on the Active Chart

 – Man overboard (MOB, see section 2-3).  – Turn Instrument on and off (see section 2-2); adjust the

– 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.

– 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.

with. The Active window is indicated with a red border.

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.

Window.

backlighting (see section 2-3).

8120 Installation and Operation Manual9

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 the highlight to the submenu, then press

ENTER

Starting a command

to move the highlight to the

Press command, for example Goto cursor, then

ENTER

press

to move

Changing data

First press

to move the highlight to

the data to change, then:

a) To change a tick box

means On or Yes

means Off or No.

ENTER

Press

to change the tick box.

b) To select an option

ENTER

1 Press

2 Press

option you want, then press

to display the list of options.

to move the highlight to the

ENTER

c) To change a name or number:

ENTER

1 Press

to display the name or number:

to select a letter or digit to

2 Press

change. Press

to change the letter

or digit.

Repeat this to change other letters or

numbers.

ENTER

3 Press

press

to accept the new value. Or

ESC

to ignore the changes.

d) To change a slider value

to decrease the value or

Press

to increase

the value.

8120 Installation and Operation Manual10

2-2 Turning on and off / auto power

CAUTION

WARNING

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).

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).

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.

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

When you have finished, press

Tip: Press twice to give the brightest screen, with maximum backlight and Night mode off.

to brighten.

ESC

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.

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

palette, see section 17-2.

ENTER

. To change only the chart

8120 Installation and Operation Manual11

2-4 Man overboard (MOB)

CAUTION

WARNING

CAUTION

WARNING

CAUTION

WARNING

The MOB feature saves the boat’s position and then navigates back to this point.

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).

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.

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.

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.

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.

ESC

Press

sound again if the alarm condition occurs again.

The Instrument has user settable alarms (see section 17-8).

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.

Never have Simulate mode on when using the Instrument to navigate on the water.

to clear the alarm. The alarm will

8120 Installation and Operation Manual12

2-7 The main windows

To show one of the main windows full-size,

DISPLAY

press

Note

1 The windows available depend on the

2 Set up commonly used windows as

and select the window.

optional sensors and instruments that are installed (see section 1-1).

favourites and press to switch between windows (see section 2-7-2).

8120 Installation and Operation Manual13

To show one of the other windows full-

DISPLAY

screen, press

, select More... and

select the window.

ESC

Press

to return from one of these windows to the previous window.

8120 Installation and Operation Manual14

2-7-1 Multi window displays

The 8120 can show up to four windows at once, for example Chart, Sonar, Gauges and Video:

Adding a window to the display

DISPLAY

Press

Changing window size

1 Press

2 Press

3 Press

, select Add window and select

a window to add. The 8120 automatically rearranges the display to show the new window.

DISPLAY

and select Split ratio.

to change the width of the windows. If the 8120 is displaying three or four windows, press

to change the height of the windows. Note: Some windows are fixed in size.

ENTER

Deleting a window from the display

1 Press until the window you want to

delete has a red border.

DISPLAY

2 Press

and select Delete window.

Exchanging two windows on the display

1 Press until the first window has a red

border.

DISPLAY

2 Press

, 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.

DISPLAY

2 Press

, 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).

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

will display the options menu

for the active window.

Chart is active Sonar is active

Red border

Press

8120 Installation and Operation Manual15

2-7-2 Favourite displays

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).

DISPLAY

2 Press

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.

and select Save this display.

Deleting a favourite display from the list

SETUP

1 Press

and select Favourites.

2 Highlight the display to delete, press

and select Delete.

Changing the order of the favourites list

SETUP

1 Press

2 Highlight the display to move, press

and select Favourites.

and select Move up or Move down.

8120 Installation and Operation Manual16

2-7-3 Data header

The displays can show data at the top, called the data header.

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

DISPLAY

1 Press

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

b Press

c Select a data item that is available

iii Repeat the above step to set the other

data fields.

and select Data header.

field.

ENTER

to display a menu of

data items.

on your system or select None to leave the field empty.

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.

ESC

5 Press

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

2 Set Compass to or .

and select Data header.

8120 Installation and Operation Manual17

3 Navigation: Chart

The chart window shows the chart, the boat’s position course and navigation data.

3-1 Introduction to navigating

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.

8120 Installation and Operation Manual18

3-1-2 Going to a waypoint or to a point on the

CAUTION

WARNING

CAUTION

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).

GOTO AUTO

3 Press

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

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

and select Goto cursor.

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

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).

and select

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

3 Press

follow. Press

and select Start Route

to highlight the route to

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

and select Skip. The Instrument starts navigating straight towards the next waypoint on the route.

Skipping a waypoint with the autopilot on might result in a sudden course change.

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

and select Cancel

route.

8120 Installation and Operation Manual19

3-2 Chart window

CAUTION

WARNING

To go to the Chart window:

DISPLAY

Press

and select Chart

A typical chart window shows:

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.

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.

8120 Installation and Operation Manual20

3-2-1 Chart modes

CAUTION

WARNING

The Chart has two modes:

Centre on boat mode

To switch to centre on boat mode in the chart

ESC

window, press

. 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:

36° 29.841’ N or S Latitude

175° 09.012’ E or W Longitude

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

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 scroll the photo.

Select Tide Station to display a tide

chart for the position (see section 13).

ii Select other items or press

return to the chart.

To see stored information about nearby

symbols press

and select Chart info.

Then follow step 3 above.

8120 Installation and Operation Manual21

ESC

3-2-5 Finding a chart symbol

To find and display a chart symbol:

1 Press

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

enter a name or letters contained in the

ENTER

port name, then press

4 A list of items is displayed. If there are

more items than will fit on the window, press

to page up and down.

For Ports by name: to search for a different

ESC

port name, press

then press

ENTER

5 Select the item and press

. change the name,

ENTER

. The chart window changes to show the item in the middle of the window.

To see stored information about the item,

ENTER

press

(see section 3-2-4).

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

select Distance.

2 Move the cursor to the start of the first

leg. It does not matter if this point is a

ENTER

waypoint or not. Press

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

and

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

Perspective to or .

4 To remove the last leg from the course,

press

and select Remove.

5 Repeat the above two steps to enter the

whole course.

6 To save the new course as a route,

press

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).

ESC

7 Finally, press

to return to the chart

window.

and set

8120 Installation and Operation Manual22

3-4 Projected course

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

3-5 Tracks and tracking

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.

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.

8120 Installation and Operation Manual23

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

2 Press

press

3 To return the colours to their default

settings, select Restore defaults.

4 Press

to highlight a control, then

to adjust the control.

ESC

Changing the video picture

Press

to zoom in

Press

to zoom out

Press

to move

the picture sideways

Press the picture up and down

ESC

Press

whole picture in the window

to ﬁt the

8120 Installation and Operation Manual24

5 Navigation: Highway window

CAUTION

WARNING

A B

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:

The highway window has a bird’s eye view of the boat’s course to a destination:

DISPLAY

To go to the Highway window, press

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

The highway window does not show land, dangerous waters or chart symbols.

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):

8120 Installation and Operation Manual25

6-1 Waypoints window

CAUTION

WARNING

To go to the waypoints window, press

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

to scroll up or

the window, press

down a page at a time.

DISPLAY

6-2 Managing waypoints

Do not create a navigation waypoint on land or in dangerous water.

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,

Or, to create a waypoint at a different

2 Press

3 A new waypoint, with the default name

4 Change the waypoint data if necessary

Creating a new waypoint from the waypoints window

1 In the waypoints window, press

2 A new waypoint, with a default name and

3 Change the waypoint data if necessary

Note: Waypoints can also be created when a route is created (see section 6-2-1).

ESC

press

to switch the chart to centre on

boat mode.

point, move the cursor to that point on the chart.

ENTER

and data is created.

(see section 5-2-7).

and

select Create.

data, is created at the boat position.

(see section 5-2-7).

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

and select Move.

3 Move the cursor to the new position and

ENTER

press

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,

3 Change the waypoint data

Editing a waypoint from the waypoints window

1 In the waypoints window, press or

2 Change the waypoint data

ENTER

press

(see section 5-2-7).

highlight the waypoint to edit. Press

and select Edit.

(see section 5-2-7).

8120 Installation and Operation Manual26

6-2-4 Displaying a waypoint on the chart

CAUTION

WARNING

This goes to the chart window, and shows the selected waypoint at the centre of the window.

1 In the waypoints window, press or

highlight the waypoint to display. Press

and select Display.

Or, in the Chart window, press

, 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.

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

3 Select Yes to confirm.

Deleting a waypoint from the waypoints window

1 In the waypoints window, press

to highlight the waypoint to delete. Press

2 Select Yes to confirm.

and select Delete.

6-2-6 Deleting all waypoints

1 In the waypoints window and press

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.

ENTER

Press

Use the cursor keys to change the data.

ENTER

Press

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

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.

8120 Installation and Operation Manual27

7 Navigation: Routes

CAUTION

WARNING

CAUTION

WARNING

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.

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.

DISPLAY

To go to the routes window, press

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.

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.

Make sure that routes do not cross land or dangerous water.

7-2 Managing routes

After creating or changing a route, display the route on the chart and check that it does not cross land or dangerous water.

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

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

ENTER

route and press

8120 Installation and Operation Manual28

ii A waypoint is created with a default

name. to save this waypoint press

to edit the waypoint refer to 5-2-7

ENTER

iii Press

a dotted leg line is displayed from the cursor to the previous waypoint

iv Move the cursor to the end of the first

ENTER

leg and press

v Repeat i to iv until the last waypoint in

the route is placed and saved

ESC

vi Press

to complete the route

Menu options while creating a route:

1 To add a waypoint to the route

i Press

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

and select Insert.

iii Move the cursor to where the new

route waypoint will be.

ENTER

iv Press

3 To move a waypoint in the route:

i Move the cursor to the waypoint to

move.

ii Press

and select Move.

iii Move the cursor to where the waypoint

will be.

ENTER

iv Press

4 To remove a waypoint from the route:

i Move the cursor to the waypoint to

remove from the route.

ii Press

and select Remove. The waypoint is removed from the route, but the waypoint is not deleted.

5 To start navigating the route

i Press

and select Start

6 To end creating the route

i Press

and select End

7 To delete the route

i Press

and select Delete

ii Select yes to confirm.

ENTER

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

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

ENTER

window and press

ii Change the name if necessary.

ENTER

iii Press

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

to see them.

5 To remove a waypoint from the route:

i Select the waypoint to remove.

ii Press

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.

and

8120 Installation and Operation Manual29

7-2-2 Editing a route

Editing a route from the chart

1 In the routes window, select the route to

edit. Press

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

highlight the route to edit. Press

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

highlight the route to window. Press

and select Display.

Or, in the Chart window, press

Find, then select Route. Select a route from the list.

2 The Instrument displays the selected route

on the chart.

, select

7-2-4 Deleting a route

1 In the routes window, press

highlight the route to delete. Press

and select Delete.

2 Select Yes to confirm.

7-2-5 Deleting all routes

1 In the routes window, press

select Delete all.

2 Select Yes to confirm.

7-2-6 Navigating a route

See section 3-1-3.

and

8120 Installation and Operation Manual30

8 Satellites

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.

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.

8120 Installation and Operation Manual31

8-1 Satellite window

The satellite window has information about the GPS satellites and GPS position.

DISPLAY

To go to the satellite window, press

select Other, then select Satellite.

The satellite window shows:

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.

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

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.

8120 Installation and Operation Manual32

The appearance of echoes displayed are

CAUTION

WARNING

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.

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

• 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.

Use the automatic Cruising or Fishing modes when learning to use the Instrument or when travelling at speed.

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)

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

8120 Installation and Operation Manual33

CAUTION

DANGER

WARNING

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.

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

45° cone

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.

11° cone

300 250 60

400 330 80

600 500 120

800 660 150

1000 830 190

8120 Installation and Operation Manual34

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 of f the bottom and is not shown on the window

9-3 Single and Dual frequency fishfinding

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

, 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.

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.

8120 Installation and Operation Manual35

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).

B B

A Narrow angle, more detailed 200 kHz cone

B Wide angle, less detailed 50 kHz cone

8120 Installation and Operation Manual36

Comparison of the same fish scenario displayed at different frequencies:

1 minute ago 30 seconds ago Now

50 kHz display 200 kHz display

200/50 Khz display Mixed display

8120 Installation and Operation Manual37

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.

8120 Installation and Operation Manual38

• It is difficult to get fish arches in shallow

CAUTION

WARNING

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.

Normal f ish 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

Fun symbol + depth

Fish arch + depth

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

press

to increase range or

to decrease range

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).

8120 Installation and Operation Manual39

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

Select Threshold to display the thresholds.

ENTER

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

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).

This window is called the gain window.

8120 Installation and Operation Manual40

10 Sonar fishfinding: Windows

DISPLAY

To show the Sonar window, press

select Sonar.

There are five kinds of sonar window. To use a

window, press

, 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)

10-1 Sonar history window - no split

A B

, then

If the window is split, adjust the split ratio if required:

1 Press

2 Press

3 Press

and select Sonar window split.

to adjust the ratio.

ENTER

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).

10-1-1 Extended history mode

To review an old sonar echo, use 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

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.

and

ESC

to return to

History position bar

8120 Installation and Operation Manual41

10-2 Sonar Zoom window

D E

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

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

and select Bottom lock.

2 Select On or Off.

or If Bottom lock is on, pressing or

will turn it off.

8120 Installation and Operation Manual42

10-3 Sonar Bottom window

A Zoomed bottom signal

B Sonar history

10-4 Sonar 50/200 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

range.

keys to adjust the zoom

• The Instrument calculates the zoom depth automatically.

It is not necessary to turn Bottom lock on for this 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

8120 Installation and Operation Manual43

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:

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).

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 that the bottom is displayed.

2 If necessary, select the sonar frequency to

adjust the settings for. Press

Frequency and select 200 kHz or 50 kHz.

3 Press

Split A-scope.

4 Press

ENTER

adjust gain or threshold for a frequency, press

or adjust, then press 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

or to adjust range so

, select

, select Sonar splits then select

to display the Gain window. To

to select the setting to

to change the

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.

8120 Installation and Operation Manual44

11 Gauges window

The Gauges window shows boat data, such as water speed, as analog gauges. To select the

DISPLAY

Gauges window, press

, select More, then select Gauges. Before using the Gauges window, set Speed range, Max RPM and Max fuel flow (see section 17-11).

12 Data window

Selecting a Gauges layout

The Gauges window can show one of four gauge layouts. To select a layout from the

Gauges window, press

, 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

3 Highlight the gauge to change. Press

and select Gauge setup.

ENTER

and select the data to display in the gauge.

4 Repeat the above step to change other

gauges.

ESC

5 Press

The data window has large numeric data fields and a graph of depth and water temperature if available. To go to the data

DISPLAY

window, press

, select More, then select

Data.

To select what data is displayed:

1 Press

and select Data setup.

2 Change a data field:

i Press the cursor keys to highlight the

field.

ENTER

ii Press

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.

ESC

4 Press

8120 Installation and Operation Manual45

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.

SETUP

2 Press

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

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.

then select Fuel.

8120 Installation and Operation Manual46

13-2 Fuel window

DISPLAY

To go to the Fuel window, press

, 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.

8120 Installation and Operation Manual47

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.

SETUP

2 Press

3 Select Fuel consumption curve,

then select New.

then select Fuel.

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

ENTER

box stays green. Then press

. 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,

ESC

press

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

ENTER

stabilise, then press

. Wait while the

Instrument records the data.

8120 Installation and Operation Manual48

13-3-2 Managing fuel consumption curves

Record several curves for different conditions.

Renaming a curve

SETUP

1 Press

then select Fuel.

2 Select Fuel consumption curve.

ENTER

Select Name, press

and select the

name of the curve to rename.

ENTER

3 Select Rename and press

the name and press

ENTER

. Change

Deleting a curve

1 Press

once or more until the Setup

menu is displayed, then select Fuel.

2 Select Fuel consumption curve.

ENTER

Select Name, press

and select the

name of the curve to delete.

ENTER

3 Select Delete and press

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

ENTER

1 To go to the Fuel window, press

select Other, then select Fuel.

2 Press

, 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.

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.

8120 Installation and Operation Manual49

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.

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

Other, then select Tides.

To go to the tides window for any tide station:

1 From the chart window, press

select Find.

2 Select Tide stations.

The tides window shows data for the chosen date

A B

DISPLAY

, select

and

3 A list of tide stations are displayed. Select

the tide station to display. The chart redraws with the tide station centred.

4 Press

and select Chart info.

5 Select Tide height.

Choosing the date of the tide chart

1 From the tides window, press

2 Select Today, Next day or Prev day.

To choose a different date from these,

select Set date, edit the date,

ENTER

press

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

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

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

8120 Installation and Operation Manual50

15 User card window

CAUTION

DANGER

WARNING

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

select Other, then select User card.

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

to scroll up or

on the window, press 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.

save.

and select Save.

1 Press

2 Select Waypts, Routes or Tracks.

3 For Tracks, select the track number to

DISPLAY

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.

8120 Installation and Operation Manual51

To load a file to the Instrument:

CAUTION

WARNING

1 Select the file to load.

2 Press

and select Load.

Deleting a file from the user card

1 Select the file to delete.

2 Press

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

and select Card.

2 Select Read.

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.

DISPLAY

To go to the DSC windows, press

Other, then press

to select one of the

three windows: Distress, Poll or Buddy track.

If there are more items than will fit on the window, press

to see the others.

, select

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

and select Card.

2 Select Format.

3 Select Yes to confirm.

Do not format a chart card.

Sorting the file names

This sorts the displayed file names.

1 Press

2 Select sort by Name, Type or Time.

and select Sort.

8120 Installation and Operation Manual52

16-1 The windows

Distress

Boats that have sent DSC distress messages and their positions.

Poll

Boats you have manually polled on the VHF radio, and their position at that time.

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.

Buddy track

Buddy boats from your DSC radio. The radio regularly calls the boats and updates their positions.

8120 Installation and Operation Manual53

16-2 Using the windows

Displaying a boat on the chart

1 Press

2 Press

to select a boat.

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

2 Press

to select a boat.

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

2 Press

to select a boat.

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

2 Press

to select a boat.

and select Edit waypoint. Edit the waypoint data if required (see section 5-2-7).

On a chart window:

A Distress boats are distress waypoints

B Buddy track boats are buddy symbols

Deleting a boat

At the Distress or Poll windows:

1 Press

2 Press

to select a boat.

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

2 Press

to select a boat.

and select Delete all. All boats are deleted from that window and any boat waypoints are deleted.

8120 Installation and Operation Manual54

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.

SETUP

To go to a setup option menu, press

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.

8120 Installation and Operation Manual55

Setup opt ion menus

Factory default settings are shown. The setup data available will depend on the optional sensors and instruments installed.

System (see 17-1)

GPS (see 17-4)

Logs (see 17-7) Comms (see 17-10)Units (see 17-9)Alarms (see 17-8)

Chart (see 17-2)

General, Water, Land and Other submenus (17-2)

Fuel (see 17-5)

SmartCraft

(See the SmartCraft

Gateway Installation

and Operation Manual)

Sonar (see 17-3)

Track (see 17-6)

Time (see 17-12) Favourites (see 17-13)

Simulate (see 17-14)Calibrate (see 17-11)

8120 Installation and Operation Manual56

17-1 Setup > System

Press

menu is displayed, then select System:

once or more until the Setup

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.

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.

8120 Installation and Operation Manual57

17-2 Setup > Chart

CAUTION

WARNING

Press

menu is displayed, then select Chart:

once or more until the Setup

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.

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.

8120 Installation and Operation Manual58

NMEA datum offset

CAUTION

WARNING

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

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.

4 Press

5 Press

and select Set.

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

3 Press

and select Clear.

ESC

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.

8120 Installation and Operation Manual59

General submenu

Plotter mode Only scales available on the chart card can be displayed.

If you press

dow 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.

or to select a chart scale which is not available, on the chart card, the chart win -

Anticlutter Names and icons shown. Note: this is independent of the change in detail shown at diﬀerent

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

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

Text/icon size Select the size of chart text and icons.

zoom levels.

(see section 3-4). The options are 2 minutes, 10 minutes, 30 minutes, 1 hour, 2 hours or Oﬀ.

next four detail levels; On shows all.

Water submenu

Water features displays nature of seabed (for example, M shows areas of mud)

Bathymetric[s] lines Displays underwater depth contours between Bath & dndgs min

Spot soundings Displays underwater depth contours between Bath & dndgs min

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

and tide station icons.

and max.

(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

Names displays place names.

Lights Light House window options: Off hides all light indicators (the icon still shows); No sectors

Nav-aids Displays signals (fog, radar, radio stations) and bouys. Int and US select the icon format; Simpl

Attention areas displays attention area boundaries and information icons ; attention areas are important areas,

waypoints with their display option set to Icon or I+N (Icon and Name); Show all displays all waypoints (see section 5).

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

draws simpler icons.

such as restricted anchorages or shallow areas.

8120 Installation and Operation Manual60

17-3 Setup > Sonar

SETUP

Press

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.

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.

8120 Installation and Operation Manual61

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

17-4 Setup > GPS

Press

menu is displayed, then select GPS:

once or more until the Setup

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

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.

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.

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).

SETUP

Press

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).

8120 Installation and Operation Manual62

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.

ENTER

6. Press

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.

when the reading is correct.

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

8120 Installation and Operation Manual63

example vary the speed of one engine or have one engine running and the other stopped.

3 Press or

for the port engine. Press

select Port and press

to select the line with data

ENTER

. Press

4 Repeat steps 2 and 3 for the starboard

engine.

ESC

5 Press

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

SETUP

Press

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.

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.

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.

8120 Installation and Operation Manual64

17-7 Setup > Logs

SETUP

Press

then select Logs:

17-8 Setup > Alarms

SETUP

Press

then select Alarms:

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.

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.

8120 Installation and Operation Manual65

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

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 battery

Low fuel

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)

/2 sec depth is greater than the alarm trigger value

/2 sec battery voltage is less than the alarm trigger value

/2 sec fuel remaining equals the alarm trigger value

17-9 Setup > Units

Press

SETUP

then select 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

The default units are shown above.

Distance

nm (nautical miles), mi (miles) or km (kilometres)

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)

8120 Installation and Operation Manual66

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

Use this feature when the Instrument is connected to other NAVMAN instruments through NavBus or any compatible NMEA instrument.

Press

menu is displayed, then select Comms:

once or more until the Setup

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).

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 is displayed, then select Calibrate:

once or more until the Setup

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.

8120 Installation and Operation Manual67

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

to change the displayed

speed to the true value.

ENTER

4 Press

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

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.

8120 Installation and Operation Manual68

17-12 Setup > Time

CAUTION

WARNING

Press

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.

17-13 Setup > Favourites

See section 2-7-2.

17-14 Setup > Simulate

Simulate mode is a way of becoming familiar with the Instrument (see section 2-6).

Press

once or more until the Setup

menu is displayed, then select Simulate:

Simulate

Turn simulate mode off

Turn simulate mode on

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.

1 Select Local offset.

2 Press or

press

to change the offset, then

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.

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

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.

ESC

to switch to centre on

8120 Installation and Operation Manual69

18 Installation

CAUTION

WARNING

CAUTION

DANGER

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.

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.

8120 Installation and Operation Manual70

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

8120 Installation and Operation Manual71

18-2 Installation: Options and Accessories

• 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.

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.

8120 Installation and Operation Manual72

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.

 Sonar Sonar Transducer  Video in Video Input (Analogue composite [NTSC-

PAL])

 Comms Not Used  GPS NAVMAN 1240 GPS Antenna  Fuel/Nav - NAVMAN Fuel TXD

- Diesel Fuel TXD

- Smartcraft Gateway

 Not Used  Power/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.

• 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.

8120 Installation and Operation Manual73

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.

Knob

Mounting bracket

8120 Installation and Operation Manual74

18-4 Installation: Power/data cable

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

Power/data cable

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)

Red

Yellow

Black

Fuse 2A

Main switch

12/24 V DC

Black

Power/data cable

Yellow

Red

Black

Fuses 2A

Ignition

Ignition switch

Main switch

12/24 V DC

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

Red

Black

Green

External beepers or

lights

8120 Installation and Operation Manual75

18-5 Installation: GPS antenna

CAUTION

WARNING

CAUTION

WARNING

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.

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

MOB will not work if the Instrument does not have a GPS fix.

ENTER

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.

18-6 Installation: Sonar transducer

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.’

8120 Installation and Operation Manual76

Blue

Sonar cable

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)

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)

White

Fuel sensor cable

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).

White

Diesel sensor cable

During setup:

a) set NavBus to (see section 17-10)

b) set the fuel data (see section 17-5)

8120 Installation and Operation Manual77

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)

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).

Black

White

Power/data cable

Orange

Blue

Radio power/data cable

Smartcraft Gateway

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.

8120 Installation and Operation Manual78

18-11 Installation: Other NavBus instruments

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.

Black

Power/data cable

Orange

Blue

NavBus wires to 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)

8120 Installation and Operation Manual79

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).

18-13 Installation: Setup and test

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).

Power/data cable

White NMEA out

White

Black

White NMEA in (requires Special Fuel Cable)

Black NMEA ground

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.

8120 Installation and Operation Manual80

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)

8120 Installation and Operation Manual81

385 mm (15.1 ") 78.5 mm(3.1 " )

256 mm (10.1 ")

304 mm (12.1 ")

List of datums

11.4 mm (0.45 ")

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

8120 Installation and Operation Manual82

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

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.

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.

8120 Installation and Operation Manual83

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:

ESC

Press

mode (see section 3-2-1).

to switch to centre on boat

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.

B-3 Fuel consumption problems

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.

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.

8120 Installation and Operation Manual84

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).

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.

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.

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.

8120 Installation and Operation Manual85

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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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).

Ba thymetric 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).

8120 Installation and Operation Manual87

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.

Destination

SOG (speed)

STR

Plotted course

Start

DTG (distance)

VMG (speed)

COG

CTS

BRG

Boat position

Destination

Plotted course

CDI line

CDI scale (distance)

XTE (distance)

Boat position

CDI line

CDI scale (distance)

Start

8120 Installation and Operation Manual88

Appendix D Compliance statements

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.

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.

8120 Installation and Operation Manual89

Lat 36° 48.404’S

Lon 174° 44.535’E

Made in New Zealand MN000444A

Da tahelm 812 0 Ins tallati on and Ope ration Ma nual

Navman 8120 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual