Simrad EQ 55 Operator's Manual

EQ 55 OPERATORS MANUAL 950-70017001 Issue 1.2 February 1998

KONGSBERG SIMRAD MESOTECH LTD.

WARRANTY STATEMENT

Kongsberg Simrad Mesotech Ltd. warrants that its products are free from defective materials and/or workmanship for a period of 12 months from the date of receipt of goods by the purchaser, or 18 months from date of product shipment from the manufacturing facility (which ever occurs first). Kongsberg Simrad Mesotech will - at no charge - repair or replace (at its option) any part(s) determined to be defective of workmanship or materials, provided the warranty claim is made to either the manufacturing facility, or its authorized repair centres within the warranty period.

The purchaser is responsible for the examination of the product upon receipt. The purchaser is required to report any irregularity to received Kongsberg Simrad Mesotech goods to either the manufacturer - its Sister companies - or Agents, within 15 days of receipt of goods. Proof of date received may be required.

The warranty is void if warranty labels are broken; Kongsberg Simrad Mesotech will not warrant any product which is physically damaged, abused, altered, subjected to accident or negligence or misuse, or is incorrectly installed or used by the purchaser - or purchaser's representative.

Consumable items (including lamps, fuses, and worn O rings or shaft-seals) are excluded by the warranty.

Kongsberg Simrad Mesotech cannot warrant that its products are suitable for any particular or intended purpose. No other warranty is expressed or implied; Kongsberg Simrad Mesotech accepts no liability of consequential damages. Consequential damages include, but are not limited to: loss of profit, property damage, personal injury.

The maximum liability shall not, in any case, exceed the price of the product claimed to be defective.

Kongsberg Simrad Mesotech Ltd.

Port Coquitlam, BC - Canada

EQ 55 Operators Manual 950-70017001/1.

List of Contents Page 1

LIST OF CONTENTS

Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8

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Appendix A Appendix B

Introduction and System Familiarization

Operation of the EQ55

Principles of Operation

Installation Instructions for the EQ-55, Drawer, and Stand Alone

Maintenance, Troubleshooting, Repair and Spare Parts

Technical Information

Servicing the EQ-55

Electrical Drawings

......................................................................................

..................................................................................................

Default Settings

Glossary

Kongsberg Simrad Mesotech Ltd.

Port Coquitlam, BC - Canada

950-70017001/1.2 EQ 55 Operators Manua

Page 2 List of Content

Kongsberg Simrad Mesotech Ltd.

Port Coquitlam, BC - Canada

EQ 55 Operators Manual 950-70017001/1.

List of Contents Page

MODIFICATION RECORD

EQ 55 OPERATORS MANUAL

950-70017001

Issue: 1.2

February 1998

Issue

No. Date Initial Comments

1.2 02.98 Update

1.1 06.97 Update

1.0 10.96 Update

Draft 09.96 First Release

To assist us in making improvements to the product and this document, Simrad

Mesotech welcomes comments and constructive criticisms. Please send all such

comments, in writing, to:

Kongsberg Simrad Mesotech Ltd.

Documentation Department

1598 Kebet Way

Port Coquitlam, BC V3C 5M5

CANADA

Kongsberg Simrad Mesotech Ltd.

Port Coquitlam, BC - Canada

950-70017001/1.2 EQ 55 Operators Manua

Page 4 List of Content

Kongsberg Simrad Mesotech Ltd.

Port Coquitlam, BC - Canada

EQ-55 Operators Manual 950-7001001/Iss1.

Introduction and System Familiarization Page 1.1

PART 1

INTRODUCTION AND SYSTEM

FAMILIARIZATION

1. INTRODUCTION AND SYSTEM F AMIL IARIZAT ION............................ 1.3

1.1 INTRODUCTION AND SYSTEM FAMILIARIZATION............................1.3

1.2 SAFETY SUMMARY...................................................................................1.3

1.2.1 Fuse and Power Cord............................................................................1.3

1.2.2 Grounding.............................................................................................1.3

1.2.3 Safety Statements.................................................................................1.4

1.2.4 Lifting and Carrying.............................................................................1.4

1.2.5 Installation............................................................................................1.4

1.2.6 Getting Started (Quick Start)...............................................................1.4

1.2.7 Safety Procedures.................................................................................1.4

1.3 INSTALLATION .........................................................................................1.4

1.4 GLOSSARY OF TERMS ............................................................................. 1.4

1.5 OPERATION ...............................................................................................1.5

1.5.1 Maintenance..........................................................................................1.5

1.5.2 Troubleshooting....................................................................................1.5

1.5.3 Repair and Service................................................................................1.5

1.5.4 Principles of Operation......................................................................... 1.5

1.5.5 Default Settings....................................................................................1.5

1.6 SUMMARY OF EQ 55 FEATURES............................................................1.6

1.6.1 Display Screen Size...............................................................................1.6

1.6.2 Display Screen Resolution....................................................................1.6

1.6.3 Display Screen Colors...........................................................................1.6

1.6.4 Information on the Display Screen.......................................................1.6

1.6.5 Time Marker - Minute Increments.......................................................1.6

1.6.6 Auto Range Function............................................................................1.6

1.6.7 Units of Measure...................................................................................1.7

1.6.8 Expansion Ranges .................................................................................1.7

1.6.9 Color Threshold.....................................................................................1.7

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950-7001001/Iss1.2 EQ-55 Operators Manua

Page 1.2 Introduction and System Familiarizatio

1.6.10 Phased Range......................................................................................1.7

1.6.11 Transmit Power Reduction.................................................................1.7

1.6.12 Ranges................................................................................................. 1.7

1.6.13 Dual VRM............................................................................................ 1.7

1.6.14 Other Features....................................................................................1.8

Kongsberg Simrad Mesotech Ltd.

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EQ-55 Operators Manual 950-7001001/Iss1.

Introduction and System Familiarization Page 1.

1. INTRODUCTION AND SYSTEM

FAMILIARIZATION

1.1 INTRODUCTION AND SYSTEM FAMILIARIZATION

Welcome to SIMRAD's EQ 55 Echo sounder. The EQ 55 is a totally new echo sounder that can be used in any fishery in the world and is fully contained in just one cabinet. Several different configurations of transducers can be purchased separately for the EQ 55.

In this beginning chapter you will find an important section on safety precautions, a "getting started" section that helps you locate the information you need, and a section that summarizes the features built into the EQ 55.

Although this manual can be read in any sequence, we strongly encourage all users to first read the Safety Summary. It is also advisable for experienced users to at least scan the whole manual to find out what information is available when a question does arise.

WARNING: CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY SIMRAD MESOTECH. MAY VOID YOUR WARRANTY AND MAY CAUSE INCREASED RADIO FREQUENCY EMISS IONS.

1.2 SAFETY SUMMARY

1.2.1 Fuse and Power Cord

Note that the appropriate fuses must be employed. Ensure that the power

cord is firmly attached to the line filter on the rear panel.

1.2.2 Grounding

The EQ 55 is a sophisticated piece of electronic equipment. To reduce risk of electrical shock, properly ground the unit to the ship's ground using the wing nut ground stud on the back of the unit.

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950-7001001/Iss1.2 EQ-55 Operators Manua

Page 1.4 Introduction and System Familiarizatio

1.2.3 Safety Statements

This manual contains boxed information that notifies, cautions or WARNS about various actions. Take note of what they say.

1.2.4 Lifting and Carrying

Use proper lifting and carrying techniques when moving and installing the EQ 55.

1.2.5 Installation

Follow the installation instructions in Chapter 4 for proper, safe installation of the EQ-55. Ensure that the surface that the EQ 55 is mounted to is able to support the weight of the equipment, especially in rough weather.

1.2.6 Getting Started (Quick Start)

This section provides the user with a short, quick overview of the EQ 55 manual.

1.2.7 Safety Procedures

The EQ 55 is an electrical device. For your safety and the safety of your crew and vessel we strongly advise you to read Section 1.1 - Safety Summary.

1.3 INSTALLATION

Turn to Chapter 4 - Installation for correct procedures to use in installing the EQ 55.

1.4 GLOSSARY OF TERMS

If you have never used an echo sounder before or if you are unsure of how a term is used in this manual, then turn to Appendix B - Glo ssary of T erms.

Kongsberg Simrad Mesotech Ltd.

Port Coquitlam, BC - Canada

EQ-55 Operators Manual 950-7001001/Iss1.

Introduction and System Familiarization Page 1.5

1.5 OPERATION

If you are not familiar with the operation of the EQ 55, turn to Chapter 2 Operating the EQ-55.

1.5.1 Maintenance

Like all pieces of equipment, the EQ 55 needs to be properly maintained. Check

Section 5.1 Preventive Maintenance for details.

1.5.2 Troubleshooting

If, after following the instructions in Section - Operation of the EQ 55, you still experience difficulties operating the EQ 55, check with Section 5.2 -

Troubleshooting.

1.5.3 Repair and Service

In the event the EQ 55 fails to operate, see Section 5.3 - Repair and Service for instructions.

1.5.4 Principles of Operation

The scientific principles of the operation of the EQ 55 are explained in Chapter 3

- Principles of Operation.

1.5.5 Default Settings

The factory settings for the EQ 55 can be found in Appendix A - Default Settings. Included in this section is information on how to reset all the EQ 55

functions to their default settings.

Kongsberg Simrad Mesotech Ltd.

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950-7001001/Iss1.2 EQ-55 Operators Manua

Page 1.6 Introduction and System Familiarizatio

1.6 SUMMARY OF EQ 55 FEATURES

1.6.1 Display Screen Size

14 inches (356 mm) diagonal (nominal)

1.6.2 Display Screen Resolution

640 (horizontal) x 480 (vertical) pixels, .29 mm dot pitch

1.6.3 Display Screen Colors

• Sixteen colors, including background color. Scale lines, depth readings and setting indication will be white.

• Background color selections are blue and black.

• Targets are displayed in 12 colors.

1.6.4 Information on the Display Screen

• Digital scale and digital depth

• 12 color echo strength sample scale

• Ship speed (when optional sensor is employed)

• Water temperature (when optional sensor is employed)

• Ship's position (when position is available via NMEA interface)

1.6.5 Time Marker - Minute Increments

A time marker moves across the top of the screen as a blue bar/light blue bar in 60 second increments.

1.6.6 Auto Range Function

In Auto Range Mode, the range increase and decreases to keep the bottom always on the display screen.

Kongsberg Simrad Mesotech Ltd.

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EQ-55 Operators Manual 950-7001001/Iss1.

Introduction and System Familiarization Page 1.

1.6.7 Units of Measure

Meters, fathoms, passi braza and feet.

1.6.8 Expansion Ranges

The EQ 55 can display one of five different Expansion Ranges that are close ups of the bottom or VRM and are displayed across the lower third of the display screen.

1.6.9 Color Threshold

Up to 8 weak echo colors may be erased one at a time to suppress weak and unwanted echoes.

1.6.10 Phased Range

The "start" range, shown at the top of the screen, can be selected.

1.6.11 Transmit Power Reduction

Full Power (1) Medium Power (1/10) Low Power (1/100)

1.6.12 Ranges

One of 20 ranges can be selected.

1.6.13 Dual VRM

Variable Range Markers (VRM) for each frequency allows measurement of depth

to targets.

Kongsberg Simrad Mesotech Ltd.

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950-7001001/Iss1.2 EQ-55 Operators Manua

Page 1.8 Introduction and System Familiarizatio

1.6.14 Other Features

Gain, STC, White Line, Control Memory,, Brightness & Contrast Controls, Bottom Lock, AScope, Alarms, Adjustable Scroll Speed, Event Markers, Selectable Language, Optional Color Printer.

Kongsberg Simrad Mesotech Ltd.

Port Coquitlam, BC - Canada

EQ-55 Operators Manual 950-7001001/Iss 1.

Operation of the EQ-55 Page 2.1

PART 2

OPERATION OF THE EQ-55

2. OPERATION OF THE EQ 55 ...................................................................... 2.3

2.1 BASIC OPERATION OF THE EQ 55.........................................................2.3

2.1.1 Turning the EQ 55 On..........................................................................2.3

2.1.2 Joystick..................................................................................................2.3

2.2 MENU SELECTIONS.................................................................................2.5

2.2.1 Main Menu............................................................................................2.5

2.2.2 Low and High Frequency Menu...........................................................2.6

2.2.3 Low or High Frequency - Manual Range.............................................2.7

2.2.4 Low or High Frequency - Manual Phase..............................................2.8

2.2.5 Low or High Frequency - Auto Range ..................................................2.9

2.2.6 Low or High Frequency - Auto Phase.................................................2.10

2.2.7 Low or High Frequency - Set Auto Phase..........................................2.11

2.2.8 Low or High Frequency - Set VRM (Variable Range Marker) ..........2.12

2.3 DISPLAY

2.3.1 Display Mode - LF OR HF..................................................................2.14

2.3.2 Display Mode - LF OR HF/ASCOPE..................................................2.15

2.3.3 Display Mode - DUAL/VERT (Dual Vertical) ....................................2.16

2.3.4 Display Mode - DUAL/HORZ (Dual Horizontal)................................2.17

2.3.5 Display Mode - Navigation .................................................................2.18

2.4 EXPANSION MENU.................................................................................2.19

2.4.1 Expansion - Bottom Exp. (Bottom Expansion) ..................................2.20

2.4.2 Expansion - VRM EXP (VRM Expansion)..........................................2.21

2.4.3 Expansion - EXP RANGE (Expansion Range)...................................2.22

2.4.4 Set Marker Menu................................................................................2.23

2.5 GAIN MENU.............................................................................................2.24

2.5.1 Gain - LF and HF Gain.......................................................................2.25

2.6 TRANSMIT POWER MENU.....................................................................2.26

MODE MENU ..........................................................................2.13

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950-7001001/Iss 1.2 EQ-55 Operators Manua

Page 2.2 Operation of the EQ-55

2.7 CONFIGURATION MENU.......................................................................2.27

2.7.1 Configuration- Units of Measure........................................................ 2.28

2.7.2 Configuration - Background Color......................................................2.29

2.7.3 Configuration - Language...................................................................2.30

2.7.4 Configuration - EXT I/F (External Interface) Sub-menu...................2.31

2.7.5 Configuration - EXT I/F - NMEA 0183...............................................2.32

2.7.6 Configuration - EXT I/F - Printer.......................................................2.33

2.7.7 Configuration - EXT I/F - Ship's Speed..............................................2.34

2.7.8 Configuration - EXT I/F - Water Temperature..................................2.35

2.7.9 Configuration - EXT I/F - Trigger.......................................................2.36

2.7.10 Configuration - Test Pattern............................................................2.37

2.7.11 Configuration - TVG (Time Varying Gain).......................................2.38

2.7.12 Configuration - Color Threshold.......................................................2.39

2.7.13 Configuration - Scroll Speed.............................................................2.40

2.7.14 Configuration - Alarms Sub-menu...................................................2.41

2.7.15 Configuration - Alarms - Set Min Depth (Set Minimum Depth).....2.42

2.7.16 Configuration - Alarms - Set Max Depth (Set Maximum Depth)....2.43

2.7.17 Configuration - Alarms - Min and Max Alarms ON/OFF................2.44

2.7.18 Configuration - White Line...............................................................2.45

2.7.19 Configuration - Filter........................................................................2.46

2.7.20 Configuraiton - STC (Sensitivity Time Control)..............................2.47

2.7.21 Configuration - Depth Adjust (Depth Adjustment) .........................2.48

2.7.22 Configuration - Sound Velocity.........................................................2.49

2.7.23 Configuration - Save Settings...........................................................2.50

2.7.24 Configuration - Load Settings ..........................................................2.51

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EQ-55 Operators Manual 950-7001001/Iss 1.

Operation of the EQ-55 Page 2.

2. OPERATION OF THE EQ 55

2.1 BASIC OPERATION OF THE EQ 55

The EQ 55 is an easy to use echo sounder whose functions are quickly accessible through on-screen menus by means of a joystick.

Caution: Do not operate the EQ 55 with the transducers out of the water. Operation at full transmit power with the transducers out of the water risks permanent damage to the transducers.

2.1.1 Turning the EQ 55 On.

The EQ 55 is turned on by pressing the rocker switch in the lower left hand corner of the control panel.

2.1.2 Joystick

The EQ 55 is controlled through menus that you access by operating a joystick located on the control panel. Below is a list of what happens when you move the joystick. If you get lost in the menus, repeatedly push the joystick to the left, this will move you up to each previous menu until you arrive at the MAIN MENU. To make the MAIN MENU reappear push the joystick once to the right.

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950-7001001/Iss 1.2 EQ-55 Operators Manua

Page 2.4 Operation of the EQ-55

Pushing the joystick UP causes the cursor highlight to move up the selected menu.

Pushing the joystick to the LEFT causes the cursor highlight to move to the previous menu.

Pressing the joystick DOWN causes the cursor highlight to move down the selected menu.

Pushing the joystick to the RIGHT selects the highlighted function.

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EQ-55 Operators Manual 950-7001001/Iss 1.

Operation of the EQ-55 Page 2.5

2.2 MENU SELECTIONS

The EQ 55 is operated by making selections from various on-screen menus. This section explains what each menu listing means or does. To select a function, move the joystick up or down so the highlight is on the item you want, then press the joystick to the right to highlight and select the function.

Note: In this chapter each menu selection is illustrated with its menu. The

highlight is shown as shaded text. The menu being described is shown larger, any previous menus are shown smaller and in sequence as indicated by arrows. The previous menus also have highlighted text that follows the path taken to the present function. This allows you to see the menu selections necessary to select a particular function.

2.2.1 Main Menu

MAIN MENU

LF SETTING

HF SETTING DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

The Main Menu is the starting point for making menu selections for the EQ 55.

Note: When the Main Menu is displayed, moving the joystick to the LEFT will remove t he Main Men u from t h e display screen. Moving the joystick once more to the LEFT will also remove the Statu s W ind o w from t h e display screen. Moving the joystick to the RIGHT will restore the Status Window, and moving the joystick once more to the RIGHT will restore the Main Menu.

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950-7001001/Iss 1.2 EQ-55 Operators Manua

Page 2.6 Operation of the EQ-55

2.2.2 Low and High Frequency Menu

MAIN MENU

LF SETTINGS

HF SETTINGS DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

↓↓↓↓

LF SETTINGS

MANUAL RANGE

MANUAL PHASE AUTO RANGE OFF AUTO PHASE OFF SET AUTO PHASE SET VRM

Selecting LF or HF Settings from the Main Menu will take you to the Low Frequency (LF) Settings Menu or to the High Frequency (HF) menu.

These Menus allow you to configure the Range and Expansion functions of the Frequency channel of the EQ-55.

The selections available in the LF and HF Settings Menus are described on the following pages.

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EQ-55 Operators Manual 950-7001001/Iss 1.

Operation of the EQ-55 Page 2.

2.2.3 Low or High Frequency - Manual Range

MAIN MENU

LF SETTING

HF SETTING DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

↓↓↓↓

LF SETTINGS

MANUAL RANGE

MANUAL PHASE AUTO RANGE OFF AUTO PHASE OFF SET AUTO PHASE SET VRM

Selecting Manual Range from the LF or HF Settings Menu allows you to adjust the range displayed in the channel.

The selection window displays maximum and minimum ranges. The selected range can be changed by moving the j oystick up or down.

The selected range is shown between the maximum and minimum values possible. Once the desired range is shown, press the joystick to the right to take the selection.

RANGE

2000

STATUS

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950-7001001/Iss 1.2 EQ-55 Operators Manua

Page 2.8 Operation of the EQ-55

2.2.4 Low or High Frequency - Manual Phase

MAIN MENU

LF SETTING

HF SETTING DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

The phased range allows you to view a selected "window" below your vessel. The "manua l" ra n g e (set above) determines the vertical size of the "window." The "phase" range determines the depth of the upper edge of the " window."

↓↓↓↓

The selection window displays the "start" range.

LF SETTINGS

MANUAL RANGE

MANUAL PHASE

AUTO RANGE OFF AUTO PHASE OFF SET AUTO PHASE SET VRM

The range can be changed by moving the joystick up or down. Once the correct range is shown in the selection window, press the joystick to the right to make your selection.

PHASE

STATUS

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EQ-55 Operators Manual 950-7001001/Iss 1.

Operation of the EQ-55 Page 2.

2.2.5 Low or High Frequency - Auto Range

MAIN MENU

LF SETTING

HF SETTING DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

↓↓↓↓

LF SETTINGS

MANUAL RANGE MANUAL PHASE

AUTO RANGE OFF

AUTO PHASE OFF SET AUTO PHASE SET VRM

By selecting the Auto Range, the EQ 55 will automatically adjust the displayed range, keeping the display of the sea bottom in the lower half of the screen display.

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950-7001001/Iss 1.2 EQ-55 Operators Manua

Page 2.10 Operation of the EQ-55

2.2.6 Low or High Frequency - Auto Phase

MAIN MENU

LF SETTING

HF SETTING DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

Selecting the Auto Phase provides a combination of Expansion and Bottom Lock. In this mode, the selected Auto Phase range will be shown as a window. The window will be automatically "phased" up or down to keep the bottom in the window. This mode can be especially useful when used with Bottom Expansion. See page 8 for set AUTO PHASE range

↓↓↓↓

Note: When Auto Phase is selected, Auto

LF SETTINGS

MANUAL RANGE MANUAL PHASE AUTO RANGE OFF

AUTO PHASE OFF

SET AUTO PHASE SET VRM

Range is turned ON. Turning Auto Range OFF will disable Auto Phase.

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EQ-55 Operators Manual 950-7001001/Iss 1.

Operation of the EQ-55 Page 2.11

2.2.7 Low or High Frequency - Set Auto Phase

MAIN MENU

LF SETTING

HF SETTING DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

↓↓↓↓

LF SETTINGS

MANUAL RANGE MANUAL PHASE AUTO RANGE OFF AUTO PHASE OFF

SET AUTO PHASE

SET VRM

RANGE

100

Selecting the Set Auto Phase allows the user to specify the depth off of the bottom that he wishes to display. This range can be set between the ranges of 10 and 100 Meters at specific increments.

Note: Set Auto Phase is used in conjunction when Auto Phase is in the on position.

STATUS

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950-7001001/Iss 1.2 EQ-55 Operators Manua

Page 2.12 Operation of the EQ-55

2.2.8 Low or High Frequency - Set VRM (Variable Range Marker)

MAIN MENU

LF SETTING

HF SETTING DISPLAY MODE EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

Set VRM places a horizontal white line at a selected location. The use of a VRM allows you to measure the depth to any displayed target.

Use the joystick to highlight SET VRM, then press the joystick to the right to make the selection. Now, moving the joystick up or down will move the white VRM line, and the VRM depth will be shown in the STATUS window.

↓↓↓↓

LF SETTINGS MANUAL RANGE MANUAL PHASE AUTO RANGE OFF AUTO PHASE

SET VRM

LF VRM

Ù Ú

STATUS

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EQ-55 Operators Manual 950-7001001/Iss 1.

Operation of the EQ-55 Page 2.1

2.3 DISPLAY MODE MENU

MAIN MENU

LF SETTING HF SETTING

DISPLAY MODE

EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

↓↓↓↓

DISPLAY MODE

LF/ASCOPE HF HF/ASCOPE DUAL/VERT DUAL/HORZ NAVIGATION

Selecting Display Mode from the Main Menu will show the possible modes for displaying the information the EQ 55 provides.

Each selection in Display Mode is described on the following pages.

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950-7001001/Iss 1.2 EQ-55 Operators Manua

Page 2.14 Operation of the EQ-55

2.3.1 Display Mode - LF OR HF

MAIN MENU

LF SETTING HF SETTING

DISPLAY MODE

EXPANSION SET MARKER GAIN TRANSMIT POWER CONFIGURATION

↓↓↓↓

DISPLAY MODE

LF/ASCOPE HF HF/ASCOPE DUAL/VERT DUAL/HORZ NAVIGATION

The LF or HF selection of Display Mode dedicates the entire EQ 55 display screen to the display of data from the chosen Frequency channel.

The other transmitter is disabled.

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+ 124 hidden pages

Simrad EQ 55 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual