Simrad PI44 User Manual

Operator manual

Simrad PI44 Catch monitoring system

www.simrad.com

M A X I M I Z I N G Y O U R P E R F O R M A N C E A T S E A

(CD11035E)

850-165085 / Rev.B

Simrad PI44

Catch monitoring system

Operator manual

Important notice

Operation of the PI44 catch monitoring system

assumes that the communication between the

Operator Unit and the sensors is fully functional.

Ensure that the communication channels and update

rates defined on the Operator Unit matches those of

the sensors.

About this document

Rev Date Written by Checked by Approved by

Rev.B

02.12.05 RBr KR KR

Revised for SW version 0.40. New function Trawl Calculator implemented.

reproduced or otherwise copied without prior permission from Simrad AS. The information contained in this document is subject to change without prior notice.

Simrad AS shall not be liable for errors contained herein, or for incidental or consequential damages in connection with the furnishing, performance, or use of this document.

The equipment to which this manual applies must only be used for the purpose for which itwasdesigned.Improperuseormaintenancemay causedamagetotheequipmentorinjury topersonnel. The usermustbefamiliar with the contentsof the appropriate manuals before attempting to operate or work on the equipment. Simrad AS disclaims any responsibility fordamageorinjurycausedbyimproperinstallation,useormaintenanceoftheequipment.

If you require maintenance on your Simrad equipment, contact your local dealer. You can also contact Simrad using the following e-mail address: fish-support@simrad.com

Sections

1Introduction

This section introduces the PI44 catch monitoring system operator manual. Refer to page 1.

2 System description

This section provides a general introduction to the PI44 catch monitoring system and the units in use. Refer to page 3.

3 Getting started

This section provides general guidelines to help you get started with the PI44 catch monitoring system. Refer to page 9.

4 Applications

This section gives an overview of the various applications that the PI44 can offer. Refer to page 25.

Operator manual

5 Display modes

This section gives an in--depth description of all the display presentations. Refer to page 32.

6 Operational procedures

This section provides detailed procedures to guide you through the most common functions. Refer to page 55.

7 Practical use of the sensors

This section describes how to install and use each sensor type. Both PI and PS sensors are described and explained. Refer to page 103.

8 Sensor chargers

This section describes how to install and use the sensor chargers.Refer to page

164.

9Menusystem

This section allows you to access the refer ence information from the menu structure. Refer to page 169.

10 References

This section details the various setup pages, those selected from the menu system and those accessed from the display presentation. Refer t o page 173.

11 PI Configurator

This section explains how to use the PI Configurator utility to change the sensor’s communication channel and update r ate. Refer to page 226.

850-165085 / Rev.B

Simrad PI44

12 Sensor test procedures

This section provides simple test procedureyou can use to verify thethe sensors are working properly. Refer to page 265.

13 Technical specifications

This section provides the basic technical specifications. Refer to page 285.

14 Software updates

If you need to upgrade the software in your PI44 Operator Unit, the necessary procedures can be found here. Refer to page 291.

850-165085 / Rev.B

Operator manual

INTRODUCTION 1..............................................

SYSTEM DESCRIPTION 3......................................

System diagram 4..........................................

Operator Unit 5...........................................

Hull mounted and portable hydrophones 6......................

Sensor overview 7.........................................

Battery chargers 8..........................................

GETTING STARTED 9...........................................

How to switch power on and off 10.............................

Introducing the presentation principles 11........................

Defining initial presentation pages 13...........................

Introduction to the main menu 16..............................

Introduction to the keypad 17.................................

Introducing the sensors 20....................................

APPLICATION EXAMPLES 25....................................

Purse seine 26..............................................

Danish seine 27............................................

Bottom trawl 28............................................

Pelagic trawl 29............................................

Echo sounder 30............................................

Graphic display 31..........................................

DISPLAY PRESENTATIONS 32..................................

Numeric display 33.........................................

Graphic display 41..........................................

Surface temperature 45.......................................

Status display 46...........................................

Echo sounder display 50.....................................

Highway display 53.........................................

Position display 54..........................................

OPERATIONAL PROCEDURES 55................................

Overview 55...............................................

How to define sensor presentation 56...........................

How to set up the sensors 58..................................

How to mount the sensors on the net 61.........................

How to use the sensors 62....................................

How to replace the sacrificial water switch 63....................

How to test the sensors 64....................................

How to calibrate the Depth sensor 65...........................

850-165085 / Rev.B

III

Simrad PI44

How to define sensor offsets 66................................

How to set up a Twin Spread sensor for twin trawl applications 67....

How to set up two Twin Spread sensors for dual twin trawl 72.......

How to access graphic display parameters 79.....................

How to view echo sounder data 80.............................

How to set up marker lines 81.................................

Special features for trawl marker lines 86........................

How to access echo sounder parameters 88.......................

How to use visual aids and filters 89............................

How to define echo sounder range 91...........................

How to zoom in on bottom echoes 93...........................

How to zoom in on pelagic echoes 94...........................

How to enable A-Scope presentation 95.........................

How to define alarm limits 96.................................

How to select menu language 99...............................

How to control automatic page rotation 100.......................

How to restore default settings 101..............................

How to personalize your system 102.............................

PRACTICAL USE OF THE SENSORS 103..........................

Sensor configuration 104......................................

PI Bottom Contact sensor 107..................................

PS Bottom Contact sensor 111.................................

PI Catch sensor 115..........................................

PS Catch sensor 120..........................................

PI Depth sensor 124..........................................

PS Depth sensor 129.........................................

PI Height sensor 134.........................................

PI Rip sensor 138............................................

PI Spread and Remote sensors 143..............................

PI Twin Spread 148..........................................

PI Temperature sensor 153.....................................

PS Temperature sensor 159....................................

SENSOR CHARGERS 164..........................................

Overview 164...............................................

PI Charger 165..............................................

PS30 Charger 167...........................................

MENU SYSTEM 169................................................

The main menu 170..........................................

Echo quick menu 172.........................................

850-165085 / Rev.B

Operator manual

REFERENCES 173..................................................

Setup map 174..............................................

Depth calibration 176.........................................

Echo presentation setup 177....................................

Echo sounder setup 180.......................................

Factory presets 183..........................................

Graphic setup 184...........................................

Interface setup 187...........................................

Marker line setup 197.........................................

Navigation setup 200.........................................

Numeric setup 202...........................................

Offset adjust 203............................................

Page setup 204..............................................

Palette setup 205............................................

Position display setup 206.....................................

Quick guide 207.............................................

Receiver setup 208...........................................

Sensor alarms 211...........................................

Sensor setup 215............................................

Speed setup 217.............................................

Status setup 218.............................................

Surface temperature setup 219..................................

Temperature setup 220........................................

Trawl calculator 221..........................................

Trawl info setup 223.........................................

Units setup 225..............................................

PI CONFIGURATOR 226..........................................

Purpose 226................................................

Basic information 227........................................

About sensor configuration 229.................................

Main dialogue description 231..................................

Operational procedures 233....................................

References 240..............................................

Maintenance 261............................................

SENSOR TEST PROCEDURES 265.................................

Overview 265...............................................

Bottom Contact test procedure 266..............................

Spread & Remote sensors test procedure 269......................

Catch sensor, test procedure 273................................

850-165085 / Rev.B

Simrad PI44

Depth sensor, test procedure 276................................

Temperature sensor, test procedure 279...........................

Height sensor, test procedure 282...............................

TECHNICAL SPECIFICATIONS 285...............................

Sensors 286................................................

SOFTWARE UPDATES 291........................................

Overview 291...............................................

DSP Software upgrade 292....................................

MMI Software upgrade 296....................................

PI DSP Upload 299..........................................

INDEX 300.........................................................

850-165085 / Rev.B

Operator manual

Sensors

Use this table to write down the sensors you use on your PI44 catch monitoring system.

Sensor

type

Serial

number

Communication

channel

Update

rate

850-165085 / Rev.B

VII

Simrad PI44

Sensors

Use this table to write down the sensors you use on your PI44 catch monitoring system.

Sensor

type

Serial

number

Communication

channel

Update

rate

VIII

850-165085 / Rev.B

INTRODUCTION

The Simrad PI44 is an integration of proven commercial fishing technologies which can dramatically increase the yield and effectiveness of purse/danish seining and bottom/pelagic trawling applications.

By means of six underwater sensors mounted on the gear, this robust, maintenance-free catch monitoring system allows unparalleled control over fishing operations by providing continuous, centralised information on the vessel’s position, its gear and the environment at and below the surface.

This manual is not intended to be read from cover to cover, but is designed as a book of references that you can consult whenever necessary.

This manual describes PI44 software version 0.40.

Introduction

Topics

→ System description, page 3 → Getting started, page 9 → Applications, page 25 → Display modes, page 32 → Operational procedures, page 55 → Sensors, page 103 → Menu system, page 169 → References, page 173 → PI Configurator, page 226 → Sensor test procedures, page 265 → Software updates, page 291

850-165085 / Rev.B

Simrad PI44

Changes to this manual

The following changes have been made to this manual.

Rev.A

This was the original issue.

Rev.B

Operational procedures: Additional procedures added. Sensors: “PI Twin Spread” and “Sensor configuration” chapters

added.

Software update: This is a new section. New software version: SW 0.40 implemented. New function

“Trawl calculator” described.

850-165085 / Rev.B

SYSTEM DESCRIPTION

The Simrad PI44 catch monitoring system consists of an operator station, a hydrophone and an optional echo sounder transducer. The hydrophone and the transducer are both mounted under the vessel’s hull. The system further comprises a number of small and robust sensors measuring the conditions on your fishing gear.

The PI44 catch monitoring system can work with six sensors simultanously.

The sensors are powered by built-in rechargeable batteries. They are housed in titanium casings, and designed using advanced shock absorbing materials. The information collected by the sensors are sent through the water to the hydrophone by means of coded sound waves. From the hydrophone, the signals are sent to the operator unit, which decodes the information, interprets it, and finally present it to you.

System description

Topics

→ System diagram, page 4 → Operator unit, page 5 → Hydrophones, page 6 → Sensors overview, page 7 → Battery chargers, page 8

850-165085 / Rev.B

Simrad PI44

System diagram

(A) = Operator Unit (B) = PI charger (C) = Hydrophone

(provides communication with the sensors)

(D) = Optional echo sounder transducer. Several types are available.

(E) = Sensors mounted on the net. Maximum six sensors may be used simultanously, and several types are available.

(F) = Interfaces to external sensors (serial lines, NMEA format)

(G) = DC power input

850-165085 / Rev.B

System description

Operator Unit

The PI44 Operator Unit is a marine grade electronic instrument incorporating an impact resistant polycarbonate front panel, die-cast aluminium housing and watertight electrical connections.

The PI44 electronics are sealed in the operator unit allowing the it to be flush or bracket mounted in the wheelhouse or at an exposed control station.

Computed information is displayed in both numerical and graphical form on the display. The unit is operated using drop-down menus and an integrated keypad.

850-165085 / Rev.B

Simrad PI44

Hull mounted and portable hydrophones

Two hull mounted hydrophones are available, one for purse seining operations, and one for trawl operations. You can install both, and then select active hydrophone by means of a selector box on the bulkhead.

Purse seining: The hull mounted hydrophone for purse seining operations has a 90 degrees horizontal beam and a 30 degrees vertical beam to provide the PI44 with optimal reception from the sensors. This specific beam pattern is especially suited for purse seining and the wide coverage area reduces the need for careful alignment.

Trawling: The hull mounted hydrophone for trawling operations has a 50 degrees horizontal beam and a 30degrees vertical beam to provide the PI44 with optimal reception from the sensors. This specific beam pattern is especially suited for trawling and the wide coverage area reduces the need for careful alignment.

(CD5582)

Portable: A portable hydrophone is also available. It is designed as a temporary measure until a fixed hydrophone can be installed at the vessel’s next planned dry docking. It has an omni-directional beam and a 50 meter integrated cable which is sheathed in polyurethane providing robust external protection to compliment its 150 kg tensile strength. The cable is supplied on a reel for convenient retrieval and stowage, and is equipped with a plug for easy attachment to the Operator Unit.

850-165085 / Rev.B

System description

Sensor overview

This chapter provides a very short description of each sensor.

• Depth sensor - The Depth sensor provide information about

the current depth as well as the descending or ascending rate related to the surface.

• Catch sensor - The Catch sensor provides information about

the amount of catch in the trawl. The sensor monitors the opening of the meshes in the cod-end, and will activate once the caught volume pulls the detector wire. To monitor the filling rate, you are adviced to use minimum two sensors.

• Bottom Contact sensor - The Bottom Contact sensors

detects if a trawl is accidentally lifted off the seabed, or a purse seine is touching the bottom.

• Rip sensor - The Rip sensor provides an immediate warning

when the net is ripped.

• Temperature sensor - Temperature sensors read and transmit

the ambient water temperature at the gear depth.

• Height sensor - The Height sensor contains s small echo

sounder to measure the current depth related to the seabed.

• Spread & Remote sensor - These sensor always work in

pairs, and they measure the distance betwen the trawl doors. You can also use two Remote sensors if you run a twin trawl.

The use of separate communication channels for the individual sensors allows you to use your sensors in the vincinity of other vessels using PI or PS sensors. The communication channels can be defined and/or changed onboard your vessel using a standard computer and the PI Configurator utility.

Related topics

→ More information about the sensors, page 20 → How to use the sensors, page 103

850-165085 / Rev.B

Simrad PI44

Battery chargers

All sensors are power by internal batteries, and these need charging at regular intervals. The Simrad chargers have been designed to allow the sensors to be stored in charging positions whenever they are not used, and “overcharging” will not take place. Either of the two charger types can be used on any of the sensors, but the PI Charger will only provide fast charging on the PI Sensors.

PS30 Charger

Three different Simrad PS30 Chargers are available depending on the vessel’s main power supply; 230 Vac, 110 Vac and +24 Vdc.

PI Charger

The PI Charger will provide fast charging of the new PI sensor series. The Simrad PI Charger requires a +12 to +32 Vdc power supply.

Related topics

→ PI Charger, page 165 → PS30 Charger, page 167

850-165085 / Rev.B

GETTING STARTED

This section contains an brief overview of the basic system operation. If you are a first time user, we recommend that you read through this chapter while operating the PI44 so that you can familiarize yourself with the buttons, menus and display presentations.

In order to navigate the menu structures and display presentations, you need to know the most important buttons.

MENU: Press to access the main menu. Press again to close it. ENT: Press to apply the changes you have requested. Selector pad (circular): Press along the edges to move the

cursor. PAGE: Leaf through the predefined display pages. Each page

can contain one, two or four separate windows. You can have four different presentation pages active simultanously, and use this button to access them.

Getting started

WIN: Press to select active window on the current presentation page. Each page can have one, two or four windows. The active window is identified with a red border.

ADJ: Press to access the setup parameters for the current presentation.

Topics

→ How to switch power on and off, page 10 → Introducing the presentation principles, page 11 → Defining initial presentation pages, page 13 → Introducing the main menu, page 16 → Introducing the keypad, page 17 → Introducing the sensors, page 20

850-165085 / Rev.B

Simrad PI44

How to switch power on and off

Observe the following procedure to switch the PI44 on and off.

Power on

1 Press and hold the PWR button until the display is

switched on.

2 Observe that the start-up page appears. 3 Press ENT to start normal operations.

If you press PAGE you will access the built-in “Quick guide”. Once opened, use the two GAIN buttons to leaf through the pages, and then MENU or ENT to exit. If you wish to access the “Quick guide” later, you can find it on the Setup menu.

When you power up the PI44, it will automatically assume operation using the most recent page mode.

Power off

1 Press the PWR buttontocalluptheLight and power

dialogue.

2 Press and hold the PWR button to switch off the PI44.

850-165085 / Rev.B

Getting started

Introducing the presentation principles

Observe the following description and procedures to understand how the presentation principles apply.

Pages and Windows

The PI44 display is set up with four different presentation pages. You can leaf through these pages by pressing the PAGE button in the lower left corner of the keypad.

Each page can be set up to display one, two or four windows. Each of these windows can then be set up to present the information of your choice.

When you set up a page to contain more than one window, you can select the active window using the WIN button. The active window is identified with a red border.

To set up a presentation page

This procedure explains how to set up a page using the main menu and the WIN button.

1 Press the MENU button to open the main menu. 2 Observe the WIN symbol in the top right corner of the

display.

3 Press the WIN button one or more times to select how

many windows you wish to use on the presentation page, and which window you wish to active.

- The blue fields in the WIN symbol symbolises the page

configuration.

- The information you choose to display during this session will be placed in the corresponding window on the current page.

4 Use the selector tab, and move the cursor to the Fishery

menu.

5 Select one of the options on the menu.

- If a menu option is shown with red print, it means that the information can not be displayed with the currently selected window size. Use the WIN buttontoselecta new window size.

- You can also select the menu option using the corresponding alphanumerical button. You might find that easier to do!

850-165085 / Rev.B

6 Press the ENT button.

- The PI44 will return to the previous page, and the information you chose on the Fishery menu will appear in the selected window.

Simrad PI44

If you change your page configuration from full screen (one window) to two or four windows, you may see that one or more windows will not display any information. If this is the case, observe the procedure below.

To define window information

This procedure explains how to set up the information in a window using the WIN button and the main menu.

1 If your current page contains more than one window, press

the WIN button to select active window.

- The active window is identified by its red border.

2 Press the MENU button to open the main menu. 3 Use the selector tab, and move the cursor to the Fishery

menu.

4 Select one of the options on the menu.

- If a menu option is shown with red print, it means that the information can not be displayed with the currently selected window size. Select an other presentation.

- You can also select the menu option using the corresponding alphanumerical button. You might find that easier to do!

5 Press the ENT button.

- The PI44 will return to the previous page, and the information you chose on the Fishery menu will appear in the selected window.

Window sizes and information

Observe the table below to see which modes that can be used in each window size.

Window size FULL HALF QUARTER

Numeric display -- Yes Yes

Graphic display Yes Yes Yes

Surface temperature Yes -- Yes

Status display Yes -- --

Echo display Yes Ye s Ye s

Pilot display Yes -- Yes

850-165085 / Rev.B

Getting started

Defining initial presentation pages

Observe the following procedure to set up the four display pages on the PI44. The presentations chosen are those commonly used, but using the guidelines in this procedure you can change the content of individual pages to suit your requirements.

Note that although the procedure instructs you to use the Selector pad to make the menu selections, you may find it much easier to access the choices directly using the alphanumerical buttons.

Page 1: Echo sounder

1 Press the MENU button to bring up the main menu. 2 Press the Selector pad to move the cursor (inverse video)

to the ECHO choice on the main menu.

3 Observe the WIN icon at the top right corner of the

display. Press the WIN button repeatidly until the blue rectangle covers the entire icon.

4 On the Echo menu, select Echo 38 kHz. 5 Press the ENT button to enter the choice.

A full screen echo sounder appears. If you already know the basic settings of an echo sounder you can access the Echo quick menu by pressing the ENT button one more time.

Page 2: Numeric display

1 Press the PAGE button once to select the next display

page.

2 Press the MENU button to bring up the main menu. 3 Press the Selector pad to move the cursor (inverse video)

to the Fishery choice on the main menu.

4 Observe the WIN icon at the top right corner of the

display. Press the WIN button repeatidly until the blue rectangle covers the left half of the icon.

5 On the Fishery menu, select Numeric display. 6 Press the ENT button to enter the choice.

850-165085 / Rev.B

The numeric display appears on the left (or right) half of the display page. If you already know how to perform the basic setup, you can access the Numeric setup by pressing the ADJ button.

Simrad PI44

The right side may have been predefined to provide an other display presentation, or it may simply show the text Select display via MENU. In order to fill the space,proceed as follows:

7 Press the WIN button, and observe the red border moving

from one window to the next. Place the border on the window you wish to define.

8 Press the MENU button to access the main menu. 9 Press the Selector pad to move the cursor (inverse video)

to the Echo menu. 10 On the Echo menu, select Echo 200 kHz. 11 Press the ENT button to acknowledge.

The 200 kHz echo sounder will now appear in the chosen window.

Page 3: Graphic display

1 Press the PAGE button once to select the next display

page.

2 Press the MENU button to bring up the main menu. 3 Press the Selector pad to move the cursor (inverse video)

to the FISHERY choice on the main menu. 4 Observe the WIN icon at the top right corner of the

display. Press the WIN button repeatidly until the blue

rectangle covers the entire icon.

5 On the Fishery menu, select Graphic display, Echo 38

kHz. 6 Press the ENT button to enter the choice.

The graphic display appears with the sensor data shown on the top and the echo sounder shown below. If you already know how to set up the basic parameters you can access the Echo quick menu by pressing the ENT button one more time.

Page 4: Navigation display

1 Press the PAGE button once to select the next display

page.

2 Press the MENU button to bring up the main menu. 3 Press the Selector pad to move the cursor (inverse video)

to the PILOT choice on the main menu. 4 Observe the WIN icon at the top right corner of the

display. Press the WIN button repeatidly until the blue

rectangle covers the entire icon.

850-165085 / Rev.B

Getting started

5 On the Pilot menu, select Highway. 6 Press the ENT button to enter the choice.

The navigation display appears. If you already know how to set up the basic parameters you can access the Navigation setup page by pressing the ADJ button.

Leafing through the pages

To leaf through the display presentations you have defined, press the PAGE button.

Related topics

→ Display presentations, page 32

850-165085 / Rev.B

Simrad PI44

Introduction to the main menu

The main menu is located across the top of the display. To open the menu, press the MENU button. Note that if it is left unactivated, the menu will disappear automatically after a few seconds.

Each of the four options of the main menu provide a drop-down menu. On these, you can select which information to view in each display window, or which parameters to define. Main and drop-down menus are highlighted when selected, and the complete main menu title is displayed in the top left-hand corner of the screen.

Observe the WIN icon in the top right corner. Using the WIN button, you can position the information into the selected window on the current page. Note however that setup pages are not affected by the choices you make with the WIN button.

• To open a sub-menu, press the ENT button, press the

corresponding alphanumerical button, or press “down” on the selector tab.

• To make your selection, highlight the choice and press the

ENT button. You can also press the corresponding alphanumerical button.

Related topics

→ The choices on the main menu, page 170

850-165085 / Rev.B

Getting started

Introduction to the keypad

The keypad is used for direct user interface with the PI44 system, and allows you to control the functionality. Note that the majority of the buttons are mainly used only during echo sounder operations, and that some of them will only work when they are enabled by a specific function.

EVENT: This button places a vertical marker on the echo sounder depth display to identify an event.

MENU: This button turns the menu bar on and off. It will also allow you to exit dialogues without applying any changes.

ENT (Enter): This button allows you to apply the changes you have made in a setup dialogue, or to select a function from the menu. This button will also give you access to the “Echo quick menu”, and it will open the setup dialogue for the presentation in the active window.

Selector pad: Use this button to navigate through menus and dialogues. It moves the cursor horizontally by pressing it on the left or right side, and vertically by pressing it on its top or bottom.

-/+: These two button are used to select between available values, scales and ranges. (-) reduces and (+) increases the graduation.

GAIN: The two gain buttons are used to adjust the receiver gain on the echo sounder.

STND (Standard): This button will activate an echo sounder window in Standard mode. If you press this button while an other window is active, the display switches to an echo sounder page. If one of your other pages already contains a full screen echo sounder, the PI44 will automatically change to this page, and you must press the PAGE button to return to your previous page. If you do not have an echo sounder presentation among your four presentation pages, the current presentation will be replaced by the echo sounder presentation.

ADJ (Adjust): This button provides a direct access to the setup parameters for the data in the active window. To exit the setup without making changes, press the MENU button.

850-165085 / Rev.B

VRM (Variable Range Marker): This button provides a horizontal marker line on the echo sounder display. Use the selector pad to alter the depth of the marker. The button will only work if you have an echo sounder presentation on the current page.

Simrad PI44

WIN (Windows): This button is used to select which display window to be active. During normal operation, the active window is identified with a red border. When the main menu is opened, the current active window is shown in the upper right corner of the display.

B-LCK (Bottom lock expansion): This button will activate an echo sounder window, and then expand the area just above the bottom. In the expanded view, the bottom will appear flat. The vertical range of the expansion window is defined in the echo sounder setup. If you press this button while an other window is active, the display switches to an echo sounder page. If one of your other pages already contains a full screen echo sounder, the PI44 will automatically change to this page, and you must press the PAGE button to return to your previous page. If you do not have an echo sounder presentation among your four presentation pages, the current presentation will be replaced by the echo sounder presentation. To switch off this function, press the

STND or SHIFT buttons.

ZOOM: This button will activate an echo sounder window, and

then expand an area above and below a horizontal marker line. The depth of the marker line can be adjusted with the selector pad, while the vertical range of the expansion window is defined in the echo sounder setup. If you press this button while an other window is active, the display switches to an echo sounder page. If one of your other pages already contains a full screen echo sounder, the PI44 will automatically change to this page, and you must press the PAGE button to return to your previous page. If you do not have an echo sounder presentation among your four presentation pages, the current presentation will be replaced by the echo sounder presentation. To switch off htis function, press the STND or SHIFT button.

SHIFT: This button will activate the Phased range echo sounder mode. You can then select start range with the + and buttons, and depth range with the numerical buttons (1 to 9). If you press this button while an other window is active, the display switches to an echo sounder page. If one of your other pages already contains a full screen echo sounder, the PI44 will automatically change to this page, and you must press the PAGE button to return to your previous page. If you do not have an echo sounder presentation among your four presentation pages, the current presentation will be replaced by the echo sounder presentation. T o select Standard mode, press the STND button.

850-165085 / Rev.B

+ 292 hidden pages