Simrad IS 42 instrument, OP 12 autopilot controller Operator Manual

Below you will find brief information for instrument IS 42, autopilot controller OP 12. The IS42 is a networked multifunction instrument that shows data measured by sensors and other equipment connected to the system. The unit calculates speed, wind, trip distance and time, average speed, set and drift. If a compatible autopilot computer is connected to the network, the IS42 will also display autopilot status. The OP12 Autopilot controller controls the autopilot, allowing you to switch between Standby, NoFollow Up, AUTO, Wind and NAV modes.

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IS42

Operator Manual

ENGLISH

www.simrad-yachting.com

Preface

Disclaimer

As Navico is continuously improving this product, we retain the right to make changes to the product at any time which may not be reflected in this version of the manual. Please contact your nearest distributor if you require any further assistance.

It is the owner’s sole responsibility to install and use the equipment in a manner that will not cause accidents, personal injury or property damage. The user of this product is solely responsible for observing safe boating practices.

NAVICO HOLDING AS AND ITS SUBSIDIARIES, BRANCHES AND

AFFILIATES DISCLAIM ALL LIABILITY FOR ANY USE OF THIS PRODUCT

IN A WAY THAT MAY CAUSE ACCIDENTS, DAMAGE OR THAT MAY

VIOLATE THE LAW.

Governing Language: This statement, any instruction manuals, user guides and other information relating to the product

(Documentation) may be translated to, or has been translated from, another language (Translation). In the event of any conflict between any Translation of the Documentation, the English language version of the Documentation will be the official version of the

Documentation.

This manual represents the product as at the time of printing.

Navico Holding AS and its subsidiaries, branches and affiliates reserve the right to make changes to specifications without notice.

Trademarks

Simrad

is used by license from Kongsberg.

NMEA

and NMEA 2000

are registered trademarks of the National

Marine Electronics Association.

Copyright

Warranty

The warranty card is supplied as a separate document.

In case of any queries, refer to the brand website of your display or system: www.simrad-yachting.com.

Preface | IS42 Operator manual

Compliance statements

This equipment complies with:

• CE under EMC directive 2014/30/EU

• The requirements of level 2 devices of the Radio communications

(Electromagnetic Compatibility) standard 2008

The relevant Declaration of conformity is available in the product's section at the following website: www.simrad-yachting.com.

About this manual

This manual is a reference guide for operating the IS42. It assumes that all equipment is installed and configured, and that the system is ready to use.

The manual assumes that the user has basic knowledge of navigation, nautical terminology and practices.

Important text that requires special attention from the reader is emphasized as follows:

Note:

Used to draw the reader’s attention to a comment or some important information.

Warning:

Used when it is necessary to warn personnel that they should proceed carefully to prevent risk of injury and/or damage to equipment/ personnel.

Manual version

This manual is written for software version 1.0. The manual is continually updated to match new software releases. The latest available manual version can be downloaded from www.simradyachting.com.

Preface | IS42 Operator manual

24 Trip log

25 AIS

The AIS page

AIS target symbols

Selecting a target

AIS page display options

Displaying target information

32 Autopilot

Safe operation with the autopilot

Autopilot controller

The autopilot page

Autopilot modes

Using the autopilot in an EVC system

Contents | IS42 Operator manual

Autopilot alarms

Autopilot settings

48 Alarms

Alarm indication

Acknowledging the alarms

Enabling the alarm system and the alarm siren

Alarm history

Alarm limits on analog pages

51 Software setup

65 Maintenance

Preventive maintenance

Cleaning the display unit

Checking the connectors

Software update

68 Menu flow chart

Page menus

Settings menu

71 Technical specification

72 Dimensional drawing

73 Terms and abbreviations

75 Supported data

NMEA 2000 PGN (transmit)

NMEA 2000 PGN (receive)

Contents | IS42 Operator manual

Introduction

The IS42 is a networked multifunction instrument. The display shows data measured by sensors and other equipment connected to the system.

The unit calculates speed, wind, trip distance and time, average speed, set and drift.

If a compatible autopilot computer is connected to the network, the

IS42 will also display autopilot status.

Manuals

The following documentation is available for the IS42 system:

• IS42 Operator manual 988-11199-00n) - this manual

• IS42 Quick guide (988-11204-00n)

• OP12 Autopilot controller User guide (988-11231-00n)

•

AP44/IS42/Triton

Installation guide (988-11229-00n)

•

AP44/IS42/Triton

Mounting template (988-11230-00n)

•

OP12/Triton

Autopilot controller Mounting template

(988-11231-00n)

• NAC-2/NAC-3 Autopilot computer Commissioning manual

(988-11233-00n)

• AC12N/AC42N Installation manual (988-10276-00n)

Note:

The last digit in the part numbers is the document's revision code. The latest version of all documents can be downloaded from the product website on www.simradyachting.com.

Introduction | IS42 Operator manual

Front panel and keys

1 2 3 2 4

Pages key

With no menu active:

• Press to scroll through the enabled data pages

• Press and hold to display a list of enabled pages from where you can select directly the page to display

Menu and dialog operation: Press to return to previous menu level or to exit a dialog.

2 Arrow keys

Press to move up and down in menus and dialogs.

Press to adjust a value.

3 Enter key

Press to select a menu option and to enter the next menu level.

Press to activate/deactivate a menu/dialog option.

4 MENU/Backlight key

Press once to display the page menu.

Double-press to display the Settings menu.

Press and hold to display the Display setup dialog from where you can adjust the display backlight.

Introduction | IS42 Operator manual

Basic operation

Turning the unit on and off

The unit has no power key, and it will be running as long as power is connected to the NMEA 2000 network backbone.

First time startup

When the unit is started for the first time and after a factory reset, the unit displays a setup wizard. Respond to the setup wizard prompts to select some fundamental setup options. These settings can later be changed and further configuration made as described

in "Software setup" on page 51.

Sleep mode

In Sleep mode, the backlight for screen and keys are turned off to save power. The system continues to run in the background.

You select Sleep mode from the Display setup dialog, activated by pressing and holding the MENU key. Switch from Sleep mode to normal operation by a short press on the MENU key.

Operating the menu system

All functions and settings in the unit are available from the menu system, activated by pressing the MENU key from any page.

Not all pages have a page specific menu, but all page menus give access to the Settings menu.

You can also access the Settings menu by double-pressing the

MENU key.

Page menu

Basic operation | IS42 Operator manual

Settings menu

• Use the arrow keys to move up and down in the menus and in the dialogs

• Confirm a selection by pressing the Enter key

• Return to previous menu level by pressing the Pages key

Edit a numeric value

Use the arrow keys to select the entry field

Press the Enter key to turn the field into edit mode

- The left digit starts flashing

Use the arrow keys to set the value for the flashing digit

Press the Enter key to move focus to the next digit

Repeat step 3 and 4 until all digits are set

Press the Enter key to leave edit mode for the selected field

Use the arrow keys to select the Cancel or Save buttons, then press the Enter key to confirm your selection and to close the dialog

Selected field Field in edit mode

Note:

You can at any time press the Pages key to leave a dialog without saving the entries.

Display setup

Basic operation | IS42 Operator manual

The display setup can be adjusted at any time from the Display setup dialog, activated by pressing and holding the MENU key.

The following options are available:

• Backlight level: Adjusts the backlight level from Min (10%) to Max

(100%) in 10% increments

- When the Backlight level field is active, subsequent presses on the MENU key adjusts backlight level in decrements of 30%

• Display group: Defines which network group the unit belongs to

• Night mode: Activates/deactivates the night mode color palette

• Night mode color: Sets the night mode color palette

• Invert day color: Changes the background color for the pages from default black to white

• Sleep: Turns the backlight for screen and keys off to save power

Note:

All changes made to the display setup will apply to all units belonging to the same display group. For more

information about network groups, refer to "Network groups" on page 61.

Display mode

The IS42 unit can be set up as an instrument only, as an autopilot display only, or as a combination of those two display modes.

• Instrument display only: Displays active data pages. The Autopilot page can be one of these data pages

• Autopilot display only: Displays only the autopilot page

Basic operation | IS42 Operator manual

• Autopilot display when engaged: Switches automatically to the

Autopilot page when the autopilot is switched to an automatic mode. When the autopilot is switched to Standby mode the display switches back to the previous page. This behaviour does not require that an Autopilot page is selected as one of the 8 enabled data pages

The Display mode dialog has the following additional options:

• Show MOB: Switches automatically to the MOB page if a Man

Over Board event is triggered from another system on the

network. Refer to "Man Over Board (MOB)" on page 13

Selecting a data page

The IS42 includes 14 predefined data pages, but only 8 of these can be enabled.

For detailed information about pages, refer to "Pages" on page 14.

Two options are available for selecting an enabled page:

• Directly selecting a page

• Scrolling pages

For automatic page scrolling, refer to "Automatic scrolling pages" on page

14.

Directly selecting a page

Press and hold the Pages key to display a list of enabled pages, then:

• use the arrow keys to select the page you want to display

• confirm your selection by pressing the Enter key

If you don't confirm your selection the menu will timeout and the highlighted page will be displayed after 3 seconds.

Scrolling through enabled data pages

Press the Pages key to scroll through the enabled data pages.

Basic operation | IS42 Operator manual

Man Over Board (MOB)

Note:

MOB and AIS-SART will only work with a Simrad

Multifunction Display (MFD) on the network.

If a Man Over Board event is triggered from another system on the network, the instrument automatically switches to the MOB page.

This function can be enabled/disabled from the Display setup

dialog. Refer to "Display mode" on page 11.

The MOB page shows the position, the range and the bearing of the

MOB at the position the MOB function was activated. If the man over board event is activated via an AIS-SART, the MOB position is updated via the AIS-SART signal.

The system continues to display navigational information towards the MOB waypoint until you cancel the navigation from the menu.

Basic operation | IS42 Operator manual

Pages

The IS42 includes 14 predefined data pages.

In addition to these pages there are 13 template pages that can be used for creating user defined pages.

You can have up to 8 pages enabled in the unit. These can be any combination of predefined pages and user defined pages.

Enabling/disabling a page

To make a page available via the Page key you need to ensure it has been selected as one of the eight enabled pages.

Automatic scrolling pages

You can select to let the system automatically scroll through all enabled pages at a defined time interval.

You set the time interval and start the automatic scrolling function from the Pages menu.

Pages | IS42 Operator manual

Predefined pages and template pages

Pre-defined pages

Autopilot status

Highway

Tide

Weather

Template pages

000.0

Full screen

2x1 Grid

2x2 Grid

2x2 Grid Offset ft

Depth history

Basic Speed/Depth

Basic Wind Angle/

Speed

GPS

Composite Wind

3x3 Grid

1 + 3 Digital - bottom

1 + 6 Digital

1 + 3 Digital - side

1 + 4 Digital

AIS

Motoring

Steering

Single Time Plot

Dual Time Plot

Single analog

Analog + 3

2x2 Digital (Engine)

Composite Wind + 3

Pages | IS42 Operator manual

Autopilot status page

Autopilot status. Refer to "Autopilot" on page 32.

Highway page

Navigation information, including a 3D view of the boat position on the track.

Tide page

Tidal information shown relative to the yacht's bow.

Pages | IS42 Operator manual

Weather page

Weather data shown graphically along with environmental data for easy visualization.

The barometer time period can be set to show from 3 hours until 48 hours history. You change the period from the menu or by using the arrow keys.

Depth history page

Current depth and histogram of recorded depth data.

The Depth histogram time period can be set to show 5, 10, 30 or 60 minutes history.

You change the period from the menu or by using the arrow keys.

Pages | IS42 Operator manual

Speed/Depth page

Basic speed and depth. Speed field includes an acceleration bargraph.

Wind Angle speed page

Apparent angle and true wind speed.

The wind angle indicator (1) is red for port and green for starboard tack. The true wind speed field includes a Beaufort scale indicator

(2).

Pages | IS42 Operator manual

GPS page

GPS and navigation information. If not navigating the navigation fields show dashes.

Composite Wind

Easy visualization of wind information.

Apparent wind angle indicator (1) and true wind angle indicator (2).

AIS page

Showing AIS targets within selected range. Refer to "AIS" on page

25.

Pages | IS42 Operator manual

Motoring

Engine information, including analog dial for RPM (1), two dynamic data fields (2), and bars for engine trim (3) and engine temperature

(4).

The dynamic data fields display information in the following priority:

• Priority 1

- SOG

- Speed through water

- Speed (pitot)

• Priority 2

- Depth

• Priority 3

- Vessel fuel economy GPS

- Vessel fuel economy water

• Priority 4

- Vessel fuel rate

The needle color indicates the engine's position: white for center, red for port and green for starboard.

The motoring page can be set up to show one or two engines. Refer

to "Engine setup" on page 63.

Pages | IS42 Operator manual

One engine

Two engines

When two gauges are selected, the data displayed in the dynamic fields are not repeated for the second gauge.

Steering

Navigational data, including an easy visualization of compass heading.

Single time plot

Easy visualization showing current and historical data plotted over a specified time scale.

Pages | IS42 Operator manual

You can change data and time period from the menu.

The time period can also be adjusted by using the arrow keys.

Dual time plot

Easy visualization showing current and historical data plotted over a specified time scale.

You can change data and time period for each of the time plots from the menu.

Configuring data pages

Replacing a page

Any enabled page can be replaced with one of the other predefined pages, or by a template page if you want to create a custom page.

Creating/editing a custom page

A custom page is created in a two steps process:

Pages | IS42 Operator manual

• Replacing one of the active pages with a template page (ref above)

• Selecting data for the template page's field(s)

Note:

If the template page has multiple data fields you use the arrow keys to select active field.

You can later change the data for any fields in a custom page.

Changing the range scale on analog pages

You can change the range scale for some full screen analog pages by pressing the arrow keys.

Note:

If the actual recorded data is greater than the selected analog scale, the analog needle will remain at the highest point on the scale. The digital window in the center of the display will show the actual value.

Missing or faulty data

If a data type is missing or if the data is out of scale, there will be no data reading on the display.

The example shows the basic Depth/Speed page with missing speed information.

Pages | IS42 Operator manual

Trip log

The Trip log is available from the Settings menu.

The Trip log is a temporary page, and you cannot configure this view as one of the user defined pages.

The Trip log remains on the screen until you press the Pages key.

There are three log options available:

• Trip 1: records distance traveled through the water (Log input)

• Trip 2: records distance traveled via GPS input

• Log: shows total distance run from system installation or from a system restore

Note:

Trip 1 requires correctly calibrated boat speed for accurate trip records.

Trip 2 requires a compatible GPS connected to the network.

You start, stop and reset the active Trip log from the menu, activated by pressing the MENU key.

Trip log | IS42 Operator manual

AIS

If a compatible AIS system or an NMEA 2000 VHF that can do AIS

(Automatic Identification System) is connected to the network, then any targets detected by these devices can be displayed on the AIS page. You can also see messages and position from SARTs and

AtoNs within the defined range.

The AIS page

The AIS page shows:

• own vessel in the center of the page

• AIS targets within set range

• AIS mode (A)

AIS

Transmitting mode Silent or receive only mode

• number of displayed icons versus total number of targets (B)

• distance between range rings (C)

• selected range (D).

AIS target symbols

The system uses the AIS target symbols shown below:

Sleeping AIS target (not moving or at anchor).

Moving and safe AIS target with course extension line.

Dangerous AIS target, illustrated with bold line.

A target is defined as dangerous based on the CPA and

TCPA settings. Refer to "Defining dangerous vessels" on page

30.

Lost AIS target.

When no signals have been received within a time limit, a target is defined as lost.

The target symbol represents the last valid position of the target before the reception of data was lost.

AIS | IS42 Operator manual

Selected AIS target, activated by selecting a target symbol.

The target returns to the default target symbol when the cursor is removed from the symbol.

AIS SART (AIS Search And Rescue Transmitter).

Selecting a target

You use the arrow keys to select individual AIS targets on the AIS page. When selected the target symbol change to a selected AIS target symbol.

AIS page display options

The following options are available for displaying the AIS targets:

Range

Defines the display range on the AIS page. Selected range is indicated in the lower right corner of the AIS page.

Icon filters

By default, all targets within the selected range are shown on the

AIS page. You can select to hide safe AIS vessels, and to not show targets based on vessel speed.

Extension lines

Defines the length of course over ground and heading extension lines for your own vessel and for other vessels.

The length of the extension lines is set to indicate the distance the vessel will move in the selected time period.

Your own vessel heading information is read from the active heading sensor, and COG information is received from the active

GPS. For other vessels COG data is included in the message received from the AIS system.

AIS | IS42 Operator manual

Displaying target information

Displaying information for a single target

When a target is selected, you press the Enter key to display detailed information about the selected target.

Target list

The Target list displays basic information for all received AIS targets.

By pressing the MENU key you can sort the target list by the different information. You can also select to include all targets or only dangerous targets in the list.

AIS messages

Receiving a message

A message received from an AIS vessel will immediately be displayed on any page if the Vessel message is turned on in the

Alarm settings dialog. Refer to "Vessel alarms" on page 28.

List of all AIS messages

All received messages are listed in the Message listing, activated by pressing the MENU key when the AIS page is displayed.

Select a message and press the MENU key to display the original message.

AIS | IS42 Operator manual

Calling an AIS vessel

If the system includes a VHF radio supporting DSC (Digital Select

Calling) calls over NMEA 2000, you can initiate a DSC call to other vessels from the IS42.

From the Call dialog you can change channel or cancel the call. The

Call dialog is closed when the connection is established.

AIS SART

When an AIS SART (Search and Rescue beacon) is activated, it starts transmitting its position and identification data. This data is received by your AIS device.

If your AIS receiver is not compliant with AIS SART, it interprets the received AIS SART data as a signal from a standard AIS transmitter.

An icon is positioned on the AIS page, but this icon is an AIS vessel icon. If your AIS receiver is compliant with AIS SART, the following takes place when AIS SART data is received:

• An AIS SART icon is located on the page in the position received from the AIS SART

• An alarm message is displayed if you have enabled the siren, the alarm message is followed by an audible alarm.

Note:

The icon is green if the received AIS SART data is a test and not an active message.

Vessel alarms

You can define several alarms to alert you if a target shows up within predefined range limits, or if a previously identified target is lost.

AIS | IS42 Operator manual

The alarms are activated from the Alarm Settings dialog.

For more information about alarms, refer to "Alarms" on page 48.

Dangerous vessel

Controls whether an alarm will be activated when a vessel comes closer than the distance for CPA within the time limit for TCPA. Refer

to "Defining dangerous vessels" on page 30.

AIS vessel lost

Sets the range for lost vessels. If a vessel is lost within the set range, an alarm occurs.

Note:

The check box controls whether the alarm pop-up box is displayed and if the siren goes on. The CPA and TCPA define when a vessel is dangerous regardless of the enabled or disabled state.

Vessel message

Controls whether an alarm will be activated when a message is received from an AIS target.

AIS | IS42 Operator manual

AIS settings

Defining dangerous vessels

You can define an invisible guard zone around your vessel. When a target comes within the set limits, the symbol changes to the

Dangerous target symbol. An alarm is triggered if activated in the

Alarm settings panel.

Speed and course indication

The extension line can be used to indicate speed and course for targets, either as absolute (true) motion or relative to your vessel.

AIS icon orientation

Sets the orientation of the AIS icon, either based on heading or COG information.

AIS | IS42 Operator manual

Your vessel's MMSI number

Used for entering your own MMSI (Maritime Mobile Service Identity) number into the system. You need to have this number entered to receive addressed messages from AIS and DSC vessels.

AIS | IS42 Operator manual

Autopilot

If a compatible autopilot computer is connected to the system, autopilot functionality is available in the system.

The system does not allow for more than one autopilot computer on the network.

The display unit automatically detects the autopilot computer available on the network and presents settings, configuration and user options for the connected computer.

For details about installing and configuring an autopilot computer, refer to the separate manuals that come with the autopilot computer.

Safe operation with the autopilot

Warning:

An autopilot is a useful navigational aid, but DOES NOT replace a human navigator.

Warning:

Ensure the autopilot has been installed correctly, commissioned and calibrated before use.

Note:

You can disengage the autopilot at any time by pressing the STBY key on the OP12 Autopilot controller.

Do not use automatic steering when:

• In heavy traffic areas or in narrow waters

• In poor visibility or extreme sea conditions

• When in areas where use of an autopilot is prohibited by law

When using an autopilot:

• Do not leave the helm unattended

• Do not place any magnetic material or equipment near the heading sensor used by the autopilot system

• Verify at regular intervals the course and position of the vessel

• Always switch to Standby mode and reduce speed in due time to avoid hazardous situations

Autopilot | IS42 Operator manual

< 10 10 >

< 1 1 >

STBY

MODE

AUTO

5 4 3

Autopilot controller

The autopilot is controlled by the OP12 Autopilot controller.

LED - Mode and alarm indicator

2 Port and starboard keys

In Standby mode: press to activate Non Follow Up mode

(NFU).

In AUTO mode:

• Press a key to change set heading 1° or 10° to port or starboard

• For boat type set to SAIL: Press and hold both port keys or both starboard keys to start a tack/gybe

In NoDrift mode:

• Press a key to change set heading 1° or 10° to port or starboard

In Wind mode:

• Press to change set wind angle 1° or 10° to port or starboard

• Press both 1° keys to start a tack/gybe

3 AUTO key

Press to activate AUTO mode.

MODE key

Note:

Only used when the autopilot is in AUTO or

NoDrift mode.

Press once to select mode:

• For boat type set to SAIL: activates Wind mode (A)

• For other boat type settings: activates NoDrift mode (B)

Press and hold to activate NAV mode (C)

5 STBY key

Press to activate Standby mode.

Autopilot | IS42 Operator manual

Mode and alarm indication

The LED in the Autopilot controller indicates active mode and alarm by the flashing:

• AUTO mode: solid light

• Wind mode: flashing (80% on, 20% off)

• NAV mode; flashing (40% on, 60% off)

• Alarm on the network: rapid flashing

The LED is green in Day mode and red in Night mode

Note:

There is no LED indication for NoDrift and Non-Follow modes.

The autopilot page

The content of the autopilot page varies with active mode. All modes include:

• Response (AC12N/AC42N/SG05) / Profile (NAC-2/NAC-3) mode

(A)

• Heading indicator, analog and digital (B)

• Autopilot mode indication (C)

• Rudder indicator, analog and digital (D)

For more information, refer to the separate mode descriptions and

to the "Terms and abbreviations" on page 73.

Autopilot modes

The autopilot has several steering modes. The number of modes and features within the mode depend on the autopilot computer, the boat type and available inputs, as explained in the description of the following steering modes.

Autopilot | IS42 Operator manual

Standby mode

Standby mode is used when you steer the boat at the helm.

• Switch to Standby mode by pressing the STBY key.

Note:

If you press one of the port or starboard keys while in

Standby mode, the autopilot will switch to Non-Follow Up mode.

Non-Follow Up (NFU) mode

In NFU mode you can use the port and starboard keys on the controller to operate the rudder. The rudder will move as long as the key is pressed.

• Switch to NFU mode by pressing one of the port or starboard keys when the autopilot is in Standby mode.

AUTO mode (Heading hold)

In AUTO mode the autopilot issues rudder commands required to steer the vessel automatically on a set heading. In this mode the autopilot does not compensate for any drifting caused by current and/or wind (A).

• Switch to AUTO mode by pressing the AUTO key. When the mode is activated, the autopilot selects the current boat heading as the set heading.

Changing set heading in AUTO mode

You adjust the set heading by using the port or starboard keys.

Autopilot | IS42 Operator manual

< 10 10 >

< 1 1 >

An immediate heading change takes place. The new heading is maintained until a new heading is set.

Tacking and Gybing in AUTO mode

Tacking and Gybing in AUTO mode uses the heading as reference.

The tacking/gybing operation changes the set heading to port or starboard with a fixed angle.

The tacking parameters are set in the Setup/Sailing parameters: The

Tack angle defines the tacking angle, while the Tack time defines

the rate of turn during the tack/gybe. Refer to "Autopilot settings" on page 41:

• Initiate the Tack or Gybe function to port or starboard by pressing and holding both port keys or both starboard keys on the autopilot controller.

- The turn is started immediately to the direction selected by the keys.

Wind mode

Note:

Wind mode is only available when the boat type is set to

SAIL. It is not possible to activate wind mode if wind information is missing.

When wind mode is engaged, the autopilot captures the current wind angle as steering reference, and adjusts the heading of the boat to maintain this wind angle.

Prior to entering wind mode the autopilot system must be operating in AUTO mode and with valid input from the wind transducer.

• Switch to Wind mode by pressing the MODE key when the autopilot is in AUTO mode.

The autopilot will now keep the boat on the set wind angle until a new mode is selected or a new wind angle is set.

Warning:

In wind mode the autopilot steers to the apparent or true wind angle and not to a compass heading. Any wind shift could result in the vessel steering on an undesired course.

Autopilot | IS42 Operator manual

< 1 1 >

Tacking and Gybing in Wind mode

Tacking and Gybing in Wind mode can be performed when sailing with apparent or true wind as the reference. In either case the true wind angle must be less than 90 degrees (tacking) and more than

120° (gybing).

The tacking/gybing operation will mirror the set wind angle on the opposite tack.

The rate of turn during the tack/gybe is set by the Tack time in the

Setup/Sailing menu. Refer to "Autopilot settings" on page 41.

• Initiate the Tack or Gybe function by pressing both the port and the starboard 1° keys on the autopilot controller.

• Confirm the tack/gybe in the dialog by pressing the AUTO key on the autopilot controller or the Enter key on the IS42.

Note:

The autopilot will temporarily add a 5 degree bear-away on the new tack to allow the boat to pick up speed. After a short period the wind angle will return to the set angle.

Note:

If the Tack/Gybe is not confirmed the dialog will close after 10 seconds, and the requested tack/gybe will not be initiated.

NoDrift mode

Note:

NoDrift mode is not available if the boat type is set to

SAIL.

It is not possible to select NoDrift mode if position and heading information is missing.

In NoDrift mode the vessel is steered along a calculated track line, from present position and in a direction set by the user. If the vessel

Autopilot | IS42 Operator manual

is drifting away from the track line due to current and/or wind (A), the vessel will follow the line with a crab angle.

Prior to entering NoDrift mode the autopilot system must be operating in AUTO mode and with valid input from GPS and heading sensor.

• Switch to NoDrift mode by pressing the MODE key when the autopilot is in AUTO mode

- The autopilot will draw an invisible track line based on current heading from the vessel’s position

The autopilot will now use the position information to calculate the cross track distance, and automatically steer along the calculated track.

Changing set course in NoDrift mode

You adjust the set course by using the port or starboard keys.

An immediate course change takes place. The new course is maintained until a new course is set.

Dodging

Note:

Only available for AC12N/AC42N autopilot computers.

If you need to avoid an obstacle when using NoDrift mode, you can set the autopilot to Standby mode and power steer or use the helm until the obstacle is passed.

If you return to NoDrift mode within 60 seconds you can select to continue on previous set bearing line.

If you do not respond, the dialog disappears and the autopilot goes to NoDrift mode with current heading as set bearing line.

Heading capture

When the vessel is turning in AUTO or NoDrift mode, an instant repress on the AUTO key activates the heading capture function. This will automatically cancel the turn, and the vessel will continue on the heading read from the compass the very moment you pressed the AUTO key.

Autopilot | IS42 Operator manual

NAV mode

Note:

NAV mode requires a compatible chartplotter connected to the network.

It is not possible to select NAV mode if heading information is missing, or if steering information is not received from the external chartplotter.

Warning:

NAV mode should only be used in open waters. Navigation mode must not be used while sailing, as course changes may result in unexpected tacks or gybes!

In NAV mode the autopilot uses steering information from an external chartplotter to direct the vessel to one specific waypoint location, or through a series of waypoints.

In NAV mode, the autopilot's heading sensor is used as heading source for course keeping. Speed information is taken from SOG or from selected speed sensor. The steering information received from the external chartplotter alters the set course to direct the vessel to the destination waypoint.

To obtain satisfactory navigation steering, the autopilot system must have valid input from the chartplotter. Autosteering must be tested and determined satisfactory prior to entering NAV mode.

Note:

If the chartplotter does not transmit a message with bearing to next waypoint, the autopilot will steer using Cross

Track Error (XTE) only. In that case you must revert to AUTO mode at each waypoint and manually change set course to equal bearing to next waypoint and then select NAV mode again.

Prior to entering NAV mode the autopilot system should be operating in AUTO mode. The chartplotter must be navigating a route or towards a waypoint.

• Initiate NAV mode by pressing and holding the MODE key for 3 seconds when the autopilot is in AUTO mode.

• Confirm to switch to NAV mode in the dialog by pressing the

AUTO key on the autopilot controller or the Enter key on the

IS42.

Autopilot | IS42 Operator manual

Turning in NAV mode

When your vessel reaches a waypoint, the autopilot will give an audible warning and display a dialog with the new course information.

There is a user defined limit for the allowed automatic course change to next waypoint in a route. If the course change is more than this set limit, you are prompted to verify that the upcoming course change is acceptable.

• If the required course change to the next waypoint is less than the course change limit, the autopilot will automatically change the course. The dialog will disappear after 8 seconds unless cleared by the Pages key.

• If the required course change to next waypoint is more than the set limit, you are prompted to verify that the upcoming course change is acceptable. If the turn is not accepted, the vessel will continue with the current set heading.

Course change less than set limit Course change larger than set limit

The course change limit setting depends on the autopilot computer:

• NAC-2/NAC-3: Course chg confirm angle, refer to "Steering (NAC-2/

NAC-3)" on page 42

Autopilot | IS42 Operator manual

• AC12N/42N and SG05: Navigation change limit, refer to

"Automatic steering (AC12N/AC42N)" on page 46

Using the autopilot in an EVC system

When the IS42 is connected to an EVC system via the SG05, you can take manual control of the steering regardless of the autopilot mode.

The mode indicator is replaced by a dash to indicate EVC override.

The system returns to IS42 control in Standby mode if no rudder command is given from the EVC system within a predefined period.

Autopilot alarms

You can define several alarms to alert you if the autopilot system or autopilot sensors are failing.

The alarms are activated from the Alarm Settings dialog.

For more information about alarms, refer to "Alarms" on page 48.

Autopilot settings

The autopilot settings can be split between settings done by the user, and settings done during installation and commissioning of the autopilot system.

• User settings can be changed for various operational conditions or user preferences

• Installation settings are defined during commissioning of the autopilot system. No changes should later be done to these settings

Autopilot | IS42 Operator manual

Both user settings and installation settings depends on which autopilot computer that is connected to the system.

The following sections describe the settings that can be changed by the user. The settings are described per autopilot computer.

Installation settings are available in the documentation following the autopilot computers.

NAC-2/NAC-3 Autopilot computer

Steering (NAC-2/NAC-3)

This option allows for manually changing parameters that were set during the commissioning of the autopilot computer. For more details of the settings, refer to the separate documentation for the autopilot computer.

• Low speed / High speed

- Turn rate: The rate the vessel is turning in degrees per minute

- Rudder gain: Ratio between the heading error and the commanded angle

- Counter rudder: Counteracts the effect of the vessel turn rate and inertia

- Autotrim: When the vessel has a constant heading error due to external forces such as wind and current, the Autotrim function corrects for this by building up a constant rudder offset. The

Autotrim value is reset every time the AUTO mode is entered or when a course change greater than approximately 20° is made. Auto trim is automatically disabled during a turn.

- Init rudder: Defines how the system moves the rudder when switching from power steering to an automatic mode.

• Center: Moves the rudder to zero position

• Actual: Maintains the rudder offset

Autopilot | IS42 Operator manual

- Rudder limit: Determines the maximum rudder movement in degrees from midship position that the autopilot can command the rudder in the automatic modes. The Rudder limit setting is only active during autosteering on straight courses, NOT during course changes. Rudder limit does not affect Non-Follow-up steering.

- Off heading limit: Sets the limit for the off heading alarm. An alarm occurs when the actual heading deviates from the set heading more than the selected limit.

- Track response: Defines how fast the autopilot shall respond after having registered a cross track distance

- Track approach angle: Defines the angle used when the vessel is approaching a leg. This setting is used both when you start navigating and when you use track offset.

- Course change confirm angle: Defines the limits for course change to next waypoint in a route. If the course change is more than this set limit, you are prompted to verify that the upcoming course change is acceptable.

Sailing (NAC-2/NAC-3)

Note:

Sailing parameters are only available when the boat type is set to Sail.

• Wind mode: Select what wind function the autopilot will use when in wind mode

- Auto:

If TWA is <70º: Wind mode will use AWA

If TWA is ≥70º: Wind mode will use TWA

- Apparent

- True

• Tack time: Controls the rate of turn (tack time) when performing a tack in wind mode.

• Tack angle: Controls the angle that the boat will tack to between

50º - 150º in AUTO mode

• Manual speed: If neither boat speed or SOG data is available and or deemed reliable a manual value for speed source can be entered and used by the autopilot to aid steering calculations

Autopilot | IS42 Operator manual

AC12N/AC42N Autopilot computer

Response (AC12N/AC42N)

The AC12N/42N includes three different sets of steering modes;

High (HI), Low (LO) and Wind. The mode can be automatically or manually selected.

The speed at which the autopilot automatically changes from LO to

HI parameters (or opposite) is determined by the Transition speed setting, defined during the commissioning of the autopilot. Refer to the detailed description in the autopilot computer's documentation.

You can manually fine tune each of the three response modes.

Level 4 is default with parameter values as set by the autotune function. If no autotune is made (not recommended) the level 4 values are the factory default values.

• A low response level reduces the rudder activity and provides a more “loose” steering

• A high response level increases the rudder activity and provides a more “tight” steering. A too high response level causes the boat to start lazy-s movements.

The Wind response is used on sailboats

• Increase the Wind value if the difference between the set wind angle and the actual wind angle is too big

• Decrease the Wind value if the actual wind angle is S-ing around the set wind angle, or if the rudder activity is too high

The performance mode is indicated in the top left corner of the autopilot page.

• HI-A: High response mode set automatically

Autopilot | IS42 Operator manual

• LO-A: Low response mode set automatically

• HI-M: High response mode set manually

• LO-M: Low response mode set manually

Note:

If no speed input is available the autopilot defaults to LO steering parameters when engaging an automatic mode. This is a safety feature to prevent oversteering

Sea state filter (AC12N/AC42N)

This filter is used to reduce rudder activity and autopilot sensitivity in rough weather.

• OFF: Seastate filter is disabled. This is the default setting.

• AUTO: Reduces rudder activity and autopilot sensitivity in rough weather by an adaptive process. The AUTO setting is recommended if you want to use the seastate filter.

• MANUAL: Linked to the steering response control settings described previously. It may be used to manually find the optimum combination of course keeping and low rudder activity in rough but steady sea conditions.

Sailing (AC12N/AC42N)

Note:

Sailing parameters are only available when the boat type is set to Sail.

• Tack time: Controls the rate of turn (tack time) when performing a tack in wind mode.

• Tack angle: Controls the angle that the boat will tack to between

50º - 150º in AUTO mode

• Wind mode: Select what wind function the autopilot will use when in wind mode

- Auto:

If AWA is ≤60º: Wind mode will use AWA

If AWA is >60º: Wind mode will use TWA

- Apparent

- True

• VMG optimizing: Optimize the VMG to wind. The function will be active for 5–10 minutes after a new wind angle has been set and only when beating.

Autopilot | IS42 Operator manual

• Layline steering: When enabled the Cross Track Error (XTE) from the navigator will keep the boat on the track line. If the XTE from the navigator exceeds 0.15 Nm, the autopilot will calculate the layline and track towards the waypoint.

Automatic steering (AC12N/AC42N)

• Transition speed: This is the speed at which the autopilot will automatically change the steering parameter set from HI to LO parameters, or vice versa. On power boats it is recommended to set the Transition speed to a speed that represents the speed where the hull begins to plane or the speed where you change from slow to cruising speed

On sailboats the Transition speed should be set to 3-4 knots to give the best response in a tack

• High/Low

- Rudder gain: This is the ratio between the heading error and the commanded rudder angle. Low speed requires more rudder gain than high speed

• Too little Rudder gain and the autopilot fails to keep a steady course

• Too much Rudder gain gives unstable steering and reduces speed

- Counter rudder: This parameter counteracts the effect of the vessel turn rate and inertia. The best way of checking the value of the Counter Rudder setting is when making turns.

- Auto trim: When the vessel has a constant heading error due to external forces such as wind and current, the Auto trim function corrects for this by building up a constant rudder offset. The Auto trim value is reset every time the AUTO mode is entered or when a course change greater than approximately 20° is made. Auto trim is automatically disabled during a turn.

- Rate limit: The rate the vessel is turning in degrees per minute.

• Minimum rudder: Some boats may have a tendency of not responding to small rudder commands around the course keeping position because of a small rudder, a rudder deadband,

Autopilot | IS42 Operator manual

whirls/disturbance of the water-stream passing the rudder or it is a single nozzle water jet boat. By manually adjusting the minimum rudder function, the course keeping performance might be improved on some boats. This will however increase the rudder activity.

• Min wind angle starboard / Min wind angle port: This is the minimum apparent wind angle that will keep the sails well shaped and give an acceptable thrust. This parameter will vary from boat to boat. The setting applies for the tack-prevent function. It also applies when the autopilot is operating in

WindNAV mode. You can select different minimum wind angles for port and starboard. The difference between port and starboard will be taken into account when calculating the

Distance To Turn (DTT).

• Navigation change limit: Defines the limits for course change to next waypoint in a route. If the course change is more than this set limit, you are prompted to verify that the upcoming course change is acceptable

SG05 Autopilot computer

The SG05 Autopilot computer offers the same settings as the

AC12N/AC42N Autopilot computers. Refer to "AC12N/AC42N Autopilot

computer" on page 44.

Autopilot | IS42 Operator manual

Alarms

The system continuously checks for dangerous situations and system faults while the system is running. The alarm system can be activated if any alarm settings are exceeded.

Alarm indication

An alarm situation is indicated with an alarm pop-up. If you have enabled the siren, the alarm message is followed by an audible alarm.

A single alarm is displayed with the name of the alarm as the title, and with details for the alarm.

If more than one alarm is activated simultaneously, the alarm popup can display 2 alarms. The alarms are listed in the order they occur with the alarm activated first at the top. The remaining alarms are available in the Alarms dialog.

Type of messages

The messages are classified according to how the reported situation affects your vessel. The following color codes are used:

Color

Red

Orange

Yellow

Blue

Green

Importance

Critical

Important

Standard

Warning

Light warning

Acknowledging the alarms

The most recent alarm is acknowledged by pressing the Enter key.

This removes the alarm notification, and silences the alarm from all units that belong to the same alarm group. A reminder reappears at given intervals for as long as the alarm condition exists.

Note:

An alarm received from non Navico units on the network must be acknowledged on the unit generating the alarm.

Alarms | IS42 Operator manual

Enabling the alarm system and the alarm siren

You enable the alarm system and the alarm siren from the Alarms menu.

Individual alarm settings

You enable/disable the single alarm and set the alarm limits from the Alarms settings dialog.

• Press the Enter key to enable/disable the alarm

• Press the MENU key to show the menu from where you can access the alarm limits

Alarm history

The Alarm history dialog stores alarm messages until they are manually cleared.

Alarms | IS42 Operator manual

You show alarm details for a selected alarm and clear all alarms in the alarm history by pressing the MENU key when the Alarm history dialog is active.

Menu options Alarm details

Alarm limits on analog pages

The analog true wind speed (TWS) and depth full-screen pages indicate the high and low alarm limit settings as red warning zones.

This gives you a visual indication of alarm zones.

True Wind Speed page showing high and low true wind limits

Depth page showing shallow and deep water limits

Alarms | IS42 Operator manual

Software setup

Prior to use, the IS42 requires a number of settings be configured in order for the system to perform as expected. Access to the required options are found in the Settings menu, accessed from the page menu or by pressing the MENU key twice.

Note:

The following settings are described in other sections of this manual:

"Pages" on page 14

"Trip log" on page 24

"Alarms" on page 48

"Autopilot settings" on page 41

"AIS settings" on page 30

Fuel

The fuel utility monitors a vessel's fuel consumption. This information is totaled to indicate trip and seasonal fuel usage, and is used to calculate fuel economy.

To use the utility, a Navico Fuel Flow sensor, or a NMEA 2000 engine adaptor cable/gateway with Navico Fuel Data Storage device must be fitted to the vessel. Neither the Navico Fuel Flow sensor, nor the

Suzuki engine interface require the use of a separate Fuel Storage device. Refer to the engine manufacturer or dealer for information on whether or not your engine provides a data output, and what adaptor is available to connect to NMEA 2000.

To have accurate fuel information the engine setup must be completed, and the fuel sensor must be calibrated according to the

separate documentation following the sensor. Refer to "Engine setup"

on page 63 and to "Sources" on page 58.

Software setup | IS42 Operator manual

Adding fuel

To accurately calculate fuel capacity, fill the tank and select Set to

full in the Refuel dialog.

Fuel used

The fuel Used dialog shows how much fuel has been used since last fill, from trip reset and seasonal usage (continuous recording).

If more than one engine is on the network, then the Fuel Used data shown is the total for all engines. It also lists the data for each engine.

The Reset option in the dialog allows resetting the fuel used data.

You can reset all engines or each engine separately.

Remote displays

Any compatible B&G HV display connected to the network can be configured to show desired data via the IS42.

All HV Displays are listed in the Remote displays dialog. Displays not present on the network are greyed out.

Select the type of display you want to configure

- Connected displays of the selected type are listed

Highlight the display you want to configure

- The HV display itself starts flashing

Press the MENU key to display the options available:

• Select data: Used for defining which data that should be displayed on the selected HV display

• White backlight: Sets the the backlight to white

Software setup | IS42 Operator manual

Note:

This option is not available for the 40/40 HV display

• Display group: Sets the network group for the unit

• Instance: Sets the network instance for the unit

For more information about network groups and instance settings,

refer to "Network" on page 58.

Calibration

Note:

Once the unit is setup and before you proceed with calibration ensure all network sources are selected and

configured. Refer to "System settings" on page 58.

Boat speed

Speed calibration is necessary to compensate for hull shape and paddlewheel location on your boat. For accurate speed and log readings, it is essential that the paddlewheel is calibrated.

SOG reference

This is an auto calibration option that uses speed over ground (SOG) from your GPS, and compares the average of SOG against the average boat speed from the speed sensor for the duration of the calibration run.

Note:

This calibration should be made in calm sea with no effect from wind or tidal current.

• Bring the boat up to cruising speed (above 5 knots), then

• Select the SOG reference option

When the calibration is completed the Boat speed calibration scale will show the adjusted percentage value of the boat speed.

Distance reference

Allows you to calibrate the log via a distance reference. You will need to complete consecutive runs, under power at a constant speed made along a given course and distance.

Note:

The distance should be greater than 0.5 NM, ideally 1 NM.

To eliminate the effect of tidal conditions it is advisable to perform at least two runs, preferably three, along the measured course.

Software setup | IS42 Operator manual

Referring to the diagram, A and B are the markers for each run. X is the actual distance for each run.

• Enter the desired distance in nautical miles that you would like to calculate the distance reference over

• When the boat gets to the predetermined starting position of the distance reference calculation, start the calibration timer

• As the boat passes marks A and B on each run, instruct the system to start and stop and finally OK to end calibration.

A x

Use SOG as boat speed

If boat speed is not available from a paddle wheel sensor, it is possible to use speed over ground from a GPS. SOG will be displayed as boat speed and used in the true wind calculations and the speed log.

Wind

MHU (Masthead unit) alignment

This provides an off set calibration in degrees to compensate for any mechanical misalignment between the masthead unit and the center line of the vessel.

To check the masthead unit alignment error we recommend you use the following method which involves a sailing trial:

• Sail on a starboard tack on a close hauled course and record the wind angle, then repeat the process on a port tack

• Divide the difference between the two recorded numbers and enter this as the wind angle off set

If the starboard apparent wind angle is greater than the port angle, then divide the difference by 2 and enter this as a negative offset.

Software setup | IS42 Operator manual

If the port angle is greater than the starboard then divide the difference by 2 and enter this as a positive offset.

Enter the offset it into the MHU Align calibration field.

Depth

Depth offset

All transducers measure water depth from the transducer to the bottom. As a result, water depth readings do not account for the distance from the transducer to the lowest point of the boat (for example; bottom of the keel, rudder, or propeller) in the water or from the transducer to the water surface.

• For depth below keel (A): Set the distance from transducer to the bottom of the keel as a negative value. For example, -2.0.

• For depth below transducer (B): no offset required.

• For depth below surface (waterline) (C): Set the distance from transducer to the surface as a positive value. For example,+0.5.

-2.0

+0.0

+0.5

A B C

Aft depth offset

This option allows the system to display two depth readings.

The Aft depth is calibrated in the same manner as the Depth offset.

Note:

Aft Depth is only available when a valid signal is received from a second and compatible NMEA 2000 or NMEA 0183 device.

Software setup | IS42 Operator manual

030˚

20%

030˚

Heading

Note:

All magnetic compasses must be calibrated to ensure correct heading reference.

The calibration must be made on the active compass.

The calibration should be done in calm sea conditions and with minimal wind and current to obtain good results.

Offset

The Offset option is used for compensating for any difference between the boat’s center line (A) and the compass lubber line (B).

Find the bearing from the boat position to a visible object. Use a chart or a chart plotter

Steer the boat so that the center line of the boat is aligned with the bearing line pointing towards the object.

Change the offset parameter so that the bearing to the object and the compass readout becomes equal.

Note:

Make sure that both the compass heading and the bearing to the object have the same unit (°M or °T).

User triggered calibration

Note:

Before the calibration is started, make sure that there is enough open water around the vessel to make a full turn.

The Calibrate option is used for manually starting the heading calibration procedure.

During this calibration, the compass measures the magnitude and direction of the local magnetic field.

The illustration shows magnitude of local field in percentage of earth's magnetic field (A), direction of local field (B) with respect to the boat's centerline (C).

Follow the on-screen instruction, and use about 60-90 seconds to make a full circle. Keep turning until the system reports a pass.

• If the local magnetic field is stronger than the earth’s magnetic field (the local field is reading more than 100%), the compass calibration will fail.

• If the local field is reading more than 30%, you should look for any interfering magnetic objects and remove them, or you

Software setup | IS42 Operator manual

should move the compass to a different location. The (local) field angle guides you to the local interfering magnetic object.

Note:

In certain areas and at high latitudes the local magnetic interference becomes more significant, and heading errors exceeding ±3° may have to be accepted.

Automatic calibration

The Auto calibrate option is used for compasses that offers a fully automatic calibration procedure.

See more instructions in the documentation delivered with your compass.

Magnetic variation

Defines how magnetic variation is handled by the system.

• Auto: Receives variation data from a network source

• Manual: Used for manually entering a value for the magnetic variation

Use COG as heading

If heading data is not available from a compass sensor, it is possible to use COG from a GPS. COG will be used in the true wind calculations.

Note:

The autopilot cannot be operated using COG as the heading source. COG cannot be calculated when stationary.

Pitch/Roll

If a suitable sensor is fitted, the system will monitor the inclination of the vessel. The offset value should be entered to adjust the readings so that while the vessel is stationary at the dock, the Pitch and Roll value reads 0.

Environment

If a suitable sensor is fitted, the system will monitor the current sea/air temperature and barometric pressure.

The offset value to be entered should adjust the reading from the sensor to match a calibrated source.

Software setup | IS42 Operator manual

Rudder

Starts the automatic calibration of the rudder feedback. This procedure sets the correct relationship between the physical rudder movement and the rudder angle readout.

Follow the instructions on the display to perform the rudder feedback calibration procedure.

Advanced

This option is used for manually applying an offset to the displayed data for third party sensors which cannot be calibrated through the

IS42.

Damping

If data appears erratic or too sensitive, damping may be applied to make the information appear more stable. With damping set to off, the data is presented in raw form with no damping applied.

Note:

Damping settings are applied to units belonging to the

same damping group. Refer to "Network groups" on page 61.

System settings

Network

Sources

Data sources provide live data to the system.

The data may originate from modules internal to the unit (for example internal GPS or sonar), or external modules connected to the NMEA 2000 or via NMEA 0183 if available on the unit.

When a device is connected to more than one source providing the same data, the user can choose the preferred source. Before commencing with source selection make sure all external devices and the NMEA 2000 backbone are connected and are turned on.

• Auto select: Looks for all sources connected to the device. If more than one source is available for each data type, selection is made from an internal priority list. This option is suitable for the majority of installations.

Software setup | IS42 Operator manual

• Manual source selection: Manual selection is generally only required where there is more than one source for the same data, and the automatically selected source is not the one desired.

Device list

The Device list shows the devices that provide data. This may include a module inside the unit, or any external NMEA 2000 device.

Selecting a device in this list will bring up additional details and actions:

All devices allow allocation of an instance number in the configure option. Set unique instance numbers on any identical devices on the network to allow for the unit to distinguish between them. The data option shows all data being output by the device. Some devices will show additional options specific to the device.

Note:

Setting the instance number on a 3rd party product is typically not possible.

Diagnostics

The NMEA 2000 tab on the diagnostics page can provide information useful for identifying an issue with the network.

Software setup | IS42 Operator manual

Note:

The following information may not always indicate an issue that can be simply resolved with minor adjustment to network layout or connected devices and their activity on the network. However, Rx and Tx errors are most likely indicating issues with the physical network, which may be resolved by correcting termination, reducing backbone or drop lengths, or reducing the number of network nodes (devices).

Bus state

Simply indicates whether the bus is powered, but not necessarily connected to any data sources. However, if bus shows as ‘off’, but power is present along with an increasing error count, it is possible that termination or cable topology is incorrect.

Rx Overflows

The unit received too many messages for its buffer before the application could read them.

Rx Overruns

The unit contained too many messages for its buffer before the driver could read them.

Rx/Tx Errors

These two numbers increase when there are error messages, and decrease when messages are received successfully. These (unlike the other values) are not a cumulative count. Under normal operation these should be at 0. Values around 96 upwards indicate a heavily error prone network. If these numbers go too high for a given device, it will automatically drop off the bus.

Rx/Tx Messages

Shows actual traffic in and out of device.

Bus Load

A high value here indicates network is near full capacity. Some devices automatically adjust rate of transmission, if network traffic is heavy.

Fast Packet Errors

Cumulative counter of any fast packet error. This could be a missed frame, or a frame out of sequence etc. NMEA 2000 PGNs are made

Software setup | IS42 Operator manual

of up to 32 frames. The entire message will be discarded when a frame is missed.

Note:

Rx and Tx Errors often indicate an issue with the physical network, which may be resolved by correcting termination, reducing backbone or drop lengths, or reducing the number of network nodes (devices).

Network groups

The Network Group function is used to control parameter settings, either globally or in groups of units. The function is used on larger vessels where several units are connected to the network. By assigning several units to the same group, a parameter update on one unit will have the same effect on the rest of the group members.

Units

Provides setup of units of measure used on various data types.

Decimal places

Defines number of decimals used for speed and sea temperature.

Key beeps

Controls the loudness of the beep sound when a key is pressed.

Default setting: Loud

Language

Controls the language used on this unit for panels, menus, and dialogs. Changing the language causes the unit to restart.

Time

Controls the local time zone offset, and the format of the time and date.

Display setup

Displays the Display setup dialog.

The following options are available:

Software setup | IS42 Operator manual

• Backlight level: Adjusts the backlight level from Min (10%) to Max

(100%) in 10% increments

- When the Backlight level field is active, subsequent presses on the backlight key adjusts backlight level in decrements of 30%

• Display group: Defines which network group the unit belongs to

• Night mode: Activates/deactivates the night mode color palette

• Night mode color: Sets the night mode color palette

• Invert day color: Changes the background color for the pages from default black to white

• Sleep: Turns the backlight for screen and keys off to save power

Display mode

The IS42 unit can set up as an instrument only, as an autopilot display only, or as a combination of those two display modes.

• Instrument display only: Displays active data pages. The Autopilot page can be one of these data pages

• Autopilot display only: Displays only the autopilot page

• Autopilot display when engaged: Switches automatically to the

The Display mode dialog have the following additional options:

Software setup | IS42 Operator manual

• Show MOB: Switches automatically to the MOB page if a Man

Over Board event is triggered from another system on the

network. Refer to "Man Over Board (MOB)" on page 13

Files

File management system. Used to browse the contents of the unit's internal memory and the content of a device plugged into the unit's

USB port.

Simulate

Runs the display with simulated data. Use the simulator to become familiar with your unit before using it on the water.

When activated, the simulator mode is indicated on the display.

Restore defaults

Allows you to select which settings are to be restored to their original factory settings.

Engine setup

Vessel setup

Set the number of engines, fuel tanks and total fuel capacity.

Engine display setup

A maximum of two engine’s data can be shown on each gauge.

The Engine display setup defines which engine’s data should be displayed on a gauge if you have more than 2 engines.

Gauge limits

Sets the RPM and vessel fuel rate limits.

Note:

These limits are a visual guide on the data pages. They do not set any alarms.

Global reset

Resets the source selection on all displays connected to the network.

Software setup | IS42 Operator manual

About

Displays copyright information, software version, and technical information for this unit.

Software setup | IS42 Operator manual

Maintenance

Preventive maintenance

The unit does not contain any field serviceable components.

Therefore, the operator is required to perform only a very limited amount of preventative maintenance.

It is recommended that you always fit the supplied protective sun cover when the unit is not in use.

Cleaning the display unit

A proper cleaning cloth should be used to clean the screen, where possible. Use plenty of water to dissolve and take away salt remains.

Crystalized salt may scratch the coating if using a damp cloth. Apply minimal pressure to the screen.

Where marks on the screen cannot be removed by the cloth alone, use a 50/50 mixture of warm water and isopropyl alcohol to clean the screen. Avoid any contact with solvents (acetone, mineral turpentine, etc.), or ammonia based cleaning products, as they may damage the anti-glare layer or plastic bezel.

To prevent UV damage to the plastic bezel, it is recommended that the sun cover be fitted when the unit is not in use for an extended period.

Checking the connectors

The connectors should be checked by visual inspection only.

Push the connector plugs into the connector. If the connector plugs are equipped with a lock, ensure that it is in the correct position.

Software update

The IS42 includes a USB port of the back of the units. You use this port for software updates.

You can update the software for the IS42 unit itself and for NMEA

2000 sensors connected to the network from the IS42.

You can check the units software version from the About dialog.

Maintenance | IS42 Operator manual

The software version for connected NMEA 2000 sensors is available in the Device list.

The latest software is available for download from our website: www.simrad-yachting.com.

Software update for the unit

Download the latest software from our website: www.simradyachting.com, and save it to a USB device

Insert the USB device to the IS42 unit, and restart the IS42 unit

- The upgrade will now start automatically the upgrade procedure for all units

Remove the USB device when the update is completed.

Warning:

Do not remove the USB device until the update is completed. Removing the USB device before the update is completed may damage the unit.

Maintenance | IS42 Operator manual

Software update for remote devices

Download the latest software from our website: www.simradyachting.com, and save it to a USB device

Insert the USB device to the IS42 unit

Start the File explorer, and select the update file on the USB device

Start the update from the file details dialog

Remove the USB device when the update is completed.

Maintenance | IS42 Operator manual

Menu flow chart

The system includes two menu categories: Page menus and

Settings menu.

Each page has a Page menu, accessed by pressing the MENU key once. The page menu includes basic functions for that panel. All page menus include access to the Settings menu.

The Settings menu is accessed from the page menus or by pressing the MENU key twice. The Settings menu gives access to settings for the sensors, the vessel and for the system.

Page menu, Depth history page Settings menu

Page menus

Each page has a page menu, accessed by pressing the MENU key.

If relevant, the page menu includes basic functions for that panel.

All page menus include access to the Settings dialog.

Settings menu

Level 1

Pages

Fuel

Level 2

Pages...

AutoScroll

AutoScroll time

Refuel

Fuel Used

Menu flow chart | IS42 Operator manual

Level 1

Remote displays

Calibration

Damping

Trip log

Alarms

Menu flow chart | IS42 Operator manual

Level 2

10/10 displays...

20/20 displays...

30/30 displays...

40/40 displays...

Boat speed...

Wind...

Depth...

Heading...

Roll/Pitch...

Environment...

Rudder...

Advanced...

Heading

Apparent wind

True wind

Boat speed

SOG

COG

Attitude Roll

Attitude Pitch

Tide

Trip 1...

Trip 2...

Log...

Active Alarms...

Alarm history...

Alarm settings...

Engine Alarm Settings...

Alarm enabled

Siren Enabled

Level 1

Autopilot, NAC-2 and NAC-3

* Refer to the NAC-2/NAC-3

Commissioning manual

(988-11233-00n)

Autopilot, AC12N/AC42N

Level 2

Steering

Sailing

Installation *

** Refer to the AC12N/AC42N

Installation manual

(988-10276-00n)

AIS

System

Response

Sea state filter

Sailing

Automatic steering

Installation **

Dangerous vessels...

Speed and course

AIS icon orientation

MMSI...

Network

Units

Decimal places

Key beeps

Language

Time...

Display Setup...

Display mode...

Files

Simulate

Restore defaults...

Engine setup

Global reset...

About

Menu flow chart | IS42 Operator manual

Technical specification

Dimensions

Weight

Power consumption

Refer to "Dimensional drawing" on page 72

0.32 kg (0.7 lbs)

1.8 Watts

Key backlight off 0.54 W

Network load

Color

Display

Key backlight max 1.35 W

3 LEN

Black

Size 4.1" (diagonal). 4:3 Aspect ratio

Type

Transmissive TFT-LCD. White

LED backlight

Resolution 320 x 240 pixels

Illumination

White for day mode. Red, green, blue or white for night mode

Environmental protection

Waterproof rating IPx7

Humidity 100% RH

Temperature

Operating -25° to +65ºC (-13°F to +149 ºF)

Storage -40° to +85ºC (-40°F to +185 ºF)

Technical specification | IS42 Operator manual

Dimensional drawing

118 mm (4.64")

8 mm

(0.31")

36.5 mm

(1.43")

28.5 mm

(1.12")

97.5 mm (3.83")

Dimensional drawing | IS42 Operator manual

Terms and abbreviations

This list shows terms and abbreviations used in the pages and in dialogs in the IS42 system.

AIR TEMP

AIS

Air temperature

Automatic Identification System

AVG SPD Average speed

ETW

GLONASS

GMDSS

GNSS

GPS

HDG

LL DIST

LL TIME m

COG

CTS

DGPS

DTW

DSC

EPFS

EPIRB

ETA

AWA

AWS

BSPD

BTW

BWW

Apparent wind angle

Apparent wind speed

Boat speed

Bearing to waypoint

Bearing Waypoint To Waypoint

Course Over Ground

Course To Steer

Differential Gps

Distance to next waypoint

Digital Selective Calling

Electronic Position Fixing System

Emergency Position Indicating Radio Beacon

Estimated Time Of Arrival

Estimated time of arrival to next waypoint

Global Orbiting Navigation Satellite System

Global Maritime Distress And Safety System

Global Navigation Satellite System

Global Positioning System

Heading

Kilometer

Knots

Layline distance

Layline time

Meters

Terms and abbreviations | IS42 Operator manual

TWA

TWD

TWS

WOL

WOP

WPT

STBD

STW

TCPA

TGT

TIME LOC

TRK

TRK CRS

WPT BRG

WPT DIST

XTE

POS

RNG

ROT

RTE

SAR

SOG

SPD

MAX SPD

MIN

MOB

OPP HDG

Maximum speed

Minimum

Man Over Board

Nautical Mile

Heading on opposite tack

Position

Relative Motion

Range

Rate Of Turn

Route

Search And Rescue

Speed Over Ground

Speed

Starboard

Speed Through Water

Time To Closest Point Of Approach

Target

Local time

True Motion

Track

Track course to next waypoint

True wind angle

True wind direction

True wind speed

Wheel Over Line

Wheel Over Point

Waypoint name

Bearing to waypoint

Distance to waypoint

Cross track error

Terms and abbreviations | IS42 Operator manual

Supported data

NMEA 2000 PGN (transmit)

59904 ISO Request

60928 ISO Address Claim

126208 ISO Command Group Function

126996 Product Info

127258 Magnetic Variation

NMEA 2000 PGN (receive)

59392 ISO Acknowledgement

59904 ISO Request

60928 ISO Address Claim

126208 ISO Command Group Function

126992 System Time

126996 Product Info

127237 Heading/Track Control

127245 Rudder

127250 Vessel Heading

127251 Rate of Turn

127257 Attitude

127258 Magnetic Variation

127488 Engine Parameters, Rapid Update

127489 Engine Parameters, Dynamic

127493 Transmission Parameters, Dynamic

127505 Fluid Level

127508 Battery Status

128259 Speed, Water referenced

128267 Water Depth

Supported data | IS42 Operator manual

128275 Distance Log

129025 Position, Rapid Update

129026 COG & SOG, Rapid Update

129029 GNSS Position Data

129033 Time & Date

129038 AIS Class A Position Report

129039 AIS Class B Position Report

129040 AIS Class B Extended Position Report

129041 AIS aids to Navigation

129283 Cross Track Error

129284 Navigation Data

129283 Cross Track Error

129284 Navigation Data

129539 GNSS DOPs

129540 GNSS Sats in View

129794 AIS Class A Static and Voyage Related Data

129801 AIS Addressed Safety Related Message

129802 AIS Safety Related Broadcast Message

129808 DSC Call Information

129809 AIS Class B “CS” Static Data Report, Part A

129810 AIS Class B “CS” Static Data Report, Part B

130074 Route and WP Service - WP List - WP Name & Position

130306 Wind Data

130310 Environmental Parameters

130311 Environmental Parameters

130312 Temperature

130313 Humidity

130314 Actual Pressure

130576 Small Craft Status

130577 Direction Data

Supported data | IS42 Operator manual

Index | IS42 Operator manual

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Key features

Networked multifunction instrument
Calculates speed, wind, trip distance and time
Displays autopilot status
Controls autopilot modes
Provides heading, speed and wind information

Frequently asked questions

The IS42 displays speed, wind, trip distance and time, average speed, set and drift. It also displays autopilot status if a compatible autopilot computer is connected.

The OP12 controller offers Standby, NoFollow Up, AUTO, Wind and NAV modes for controlling the autopilot.

You can adjust the set heading by using the port or starboard keys on the OP12 controller. The new heading is maintained until a new heading is set.