simrad is12 - nuovamarea.comnuovamarea.com/files/product manuals/simrad/is12 system.pdf · is12...

Simrad IS12Instrument System

M A N U A L

IS12 Instrument System

IV Part no. E04820 Issue 1.0 1-Dec-05 WP

The technical data, information and illustrations contained in this publication were to the best of ourknowledge correct at the time of going to print. We reserve the right to change specifications, equipment,installation and maintenance instructions without notice as part of our policy of continuous developmentand improvement.

No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form,electronic or otherwise, without prior permission from Simrad Ltd.No liability can be accepted for any inaccuracies or omissions in the publication, although every care hasbeen taken to make it as complete and accurate as possible.

© 2005 Simrad Ltd

Instruction Manual

VE04820 Issue 1.0

Part I - INTRODUCTION1 GENERAL

1.2 About this manual .................................................................. 111.2 The IS12 instrument range .................................................... 121.3 The IS12 network system ...................................................... 14

Part II - IS12 COMBI2 OPERATION

2.1 General .................................................................................. 152.2 Depth display ......................................................................... 152.3 Depth alarms .......................................................................... 152.4 Speed display ......................................................................... 162.5 Log display ............................................................................ 162.6 Trip Log ................................................................................. 172.7 Water temperature .................................................................. 172.8 Average speed ........................................................................ 172.9 Maximum speed .................................................................... 172.10 Race timer ............................................................................ 17

2.10.1 Pausing the timer ....................................................... 182.10.2 Resetting the timer ..................................................... 18

2.11 Backlighting .......................................................................... 18

3 CALIBRATION 3.1 Selecting units ....................................................................... 193.2 Damping ................................................................................ 193.3 Depth offset ........................................................................... 19

3.3.1 Keel offset .................................................................... 203.3.2 Waterline offset ............................................................ 20

3.4 Switching the depth transducer off/on .................................. 203.5 Speed sensor calibration ........................................................ 21

3.5.1 Percentage correction ................................................... 213.5.2 “Measured mile” .......................................................... 22

3.6 Setting countdown timer ....................................................... 223.7 Local & network backlighting ............................................... 23

4 INSTALLATION4.1 Refer to Part X

Part III - IS12 DEPTH5 OPERATION

5.1 General .................................................................................. 255.2 Water depth ............................................................................ 255.3 Alarms .................................................................................... 25

5.3.1 Shallow alarm .............................................................. 265.3.2 Deep alarm ................................................................... 26

5.4 Info key .................................................................................. 275.5 Backlighting .......................................................................... 27

IS12 INSTRUMENT SYSTEM


VI E04820 Issue 1.0

6 CALIBRATION6.1 Selecting units ....................................................................... 286.2 Damping ................................................................................ 286.3 Offset ..................................................................................... 29

6.3.1 Keel offset .................................................................... 296.3.2 Waterline offset ............................................................ 30

6.4 Switching the transducer off/on ............................................ 306.5 Local & network backlighting ............................................... 30


Part IV - IS12 SPEED/LOG8 OPERATION

8.1 General .................................................................................. 338.2 Boat speed ............................................................................. 338.3 Log display ............................................................................ 338.4 Trip log .................................................................................. 338.5 Water temperature .................................................................. 348.6 Average speed ........................................................................ 348.7 Maximum speed .................................................................... 348.8 Race timer .............................................................................. 34

8.8.1 Pausing the timer ......................................................... 358.8.2 Resetting the timer ....................................................... 35

8.9 Backlighting .......................................................................... 35

9 CALIBRATION9.1 Selecting units ....................................................................... 369.2 Damping ................................................................................ 379.3 Speed sensor calibration ........................................................ 37

9.1.1 Percentage correction ................................................... 379.1.2 “Measured mile” .......................................................... 38

9.4 Setting race countdown time ................................................. 399.5 Local & network backlighting ............................................... 39


Part V - IS12 WIND 11 OPERATION

11.1 General ................................................................................. 4111.2 Apparent wind angle ............................................................ 4111.3 Apparent wind speed ........................................................... 4211.4 High wind alarm .................................................................. 4211.5 True wind angle & wind speed ............................................ 4211.6 Digital close-hauled display ................................................ 4311.7 Backlighting ......................................................................... 44

Instruction Manual

VIIE04820 Issue 1.0

12 CALIBRATION 12.1 Selecting units ..................................................................... 4512.2 Transducer orientation ......................................................... 4512.3 Wind angle offset ................................................................. 4512.4 Configuring the IS12 Wind on SimNet ............................... 4512.5 Local & network backlighting ............................................. 47


Part VI - IS12 COMPASS 14 OPERATION

14.1 General ................................................................................ 4914.2 Compass display .................................................................. 4914.3 Compass lock mode ............................................................ 4914.4 Backlighting ........................................................................ 50

15 CALIBRATION 15.1 Damping .............................................................................. 5115.2 Adjusting transducer orientation ......................................... 5115.3 Compass angle offset ........................................................... 5215.4 Transducer calibration ......................................................... 5215.5 Magnetic/true heading ......................................................... 5315.6 Magnetic variation ............................................................... 5415.7 Configuring the IS12 Compass on SimNet ......................... 5415.8 Local & network backlighting ............................................. 55


Part VII - IS12 DATA17 OPERATION

17.1 General ................................................................................ 5717.2 Upper Info display ............................................................... 5717.3 Lower Info display .............................................................. 5817.4 Page display ......................................................................... 5817.5 NMEA sentences ................................................................. 5917.5 Backlighting ........................................................................ 59

18 CALIBRATION 18.1 Page configuration ............................................................... 6018.2 Configuring the IS12 Data on SimNet ................................ 6118.3 Local & network backlighting ............................................. 63



VIII E04820 Issue 1.0

Part VIII - IS12 MEGA 20 OPERATION

20.1 General ................................................................................ 6520.2 Data page information ......................................................... 66

20.2.1 Calibration and settings ............................................. 6620.2.2 Display units .............................................................. 6720.2.3 Information required .................................................. 6720.2.4 Canceling alarms ........................................................ 6720.2.5 Apparent & true wind angle ...................................... 6720.2.6 VMG (Velocity Made Good) ..................................... 6820.2.7 XTE (Cross Track Error) ........................................... 68

20.3 Backlighting ........................................................................ 69

21 CALIBRATION 21.1 Units .................................................................................... 7021.2 Page configuration ............................................................... 7021.3 Operation modes .................................................................. 70

21.3.1 IS12 mode (Mode 1) .................................................. 7021.3.2 NMEA mode (Mode 2) .............................................. 7121.3.3 Data required .............................................................. 7221.3.4 NMEA sentences ........................................................ 74

21.4 Local & network backlighting.............................................. 7421.5 Configuring the IS12 Mega on SimNet ............................... 75


Part IX - IS12 REMOTE CONTROL 23 OPERATION

23.1 General ................................................................................ 7723.2 Selecting display .................................................................. 7723.3 Keypad configuration .......................................................... 7823.4 Canceling alarms ................................................................. 78

24 CALIBRATION 24.1 Disabling remote control ..................................................... 7924.2 Re-enabling control on rear-mounted instruments .............. 80

25 INSTALLATION 25.1 Installation ........................................................................... 8125.2 Electrical installation ........................................................... 8225.3 Unclipping the Remote Control .......................................... 82

Instruction Manual

IXE04820 Issue 1.0

Part X - IS12 INSTALLATION26 INSTRUMENT HEAD

26.1 General ................................................................................ 8326.1.1 Front mounting .......................................................... 8326.1.2 Rear mounting ............................................................ 84

27 TRANSDUCER27.1 IS12 Speed and IS12 Depth transducer installation ............ 8427.2 IS12 Wind transducer installation ....................................... 84

27.2.1 Running the cable ...................................................... 8427.2.2 Fitting the masthead bracket ...................................... 8527.2.3 Assembling the transducer ......................................... 8527.2.4 Attaching/removing the transducer ............................ 86

27.3 Compass transducer installation .......................................... 87

28 ELECTRICAL28.1 Connecting IS12 instruments .............................................. 88

28.1.1 IS12 Combi (Depth/Speed) ........................................ 8828.1.2 IS12 Depth ................................................................. 8828.1.3 IS12 Speed/Log .......................................................... 8928.1.4 IS12 Wind .................................................................. 8928.1.5 IS12 Compass (NMEA In) ........................................ 8928.1.6 IS12 Data (NMEA Out) ............................................ 9028.1.7 IS12 Mega .................................................................. 90

28.2 Electronic interference suppression ..................................... 9128.3 Magnetic interference .......................................................... 91

29 IS12 NETWORK29.1 Installing an IS12 network .................................................. 92

29.1.1 Network termination .................................................. 92

PART XI – IS12 APPENDIX30 APPENDIX

30.1 Troubleshooting ................................................................... 9530.2 Spares & accessories ........................................................... 9630.3 Dimensions .......................................................................... 9730.4 Specification ........................................................................ 9830.5 Service & warranty .............................................................. 98

Instruction Manual

11E04820 Issue 1.0

Intro

du

ction

Part I

INTRODUCTION

1 GENERALThe Simrad IS12 Instrument System is a flexible, modular seriesof instruments that offer large, clear displays, easy-to-operatefunctions, and robust, weatherproof construction.

Whether as stand-alone instrument or as part of a networkednavigation system, the IS12 will offer superb performance. Allfunctions are easily accessed, thanks to the IS12’s intuitive, userfriendly control system.

Thank you for choosing Simrad!

If you are pleased with your instrument, we hope you will beinterested in our range of marine electronic equipment, which ismanufactured to the same high standards as IS12. Please contactyour nearest Simrad agent for a catalog showing our increasingrange of high-tech navigational instruments, GPS, autopilots,Radar, Fishfinders, and VHF radio sets.

Simrad operate a policy of continual development and reservethe right to alter and improve the specification of their productswithout notice.

1.1 About this manualThe manual includes eight IS12 instruments and has been splitinto operation and calibration information for each instrument.Common functions are described in the chapters on installa-tion, and additional information is provided in the appendix.The exception to this is the Remote Control which includesoperation, calibration, and installation in a single chapter.

IS12 Instrument System • Part I – Introduction

12 E04820 Issue 1.0

Intr

odu

ctio

n 1.2 The IS12 instrument rangeIS12 CombiA versatile instrument that combines the functionality of theseparate Depth and Speed displays in a single display. Depthand speed measurements are presented in an easy to read two-line format and additional information such as log, race timerand water temperature can be displayed at the press of a button.The system comes complete with through-hull depth and speedtransducers.

IS12 DepthThe IS12 Depth instrument features keel and waterline offsetoptions together with shallow and deep alarms for safer naviga-tion. Depths are displayed in large characters on a high con-trast, backlit LCD making it easy to read by day or night. TheIS12 Depth instrument comes complete with a through-hulldepth transducer. The depth system can be easily disabled whennot required to avoid interference with other electronics such asfishfinders.

IS12 Speed/LogIn addition to accurate measurement of boat speed the IS12Speed/Log offers a many functions including a built-in racetimer, cumulative and trip logs, and water temperature.Information is displayed on its large single line, backlit LCDmaking it easily read by day or night. The system comes sup-plied with a through-hull transducer with self sealing valve thataids removal of the transducer for cleaning.

IS12 WindAn instrument packed full of features, measuring apparent windspeed and angle with a high wind alarm. When boat speedinformation is available from a speed or combi instrument, theIS12 Wind can also display true wind speed and angle. With ahigh visibility, backlit analogue display and integrated LCD, itis easy to read by day or night. The IS12 Wind system comescomplete with an easy mount masthead transducer and 30m oflightweight transducer cable.

IS12 CompassHaving a large high visibility, backlit analogue display with anintegrated LCD, the IS12 compass displays the boats currentheading as either True or Magnetic. The device also features alock to bearing function in which the display shows the devia-tion from a pre-selected heading. The system is supplied com-plete with a fluxgate compass transducer that is easily connect-ed to any convenient port on the data network.

Instruction Manual

IS12 DataThe IS12 Data instrument is a versatile unit that repeats datafrom the network and displays it in an easy to read two-line for-mat. Each line can be independently selected at the touch of abutton and pages can even be customized so that the most fre-quently used are most rapidly accessible. The IS12 Data alsoconverts network information to NMEA0183 format for easyexport to other devices.

IS12 MegaThe IS12 Mega is an extremely flexible instrument that:

• Repeats information from both Simrad network devices and third party NMEA0183 devices.

• Converts Simrad instrument data to NMEA0183 format• Converts NMEA0183 navigation data to Simrad data

format

A single button press scrolls the display through 32 informationpages and any unused pages can be switched off so that fre-quently used pages can be accessed most quickly. The informa-tion is displayed in large characters which are easy to read evenfrom a distance.

IS12 Remote Control/AlarmThe IS12 Remote Controller/Alarm can be used to control all ofthe major functions of any IS12 instrument on the same net-work, including calibration and alarms functions. This meansthat all instruments, no matter where they are located, can becontrolled from any convenient position. It can be used either asa handheld device or fixed to the dash.

13E04820 Issue 1.0

Intro

du

ction

IS12 Instrument System • Part I – Introduction

14 E04820 Issue 1.0

Intr

odu

ctio

n

Additional instruments can be added to the system to act asrepeaters; for example, at the chart table of a sailboat or the flybridgeof a powerboat. Thus, as shown in the example above, the Mega andData Repeater instruments repeat the information from the maininstruments.

1.3 The IS12 network systemThe IS12 system is built around Simrad’s proprietary high-speedbus networking system SimNet. This allows instruments to beeasily interconnected and share data.

All units are interconnected and powered using a standard singlecable (Fig 1.2).

SPEED/LOG

REMOTECONTROL

DEPTH COMPASS

DATAMEGA WIND

WIND Tx

COMPASS Tx

Fig 1.2 - Example of an IS12 network system set-up

Part II

IS12 COMBI

2 OPERATION2.1 General

As well as displaying depth and boat speed in whichever units youprefer, the IS12 Combi offers a host of additional features. Depthoffsets, shallow and deep alarms and start timers are all adjustable,and additional information such as water temperature, cumulativelog, trip log and race times are easily displayed at the press of abutton.

2.2 Depth displayWhen the IS12 Combi is switched on, the current water depth isshown on the top line of the display (Fig 2.1).The digits show the water depth below the boat. In this example,the depth is displayed in meters (M).

Instruction Manual

15E04820 Issue 1.0

Co

mb

i

COMBI

LIGHT ALARMTIMER

UPPERINFO

HKts

DEPTH

SPEED

FTM

Fig 2.1 - Default Combi display

Note As a default, the Combi will display the depth below the transducer.An offset can be entered so that the display shows either the depthbelow the keel or the waterline depth..

➞ Refer to section 3.3 for information on how to program akeel or waterline offset.

2.3 Depth alarmsThe IS12 Combi features an audible alarm function that can beset to alert if the water depth falls below or rises above a specifiedvalue. The shallow alarm will sound if the water depth fallsbelow a specified amount, to warn if the boat is about to run

LOWERINFO

IS12 Instrument System • Part II – IS12 Combi

16 E04820 Issue 1.0

Co

mb

i

aground and the deep alarm will sound if the water depth goesabove a specified amount.

Note This function can also be used as a navigation tool whennavigating using depth contours – by setting the shallow anddepth alarms below and above the required contour depth,the alarm will sound if the boat strays off the contour.

To access the depth alarms press the UPPER INFO key oncefor the shallow alarm and twice for the deep alarm (Fig 2.2).The display shows the current alarm setting (default is “OFF”).While the alarm is on, the icon will be shown in the topright-hand corner of the display.

To adjust the alarm settings, select the shallow or deep alarmusing the UPPER INFO key and press ALARM TIMER. Thedisplay shows four icons ( ) on the bottom line (Fig 2.3).If the alarm is OFF, pressing the or (ALARM TIMER orUPPER INFO) keys will switch on the alarm at the previouslyentered value (min. 0.6m/2ft, max. 100m/328ft).

Press or to adjust the alarm in 0.1 m or 1 ft increments.

Press and hold or to scroll up and down in 1 m or 10 ftincrements.

Press (LIGHT) to turn the alarm off. Press (LOWERINFO) to confirm and exit.

If the alarm sounds, press ALARM TIMER to acknowledgeand cancel.

Note If no key is pressed within 5 seconds, the display will exit to themain screen and any changes will be ignored.

Note The deep alarm cannot be set lower than the shallow alarm, andthe shallow alarm cannot be set higher than the deep alarm.

2.4 Speed displayWhen the IS12 Combi is switched on, the current boat speed isshown on the bottom line of the display. The display shows theboat speed through the water.

2.5 Log displayThe Log is a non-resettable record of distance traveled, similarto the odometer on a motor vehicle. To display the Log reading,press the LOWER INFO key once.

Fig 2.3 - Adjustingalarm settings

COMBI

LIGHT LOWERINFO

KTS

DEPTH

SPEED

M

DEEP

UPPERINFO

ALARM TIMER

Fig 2.2 - Depth alarms

COMBI

LIGHT LOWERINFO

ALARM TIMER

KTS

DEPTH

SPEED

M

SHALL

UPPERINFO

Instruction Manual

17E04820 Issue 1.0

Co

mb

i

2.6 Trip LogAresettable Trip Log is available by pressing the LOWER INFO keytwice. The Trip log shows the distance traveled since it was last reset. Toreset the Trip log back to zero, press the ALARM TIMER key.

Note The Trip Log can only be reset while the Trip Log is being displayed,and is automatically reset when the instrument is switched off.

➞ The Log and Trip can be displayed in Nautical miles orkilometers (see the Units Calibration menu, section 3.1).

2.7 Water temperatureThe water temperature can be displayed by pressing the LOWERINFO key again while in the Trip Log display (or pressing LOWERINFO three times from the default display).

➞ The water temperature can be displayed in Centigrade orFahrenheit (see the Units Calibration menu, section 3.1).

2.8 Average speedThe average speed (“AVSPEED”) is calculated using the mean boatspeed taken over the time that the Combi has been switched on. PressLOWER INFO once from the water temperature display, or pressLOWER INFO four times from the default display to show averagespeed.

Note The display will change back to the default display after 5 secs.

2.9 Maximum speedThe maximum speed (“MX SPEED”) is the highest boat speedmeasured by the Combi. Press LOWER INFO five times fromthe default display to show maximum speed.


2.10 Race timerThe Race timer function acts both as a race start countdown timer andan elapsed time display. To access the timer, press LOWER INFO sixtimes from the default display.

Note The countdown is factory preset to 6 minutes, the standard race startwarning time as specified under the CHS2000 regulations. However,this can be changed in the calibration menu (see section 3.6 for moredetails).

To start the timer, press the ALARM TIMER key.

Once the timer has been started, the LOWER INFO key can bepressed to display other information—the timer will continue to run


18 E04820 Issue 1.0

Co

mb

i

in the background—pressing ALARM TIMER will switch to thetimer display.When the countdown timer reaches 0:10, the instrument willstarting beeping for each second of the countdown. When thetimer reaches 0:00 the instrument will sound a long beepindicating the start of the race, then the timer will start tocount up, recording the elapsed time.

2.10.1 Pausing the timerTo pause the countdown or elapsed timer, press the ALARMTIMER key. To continue, press ALARM TIMER again.

2.10.2 Resetting the timerTo reset the timer, press and hold the ALARM TIMER key.

2.11 BacklightingThe backlighting illuminates the display and the keys, with fivelevels of brightness.

To switch the backlighting on, press the LIGHT key. The displaywill illuminate and the large digits will show the current lightinglevel (Fig 2.4) - Press the (UPPER INFO) key to increasethe brightness (max 5), (ALARM TIMER) to decrease it(min 1), (LOWER INFO) to accept the selected brightnessor (LIGHT) to turn the backlighting off.

Note While the backlighting is on, the lamp icon ( ) will be shown on the bottom left of the display.

➞The backlighting can either be Local or Network controlled. Localcontrol means that any adjustments to lighting will only affect thisspecific instrument. With Network control, all instruments in the networkwill be affected. See Section 3.7 for more details.

3 CALIBRATIONTo protect the calibration functions, these are held in a hiddenmenu. To enter Calibration mode, press and hold the LIGHTkey (Fig 3.1).

Once in Calibration mode, pressing the (ALARM TIMER)and (UPPER INFO) keys will cycle through the availablecalibration options:

• Units (section 3.1)• Damping (section 3.2)• Depth offset (section 3.3)• Depth transducer on/off (section 3.4)

Fig 3.1 - EnteringCalibration mode

LIGHT

COMBI

ALARMTIMER

UPPERINFO

LOWERINFO

COMBI

LIGHT ALARMTIMER

UPPERINFO

LOWERINFO

Fig 2.4 - AdjustingBacklighting

Instruction Manual

19E04820 Issue 1.0

Co

mb

i

• Speed sensor calibration (section 3.5)• Setting race countdown time (section 3.6)• Local/network backlighting (section 3.7)• Disabling remote control facility (section 24.1)

Note To exit Calibration mode at any point, press and hold (LIGHT).

3.1 Selecting unitsEnter Calibration mode and press (LOWER INFO). Thedepth units can then be selected (meters, feet) using the and

keys. Press to set the selected depth units.

The speed units can then be selected (knots, kmh, mph) bypressing the or key (Fig 3.2). Press to set the selectedspeed units.

Next, the distance units can then be selected (Nm, km). Again,use the and keys to select, then press to set.

The top digits will then show the temperature units (Centigradeor Fahrenheit). Use the and keys to select, then press toset. The unit will then return to the main Calibration menu.

3.2 DampingThe damping function adjusts the update rate of the display. Adamping level of 0 (minimum) will cause the display to updaterapidly, while a damping level of 4 (maximum) will result in amore stable display, but one that is less frequently updated.

Enter Calibration mode, press once (the display will show“CAL DPG”) and press (LOWER INFO). The dampinglevel can be adjusted using the and keys (Fig 3.3).

To set the selected damping level, press . The display willthen return to the main Calibration menu.

3.3 Depth offsetAs a default, the Depth Sounder displays the water depthbetween the transducer and the sea bed.

However, for boats such as sailing yachts with a keel, it is moreuseful for the display to show the available water below thekeel, which is sometimes as much as 2m (6.5ft) below thetransducer. In other circumstances it may be more important toshow the waterline depth, that is the total depth of water fromthe bottom to the surface.

Fig 3.2 - Selectingspeed units

Fig 3.3 - Adjusting damping

INFOLIGHT

COMBI

UPPERINFO

ALARMTIMER

or

INFOLIGHT TIMER RESET

or

KTSK M H


20 E04820 Issue 1.0

Co

mb

i

The IS12 Depth Sounder allows a keel or waterline offset to beentered, so that the displayed depth will more accurately reflectthe depth of water available beneath the boat.

To calculate the offset amount, measure the vertical distancebetween the bottom of the keel and the bottom of the transducerfor a keel offset, or the vertical distance between the surface ofthe water and the bottom of the transducer for a waterline offset(Fig 3.4).

Fig 3.4 - Depth offset

Dep

th b

elow

tran

sduc

er

Dep

th b

elow

keel

Wat

erlin

e D

epth

Kee

lO

ffset

Wat

erlin

eO

ffset

Note The offset amount will be in the same units as selected insection 3.1.

To enter the offset, enter Calibration mode then press twice(the display will show “CAL OFST”) and press . The currentoffset will be displayed – the default value is 0.0.

3.3.1 Keel offsetSince entering a keel offset is reducing the displayed depth, thisis entered using the key, which will adjust the offset in 0.1m/ 0.1ftdecrements. To confirm the selected keel offset, press . Thedisplay will then return to the main Calibration menu.

3.3.2 Waterline offsetA waterline offset increases the displayed depth, this is enteredusing the key and adjusts the offset in 0.1m/0.1ft increments.Confirm the selected waterline offset by pressing . The displaywill then return to the main Calibration menu.

3.4 Switching the depth transducer off/onIf the boat is also fitted with a fishfinder running at a differentfrequency, there may be some interference between the two

depth transducers. In this case, the transducer can be switchedoff. This is also useful to conserve power when on a long oceancrossing, where the Depth Sounder is not needed.Enter Calibration mode, press three times (the display willshow “CAL TRAN”) and press .

The display will show “ON”. To turn the transducer off, pressthe or key (the display will show “OFF”), then press toconfirm. The display will then return to the main Calibrationmenu. While the transducer is set to off, the main depth displaywill show “OFF”. To turn the transducer back on again repeatthe above procedure.

3.5 Speed sensor calibrationWhen the IS12 Combi is first installed, it is important thatthe speed sensor is calibrated properly, as different boats withdifferent hull shapes and characteristics can give a slightlydifferent speed reading to the actual speed through the water.

Enter Calibration mode, press four times (the display willshow “CAL SPD”) and press . Two speed calibration optionsare then available by pressing or .

The first option is calibration by percentage correction (section3.5.1), which can be performed at the dockside or at sea. Thesecond is calibration by “measured mile” (section 3.5.2), whichmust be performed at sea. Either one of these can be used tocalibrate the Speed Log.

3.5.1 Percentage correctionThis method can be used if the displayed speed and the actualspeed vary by a certain ratio. For example:

Actual Boat Speed = 6ktsDisplayed Boat Speed = 5kts

Error = x 100 = 120%

Therefore, a percentage correction of 120% must be entered:Select the “ ” option in the Speed Cal menu and press .

The display will show the current boat speed and correctionpercentage on the display.

Use the and keys to adjust the percentage correction to therequired level and press to set. The display will then returnto the main Calibration menu.

Instruction Manual

21E04820 Issue 1.0

Co

mb

i

ActualDisplayed

Select the “LEG1” option in the Speed Cal menu. Do not pressat this point.

The display will show “– – –” and “LEG1” (Fig 3.6). Whenthe boat reaches the start of the measured distance, press the key – the display will show “RUN”. Press the key to cancelthe calibration at any point.

At the end of the measured distance run, press . The displaywill show “END”. To calibrate the log based on the Leg 1 runonly press again – the display will then exit to the main Calibrationmenu.

To re-run Leg 1 again, press or to select “LEG1” andrepeat the above procedure.

For maximum accuracy, the run should be repeated in theopposite direction – press or to select “LEG2” (Fig 3.7)and repeat the above procedure.

At the end of Leg 2 press to calibrate the log as an averageof the two Legs and return to the main Calibration menu.

Note The measured distance used in the calibration procedure willdepend on the units selected (see section 3.1).

- If distance units are Nm, then measured distance is 1Nm.- If distance units are Km, then measured distance is 1Km.

3.6 Setting countdown timeAlthough the countdown timer is set at 6 minutes, which is therecognized countdown time as specified in the CHS2000 racing


22 E04820 Issue 1.0

Co

mb

i

3.5.2 “Measured mile”This procedure automatically calibrates the speed sensor by measuringthe average time to cover a known distance and com-paring thiswith the time it should have taken to cover this distance at the measuredboat speed (Fig 3.5). The error is automatically calculated and usedto adjust the speed sensor data.

Fig 3.7 - Selecting Leg 2 of a measured

distance run

COMBI

LIGHT ALARM TIMER

LOWERINFO

UPPERINFO

Fig 3.5 - Calibrating boat speed over measured mile

Measured Boat Speed is comparedto the Calculated Boat Speed overa measured distance

Fig 3.6 - “Measuredmile” calibration display

LIGHT INFOTIMER RESET

COMBI

regulations, this can be changed to any value (in 1-minincrements) between 1 min and 9 min 59 secs (max). Toenter Calibration mode, press five times (the display willshow “CAL C’DN”) and press (LOWER INFO).

The countdown time can be adjusted using the and keys.

To set the selected countdown, press . The display will thenreturn to the main Calibration menu.

3.7 Local & Network BacklightingThe backlighting can either be local or network controlled.Local control means that any adjustments to lighting will onlyaffect this specific instrument. With network control, allinstruments in the network will be affected. The IS12instruments are set to network lighting by default.

Note The IS12 instruments are set to Networked lighting as default.

Enter calibration mode, press x 6 (the display will showCAL LIGHT) and press (LOWER INFO).

The top line will show the current setting - NET for Networked orLOC for Local. The setting can be changed using the or keys. To set the selected backlighting, press . The display willthen return to the main calibration menu.

Note Press to exit to the main calibration menu at any point.

Note Any changes will affect this specific instrument only.

4 INSTALLATIONRefer to Part X

Instruction Manual

23E04820 Issue 1.0

Co

mb

i

Instruction Manual

25E04820 Issue 1.0

Part III

IS12 DEPTH


As well as displaying depth in whichever units you prefer, theIS12 depth instrument offers additional, easy to use featuressuch as depth offsets and shallow and deep alarms. The IS12depth also has large buttons for ease of use and a dimmablebacklit display for night sailing.

5.2 Water depthOn power up, the current water depth is shown (Fig 5.1).

In this example, the depth is displayed in meters (M). Thearrow in the top line of the display indicates the trend (▲ or ▼).

As a default, the Depth Sounder will display the depth belowthe transducer. An offset can be entered so that the displayshows either the depth below the keel or the waterline depth.

➞ Refer to section 6.3 for more details about depth offsets.

5.3 AlarmsThe IS12 Depth Sounder features an audible alarm functionthat can be set to alert if the water depth falls below or risesabove a specified value. This is a useful function to avoid theboat running aground in shallow water or straying into deepwater.

LIGHT SHALL

DEPTHDEPTH

M

DEEP INFO

Dep

th

Fig 5.1 - Default Depth display

IS12 Instrument System • Part III – IS12 Depth Sounder

26 E04820 Issue 1.0

Dep

th

Note The alarms will sound for 15 seconds when triggered by thealarm condition (unless manually muted), then sound againafter a 15-second pause and continue in this pattern until thewater depth is once again within the specified parameters.

5.3.1 Shallow alarmThe shallow alarm will sound if the water depth falls below aspecified amount, to warn if the boat is about to run aground.Press the SHALL key to access the shallow alarm (Fig 5.2). Ifthe shallow alarm is “OFF”, pressing the or (SHALL orDEEP) keys will switch on the alarm at the previously enteredvalue (min 0.6m/2ft, max 100m/327ft).

Use the or to adjust the shallow alarm setting in 0.1 m or1 ft increments and press (INFO) to confirm and exit to themain screen. Press and hold the or keys to scroll up anddown in 1m/10ft increments.

If the alarm sounds, press SHALL to acknowledge and cancel.

Note While the alarm is on, the icon will be shown on the display.


Pressing (LIGHT) will disable the shallow alarm.

5.3.2 Deep alarmThe deep alarm will sound if the water depth goes above a specifiedamount. Press the DEEP key to access the deep alarm (Fig 5.3).If the deep alarm is OFF, pressing the or (SHALL or DEEP)keys will switch on the alarm at the previously entered value (min.0.6m/2ft, max. 100m/327ft).

Use the or keys to adjust the deep alarm setting in 0.1m or1ft increments and press (INFO) to confirm and exit to themain screen. Press and hold the and keys to scroll up anddown in 1m/10ft increments.

If the alarm sounds, press DEEP to acknowledge and cancel.

Note While the alarm is on, the icon will be shown on the display.


Note The deep alarm cannot be set lower than the shallow alarm, andthe shallow alarm cannot be set higher than the deep alarm.

Pressing (LIGHT) will disable the deep alarm.

Fig 5.3 - Deep alarm function

SHALL

DEPTH

DEEP

LIGHT INFO

M

DEEP

Fig 5.2 - Shallow alarm function

SHALL

DEPTH

SHALL

LIGHT DEEP INFO

M

5.4 Info keyPressing the INFO key will cycle through the information thatcan be shown on the top line of the display (Fig 5.4).

- Default (“DEPTH”)

- Shallow alarm setting (“SH”)- Deep alarm setting (“DP”)

The selected information will be displayed permanently on thetop line until the INFO key is pressed again.

5.5 BacklightingThe backlighting illuminates the display and the keys, withfive levels of brightness.

To switch the backlighting on, press the LIGHT key. Thedisplay will illuminate and the large digits will show thecurrent lighting level (Fig 5.5) - Four icons will be shownon the bottom line of the display, corresponding to the fourkeys ( , , and ) Press the (DEEP) key to increasethe brightness (max 5), (SHALL) to decrease it (min 1),

(INFO) to accept the selected brightness or (LIGHT)to turn the backlighting off.

The currently selected lighting level will be applied if nokey is pressed after five seconds.


➞ The backlighting can either be Local or Network controlled. Localcontrol means that any adjustments to lighting will only affect thisspecific instrument. With Network control, all instruments in the networkwill be affected. See section 6.5 for more details.

DEPTH

LIGHT SHALL DEEP INFO

Dep

th

Instruction Manual

27

Fig 5.4 - Info key functions

SHALLLIGHT INFODEEP

DEPTH

SH 1.5

DEPTH

DP 45.0

Fig 5.5 - Adjustingbacklighting

LIGHT

DEEP INFOSHALLLIGHT


28 E04820 Issue 1.0

Dep

th

6 CALIBRATIONTo protect the calibration functions, these are held in a hiddenmenu. To enter Calibration mode, press and hold the LIGHTkey (Fig 6.1). In Calibration mode, pressing the (SHALL) or

(DEEP) keys will cycle through the available options:

• Units (section 6.1)• Damping (section 6.2)• Depth offset (section 6.3)• Transducer off/on (section 6.4)• Local/network backlighting (section 6.5)• Disabling remote control facility (section 24.1)

Select the required option and press to enter. While in thecalibration options mode, the following key functions apply:

- To save settings and return to the Cal menu press .- To ignore changes and return to the Cal menu press .- To exit Calibration mode at any time press and hold .

6.1 Selecting unitsEnter Calibration mode – the display will show “UNITS CAL”.Press (INFO). The depth units can then be selected (metersor feet) by pressing the or keys. Press to set the selecteddepth units.

Note Press to exit to the main Calibration menu without changesbeing saved.


Enter Calibration mode, press once (the display will show“DAMP CAL”) and press (INFO). The damping level can beadjusted using the (SHALL) and (DEEP) keys (Fig 6.2).


Fig 6.2 - Adjustingdamping level

LIGHT SHALL DEEP

DEPTH

DAMP

INFO


LIGHT INFOSHALL DEEP

DEPTH

UNITS

Note The offset amount will be in the same units as selected in section 6.1.

To enter the offset, enter Calibration mode then press twice(the display will show “OFFST CAL”) and press . The currentoffset will be displayed – the default value is 0.0.

6.3.1 Keel offsetSince entering a keel offset is reducing the displayed depth, thisis entered using the key, which will adjust the offset in 0.1m/ 0.1ftdecrements. The display will show “KEEL” (Fig 6.4).

To set the selected keel offset, press . The display will thenreturn to the main Calibration menu.

Instruction Manual

29E04820 Issue 1.0

Dep

th

6.3 Depth OffsetAs a default, the Depth Sounder displays the water depth betweenthe transducer and the sea bed. However, for boats such as sailingyachts with a keel it is more useful for the display to show theavailable water below the keel, which is sometimes as much as 2m(6.5ft) below the transducer.

In other circumstances it may be more important to show the waterlinedepth, that is the total depth of water from the bottom to the surface.

The IS12 Depth Sounder allows a keel or waterline offset to beentered, so that the displayed depth will more accurately reflect thedepth of water available beneath the boat.

To calculate the offset amount, measure the vertical distance betweenthe bottom of the keel and the bottom of the transducer for a keel offset,or the vertical distance between the surface of the water and the bottomof the transducer for a waterline offset (Fig 6.3).

Fig 6.4 - Entering keel offset

SHALLLIGHT DEEP INFO

M

KEEL

Fig 9.3 - Depth offset

Dep

th b

elow

tran

sduc

er

Dep

th b

elow

keel

Wat

erlin

e D

epth

Kee

lO

ffset

Wat

erlin

eO

ffset


30 E04820 Issue 1.0

Dep

th

6.3.2 Waterline offsetA waterline offset increases the displayed depth and this can be

entered using the key, which adjusts the offset in 0.1m/0.1ft

increments. The display will show “W’LN” (Fig 6.5).

To set the selected waterline offset, press . The display will

then return to the main Calibration menu.

6.4 Switching the transducer off/onIf the boat is also fitted with a fishfinder running at a similar

frequency, there may be some interference between the two

transducers. In this case, the transducer can be switched off.

This is also useful to conserve power when on a long ocean

crossing, where the depth sounder is not needed.

Enter Calibration mode, press three times (the display will

show “TRANS CAL”) and press . The display will show

“ON”. To turn the transducer off, press the or key (the

display will show “OFF”) and press to confirm (Fig 6.6).

The display will then return to the main Calibration menu.

While the transducer is set to off, the main depth display will

show “OFF”. To turn the transducer back on again, repeat the

above procedure.

6.5 Local/Network backlightingThe backlighting can either be local or network controlled.

Local control means that any adjustments to lighting will only

affect this specific instrument. With network control, all

instruments in the network will be affected.

Note The IS12 instruments are set to network lighting by default.

To enter Calibration mode, press four times (the display will

show “LIGHT” on the top line) and press (INFO).

The large digits will show the current setting: “NET” for

networked or “LOC” for local. The setting can be changed

DEPTH

LIGHT INFO

Fig 6.6 - Switchingthe transducer off

TRANS

SHALL DEEP

LIGHT SHALL DEEP INFO

Fig 6.5 - Entering waterline offset

SHALLLIGHT DEEP INFO

MW’LN

Instruction Manual

31E04820 Issue 1.0

Dep

th

using the or keys. To set the selected backlighting mode,

press . The display will then return to the main menu.

Note Press to exit to the main Calibration menu at any point.

Note Any changes will affect the specific instrument only.


Instruction Manual

33E04820 Issue 1.0

Sp

eed

/Lo

g

Part IV

IS12 SPEED/LOG


As well as displaying the boats speed in whichever units youprefer, the IS12 speed/log is packed full of features. A racingtimer showing both countdown and elapsed times, maximumand average speeds, also additional information such as watertemperature, cumulative log and trip log. The IS12 Speed/Loghas large buttons for ease of use with a large one line, fullydimmable backlit display, making it easy to read during bothday and night time sailing.

8.2 Boat speedWhen the IS12 Speed Log is switched on, the display will showthe current boat speed (Fig 8.1).

INFO

Fig 8.1 - Default Speed display

The main digits show the boat speed through the water. In thisexample, the speed is displayed in Knots (KTS). The arrow inthe top line of the display indicates the speed trend (▲ or ▼).

8.3 Log displayThe Log is a non-resettable record of distance traveled, similarto the odometer on a motor vehicle. To display the Log reading,press the INFO key once.

8.4 Trip logA resettable Trip log is also available, by pressing the INFOkey again from the Log display (or pressing INFO twice from

KTS

SPEED

SPEED

LIGHT TIMER RESET

IS12 Instrument System • Part IV – IS12 Speed/Log

34 E04820 Issue 1.0

Sp

eed

/Lo

g

the default display). The Trip log shows the distance traveledsince it was last reset.To reset the Trip log, press the RESET key.

Note The Trip log can only be manually reset while in the Trip logdisplay screen; it is automatically reset when the instrument isswitched off.

Note The Log and Trip log can be displayed in Nautical miles (Nm)or kilometers (KMH), as selected in the Units Calibration menu(see section 9.1).

8.5 Water temperatureThe water temperature can be displayed by pressing the INFOkey again while in the Trip log display (or pressing INFO threetimes from the default display).

Note The water temperature can be displayed in Centigrade orFahrenheit, as selected in the Units Calibration menu (seesection 9.1).

8.6 Average speedThe average speed (“AVSPD”) is calculated using the meanboat speed taken over the time the Speed log has been switchedon. Press INFO once from the water temperature display (orpress INFO four times from the default display) to show theaverage speed.


While the average speed is being displayed, it can be reset bypressing the RESET key.

8.7 Maximum speedThe maximum speed (“MXSPD”) is the highest boat speed measuredwhile the Speed log has been switched on. Press INFO five timesfrom the default display to show the maximum speed.


While the maximum speed is being displayed, it can be reset bypressing the RESET key.

8.8 Race timerThe Race timer function acts both as a race start countdowntimer and an elapsed time display. To access the Timer press theTIMER key (or INFO six times) from the default display.

Instruction Manual

35E04820 Issue 1.0

Sp

eed

/Lo

g

Note The countdown is factory preset to 6 minutes, the standard racestart warning time as specified under the CHS2000 regulations.However, this can be changed in the Calibration menu (seesection 9.4 for more details).

To start the timer, press the TIMER key again. Once the timerhas been started, the INFO key can be pressed to display otherinformation – the timer will continue to run in the background.The default display will show the timer in the top line of thedisplay, allowing both the boat speed and timer to be displayedsimultaneously.

Note Pressing TIMER will switch the timer to the large digits.

When the countdown timer reaches 0:10, the instrument willstart beeping for each second of the countdown. When thetimer reaches 0:00 the instrument will sound a long beepindicating the start of the race, then the timer will start tocount up, recording the elapsed time.

Note When the countdown reaches zero, the display will alwayschange to the timer/boatspeed split display. Pressing TIMERwill display the elapsed time on the large digits.

8.8.1 Pausing the timerTo pause the countdown or elapsed timer press TIMER once toenter the timer screen, then press TIMER again. The displaywill show “STOP”. To continue, press TIMER again.

8.8.2 Resetting the timerTo reset the timer back to the countdown start (default 6 minutes),press the RESET key.


To switch the backlighting on, press the LIGHT key. The displaywill illuminate and the large digits will show the current lightinglevel (Fig 8.2).Four icons will be shown on the bottom line of the display,corresponding to the four keys ( , , and ) Press the (RESET) key to increase the brightness (max 5), (TIMER)to decrease it (min 1), (INFO) to accept the selected brightnessor (LIGHT) to turn the backlighting off.

SPEED

LIGHT TIMER RESET INFO

LIGHT

Fig 8.2 - TurningBacklighting On

Note While the backlighting is on, the lamp icon ( ) will be shownon the bottom left of the display.

➞ The backlighting can either be Local or Network controlled.Local control means that any adjustments to lighting will onlyaffect this specific instrument. With Network control, allinstruments in the network will be affected. (See section 9.5for more details.)

9 CALIBRATIONTo protect the calibration functions, these are held in a hiddenmenu. To enter Calibration mode, press and hold the LIGHTkey. The display will show “CAL” (Fig 9.1).

Once in Calibration mode, pressing the (TIMER) or (RE-SET)keys will cycle through the available calibration options:

• Units (section 9.1)• Damping (section 9.2)• Speed sensor calibration (section 9.3)• Race countdown time (section 9.4)• Local/Network backlighting (section 9.5)• Disabling remote control facility (section 24.1)

Note To exit Calibration mode at any time, press and hold (LIGHT).

9.1 Selecting unitsEnter Calibration mode – the display will show “UNITS CAL”.Press (INFO). The speed units can then be selected (knots,kmh, mph) by pressing the or keys (Fig 9.2).

Press to set the selected speed units.

Next, the distance units can be selected (Nm, km). These areshown on the top line of the display. Again, use the or keyto select, then press to set.

The large digits will then show the temperature units (Centi-gradeor Fahrenheit). Use the or keys to select, and press to set.The unit will then return to the main Calibration menu.


36 E04820 Issue 1.0

Sp

eed

/Lo

g

Fig 9.2 - Selectingspeed units

INFOLIGHT TIMER RESET

or

KTSK M H

LIGHT INFOTIMER RESET

SPEED

UNITS


Instruction Manual


Enter Calibration mode, press once (the display will show“DAMP CAL” on the top line) and press (INFO).The dampinglevel can be adjusted using the or keys (Fig 9.3).


9.3 Speed sensor calibrationWhen the IS12 Speed Log is first installed, it is important thatthe speed sensor is calibrated properly, as different boats withdifferent hull shapes and characteristics can give a slightlydifferent speed reading to the actual speed through the water.

Enter Calibration mode, press twice (the display will show “SPEEDCAL” on the top line) and press . Two speed calibration optionsare then available by pressing or .

The first option is calibration by percentage correction (seesection 9.3.1), which can be performed at the dockside or atsea. The second is calibration by “measured mile”, which mustbe performed at sea. Either one of these can be used to calibratethe speed log to the boat.

9.3.1 Percentage correctionThis method can be used if the displayed speed and the actualspeed vary by the same ratio. For example:

Actual Boat Speed = 6 ktsDisplayed Boat Speed = 5 kts

Error = x 100 = 120%

Therefore, a percentage correction of 120% must be entered:Select the “ ” option in the Speed Cal menu and press .

The display will show the current correction percentage on thetop line of the display (Fig 9.4).

Use the or keys to adjust the percentage correction to therequired level and press to set. The display will then return tothe main Calibration menu.

37E04820 Issue 1.0

Sp

eed

/Lo

g

ActualDisplayed

SPEED

LIGHT TIMER INFO

100%

RESET

KTS

Fig 9.4 - Enteringpercentage correction

INFOLIGHT RESETTIMER

SPEED

DAMP

Fig 9.3 - Adjusting the damping level

Select the “LEG1” option in the Speed Cal menu. Do not pressat this point.

The display will show “– – –” on the large digits (Fig 9.6).

➞ The measured distance used in the calibration procedurewill depend on the units selected (see section 9.1):

- If distance units are Nm, then measured distance is 1Nm.- If distance units are km, then measured distance is 1km.

When the boat reaches the start of the measured distance, pressthe key – the display will show “RUN” (Fig 9.7). Press the

key to cancel the calibration.

At the end of the measured distance run press . The displaywill show “END”. To calibrate the log based on the Leg 1 runonly press again – the display will then exit to the mainCalibration menu.

To re-run Leg 1 again, press or to select “LEG1” andrepeat the above procedure.

For maximum accuracy, the run should be repeated in theopposite direction – press or to select “LEG2” (Fig 9.8)and repeat the above procedure.

At the end of Leg 2 press to calibrate the log as an averageof the two Legs and return to the main Calibration menu.

9.3.2 “Measured mile”This procedure automatically calibrates the speed sensor bycomparing the measured average boat speed over a known distanceand comparing this with what it should have been to cover thisdistance (Fig 9.5). From this the error is automatically calculatedand used to adjust the speed sensor data.

Fig 9.8 - Selecting Leg 2 of Measured

Distance Run

LIGHT TIMER INFO

SPEED

LEG2NM

RESET


38 E04820 Issue 1.0

Sp

eed

/Lo

g

LIGHT TIMER INFORESET

SPEED

LEG1 NM

Fig 9.6 -“Measured mile”

calibration display

LIGHT TIMER INFORESET

Fig 9.7 - During measured distance run

Fig 9.5 - Calibrating boat speed over measured mile

Measured Boat Speed is comparedto the Calculated Boat Speed overa measured distance

Instruction Manual

39E04820 Issue 1.0

Sp

eed

/Lo

g

9.4 Setting race countdown timeAlthough the countdown timer is set at 6 minutes, which isthe recognized countdown time as specified in the CHS2000racing regulations, this can be changed to any value (in 1 minincrements) between 1 minute and 9:59 min (max).

Enter Calibration mode, press three times (the display willshow “RACE CAL” on the top line) and press (INFO).

The countdown time can be adjusted using the and keys.

To set the selected countdown, press . The display will thenreturn to the main Calibration menu.

9.5 Local/Network backlightingThe backlighting can either be local or network controlled. Localcontrol means that any adjustments to lighting will only affectthis specific instrument. With network control, all instruments inthe network will be affected. The IS12 instruments are set tonetwork lighting by default.

Note The IS12 instruments are set to Networked lighting as default.

To enter calibration mode, press four times (the display willshow “LIGHT CAL” on the top line) and press (INFO).

The large digits will show the current setting: “NET” for networkor “LOC” for local. The setting can be changed using the or key. To set the selected backlighting, press . The display will thenreturn to the main menu.




Instruction Manual

41E04820 Issue 1.0

Win

d

LIGHTWIND

ALARMTRUEAPP INFO

Part V

IS12 WIND


The IS12 Wind instrument has a large analogue display showingwind angle. An integrated LCD offers a choice of digital windspeed or wind angle . If used in conjunction with the IS12speed or combi display, it will also display true wind angle andspeed. The IS12 wind instrument offers additional, easy to usefeatures such as high wind alarm, wind angle offset and a digitalclose-haul display. The IS12 wind also has large buttons for easeof use and a dimmable backlit display for night sailing.

11.2 Apparent wind angleWhen the IS12 Analogue Wind instrument is switched on, theapparent wind angle is shown as an analogue readout (Fig 11.1).

Fig 11.1 - Analogue wind angle display

The pointer indicates the direction that the wind is coming fromrelative to the boat (indicated by the “boat shape” on the fascia).In this example, the wind angle is 45° from the starboard bow.The wind angle can also be displayed digitally (see section 11.6for further details).

Note As a standalone instrument, the Analogue Wind instrument canonly show the apparent wind angle – this is the direction thewind appears to be coming from, which is distorted by the forwardvelocity of the boat. In practical terms, this is the correct windangle to trim to, but true wind angle and speed information canalso be displayed if there is input from an IS12 Speed Log orCombi instrument (see section 11.5 for more details).

IS12 Instrument System • Part V – IS12 Wind Speed/Angle

42 E04820 Issue 1.0

Win

d

11.3 Apparent wind speedThe apparent wind speed is shown on the digital display. Thiscan be shown in knots, [kilo]meters per second, miles per hour,or Beaufort. A digital marker indicates the units selected (Fig11.2).

➞ See also note above regarding true wind speed information.

➞ For more information see the Units calibration functionsection 12.1.

11.4 High wind alarmThe Analogue Wind instrument features an alarm that can beset to sound, if the wind speed goes above a specified value.Press the WIND ALARM key. The display will show “ALM”briefly, then change to the current wind alarm setting (Fig 11.3).

Two icons ( and ) appear at the bottom of the display –these correspond with the WIND ALARM and TRUE/APPkeys, indicating that pressing WIND ALARM will decrease thesetting, and pressing TRUE/APP will increase it.

The LIGHT and INFO keys also have icons printed on thefascia above them ( and respectively) – pressing (LIGHT) will cancel or abort an entry and (INFO) willconfirm or accept it.

Press the or key to adjust the wind alarm value to therequired setting.

Press to turn the alarm off. Press to confirm and return tothe main display.

Note If no other key is pressed within 5 seconds, the display will exitto the default display and any changes will be ignored.

If the alarm sounds, pressing WIND ALARM will cancel it.

11.5 True wind angle & wind speedThe Analogue Wind instrument can also show true wind angleand wind speed information, but boat speed information will berequired in order for this to be calculated, which can be suppliedby an IS12 Speed Log or Combi instrument (see Fig 11.4, p. 43).

When boat speed data is supplied to the Analogue Windinstrument, pressing the TRUE/APP keys will togglebetween the Apparent Wind Angle/Speed and the True WindAngle/Speed display.

TRUEAPP INFO

Fig 11.3 - Wind alarm

WINDALARMLIGHT

Fig 11.2 - Apparent wind speed

Units indicator

Fig 11.4 - Minimum IS12 system for true wind data

Speed Log/Combi Analogue Wind

MastheadTransducer

SpeedTransducer

Instruction Manual

43E04820 Issue 1.0

Win

d

The arrow on the LCD display will point to either APP or TRUEindicating which type of data is currently being displayed (Fig 11.5).

Close hauled, port tack Close hauled, starboard tack

Fig 11.7 - Wind direction indicator – Close hauled

Running, starboard tackRunning, port tack

Fig 11.8 - Wind direction indicator – Running

LIGHT WINDALARM

TRUEAPP INFO

ApparentWind mode

Fig 11.5 - Wind mode indicators

True Windmode

11.6 Digital close-hauled displayThe Wind Angle can also be displayed digitally – pressing theINFO key switches between the Wind Speed and close-hauledWind Angle digital displays.

When showing the close-hauled wind angle, the graphic on theleft of the display indicates the direction of the wind.

When sailing close hauled, the digits show the wind anglemeasured from the bow of the boat (Fig 11.7). When running,the digits show the wind angle measured from the stern,indicating how close the boat is to gybing (Fig 11.8).

When boat speed data is being received (see section 11.5),pressing TRUE/APP will switch the digital display betweenapparent and true wind angle.


To switch the backlighting on, press the LIGHT key. Thedisplay will illuminate and the digital display will show thecurrent lighting level (Fig 11.9).Two icons will be shown on the bottom line of the display (and ), corresponding to the WIND ALARM and TRUE/APPkeys. Press to increase the brightness (max 5), or tode-crease it (min 1), (INFO) to confirm the selectedbrightness or (LIGHT) to turn the backlighting off.


➞ The backlighting can either be Local or Network controlled.Local control means that any adjustments to lighting will onlyaffect this specific instrument. With Network control, allinstruments in the network will be affected. (See section 12.5for more details.)

12 CALIBRATIONTo protect the calibration functions, these are held in a hiddenmenu. To enter Calibration mode, press and hold the LIGHTkey. The digital display will show “CAL” briefly, then changeto “UNIT” (Fig 12.1).

Once in Calibration mode, pressing the (WIND ALARM)or (TRUE/APP) keys will cycle through the availablecalibration options:

• Selecting Units (section 12.1)• Fore/Aft transducer mounting (section 12.2)• Wind angle offset (section 12.3)• Configuring the IS12 Wind on SimNet (section 12.4)• Local/Network backlighting (section 12.5)• Disabling remote control facility (section 24.1)

• Shop mode (section 27.2)



44 E04820 Issue 1.0

Win

d


TRUEAPP INFOWIND

ALARMLIGHT

Fig 11.9 - Turningbacklighting on

WINDALARM

TRUEAPP INFOLIGHT

12.1 Selecting unitsEnter Calibration mode and press (INFO). The wind speedunits can then be selected (knots, meters/sec, miles per hour, orBeaufort) by pressing the or keys (Fig 12.2).

Press (INFO) to set the selected wind units.

12.2 Transducer orientationFor some installations, it may be necessary to mount themasthead transducer facing aft, rather than forward as is usual.If this is the case, the following procedure should be followedto avoid the displayed wind angle being 180° out.

Enter Calibration mode, press once (the display will show“ADJ”) and press (INFO).

The display will show “FORE”, indicating that the AnalogueWind instrument is calibrated for the standard mastheadinstallation. Press , and the display will change to “AFT”(Fig 12.3).

Press to confirm – the Analogue Wind instrument is nowcalibrated for an aft-mounted masthead transducer. The displaywill then return to the main Calibration menu.

12.3 Wind angle offsetIf the masthead transducer has not been fitted so that it ispointing precisely fore - aft, it will be necessary to adjust thedisplayed wind angle so that it is correct.Enter Calibration mode, press twice (the display will show“OFST”; Fig 12.4) and press (INFO).

The display will show the current wind angle as read from themasthead transducer. Use the and keys to adjust thedisplayed angle to compensate for the mounting error, untilthe displayed wind angle is correct.

Press to confirm – the Analogue Wind display is nowcalibrated and the display will return to the main Calibrationmenu.

12.4 Configuring the IS12 Wind on SimNetThe Wind instrument can be configured to work with SimNet -capable data sources in two different ways:

Instruction Manual

45E04820 Issue 1.0

Win

d

Fig 12.2 - Selecting units

INFOLIGHT WINDALARM

or

TRUEAPP

Fig 12.4 - Entering windangle offset

INFOLIGHT WINDALARM

or

TRUEAPP

Fig 12.3 - Adjustingtransducer orientation

LIGHT WINDALARM INFOTRUE

APP


APP


46 E04820 Issue 1.0

Win

d

System mode – In this mode the Wind data source for the Windinstrument can be configured by remote devices thathave SimNet device configuration (such as SimNetChartplotters) and which are capable of commandingthe Simrad group.

StandAlone mode – This mode allows the Wind instrument toautomatically select its own Wind data source andcannot be configured by a remote device. Therefore,the Wind instrument will be locked to the same Winddata source, until a change of SimNet mode or amode reset occurs.

The default mode is System mode. To check the mode at anytime, enter Calibration (for details see section 14) and pressto scroll through the calibration pages, until the displayindicates the mode, showing either “SYST” (System mode) or“S-A” (StandAlone mode).

To ensure that the Wind instrument can lock on to the desiredWind data source, the SimNet mode needs to be reset. This willonly need to be done once during installation, unless a changeof configuration, or a new selection of Wind data source isrequired.

1. Choose a SimNet modeSystem mode – In this mode the Wind instrumentautomatically selects its own Wind data source, butcan be reconfigured by a remote device (i.e. a SimNetChartplotter), which is capable of commanding theSimrad group.

StandAlone mode – This is where the Wind instrumentautomatically selects its own Wind data source and is notable to be reconfigured by a remote device. The Wind instrument will be locked on to the same Wind datasource until a manual change of SimNet mode occurs.

2. Choose a Wind data sourceWhen a System or StandAlone reset is actioned, the Windinstrument starts to automatically look for and lock onto aWind data source. If a particular data source is required forselection, then this must be the only data source of its typeon the SimNet bus. To do this, remove all multiple sources

from the bus, just leaving the single data source that isrequired.3. Start the autoselection processIf System mode is required, then the Wind instrument must bepowered up with the right-hand key (INFO) pressed. Makingthis selection will reset the data sources of all other IS12 repeaterdisplays in System mode (Fig 12.5).

If StandAlone mode is required, then the Wind instrumentmust be powered up with the left-hand key (LIGHTS) pressed(Fig 12.6). This selection will not reset any other IS12 datasources.

Note Changing the mode (or even reselecting the same mode) willreset any data source selection the Wind instrument waspreviously locked on to.

12.5 Local/Network backlightingThe backlighting can either be local or network controlled. Localcontrol means that any adjustments to lighting will only affectthis specific instrument. With network control, all instruments inthe network will be affected.


To enter Calibration mode, press three times (the displaywill show “LIGHT”) followed by (INFO).

The digital display will show the current setting – “NET” fornetwork or “LOC” for local. The setting can be changed usingthe or key. To set the selected backlighting mode, pressthe key. The display will then return to the main menu.




Instruction Manual

47E04820 Issue 1.0

Win

d

Fig 12.6 - StandAlone mode

WINDALARM INFOTRUE

APPLIGHT

Fig 12.5 - System mode


APP

14.3 Compass lock modeCompass lock mode allows the current heading to be set as thecourse to steer, with the display indicating the course deviation.

Steer to the required heading and press LOCK. The displaywill show “LOCK” for one second, and the needle will swing topoint straight ahead.

The digital display shows the locked heading and the pointerwill show the deviation from the locked heading using the innerscale, which has a maximum deviation of 20° (Fig 14.2).

The locked heading can be manually adjusted at any time bypressing the and keys.

To exit Compass lock mode and return to normal compassoperation, press LOCK.

Instruction Manual

49E04820 Issue 1.0

Co

mp

ass

LIGHT LOCK

Part VI

IS12 COMPASS


The IS12 Compass features both analogue and digital displays ofthe current boat heading in either True or Magnetic. You alsohave the ability to lock the compass to display coursedeviation.The IS12 compass also has large buttons for ease ofuse and a dimmable backlit display for night sailing.

14.2 Compass displayWhen the instrument is switched on, the display will show“MAGº” (magnetic bearing) or “TRUº” (true bearing), dependingon which setting has been selected in the Calibration menu (seesection 15.5). After one second the display will change to showthe heading (Fig 14.1).

Fig 14.1 - Analogue Compass display

Fig 14.2 - Compass lock mode

IS12 Instrument System • Part VI – IS12 Compass

50 E04820 Issue 1.0

Co

mp

ass


To switch the backlighting on, press the LIGHT key. Thedisplay will illuminate and the digital display will show thecurrent lighting level (Fig 14.4) -Press to increase the brightness (max 5), to decreaseit (min 1), (LOCK) to confirm the selected brightness or (LIGHT) to turn the backlighting off.

The backlighting can either be Local or Network controlled.Local control means that any adjustments to lighting willonly affect this specific display. With Network control, allinstruments in the network will be affected. See Section 15.8for more details.

15 CALIBRATIONTo protect the calibration functions, these are held in a hiddenmenu. To enter Calibration mode, press and hold the LIGHTkey. The digital display will show “CAL” briefly, then changeto “DPG” (Fig 15.1).

Once in Calibration mode, pressing the or key willcycle through the available calibration options:

• Damping (section 15.1)

• Adjusting transducer orientation (section 15.2)

• Compass Angle Offset (section 15.3)

• Auto Calibration (section 15.4)

• Magnetic/True heading (section 15.5)

• Magnetic variation (section 15.6)

• Local/network backlighting (section 15.8)

• Disabling remote control facility (section 24.1)



LOCKLIGHT

Fig 14.4 - TurningBacklighting On

LOCKLIGHT

Instruction Manual

51E04820 Issue 1.0

Co

mp

ass

0º

180º

90º270º

BOW

BULKHEAD

Fig 15.3 - Compass orientation

15.1 DampingThe damping function adjusts the update rate of the displayeddata. A damping level of 0 (minimum) will cause the display toupdate rapidly, while a damping level of 4 (maximum) willresult in a more stable display. The damping level set affects theanalogue and digital readouts in both standard compass headingand locked heading modes.

Enter Calibration mode (the display will show “DPG”) andpress (LOCK). The damping level can be adjusted using the

or key (Fig 15.2).

To set the selected damping level, press . The display will thenreturn to the main Calibration menu.

Note The damping setting is stored locally in the display head, so ina system with more than one compass display it will be necessaryto set the damping on each head.

15.2 Adjusting transducer orientationThe Compass transducer can be mounted pointing four differentways: 0°, 90°, 180° or 270° to the bow (see Fig 15.3, ). Thefactory preset is 0° (pointing forward). If the compass ismounted pointing any other way, this must be programmed inusing an IS12 Compass display head (part no. IS12Compass:R).

Fig 15.2 - Adjustingthe damping level

LIGHT LOCK

Enter Calibration mode, press once to select “ADJ” andpress . The display will show the current offset. Press the

key to adjust the offset in 90° steps to port. Press toadjust the offset in 90° steps to starboard: 90°, 180° and 270°.Press (LOCK) to set the selected compass orientation.


52 E04820 Issue 1.0

Co

mp

ass

15.3 Compass angle offsetAlthough the IS12 Compass is extremely accurate, once calibratedit may be desirable to adjust the displayed heading, so that itmatches that of the ship’s compass or another piece of equipment.For this purpose a compass angle offset can be entered.

Enter Calibration mode and press twice to select “OFST”and press (LOCK). The display will show the current offsetentered (factory default is 0°). Press to offset the displayedheading counterclockwise (1° per press), or to offset theheading clockwise (Fig 15.4).

Note The display will show “-” for an counterclockwise offset and“+” for a clockwise offset.

Press to confirm the offset entered and return to the Calibrationmode menu.

15.4 Transducer calibrationBefore using the IS12 Compass, the transducer must becalibrated to compensate for any magnetic deviation causedby ferrous or magnetic objects surrounding it on the boat, suchas cockpit speakers, etc.

1. With the boat motoring along slowly (2–3 knots) in calmconditions turn the wheel to induce a slow rotation of theboat in either direction (approx. 4°/sec).

2. Enter Calibration mode and press three times toselect “AUTO” and press (LOCK). The display will flashbetween “TURN” and “AUTO”.

3. Allow the boat to turn through a minimum of 11⁄4 turns(450°) in approximately 2 minutes, during which time thecompass transducer will automatically calibrate itself.

4. If the rate of turn is too high, the display will flash “LESS”indicating decrease the angle of turn – turn the wheel slightlyto decrease the angle until the display flashes “TURN” and“AUTO” again. If the rate or turn or boat speed is too slow,the display will flash “MORE” indicating increase the angleof turn (Fig 15.6); turn the wheel slightly to increase theangle until the display flashes “TURN” and “AUTO” again.

Fig 15.6 -Increase/decrease

rate of turn

Increase speed/rate of turn

Decrease speed/rate of turn

Fig 15.4 - Entering compass angle offset

LIGHT LOCK

Instruction Manual

53E04820 Issue 1.0

Co

mp

ass

If the calibration is successful, the display will show “PASS” andsound a long beep. If the calibration has failed, the display willshow “FAIL” and sound an alarm – repeat the above procedurefollowing the directions carefully.

Press to save the autocalibration and return to the Calibrationmode menu.

Note If the compass will still not calibrate, then it is usually becausethe deviation being detected is too great, which may be due tothe compass transducer being too close to a metallic or magneticobject (the minimum safe distance is 1 m [3 ft]). Move thetransducer to a position as close to the ideal centerlinelocation as possible, but away the from speakers, metallicsuperstructure, etc. Repeat the above procedure.

Note This should only need to be done once when the transducer isfirst installed, unless the transducer is changed, repaired, relocated,or where any metallic objects have been installed or removednear to the transducer since it was calibrated. In the interests ofaccurate performance, always bear in mind the location of thetransducer when installing any metallic objects on the boat. Ifin any doubt, recalibrate the compass transducer.

15.5 Magnetic/true headingAs a default, the compass will display the magnetic heading detectedby the transducer. However, if the magnetic variation has beenentered (see section 15.6), the display can also show the true heading.

To set the display to show the true heading, enter Calibration modeand press four times to select “HDG” and press (LOCK).

The display will show the currently selected display: “MAG°”formagnetic heading, or “TRU°”for true heading (Fig 15.6).

Press or to toggle between the two options and pressto confirm.

Fig 15.6 - Togglingbetween displays

LIGHT LOCK


54 E04820 Issue 1.0

Co

mp

ass

15.6 Magnetic variationIn order to be able to display the true heading (see section 15.5),it is necessary to enter the local magnetic variation, whichis shown on charts of the area and is expressed as a numberof de-grees east or west of the magnetic heading.

To set the display to show the true heading, enter Calibrationmode and press four times to select “M:VAR” and press

(LOCK). The display will show the current magnetic variationentered (factory default is 0°).

Press to enter an westerly variation (1° per press), or to enter an easterly variation (Fig 15.7). Press to confirm thevariation entered and return to the main Calibration menu.

Note As the local magnetic variation differs from region to regiondue to fluctuations in the earth’s magnetic field it is importantto check the local variation as shown on charts during longervoyages and adjust this setting if required.

Note If the Compass instrument is using an NMEA input to providethe heading information, the variation is automatically suppliedand is displayed here, but is not adjustable.

15.7 Configuring the IS12 Compass on SimNetThe Compass instrument can be configured to work withSimNet-capable data sources in two different ways:

System mode – In this mode the heading data source for theCompass instrument can be configured by remotedevices that have SimNet device configuration (such asSimNet Chartplotters) and are capable of commandingthe Simrad group.

StandAlone mode – This mode allows the Compass instrumentto automatically select its own heading data source andcannot be configured by a remote device. Therefore,the Compass instrument will be locked to the sameheading data source, until a change of SimNet mode ora mode reset occurs.

The default mode is System mode. To check the mode at anytime, enter the Calibration mode (see section 5 for details) andpress to scroll through the calibration pages, until the displayindicates the mode by showing “SYST” (System mode) or “S-A” (StandAlone mode).

Fig 15.7 - Entering thelocal magnetic variation

LIGHT LOCK

To ensure that the Compass instrument can lock on to thedesired heading data source, the SimNet mode needs to bereset. This will only need to be done once during installation,unless a change of configuration, or a new heading data sourceis re-quired.

1. Choose a SimNet modeSystem mode – In this mode the Compass instrument

automatically selects its own heading data source,but can be reconfigured by a remote device (i.e. aSim-Net chartplotter), which is capable of commandingthe Simrad group.

StandAlone mode – this is where the Compass instrumentautomatically selects its own heading data sourceand is not able to be reconfigured by a remotedevice, only manually.

2. Choose a heading data sourceWhen a System or StandAlone reset is actioned, the Compassinstrument starts to automatically look for and lock onto aheading data source. If a particular data source is required forselection, then this must be the only data source of its type onthe SimNet bus. To do this, remove any multiple sources fromthe bus, just leaving the single data source that is required.

3. Start the autoselection processIf System mode is required, then the Compass instrument mustbe powered up with the right-hand key (LOCK) pressed.Making this selection will reset the data sources of all otherIS12 repeater displays in System mode (Fig 15.8).

If StandAlone mode is required, then the Compass instrumentmust be powered up with the left-hand key (LIGHTS) pressed.Note that this selection will not reset any other IS12 datasources (Fig 15.9).

Note Changing the mode (or even reselecting the same mode) willreset any data source selection the Compass instrument waspreviously locked on to.



Instruction Manual

55E04820 Issue 1.0

Co

mp

assLOCKLIGHT


LOCKLIGHT


IS12 Instrument System • Part III – IS12 Compass

56 E04820 Issue 1.0

Co

mp

ass

To enter Calibration mode, press three times (the displaywill show “LIGHT”) and press (LOCK).

The digital display will show the current setting: “NET” fornetwork or “LOC’ for local backlighting. The setting can bechanged using the and keys. To set the selectedbacklighting mode, press . The display will then return to themain menu.




Instruction Manual

57E04820 Issue 1.0

Data

Part VII

IS12 DATA


The IS12 Data is designed to repeat data from any IS12 or Sim-Netnavigation unit that is part of the installation.

Fig 17.1 - IS12 Data Repeater

The example above, (Fig 17.1) shows the apparent wind speedand angle, available if an IS12 Wind transducer is part of thesystem. Data will only be displayed if the relevant master unit isalso part of the system (IS12 Speed, Depth, Wind, Compass, etc).If the relevant master unit is not available, the display will show“– – –”.

The top and bottom lines of the display can be individuallyselected using the UPPER INFO and LOWER INFO keys,and there are also four preset data pages available by pressingthe PAGE key, which can be adjusted by the user, allowingcommonly used instrument data to be easily displayed.

Note As this unit is a data repeater, no control or calibrationfunctions are available. To adjust any settings (e.g., depthalarms), or activate any functions (e.g., race countdown timer),use the relevant master unit.

17.2 Upper Info displayTo choose the data displayed on the top line of the Data, pressthe UPPER INFO key. Repeatedly pressing the UPPER INFO

DATA

LIGHT UPPERINFO

LOWERINFOPAGE

IS12 Instrument System • Part VII – IS12 Data

58 E04820 Issue 1.0

Data

key will cycle through the available data:

Depth ¬Shallow Alarm Setting ¬Deep Alarm Setting ¬Apparent Wind Angle ¬True Wind Angle ¬Compass Bearing ¬Bearing To Waypoint (BTW) ¬Course Over Ground (COG) ¬Lat/Long ¬

Note The Lat/Long display will fill both the top and bottom lines ofthe display. In order to display both the Latitude and Longitude,the display will switch between Lat and Long automatically if thisis selected (Fig 17.2).

17.3 Lower Info displayTo choose the data displayed on the bottom line of the Data,press the LOWER INFO key. Repeatedly pressing theLOWER INFO key will cycle through the available data:

Boat Speed ¬Log ¬Trip ¬Water Temp ¬Average Speed ¬Max Speed ¬Race Countdown/Elapsed Timer ¬Apparent Wind Speed ¬True Wind Speed ¬Wind Speed Alarm Setting ¬Rudder Angle ¬Speed Over Ground (SOG) ¬Cross Track Error (XTE) ¬

17.4 Page displayThe Data instrument includes four programmable displaypages, allowing important or commonly used data to be easilyaccessible.

DATA

LIGHT PAGE UPPERINFO

LOWERINFO

DATA


LOWERINFO

Fig 17.2 - Lat/Long display

Instruction Manual

59E04820 Issue 1.0

Data

DATA

LIGHT UPPERINFO

LOWERINFO

DATA

LIGHT UPPERINFO

LOWERINFO

DATA

LIGHT UPPERINFO

LOWERINFO

DATA

LIGHT UPPERINFO

LOWERINFO

PAGE PAGE

PAGEPAGE

Fig 17.3 - Examples of page displays

To cycle through the four pages, press the PAGE key repeatedly(Fig 17.3). If the IS12 system is switched off, the previouslyselected page will be displayed on power up.

➞ To configure the page layouts, please refer to section 18.1.

17.5 NMEA sentencesThe following data sentences are output by the Data unit:

DBT Depth below transducerDPT Depth below transducer & offsetHDG Magnetic Heading inc Deviation & VariationMTW Water Temperature (ºC)MWV Wind Speed & AngleVHW Boat Speed & Magnetic Heading

Note The above NMEA sentences will only be outputted if the relevantmaster unit is present on the IS12 system, i.e. the Wind transducermust be present for the Wind sentences to be generated.

17.6 BacklightingThe backlighting illuminates the display and the keys with fivelevels of brightness.

To switch the backlighting on, press the LIGHT key. The displaywill illuminate and the large digits will show the current lightinglevel (Fig 17.4). Press the (UPPER INFO) key to increasethe brightness (max 5), (PAGE) to decrease it (min 1),(LOWER INFO) to accept the selected brightness or (LIGHT)to turn the backlighting off.

Fig 17.4 - Adjustingbacklighting

DATA


LOWERINFO


60 E04820 Issue 1.0

Data


The backlighting can either be Local or Network controlled. Localcontrol means that any adjustments to lighting will only affectthis specific instrument. With Network control, all instrumentsin the network will be affected (see section 18.3 for moredetails).

18 CALIBRATIONTo protect the calibration functions, these are held in a hiddenmenu. To enter Calibration mode, press and hold the LIGHTkey (Fig 18.1). The display will show “CAL PAGE”.In Calibration mode pressing the (PAGE) and (UPPERINFO) keys will cycle through the available calibration options:

• Page configuration (section 18.1)

• Configuring the IS12 Data on SimNet (section 18.2)• Local/Network backlighting (section 18.3)• Disabling remote control facility (section 24.1)


18.1 Page configurationEnter Calibration mode and press (LOWER INFO). Thelayout of the four page displays can then be changed:

• Press PAGE ( ) to cycle through the four pages and selectthe page to be amended.• Press LOWER INFO ( ) to cycle through the availabledata on the bottom line of the display.• Press UPPER INFO ( ) to cycle through the available dataon the top line of the display.

Note If a new data item is selected (which is different from the originalpage setting), the digits will flash.

Press PAGE ( ) to set the layout of Page 1 and move on to Page2. Repeat the procedure as described for each of the four pages.

LOWERINFOLIGHT PAGE UPPER

INFO


Instruction Manual

61E04820 Issue 1.0

Data

Upper Info data options :Depth ¬Shallow Alarm Setting ¬Deep Alarm Setting ¬Apparent Wind Angle ¬True Wind Angle ¬Compass Bearing ¬Bearing To Waypoint (BTW) ¬Course Over Ground (COG) ¬Lat/Long ¬

Lower Info data options :Boat Speed ¬Log ¬Trip ¬Water Temp ¬Average Speed ¬Max Speed ¬Race Countdown / Elapsed Timer ¬Apparent Wind Speed ¬True Wind Speed ¬Wind Speed Alarm Setting ¬Rudder Angle ¬Speed Over Ground (SOG) ¬Cross Track Error (XTE) ¬

Press (LIGHT) to accept the changes and exit to theCalibration menu.

Note If selecting Lat and Long as a page display (use the UPPERINFO key), this will fill both the top and bottom lines of thepage simultaneously.

18.2 Configuring the IS12 Data on SimNetThe Data instrument can be configured to work withSimNet-capable data sources in two different ways:

System mode – In this mode all the data sources for the Datainstrument can be configured by remote devicesthat have inbuilt SimNet device configuration(such as SimNet Chartplotters) and are capable ofcommanding the Simrad group.

StandAlone mode – This mode allows the Data instrumentto automatically select its own data sources, itcannot be configured by a remote device.


62 E04820 Issue 1.0

Data

Therefore, the Data instrument will be locked tothe same data sources, until a change of SimNetmode or a mode reset occurs.

The default mode is System mode. To check the mode at any time,enter Calibration mode and press to scroll through the calibrationpages until the bottom line of the display indicates the mode byshowing “SYST” (System mode) or “S-A” (Stand-Alone mode).

To ensure that the Data instrument can lock onto the desireddata sources, the SimNet mode needs to be reset. This will onlyneed to be done once during installation, unless a change ofconfiguration or a new selection of data sources are required.

1. Choose, which SimNet mode is requiredSystem mode – In this mode the Data instrument automatically

selects its own data sources, but can be reconfigured by aremote device (i.e. a SimNet Chartplotter), which is capableof commanding the Simrad group.

StandAlone mode – In this mode the Data instrumentautomatically selects its own data sources and cannotbe reconfigured by a remote device. The Data instrumentwill be locked to the same data sources until a manualchange of SimNet mode occurs.

2. Choose, which data sources are requiredWhen a System or StandAlone reset is actioned, the Datainstrument starts to automatically look for and lock onto eachdata source (i.e. Depth, Speed, Heading, etc). If a particular datasource is required for selection, then this must be the only datasource of its type on the SimNet bus. To do this, remove anymultiple sources from the bus just leaving the single data sourcethat is required.

3. Start the autoselection processIf System mode is required, then the Data instrument must bepowered up with the right-hand key (LOWER INFO) pressed.This selection will reset the data sources of all other IS12repeater displays in System mode (Fig 18.2).

If StandAlone mode is required, then the Data instrumentmust be powered up with the left-hand key (LIGHTS) pressed(Fig 18.3). Making this selection will not reset any other IS12data sources.

DATA

UPPERINFOPAGELIGHT LOWER

INFO


Fig 18.3 -StandAlone mode

DATA

UPPERINFO

LOWERINFOPAGELIGHT

Instruction Manual

63E04820 Issue 1.0

Data

➞ Changing the mode (or even reselecting the same mode) willreset any data source selection the Data instrument was previouslylocked on to.



To enter Calibration mode, press once (the display will show“CAL LIGHT”) and press (LOWER INFO).

The top line will show the current setting: “NET” for networkor “LOC” for local backlighting. The setting can be changedusing the or key. To set the selected backlighting mode,press . The display will then return to the main menu.




Instruction Manual

65E04820 Issue 1.0

Meg

a

Part VIII

IS12 MEGA


The IS12 Mega is a large-digit multifunction repeater that candisplay data either from any IS12 master unit or other SimNetdevice (Fig 20.1).

The IS12 Mega will also repeat information from otherequipment via NMEA 0183 (Fig 20.2).

Fig 20.1 - Mega displays as IS12 system repeaters

Fig 20.2 - Mega displays as NMEA repeaters

MEGA MEGA MEGA

IS12 SPEED IS12 DEPTH IS12 WIND

SIMNET CHARTPLOTTER

NMEA

NMEA

IS12 Instrument System • Part VIII – IS12 Mega

66 E04820 Issue 1.0

Meg

a

Press the INFO key to cycle through the data pages on theMega instrument (*these pages are preset to “ON”):

Boat Speed* ¬Log ¬Trip ¬Water Temperature ¬Average Speed ¬Maximum Speed ¬Race Start Timer ¬Depth* ¬Shallow Alarm Setting ¬Deep Alarm Setting ¬AWA* - Apparent Wind Angle (0–180°) ¬AWA - Apparent Wind Angle (0–90° relative to bow/stern) ¬AWS* - Apparent Wind Speed ¬TWA - True Wind Angle (0–180°) ¬TWA - True Wind Angle (0–90° relative to bow/stern) ¬TWS - True Wind Speed ¬TWD - True Wind Direction ¬VMG - Velocity Made Good ¬High Wind Alarm Setting ¬MAG°* - Magnetic Compass Bearing ¬TRUE° - True Compass Bearing ¬COG M - Course Over Ground (Magnetic) ¬COG T - Course Over Ground (True) ¬SOG - Speed Over Ground ¬BTW - Bearing To Waypoint ¬XTE - Cross Track Error ¬

Note Although Lat & Long cannot be displayed by the Mega, thisdata is converted to IS12 format and can be displayed on anyIS12 Data display in the system.

Data will only be displayed on a page, if a master unit outputtingthis information is linked to the Mega instrument. If data is notavailable, the instrument will show “– – –”.

Individual data pages can be switched off, if necessary, to avoidhaving to cycle through pages that have no incoming data (seesection 21.1 for further details).

20.2 Data page information20.2.1 Calibration and settingsNo control or calibration of the incoming data is possible. To adjustany settings (e.g., depth alarms), or activate any functions (e.g.race countdown timer), use the relevant master unit.

20.2.2 Display unitsThe units of measurement used on the data pages are dictatedby the incoming data – to change most, select the requireddisplay units on the master unit. For depth however, units areselectable in either merters or feet (see section 21.5 for moredetails)

20.2.3 Information requiredSeveral of the data pages require information from two or moresources in order to process the data sentence – for example, tocalculate true wind data, both wind and boat speed informationare required.

➞ Please refer to section 21.3 for full details of the incominginformation required for each data page.

20.2.4 Cancelling alarmsIf an alarm is triggered by a master unit, the Mega will switchto the relevant data page. The alarm will sound on the Megaand the alarm icon and top line of the display will flash (Fig20.3). To cancel the alarm, press any key.

Note Any alarms originating from an IS12 master unit will be mutedafter 15 seconds, but if the incoming information still exceedsthe alarm setting threshold, the alarm will be triggered every30 seconds until canceled.

20.2.5 Apparent & true wind angleThere are two display options for each of the above pieces ofdata.

• The first is a standard 0–180° display, which shows the windangle relative to the boat and the current tack (Fig 20.4a).

• The second option shows the wind angle as 0–90°, relativeto the bow or stern of the boat (Fig 20.4b).

Instruction Manual

67E04820 Issue 1.0

Meg

a

MEGA

Fig 20.3 - Alarm display

Fig 20.4 - a) “Full” wind angle display; b) “Close-hauled” windangle display

MEGA MEGA

a) b)

• • INFOLIGHT

• • INFOLIGHT • • INFOLIGHT

20.2.6 VMG (Velocity Made Good)The VMG page is generated by the Mega itself. For this informationto be generated Boat Speed, Apparent Wind Angle, and ApparentWind Speed data are required.

The top line of the display will show “VMG” when close hauledand flashes “-VMG-” when running downwind (Fig 20.7).

20.2.7 XTE (Cross Track Error)The Cross Track Error (XTE) is the amount of deviation fromthe ideal track to the target waypoint displayed as a distancefrom the track.

The arrow on the top line of the display indicates the directionof the error from the track (Fig 20.8).

Fig 20.8 - XTE display


68 E04820 Issue 1.0

Meg

a

When running, the digits show the wind angle measured fromthe stern, indicating how close the boat is to gybing (Fig 20.6).

MEGA

WPT 2

WPT 1

0.41Nm

Running, starboard tackRunning, port tack

Fig 20.6 - Wind direction indicator - Running

When showing the close-hauled wind angle, the graphic on theleft of the display indicates the direction of the wind. Whensailing close hauled, the digits show the wind angle measuredfrom the bow of the boat (Fig 20.5).

Fig 20.7 - VMGdisplay

VMG close hauled(Upwind)

VMG running(Downwind)

MEGA

Close hauled, port tack Close hauled, starboard tack

Fig 20.5 - Wind direction indicator - Close hauled

MEGA


To switch the backlighting on, press the LIGHT key. Thedisplay will illuminate and the large digits will show thecurrent lighting level (Fig 20.9).

Press the (• RIGHT) key to increase the brightness (max 5),(• LEFT) to decrease it (min 1), (INFO) to accept the

selected brightness, or (LIGHT) to turn the backlighting off.


The backlighting can either be Local or Network controlled.Local control means that any adjustments to lighting will onlyaffect this specific instrument. With Network control, all instrumentsin the network will be affected (see section 21.4 for more details).

21 CALIBRATIONTo protect the calibration functions, these are held in a hiddenmenu. To enter Calibration mode, press and hold the LIGHTkey (Fig 21.1).

Once in Calibration mode, pressing the (• LEFT) and(• RIGHT) keys will cycle through the available calibration

options:

• Units (section 21.1)

• Page configuration (section 21.2)

• Operation modes – IS12/NMEA (section 21.3)

• Local/network backlighting (section 21.4)

• Disabling remote control facility (section 24.1)

• Configuring the IS12 Mega on SimNet (section 21.5)


Instruction Manual

69E04820 Issue 1.0

Meg

a

LIGHT • • INFO

Fig 20.9 - Turningbacklighting on


MEGA

LIGHT • • INFO


70 E04820 Issue 1.0

Meg

a

21.1 UnitsThe depth units are selectable as meters or feet.Enter calibration mode and cycle through the options until“UNITS” is displayed and press (INFO). The current unitwill be shown. To toggle between meters (M) and feet (FT)press the or key. Press to accept and return to thecalibration menu.

21.2 Page configurationTo avoid having to scroll through data pages that have no incominginformation, or to set the Mega to display only selectedinformation available, individual data pages can be disabledusing this function.

Enter Calibration mode - the display will show “PAGES CA” -and press (INFO). The current data page and its displaystatus will be shown (Fig 21.2). “ON” indicates that this datapage is currently enabled. To scroll through the data pages andview their configuration status, press the and keys.

To toggle this page “ON”/“OFF”, press INFO. With the pagedisabled, it will not be displayed when scrolling through thedata pages.

Press to advance to the following data page. Press LIGHT toaccept the changes and exit to the Calibration menu.

21.3 Operation modesThere are two modes of operation for the Mega instrumentdepending on the installation and equipment it is to be usedalongside.

21.3.1 IS12 mode (Mode 1)This function allows the Mega to be used as part of an IS12instrument system. In this mode, the Mega will display thefollowing data:

• IS12 data present on the system• Processed* navigational data via the IS12 network• Incoming navigational data via NMEA 0183

* i.e. any nav data received and converted to IS12 data format by another piece of equipment on the network.

Fig 21.2 - Page configuration status

MEGA

• • INFOLIGHT

Instruction Manual

71E04820 Issue 1.0

Meg

a

In this mode, any third-party navigational master units connectedto the Mega via the NMEA In terminals will be repeated by theMega display and this data will then be passed onto the IS12network. Incoming NMEA instrument data (i.e. speed, depth,wind, etc.) cannot be displayed.

Note Only one instrument can receive NMEA data in an IS12instrument system.

Note If the same item of data is already available on the IS12 networkthen the incoming NMEA sentence is not processed – IS12network data always takes precedence over NMEA data.

The NMEA Out terminals will transmit the following data:

• IS12 instrument data.

Fig 21.3 - Installation example: IS12 mode

NMEA InNav data

NMEA OutInstrument data

IS12Instrument data

& convertednav data

21.3.2 NMEA mode (Mode 2)This mode should be selected, if the Mega instrument is to beused as an NMEA data repeater with no IS12 master units. Inthis mode, the Mega will display the following data:

• NMEA 0183 instrument data

• NMEA 0183 navigational data

In this mode only the NMEA terminals are used to link the Mega


72 E04820 Issue 1.0

Meg

a

NMEA In

Instrument & nav data

NMEA Out

Instrument & nav data

Fig 21.4 - Installation example: NMEA mode

12V

in

To switch between IS12 & NMEA modes, enter Calibrationmode and press once (the display will show “MODE CAL”).Press (INFO) to accept.

The large digits on the display will show “1” for IS12 mode or“2” for NMEA mode. Press or to change modes, then to accept and return to the Calibration menu.

21.3.3 Data requiredThis section details the equipment/incoming NMEA datare-quired for each data page to function:

• Boat SpeedMode 1 - An IS12 Speed or Combi instrumentMode 2 - VHW

• LogMode 1 only - An IS12 Speed or Combi instrument

• TripMode 1 only - An IS12 Speed or Combi instrument

• Water TemperatureMode 1 - An IS12 Speed or Combi instrumentMode 2 - MTW

to any master units – the network ports are only used to supplypower to the display. No data is received or transmitted to anyIS12 units connected to the Mega via the network ports.

The NMEA Out terminals will retransmit the following data:

• NMEA 0183 instrument data

• NMEA 0183 navigational data

Instruction Manual

73E04820 Issue 1.0

Meg

a

• Average SpeedMode 1 only - An IS12 Speed or Combi instrument

• Maximum SpeedMode 1 only - An IS12 Speed or Combi instrument

• Race Start TimerMode 1 only - An IS12 Speed or Combi instrument

• DepthMode 1 - An IS12 Depth or Combi instrumentMode 2 - DPT or DBT

• Shallow Alarm SettingMode 1 only - An IS12 Depth or Combi instrument

• Deep Alarm SettingMode 1 only - An IS12 Depth or Combi instrument

• AWA - Apparent Wind AngleMode 1 - An IS12 Wind transducerMode 2 - VWR or MWV

• AWS - Apparent Wind SpeedMode 1 - An IS12 Wind transducerMode 2 - VWR or MWV

• TWA - True Wind AngleMode 1 - IS12 Speed or Combi, plus Wind transducerMode 2 - VWR & VHW, MWV (R) & VHW or MWV(T)

• TWS - True Wind SpeedMode 1 - IS12 Speed or Combi, plus Wind transducerMode 2 - VWR & VHW, MWV (R) & VHW or MWV(T)

• TWD - True Wind DirectionMode 1 - IS12 Wind and Compass transducersMode 2 - HDG plus - VWR & VHW, MWV(R) & VHW or MWV(T)

• VMG - Velocity Made GoodMode 1 - IS12 Speed or Combi, plus Wind transducerMode 2 - VHW plus - VWR or MWV(R)

• High Wind Alarm SettingMode 1 only - An IS12 Wind transducer & instrument

• MAG° - Magnetic Compass Bearing Mode 1 - An IS12 Compass transducerMode 2 - HDG or VHW

• TRUE° - True Compass BearingMode 1 - An IS12 Compass transducer & instrument

with magnetic variation data enteredMode 2 - HDG or VHW (with magnetic variation data

entered in master unit)

• COG M - Course Over Ground (Mag)Mode 1 - An IS12-compatible GPS/chartplotter or VTGMode 2 - VTG

• COG T - Course Over Ground (True)Mode 1 - An IS12-compatible GPS/chartplotter with magnetic

variation data entered or VTG, RMA, or RMCMode 2 - VTG, RMA, or RMC

• SOG - Speed Over GroundMode 1 - An IS12-compatible GPS/chartplotter or VTG, RMA or

RMCMode 2 - VTG, RMA or RMC

• BTW - Bearing To WaypointMode 1 - An IS12-compatible GPS/chartplotter or BWR or BWCMode 2 - BWR or BWC


74 E04820 Issue 1.0

Meg

a

• XTE - Cross Track ErrorMode 1 - An IS12-compatible GPS/chartplotter or XTE or RMBMode 2 - XTE or RMB

21.3.4 NMEA sentencesThe following NMEA sentences are transmitted/received by theMega instrument:

Mode 1 (IS12 mode)Received DataVTG Course over ground (mag & true), speed over groundRMA Speed & course over groundRMB Cross track error & bearing to waypoint (T)RMC Speed & course over groundBWR Bearing to waypoint (rhumb line)BWC Bearing to waypoint (great circle)GLL Geographic position (Lat/Long)XTE Cross track error

Transmitted DataVHW Boat speed & heading (mag & true)MTW Water temperatureDBT Water depthDPT Water depth inc. offsetMWV Apparent wind angle & speedHDG Heading (mag & true)

Mode 2 (NMEA repeater mode)Received DataVHW Boat speed & heading (mag & true)MTW Water temperatureDPT Water depth incl. offsetMWV Apparent & true wind angle & speedHDG Heading (mag & true)VTG Course over ground (mag & true), speed over groundVWR Apparent wind angle & speedRMA Speed & course over groundRMB Cross track error & bearing to waypoint (T)RMC Speed & course over groundBWR Bearing to waypoint (rhumb line)BWC Bearing to waypoint (great circle)GLL Geographic position (Lat/Long)XTE Cross track error

Transmitted DataIn Mode 2 all NMEA data received is re-transmitted to NMEA Out.

21.4 Local/Network backlightingThe backlighting can either be local or network controlled. Localcontrol means that any adjustments to lighting will only affect

this specific instrument. With network control, all instruments inthe network will be affected.

The IS12 instruments are set to network lighting by default.

To enter Calibration mode, press once (the display will show“LIGHT CAL”) and press (INFO).

The top line will show the current setting – “NET” for Networkor “LOC” for Local. The setting can be changed using the or

key. To set the selected backlighting modes, press . Thedisplay will then return to the main menu.



21.5 Configuring the IS12 Mega on SimNetThe Mega instrument can be configured to work with SimNet-capable data sources in two different ways:

System mode – In this mode all the data sources for the Megainstrument can be configured by remote devices that havebuilt-in SimNet device configuration (such as SimNetchartplotters) and which are capable of commanding theSimrad group.

StandAlone mode – This mode allows the Mega instrument toautomatically select its own data sources and cannot beconfigured by a remote device. Therefore, the Megainstrument will be locked to the same data sources, until achange of SimNet mode or a mode reset occurs.

The default mode is System mode. To check the mode at anytime enter Calibration mode and press to scroll through thecalibration pages, until the top line ofthe display indicates the mode by showing “SYST” (Systemmode) or “S-A” (Stand-Alone mode).

To ensure that the Mega instrument can lock onto the desireddata sources, the SimNet mode needs to be reset. This will onlyneed to be done once during installation, unless a change ofconfiguration, or a new selection of data sources is required.

1. Choose, which SimNet mode is requiredSystem mode – In this mode the Mega instrument

automatically selects its own data sources, butcan be reconfigured by a remote device (i.e. aSimNet chartplotter), which is capable ofcommanding the Simrad group.

Instruction Manual

75E04820 Issue 1.0

Meg

a

StandAlone mode – This is where the Mega instrumentautomatically selects its own data sources and isnot able to be reconfigured by a remote device.The Mega instrument will be locked on to thesame data sources until a manual change ofSimNet mode occurs.

2. Choose, which data sources are requiredWhen a System or StandAlone reset is actioned, the IS12 Megainstrument starts to automatically look for and lock onto eachdata source (i.e. Depth, Speed, Heading, etc). If a particular datasource is required for selection, then this must be the only datasource of its type on the SimNet bus. To do this, remove anymultiple sources from the bus just leaving the single data sourcethat is required.

3. Start the autoselection processIf System mode is required, then the Mega instrument must bepowered up with the right-hand key (INFO) pressed. Makingthis selection will reset the data sources of all other IS12repeater displays in System mode (Fig 21.4).

If StandAlone mode is required, then the Mega instrumentmust be powered up with the left-hand key (LIGHTS) pressed(Fig 21.5). This selection will not reset any other IS12 datasources.

Note Changing the mode (or even reselecting the same mode)will reset any data source selection the Mega instrumentwas pre-viously locked on to.


IS12 Instrument System • Part VI – IS12 Mega

76 E04820 Issue 1.0

Meg

a

MEGA

• •LIGHT

Fig 21.4 -System mode

MEGA

• • INFO

INFO

LIGHT


Instruction Manual

77E04820 Issue 1.0

Rem

ote

Part IXIS12 REMOTE CONTROL


The IS12 Remote Control can be used to control all the majorfunctions of any IS12 instrument that is on the same network,including calibration functions. The remote also repeats all alarms.

23.2 Selecting displayControl of a specific instrument is accessed by pressing the ▼ keyon the Remote Controller. This will select the first instrumenton the network, indicated by “CTRL” flashing briefly on theinstrument display (Fig 23.1).The unit selected can now be operated using the remote control.To select a different instrument, press the ▼ key repeatedly tocycle through the instruments on the network, until the requiredinstrument is selected.

Note

If no other key is pressed after one minute, it is necessary topress the ▼ key to reselect the instrument for remote control.

➞ In certain installations it may be preferable to disable theremote control function on particular instruments; refer tosection 24.1 for more details.

CTRLLarge-digit display (Speed, Depth, Mega)

Analog display (Wind, Compass)

Fig 23.1 - Indication of instrument selected by the Remote Control

Two-line display (Combi, Data)

IS12 Instrument System • Part IX – IS12 Remote Control

78 E04820 Issue 1.0

Rem

ote

23.3 Keypad configurationAs the Remote Control is intended to control all instruments inthe IS12 range, the keypad is a generic design, which applies toall IS12 instrument keypad layouts (Fig 23.2 indicates therespective key positions).

Note For installations where the instruments are rear mounted, thekeypad will not be visible; please refer to the relevant usermanual for the specific keypad layout.

Fig 23.2 - Remote control key positions

23.4 Cancelling alarmsThe Remote Control will repeat any alarms sounded by theinstruments in the network. To cancel the alarm, select therelevant instrument using the ▼ key and press the equivalentkey on the Remote Control.

➞ Refer to the individual instruments regarding key sequencesfor cancelling alarms.

Instruction Manual

79E04820 Issue 1.0

Rem

ote

24 CALIBRATION24.1 Disabling remote control

On some installations it may be preferable to limit remote controlaccess to only some instruments on the network, for example:

1. On a flybridge powerboat with a set of instruments onboth steering stations, where some of the instruments wouldbe out of sight of the Remote Control user (Fig 24.1).2. On a sailboat with chart table repeaters. Some of theinstruments would be out of sight of the Remote Controluser, which would normally be positioned to control thecockpit instruments.

3. On a sailboat with a set of mast-mounted repeaters. Sincethese are more difficult to access, it may be preferable tolimit remote control to these instruments only.

4. On an installation where some instruments are rear mountedand a remote control is needed to control these only.

It is possible to disable the remote control facility on specificinstruments, which will be “ignored” by the Remote Control.

On the instrument enter Calibration mode, press or untilthe display shows “CTRL” and press .

The display will show the current setting: “ON” for remotecontrol enabled or “OFF” for remote control disabled. Thesetting can be changed using the and keys. To set theselected mode press . The diplay will then return to themain Calibration menu.


Note Any changes will affect that specific instrument only.

Main Steering Station

Flybridge

Rear-mounted instruments – remote control requiredRemote control enabled

Front-mounted instruments – no remote control requiredRemote control disabled

Fig 24.1 - Typical system with partial remote control facility


80 E04820 Issue 1.0

Rem

ote

24.2 Re-enabling control on rear-mounted instruments

Once the remote control facility has been disabled on an IS12instrument, this can normally only be re-enabled using theinstrument’s own keypad, since the Remote Controller will nowbe unable to access that instrument.

In the event that the remote control facility has been accidentallydisabled on a rear-mounted instrument (where the keypad is notaccessible), the following procedure will allow remote controlaccess to all instruments on the network:

With the power to the system off, press and hold the ▼ key onthe Remote Control while turning the power on (Fig 24.2).

The Remote Control will now temporarily be able to access allinstruments on the network, even those which have the remotecontrol facility disabled. Select the instrument which has beenincorrectly disabled and re-enable the remote control facilitythrough the Calibration menu.

Note This procedure temporarily overrides the remote control facilitysettings. If the power is then switched off and on again withoutchanging the remote control setting on the instrument in questionfirst, the instrument will revert to its previous settings.

POWER OFF

POWER ONFig 24.2 - Overriding system remote control settings

Instruction Manual

81E04820 Issue 1.0

Rem

ote

25 INSTALLATION25.1 Installation

The Remote Control/Alarm is supplied with a dash-mount clipand can be used as a fixed or a handheld control unit. The cablecan either be fed directly through the hole in the dash-mountclip, so that it is out of sight when the remote control is in theclip, or it can be routed externally through the channel at thebottom of the clip, then back up and through the dash clip,which may be more convenient if using the remote control as ahandheld device (Fig 25.1).

Note The channel at the bottom of the dash clip for externally routingthe cable is normally blanked off – this can be opened up usinga sharp knife or scalpel if required (Fig 25.2).

Concealed cable (fixed mount) Exposed cable (handheld)

Fig 25.1 - Cable routing options

Cut out cable channel

Fig 25.2 - Dash-mount clip, bottom view – cable channel

The unit is supplied with a self-adhesive drilling template; fixthis in the required position and drill the four 2.5 mm screwholes and the 11 mm hole for the cable if required (see Fig 25.1above). If fixing to GRP, countersink the four screw holes toavoid splitting the gelcoat when fitting the self-tapping screwssupplied.

Fit the dash-mount clip, feed the cable as required, and fit theRemote Control into the clip.


82 E04820 Issue 1.0

Rem

ote

25.2 Electrical installationThe Remote Control is fitted with a 2 m cable with an IS12connector fitted to the end. Simply locate a spare port in aconveniently located instrument and plug in.

If a spare port is not available an SDJ three-way joiner, availableas a separate accessory can be added along with an additionaldata cable to provide a spare port (Fig 25.3).

25.3 Unclipping the Remote ControlTo remove the Remote Control from the dash-mount clip, holdthe top of the unit and pull it out of the clip (Fig 25.4).

SDJ Three-Way Joiner

AdditionalData Cable

Fig 25.3 - Using an SDJ three-way joiner to connect the Remote Control to a system

Fig 25.4 - Removing the remote control from the dash-mount clip

Part XIS12 INSTALLATION

26 INSTRUMENT HEAD26.1 General

All IS12 instrument heads are a standard 110 x 110 mm (4.3 x4.3 in) size and can be mounted either from the front or the rear.

26.1.1 Front mountingFront mounting (Fig 26.1) is the standard method of fitting and isthe most straightforward. When mounting the instrument head, itis important to ensure that there is adequate clearance behind thebulkhead for the rear of the instrument with the cables inserted –allow at least 35 mm (1.4 in) clearance (Fig 26.2).

In addition, the instrument should not be fitted to a surface thathas a curve greater than 1 mm (1⁄25 in) across the mountingarea. If fixing to an uneven surface, care should be taken not toovertighten the screws. When choosing a location, considerationshould be given to the water integrity of the gasket seal if thesurface is not flat. The IS12 is designed to be weatherproof, butthe rear of the instrument case with its electrical connectionsshould be protected from moisture as far as possible.

Tools required for installation:

- Drill - 2.5 mm (0.09 in) drill bit- 86 mm (3.4 in) hole saw - Countersinking bit

Using the self-adhesive template supplied drill the centralaperture for the instrument case using the hole saw, thenthe four fixing holes as indicated on the template. If theinstruments are to be fixed to a GRP bulkhead, the fixingholes should be countersunk after drilling to stop thescrews splitting the gelcoat. The instrument is 110 mm(4.33 in) square, but a distance of at least 6 mm (0.25 in)should be allowed between adjacent units for the protectiveinstrument cover supplied.

Note Long term exposure to direct sunlight can damage theliquid crystal display, if left unprotected when not in use –always use the instrument cover supplied.

The easiest way to fit the keypad and the bezel to the installedinstrument head is to locate the keypad in the keyholes in thebezel and then offer this up to the instrument head, angling thebezel back slightly to prevent the keypad falling out. The bezelshould click into place when located correctly (Fig 26.3).

Instruction Manual

83E04820 Issue 1.0

Insta

llatio

n

Fig 26.1 - Front mounting

Fig 26.2 -Clearance required

behind bulkhead

35mm (1.4in) minimum

Fig 26.3 - Fitting keypad and bezel

IS12 Instrument System • Part X – IS12 Installation

84 E04820 Issue 1.0

Inst

all

ati

on

26.1.2 Rear mountingWhen the instrument is rear mounted, only the display can beseen, the main body of the instrument, including the keypad, ishidden behind the panel. This is a more elegant method ofinstallation, but does require precise cutting of the aperturesinto the bulkhead or dashboard. It is therefore recommendedthat installation is done by a professional marine installer.

The instrument can be fixed to the panel using either theself-tapping screws supplied (if the panel is thick enough), or2 mm studs fixed to the rear of the panel which align withthe four fixing holes. (Fig. 26.5).

Tools required for installation:

- Drill - A fine toothed file- 5 mm (0.2 in) drill bit - Fretsaw

To assist in cutting a precise aperture for the display, a self- adhesivetemplate is supplied with the unit.Fix the template in the correct position and drill 4x 5 mm holeson the waste side of the four corners of the aperture. Startingfrom one of these holes, carefully cut along the dotted linearound the four edges. To ensure the hole is a good fit, cutslightly inside the line (on the waste side) and then use the fileto smoothen the edges until the display fits precisely.

Note Because the keypad is not accessible with this method of mounting,the Remote Control unit (see part IX) will be required to enablecontrol of instrument functions.

27 TRANSDUCERS27.1 IS12 Speed/Depth transducerNote Please refer to manufacturer’s installation instructions

supplied with the transducer.

Fig 26.5 - Rear mounting

Fig 26.4 - Removing the bezel

To remove the bezel, simply lift the top edge of the bezelslightly to disengage the locking clips and pull away from theinstrument head (see Fig 26.4).

Instruction Manual

27.2 IS12 Wind transducer installation27.2.1 Running the cableIt is easiest to run the transducer cable if the mast is stepped. Ifthis is not possible, all necessary precautions should be taken –always use a bosuns chair and ensure all tools are securelyattached when working aloft.Apply the self-adhesive template supplied to the masthead,pointing fore–aft. Drill the fixing and cable exit holes as marked– the masthead bracket incorporates a cable clamp to secure thetransducer cable and provide strain relief (Fig 27.1).

Note The cable can be fed through the side of the mast if this ismore convenient.

It is recommended that a grommet is used to avoid damage thecable where it passes through the mast. Allow at least 75 mm(3.0 in) of cable at the masthead for the transducer connection.For boats with an aluminium mast, a channel is normallyprovided inside the mast section for running electricalcables. This will usually have a tag line or “mouse” (i.e. alength of line running the length of the mast to assist inpulling through cables). If not, the cable will need to be feddown and drawn out the bottom by hand.For boats with a wooden mast the cable can be run down theoutside of the mast held in place with galvanised cable clips.

27.2.2 Fitting the masthead bracket1. Route the transducer cable in the strain relief channels inthe bracket and out the back. If the cable exits through the sideof the mast, route the cable in one of the blanked off sidechannels and out the back (Fig 27.2). 2. Use a sharp knife or scalpel to remove the blanking pieceand open up the channel.3. Attach the masthead bracket with the screws provided.Ensure the bracket is mounted the correct way round, so thatthe wand will be pointing in the correct direction (Fig 27.3).

The transducer can be mounted facing aft if required, but it willbe necessary to set the transducer orientation to “AFT” in theCalibration menu (see section 15.2 for more details).

Cable exit pointMASTHEAD

Cable clampchannelsAllow 75mm (3.0") of

cable at the masthead

Fig 27.1 - Drilling exit hole for transducer cable

Gasket

Fig 27.2 - Cable channel exit points

Mast Top Cable Exit

Mast Side Cable Exit

Cut outblanking

piece

85E04820 Issue 1.0

Insta

llatio

n

Fig 27.3 - Fitting themasthead bracket

35m

m (

1.38

")

20mm (0.78")

BOW


86 E04820 Issue 1.0

Inst

all

ati

on

27.2.3 Assembling the transducerThe vane and cups assemblies are packed separately; fit the vaneto the transducer so that the shaft on the top of the transducerfits correctly into the vane (the shaft is keyed so that it will bealigned correctly). Screw the counterweight in just far enoughto lock the vane into place (Fig 27.4).

Note Check that the vane rotates freely – do not overtightenthe counterweight or it may restrict the vane’s movement.

The anemometer cups fit to the base of the transducer body in asimilar way (Fig 27.5). Ensure the cups are pushed fully homeon the spindle. Once fitted, they are held in place by a grubscrew, which should be tightened (using the Allen key supplied)enough to hold the cups in place without restricting theirmovement.

Note Check that the cups rotate freely.

Fig 27.4 - Attaching the wind vane

1) Fit the vane

2) Screw in counterweight (do not overtighten)

Fig 27.5 - Attaching anemometer cups

1) Fit the cups 2) Tighten grubscrew

Ensure the shaft isoriented correctly

27.2.4 Attaching/removing the transducerThe masthead transducer is attached to the masthead bracketusing a simple quick-release clamp system.

1. Slide the locating pegs on the rear of the transducer baseinto the slots on the masthead bracket.2. Rotate the transducer down onto the masthead bracket.3. The transducer base will then lock into place (Fig 27.6 page 87).

Caution Ensure the quick-release clip is properly engaged bypulling it fully forward.

Instruction Manual

87E04820 Issue 1.0

Insta

llatio

n

Fit the transducer cable to the socket in the back of the mastheadtransducer.

Note To avoid damage, it is recommended that the masthead transducerbe taken down at the end of the season if the boat is to be laidup or lifted out.

Simply remove the transducer cable, pull the release clip backand lift the transducer off the masthead bracket (Fig 27.7).

Caution To avoid corrosion of the electrical contacts, always fitthe cover supplied over the end of the masthead cable.

Note If the boat is fitted with more than one IS12 instrument, it shouldbe noted that it is not necessary to plug the transducer cabledirectly into the back of the instrument – any spare network portcan be used.

27.3 Compass transducerThe compass should be positioned as close to the centerline ofthe boat as possible (Fig 27.8), in one of four possible orientations.If the boat is GRP or wooden, the compass can be mounted belowdeck, but must be at least 1 m (3 ft) away from any metallicobjects such as stereo speakers, heating units, etc.

If the boat has a metal hull (this includes ferro-cement), thecompass must be mounted on a mast or pole between 1 and 2meters (3–7 ft) above deck.

Fig 27.6 - Attaching masthead transducer

Fig 27.7 - Removing masthead transducer

Pull back

Lift

Lock

Locatingpeg

1 2 3

1 2

Fig 27.8 - Ideal Compass

transducer location


88 E04820 Issue 1.0

Inst

all

ati

on

When mounting, make sure that the compass is the right wayup and is level. The compass unit can be screwed to a verticalbulkhead using the two No. 6 x 3/4 in self-tapping screwsprovided (Fig 27.9).

Fig 27.9 - Mounting the Compass transducer

BOTTOMVIEW

SIDEVIEW

BOW

BOW

Note If screwing into GRP, drill pilot holes and countersink themproperly, which will stop the gelcoat splitting when the screwsare tightened.

28 ELECTRICAL28.1 Connecting IS12 instruments

28.1.1 IS12 Combi (Depth/Speed)Note The screen wire of the Depth transducer should be crimped to

the same terminal as the black (BK) wire.

The transducer wires are colour coded and correspond tothe clearly marked terminals on the rear of the instrument(Fig 28.6).

Fig 28.6 - Combi Transducer connections

Speed - Depth -WH White BK BlackGN Green +ScreenRD Red BU BlueSC ScreenBR Brown

Instruction Manual

89E04820 Issue 1.0

Insta

llatio

n

Fig 28.7 - Depth transducer connections

BK Black+Screen

BU Blue

Fig 28.8 - Speed transducer connections

WH WhiteGN GreenRD RedSC ScreenBR Brown

28.1.3 IS12 Speed/Log The transducer plugs directly into the back of the instrument.To assist in feeding the cables through the boat, the transduceris supplied with bare wire ends. Once the cables have been fed upto the instrument, the transducer is connected to the instrumentusing the crimp terminals supplied. The transducer wires arecolour coded and correspond to the clearly marked terminals onthe rear of the instrument (see Fig 28.8).

28.6.4 IS12 WindThe transducer is connected to the Wind instrument using thespare network port on the rear of the instrument (Fig 28.9)

Fig 28.9 - Wind transducer connection

28.1.2 IS12 DepthThe transducer plugs directly into the back of the instrument. To assist infeeding the cables through the boat, the transducer is supplied with barewire ends. The transducer wires are colour coded and correspond to theclearly marked terminals on the rear of the instrument (Fig 28.7).

Note The screen wire should be crimped into the same terminal as theblack (BK) wire.


90 E04820 Issue 1.0

Inst

all

ati

on

28.6.5 IS12 Compass (NMEA In)The IS12 Compass transducer is connected to the network port.Alternatively, heading information may be supplied from anexternal source via the NMEA input. The two terminals on therear of the unit (see Fig 28.10,) are marked NMEA IN + (Data)and NMEA IN - (Common). These should be connected to theNMEA OUT connections of the interfaced equipment.

The IS12 Compass can process the following NMEA sentences:

HDG Mag heading, plus deviation and variationVHW Heading, Mag, and True

Note The Compass transducer should not be used if heading data isbeing supplied via the NMEA input.

28.1.6 IS12 Data (NMEA Out)The Data instrument features an NMEA0183 output – the Datainstrument is interfaced to external equipment using the crimpterminals supplied. The two terminals on the rear of the unit(Fig 28.11) are marked NMEA OUT + (Data) and NMEAOUT - (Common). These should be connected to the NMEAIN connections of the interfaced equipment.

28.1.7 IS12 MegaThe Mega instrument features an NMEA0183 input and output,and is interfaced to external equipment using the crimp terminalssupplied.

The two terminals on the rear of the unit marked NMEA OUT+ (Data) and NMEA OUT - (Common) should be connected to

Fig 28.10 - NMEA In connections

Fig 28.11 - NMEA Out connections

Instruction Manual

91E04820 Issue 1.0

Insta

llatio

n

Fig 28.12 - Mega NMEA connections

the NMEA IN connections of the interfaced equipment. Thetwo terminals marked NMEAIN + (Data) and NMEAIN - (Common)should be connected to the NMEA OUT connections of theinterfaced equipment (Fig 28.12).

When in IS12 mode, the Mega can receive and display incomingnavigational data via NMEA (not NMEA instrument data!) andwill output IS12 instrument data (depending on the master unitsin the system).

➞ For further details of NMEA sentences received/transmitted,see section 21.3.4.

Note Only one instrument per IS12 system can input NMEA data.

The Mega instrument can be used as a stand-alone NMEArepeater outputting/receiving with no IS12 master units. Ifusing the Mega in this way, the operation mode should be set toNMEA Mode 2 (see section 21.3.2).

28.7 Electronic interference suppressionIS12 has been designed to minimize the effects of interferencegenerated by the engine alternator. However, precautions shouldstill be taken by routing the cables away from the enginecompartment. Do not run the cables down trunking carryinghigh current cables. The transducer cable should also be keptseparate from the boat’s radio antenna cable if possible.

Engines with spark ignition—also some refrigerators—shouldbe fitted with suppressors. Your local agent should be able toadvise on this and supply suppression kits where necessary.

28.8 Magnetic interferenceDeviation of the main ship’s compass is caused by objectswhich interfere with the earth’s magnetic field being placed inits near proximity.

The first link in the IS12 system is the power cable, whichshould be connected to the boat’s 12V DC supply via a 3 Ampbreaker or fuse as follows:

Red wire - 12V DCBlack wire - 0V

Note Only one power cable is required in an IS12 system, but powermust be supplied via an IS12 power cable (with a redconnector end), or the system will not function.

29.1.2 Network terminationThe IS12 system is based around a high-speed data bus network.Although this is very robust, on very large or complex systemswith many instruments the system may need to be properlyterminated to ensure the integrity of the network. For thispurpose a network terminator (Fig 29.3) is supplied with


92 E04820 Issue 1.0

Inst

all

ati

on

Normally a safe distance for instrument installation would be30 cm (1ft) from the ship’s main compass. For safety reasons itis recommended that a check is carried out; temporarily situatethe working display in the proposed position to ascertain theeffect that the instrument might have on the particular ship’scompass while in operation.

29 NETWORK29.1 Installing an IS12 network

IS12 instruments are “daisy chained” together, with eachinstrument linking to the previous one by a single cablecarrying power and data (Fig 29.1).

The cable plugs into either of the two circular network ports onthe rear of the instrument. The cable connectors are keyed sothat they will always be correctly oriented when inserting thecable into the instrument – the flattened edge of the connectorshould be facing down when inserting (see Fig 29.2).

Fig 29.3 - Network terminator

Fig 29.2 - Rear connections

Flattened edge

Networkbus ports

Fig 29.1 - IS12 “Daisy chain”cable system

Instruction Manual

93E04820 Issue 1.0

Insta

llatio

n

Fig 29.4 - Creating cable spurs using SDJ three-way joiner

Three-wayjoiner SDJ

Spur -max cablelength 5 m

Spur -max cablelength 5 m

Terminator fitted toend of longest spur

some IS12 instruments. The terminator simply plugs intothe last free network port in the daisychain. The terminatoronly needs to be fitted under certain circumstances.

The terminator is not required if:a) The Compass instrument is used as a stand-alone

instrument (and no other IS12 instruments are fitted).b) There is already a terminator fitted to the system. There

should only be one terminator fitted per system.

c) The system includes an IS12 Wind transducer. The Windtransducer has an inbuilt network terminator.

d) The total system cable length (excl. the power cable) isless than 5 m. A small system does not require a terminator.

If the installation does not meet any of the above criteria, theterminator should be fitted to the spare network port at the endof the longest cable run.

Any unterminated spurs created using the SDJ three-way joinermust be less than 5 m (16.4 ft) in length (see Fig 29.4).

To ensure a good connection when fitting the terminals to theinterface cable, fold back the exposed wires over the insulationbefore inserting into the terminal (Fig 28.5). Use a good qualitycrimp tool to crimp the terminals.

Fold wireend back

Ensure bare wiresare not visible

Fig 29.5 - Crimp terminals

Instruction Manual

95E04820 Issue 1.0

Ap

pen

dix

Part XI

APPENDIX

30 ADDITIONAL INFORMATION30.1 TroubleshootingGeneral Symptoms Possible cause Remedy

No display on any heads • Faulty connection to power • Check power connectionin the system • Fuse has blown • Replace fuse and check

power supply current

No display on one or • IS12 data cable loose or broken • Check cable linked to firstmore heads in system faulty unit. Replace if

necessary

Occasional poor • Electrical interference from other • Fit interference suppressorsperformance equipment on boat (see section 28) to equipment responsible

Display shows “– – –” • Faulty connection to transducer • Check transducer connection• Data sources not selected (see section 28)

• Reset data source

Display shows “00.0” • Faulty connection to transducer • Check transducer connectionwhile boat is moving • Impeller is fouled • Clean transducer

Wind angle is not accurate • Wind angle offset needs calibrating • Refer to section 12.2 & 12.3

Display shows “– – –” • Master unit not present in system • Data can only repeat data thatis available on the network

• Faulty connection to master unit • Check data cable links

No NMEA output • NMEA connections reversed • Check NMEA connections

Display shows “– – –” • Master unit not present in system • Mega can only repeat data that• Required NMEA sentence not is available on the network

available • Refer to section 21.2.4• Faulty connection to master unit • Check data cable links

No NMEA output • NMEA connections reversed • Check NMEA connections

Remote cannot select • Remote control facility disabled • Re-enable remote controlinstrument on instrument facility on instrument (see

• Faulty connection to master unit section 24.1)

Remote cannot select • IS12 data cable lose or broken • Check cablesany instrument and • Terminator not fitted • Fit terminator to systemdouble beeps

Combi and Speed Instruments

Wind Instrument

Data Instrument

Remote controller

Mega Instrument

Compass is not accurate • Transducer needs calibrating • Refer to section 15

Compass Instrument

IS12 Instrument System • Part XI – IS12 Appendix

96 E04820 Issue 1.0

Ap

pen

dix

These simple checks should be carried out before seeking technicalassistance and may save time and expense. Before contacting yourservicing agent please note the unit’s serial number..

30.2 Spares & accessoriesThe following spares and accessories are available from localSimrad agents.

- Remote Controller - Three-Way Cable Joiner- Power Cable 2m - Spare Compass Transducer- IS12 Cable 0.3m - Spare Masthead Transducer- IS12 Cable 2m - Spare Depth Transducer- IS12 Cable 5m - Spare Speed Transducer- IS12 Cable 10m - Spare Bezel & Keypad- IS12 Mast Cable 30m - Spare Sun Cover

Instruction Manual

97E04820 Issue 1.0

Ap

pen

dix

20mm(0.78in)

17mm(0.67in)

110mm (4.3in)

110m

m (

4.3i

n)

30.3 Dimensions

66 mm(2.6 in)

94 mm

(3.7 in)46 m

m(1.8 in)

75mm (3.0in)

50mm (2.0in)

89m

m (

3.5i

n)

125m

m (

4.9i

n)

75mm (3.0in)

50mm (2.0in)

89m

m (

3.5i

n)

440mm (17.3in)

180m

m (

7.0i

n)

80mm (3.2in)

43m

m (

1.7i

n)17mm

(0.67in)

55mm (2.15in)

110m

m (

4.3i

n)

IS12 Instrument Remote Control/Alarm

Wind mastheadIS12 Compass

Transducer

IS12 Speed Transducer IS12 Depth Transducer

IS12 Instrument System • Part XI – IS12 Appendix

98 E04820 Issue 1.0

Ap

pen

dix

30.4 SpecificationSupply voltage 12V (9–16V) DCCurrent consumption Light Off - 40mA

Light On - 60mAMax units per system 32Ambient temp range -10°C to +55°C (14°F to 131°F)

IS12 CombiTransducer frequency 200kHzSounding range 0.6 –100m (2–327ft)Max depth resolution 0.1m / 1 ftSpeed range 0–60 Kts, mph, KmhMax speed resolution 0.1 Kts, mph, KmhSea temperature 0–37ºC (32–99ºF)

IS12 DepthTransducer frequency 200kHzSounding range 0.6 –100m (2–328ft)Max resolution 0.1m / 1 ft

IS12 SpeedSpeed range 0–60 Kts, mph, KmhMax speed resolution 0.1 Kts, mph, KmhSea temperature 0–37ºC (32–99ºF)

IS12 WindWind speed range 0–99.9 Kts, m/s, mph (0–12 BFT)

IS12 CompassMax resolution 1°

30.5 Service & warrantyYour equipment should seldom need servicing, although it willbenefit from an application of silicone or Teflon grease to thecontacts each season.

If it is necessary to have a unit repaired, please contact your localauthorised Simrad dealer.

For worldwide warranty details and a list of authorised Simradagents please refer to the Warranty Card supplied with this unit.

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

simrad is12 - nuovamarea.comnuovamarea.com/files/product manuals/simrad/is12 system.pdf · is12...

Documents