Kongsberg Simrad IS12 User manual

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Instruction Manual
III
Simrad IS12
Mega Instrument
MANUAL

IS12 Mega
IV E04252 Issue 1.0 9/8/02 MDL
The technical data, information and illustrations contained in this publication were to the best of our knowledge 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 development and 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 has been taken to make it as com-
plete and accurate as possible.
©2002 Simrad Ltd

CONTENTS
1GENERAL1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 IS12 Network System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2OPERATION
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Data Page Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.1 Calibration & Settings . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.2 Display Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.3 Information Required . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.4 Cancelling Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.5 Apparent & True Wind Angle . . . . . . . . . . . . . . . . . . . 13
2.2.6 VMG (Velocity Made Good) . . . . . . . . . . . . . . . . . . . . 14
2.2.7 XTE (Cross Track Error) . . . . . . . . . . . . . . . . . . . . . . . 15
2.3 Backlighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.4 Remote Control Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3CALIBRATION
3.1 Page Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2 Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.1 IS12 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.2 NMEA Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 Local & Network Backlighting . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4 Disable Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4INSTALLATION
4.1 Instrument Head Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1.1 Front Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1.2 Rear Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2 Electrical Installation - IS12 Mode . . . . . . . . . . . . . . . . . . . . . . 26
4.2.1 Network Termination . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2.2 NMEA Input/Output . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3 Electrical Installation - NMEA Mode . . . . . . . . . . . . . . . . . . . 29
4.4 Electronic Interference Suppression . . . . . . . . . . . . . . . . . . . . 30
5APPENDIX
5.1 Data Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2 NMEA Sentences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.3 Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.4 Spares and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.5 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.6 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.7 Service & Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Instruction Manual
V

1 GENERAL
1.1 Introduction
The Simrad IS12 System is a flexible modular series of instru-
ments that offer large, clear displays, easy to operate functions
and robust, weatherproof construction. The IS12 Mega is a
multifunction data repeater that can display information from
any master IS12 unit in the system, or act as an NMEA repeater.
The IS12 Mega is supplied complete with a 5m data cable to
enable it to be linked to an existing system. All functions are
easily accessed, thanks to IS12’s intuitive, user friendly control
system.
Thank you for choosing Simrad.
If you are pleased with your instrument we hope you will be
interested in our range of marine electronic equipment, which
is manufactured to the same high standards as IS12. Please
contact your nearest Simrad Agent for a catalogue showing our
increasing range of high tech navigational instruments, GPS,
autopilots, Radar, Fishfinders and VHF radio sets.
Simrad operate a policy of continual development and reserve
the right to alter and improve the specification of their prod-
ucts without notice.
IS12 Mega
6E04252
MEGA
LIGHT ••
Fig 1.1 - IS12 Mega Instrument
INFO

1.2 IS12 Network System
The IS12 system is built around a high speed bus networking
system that allows instruments to be easily interconnected and
share data.
All units are interconnected and powered using a standard sin-
gle cable (Fig 1.2) -
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Additional instruments can be added to the system to act as
repeaters, for example at the chart table of a sailboat or the fly-
bridge of a powerboat. Thus, as shown in the example above,
the Mega instruments repeat the information from the main
instruments.
Fig 1.2 - IS12 Network System
COMBI
CONTROLLER
ALARM
DATA COMPASS
MEGAMEGA WIND
WIND Tx
COMPASS Tx

2 OPERATION
2.1 General The IS12 Mega is a large digit multifunction repeater that can
display data either from any IS12 master unit (Fig 2.1) -
IS12 Mega
8E04252
or from other equipment via NMEA0183 (Fig 2.2) -
Fig 2.1 - Mega displays as IS12 system repeaters
Fig 2.2 - Mega displays as NMEA repeaters
MEGA MEGA MEGA
IS12 SPEED IS12 DEPTH IS12 WIND

Press the INFO key to cycle through the data pages on the
Mega instrument -
Boat Speed* ¬
Log ¬
Trip ¬
Water Temperature ¬
Average Speed ¬
Maximum Speed ¬
Race Start Timer ¬
Depth* ¬
Shallow Alarm Setting ¬
Deep Alarm Setting ¬
AWA* - Apparent Wind Angle (0-180º) ¬
AWA - Apparent Wind Angle (0-90º relative to bow/stern) ¬
AWS* - Apparent Wind Speed ¬
TWA - True Wind Angle (0-180º) ¬
TWA - True Wind Angle (0-90º relative to bow/stern) ¬
TWS - True Wind Speed ¬
TWD - True Wind Direction ¬
VMG - Velocity Made Good ¬
High Wind Alarm Setting ¬
MAGº* - Magnetic Compass Bearing ¬
TRUEº - 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 ¬
*These pages are factory preset to “on” (see section 3.1).
NOTE Although Lat & Long cannot be displayed by the Mega, this
data is converted to IS12 format and can be displayed on any
IS12 Data display in the system.
Data will only be displayed on a page if a master unit out-
putting this information is linked to the Mega instrument. If the
data is not available, the instrument will show “---” (Fig 2.3) -
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Fig 2.3 - No data received
MEGA

IS12 Mega
10 E04252
Individual data pages can be switched off if necessary to avoid
having to cycle through pages that have no incoming data -
refer to section 3.1 for further details.
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO

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MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•
MEGA
LIGHT •
•INFO
MEGA
LIGHT •
•INFO INFO
Fig 2.4 - All data pages available

IS12 Mega
12 E04252
2.2 Data Page Information
2.2.1 Calibration & Settings
No control or calibration of the incoming data is possible. To
adjust any settings (eg depth alarms) or activate any functions
(eg race countdown timer), use the relevant master unit.
2.2.2 Display Units
The units of measurement used on the data pages are dictated
by the incoming data - to change, select the required display
units on the master unit.
2.2.3 Information Required
Several of the data pages require information from two or more
sources in order to process the data sentence - for example, to
calculate True Wind data, both Wind and Boat Speed informa-
tion are required. Please refer to section 5.1 for full details of
the incoming information required for each data page.
2.2.4 Cancelling Alarms
If an alarm is triggered by a master unit, the Mega will switch
to the relevant data page. The alarm will sound on the Mega
and the alarm icon and top line of the display will flash (Fig
2.5) -
MEGA
LIGHT ••
INFO
To cancel the alarm, press any key.
NOTE Any alarms originating from an IS12 master unit will cancel
themselves after 15 seconds, but if the incoming information
still exceeds the alarm setting threshold, the alarm will trigger
every 30 seconds until cancelled.
Fig 2.5 - Alarm display

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2.2.5 Apparent & True Wind Angle
There are two display options for each of the above pieces of
data. The first is a standard 0-180º display which shows the
wind angle relative to the boat and the current tack (Fig 2.6) -
MEGA
LIGHT ••
Fig 2.6 - “Full” wind angle display
INFO
MEGA
LIGHT ••
Fig 2.7 - “Close Hauled” wind angle display
INFO
The second option shows the wind angle as 0-90º, relative to
the bow or stern of the boat (Fig 2.7) -
- ctd

IS12 Mega
14 E04252
When showing the close hauled wind angle, the graphic on the
left of the display indicates the direction of the wind.
When sailing close hauled, the digits show the wind angle
measured from the bow of the boat (Fig 2.8) -
When running, the digits show the wind angle measured from
the stern, indicating how close the boat is to gybing (Fig 2.9) -
Running, starboard tack
Running, port tack
Close hauled, port tack Close hauled, starboard tack
Fig 2.8 - Wind direction indicator - Close Hauled
Fig 2.9 - Wind direction indicator - Running
2.2.6 VMG (Velocity Made Good)
The VMG page is generated by the Mega itself. In order for
this information to be generated, Boat Speed, Apparent Wind
Angle and Apparent Wind Speed data are required.
The top line of the display will show “VMG” when close hauled
and flashes “-VMG-” when running downwind (Fig 2.10) -
MEGA
Fig 2.10 - VMG display
MEGA
VMG Close Hauled (Upwind)
VMG Running (Downwind)

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2.3 Backlighting
The backlighting illuminates the display and the keys, with
five levels of brightness.
To switch the backlighting on, press the LIGHT key. The dis-
play will illuminate and the large digits will show the current
lighting level (Fig 2.12) -
LIGHT •• INFO
Fig 2.12 - Turning Backlighting On
•INFO •
LIGHT
2.2.7 XTE (Cross Track Error)
The Cross Track Error (XTE) is the amount of deviation from
the ideal track to the target waypoint displayed as a distance
from the track.
The arrow on the top line of the display indicates the direction
of the error from the track (Fig 2.11) -
MEGA
WPT 2
WPT 1
0.41nm
Fig 2.11 - XTE display

IS12 Mega
16 E04252
Press the (• RIGHT) key to increase the brightness (max 5),
(• LEFT) to decrease it (min 1), (INFO) to accept the select-
ed brightness or (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. 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. See Section 3.2 for more details.
2.4 Remote Control / Alarm Option
The optional remote control allows all functions of each instru-
ment to be remotely controlled. The keypad labelling corre-
sponds directly with that of the Mega instrument (Fig 2.13) -
Fig 2.13 - IS12 Remote Control
Any alarms sounded are also repeated on the remote control.
If required, remote control functionality can be disabled on the
Mega instrument so that the Remote Control will “ignore” it.
Refer to Section 3.3 for more details.
MEGA
LIGHT •
•INFO
Select
Instrument

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3CALIBRATION
To protect the calibration functions, these are held in a hidden
menu. To enter calibration mode, press and hold the LIGHT
key (Fig 3.1) -
Once in calibration mode, pressing the (• LEFT) and
(• RIGHT) keys will cycle through the available calibration
options -
- Page Configuration (Section 3.1)
- Operation Modes - IS12/NMEA (Section 3.2)
- Local / Network Backlighting (Section 3.3)
- Disabling Remote Control Facility (Section 3.4)
To exit calibration mode, press and hold (LIGHT).
MEGA
LIGHT •• INFO
Fig 3.1 - Entering Calibration Mode
•INFO •
LIGHT

IS12 Mega
18 E04252
3.1 Page Configuration
To avoid having to scroll through data pages that have no
incoming information, or to set the Mega to display only select-
ed information available, individual data pages can be disabled
using this function.
Enter calibration mode - the display will show PAGES CAL -
and press (INFO) . The current data page and its display
status will be shown (Fig 3.2) -
MEGA
LIGHT •• INFO
Fig 3.2 - Page configuration status
“On” indicates that this data page is currently enabled. To
scroll through the data pages and view their configuration sta-
tus, press the and keys.
To toggle this page on/off, press INFO. With the page dis-
abled, it will not be displayed when scrolling through the data
pages.
Press to advance to the following data page.
Press LIGHT to accept the changes and exit to the calibration
menu.

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3.2 Operation Modes
There are two modes of operation for the Mega instrument
depending on the installation and equipment it is to be used
alongside.
3.2.1 IS12 Mode (Mode 1)
This is for use when the Mega is to be used as part of an IS12
instrument system. In this mode, the Mega will display the fol-
lowing data -
- IS12 data present on the system
- Processed* navigational data via the IS12 network
- Incoming navigational data via NMEA0183
* i.e any nav data received and converted to IS12 data format by another piece of equipment
on the network.
In this mode, any third party navigational master units con-
nected to the Mega via the NMEA In terminals will be repeated
by the Mega display and this data will then be passed onto the
IS12 network. Incoming NMEA instrument data (i.e speed,
depth, wind etc) cannot be displayed.
NOTE Only one instrument can receive NMEA data in an IS12
instrument system.
NOTE If the same item of data is already available on the IS12
network then the incoming NMEA sentence is not processed -
IS12 network data always takes precedence over NMEA data.
The NMEA Out terminals will transmit the following data -
- IS12 instrument data
Fig 3.3 - Installation example - IS12 Mode
NMEA In
Nav Data
NMEA Out
Instrument Data
IS12
Instrument Data
& Converted
Nav Data

IS12 Mega
20 E04252
3.2.2 NMEA Mode (Mode 2)
This mode should be selected if the Mega instrument is to be
used as an NMEA data repeater with no IS12 master units. In
this mode, the Mega will display the following data -
- NMEA0183 instrument data
- NMEA0183 navigational data
In this mode only the NMEA terminals are used to link the
Mega to any master units - the network ports are only used to
supply power to the display. No data is received or transmitted
to any IS12 units connected to the Mega via the network ports.
The NMEA Out terminals will retransmit the following data -
- NMEA0183 instrument data
- NMEA0183 navigational data
NMEA In
Instrument & Nav Data NMEA Out Instrument & Nav Data
Fig 3.3 - Installation example - NMEA Mode
12v in
To switch between IS12 & NMEA modes, enter calibration
mode 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.
NOTE Press to exit to the main calibration menu at any point.