SperryMarine NAVITWIN IV Manual

Northrop Grumman Sperry Marine B.V. (Representative Office)
Woltmanstr. 19 • D-20097 • Hamburg, Germany
Tel.: [phone] • Fax: [phone] • E-mail: [e-mail]
Operation, Installation and Service Manual
Off Hdg.
10˚
Set Hdg.
246.0
DISPLAY DATA
MONITOR
ALARM
NO ACTIVE
ALARM
Hdg. Diff
10˚
Gyro 1
Gyro 2
GYRO
1
GYRO
2
GYRO
3
MAGN
COMP
246.8
246.7
246.8
247.0
12.8 kn
AUTO
SPEED
NAVITWIN IV
Heading Management System
056344/A, 16 Mar 2006

056344/A NAVITWIN IV
© 2006 Northrop Grumman Sperry Marine B.V.
This document and the information herein is the intellectual property of Northrop Grumman
Sperry Marine B.V. [NGSM BV] and it’s associate companies and may not be copied or repro-
duced without the express permission of NGSM BV.
Specifications were correct at time of press but may be varied in accordance with NGSM BV’s
policy of continuous product development.
Any technical content should be verified with NGSM BV.
Sperry Marine, with worldwide headquarters in Charlottesville, VA, and major engineering and
support offices in Melville, NY, New Malden, England, and Hamburg, Germany, is part of the
Northrop Grumman Electronic Systems sector.
Revision Record
Rev. Date Remarks
A 16 Mar 2006 initial release

NAVITWIN IV 056344/A
i
Safety Instructions
Safety Notice Conventions
The following safety notice conventions are followed throughout this
manual:
DANGER A Danger notice contains an operating or main-
tenance procedure, practice, condition, state-
ment, etc., which, if not strictly observed, will
result in injury or death of personnel.
WARNING A Warning notice contains an operating or
maintenance procedure, practice, condition,
statement, etc., which, if not strictly observed,
could result in injury or death of personnel.
CAUTION A Caution notice contains an operating or main-
tenance procedure, practice, condition, state-
ment, etc., which, if not strictly observed, could
result in damage to, or destruction of equip-
ment.
Note A Note contains an essential operating or main-
tenance procedure, condition or statement,
which is considered important enough to be
highlighted.
Special safety symbols may be used in this
manual to indicate:
Risk of electrical shock.
Used in conjunction with a Danger or Warning
notice.
Electrical components are sensitive to electro-
static discharge.
Used in conjunctin with a Caution notice.

056344/A NAVITWIN IV
ii
General Safety Information for the Operator
General Safety Information for Service Personnel
WARNING NAVITWIN IV permits to activate a heading source as soon as heading
data is received from the respective device.
Make sure that a gyrocompass has settled before using its heading as
the reference for heading control systems, RADAR, ECDIS, etc.
A magnetic heading source should be made active only in case of failure
of the gyrocompass(es).
CAUTION When the NAVITWIN IV is used in a system containing the fiber-optic
gyrocompass NAVIGAT 2100:
At each new alignment (restart) of the NAVIGAT 2100, make sure that the
compass aligns correctly, using valid speed and position data.
It is required to confirm the correct input data at the NAVIGAT 2100 con-
trol and display unit when a new alignment is carried out.
WARNING Hazardous voltage is present inside the NAVITWIN IV.
Danger of electrical shock or burn when the CCFL inverter connections
are touched.
Disconnect power before opening the device.
When servicing the device without the back cover installed, do not touch
the PCB while power is applied to the board.
CAUTION The NAVITWIN IV contains electrostatic sensitive components.
Electrostatic discharge may permanently damage components.
When servicing the NAVITWIN IV, take precautions to prevent electro-
static discharge. Avoid touching any of the electronic circuitry.

NAVITWIN IV 056344/A
iii
Contents
Chapter 1: Introduction
1.1 Design and Main Features........................................................................ 1-1
1.2 Example System Configurations ............................................................. 1-2
Standard NAVIGAT Dual Gyrocompass/TMC System ........................... 1-2
Triple Gyrocompass/TMC System ........................................................... 1-3
Independent Off Heading / Heading Diff. Alarm Device......................... 1-4
1.3 Technical Data............................................................................................ 1-5
Chapter 2: Operation
2.1 Display and Operating Keys ..................................................................... 2-1
Display ....................................................................................................... 2-1
Operating Keys .......................................................................................... 2-1
2.2 External control devices ........................................................................... 2-2
2.3 Power-up Sequence .................................................................................. 2-2
2.4 Selecting the active heading source ....................................................... 2-3
2.5 Selecting additional display data ............................................................ 2-4
2.6 Adjusting the display brightness............................................................. 2-4
2.7 Optional Functions.................................................................................... 2-5
Muting Alarms Remotely.......................................................................... 2-5
Resetting/Acknowledging a Central Watch Alarm .................................. 2-5
Reversing the Heading Display (180° offset)........................................... 2-5
External Dimming ..................................................................................... 2-5
2.8 Operating Menu ........................................................................................ 2-6
Entering and Quitting the Menu Mode.................................................... 2-6
Navigating the Menu ................................................................................ 2-7
Selecting Parameter Settings ................................................................... 2-8
Editing Parameter Values ......................................................................... 2-8
2.9 Off Heading Monitor Settings.................................................................. 2-9
2.10 Heading Diff. Monitor Settings .............................................................. 2-10
2.11 Manual Settings Menu ........................................................................... 2-11
Manual Settings – Overview ...................................................................2-11
Manual Settings – Parameters ............................................................... 2-13
Speed ........................................................................................... 2-13
Mag Variation .............................................................................. 2-15
Rate of Turn ................................................................................. 2-16
North Sp. Err. Corr....................................................................... 2-16
2.12 User Setup ............................................................................................... 2-17
User Setup – Overview ........................................................................... 2-17
User Setup – Parameters ........................................................................ 2-18
Date & Time................................................................................. 2-18
Magn. Cal. Tab............................................................................. 2-18
Version Info ................................................................................. 2-19