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I Preface
The Rudder Feedback Unit is a high quality, ruggedized, easy to install rudder feedback unit.
•
Thoroughly read this instruction manual before installation and operation of the equipment.
•
We recommend to keep this manual nearby the equipment to ensure ready access to it.
I.1 Revision History
Revision No.
V1.0
I.2 Glossary
The glossary contains a list of definitions and a list of abbreviations.
I.2.1 Definitions
The meaning of standard definitions as used in this manual are explained in Table 1: Definitions on page 4.
Redundant
Heading users
Hardware
LEDs
Central alarm system /
Bridge watch monitoring
NMEA protocol
Talker
Listener
ISO GND
Grounding point/stud
Printed Circuit Board
(Galvanic) isolated
CAN bus
Reverse polarity protection
ROT signal
Heading/bearing repeaters
4 | Preface
Description
First issue
A device that is equipped with multiple part of the same type, for example a double pow-
er supply. This equipment will continue to function when one of the redundant part fails.
Navigation equipment that uses heading/course information for functioning.
The physical parts of the AlphaLine instrument.
Light-emitting diodes. These are used for signaling statuses of hardware and software
signals to the user.
System that is connected to all vital systems on a ship and that is able to give a central-
ized indication of the (alarm)status of all connected systems.
Protocol standard for transmitting and receiving of asynchronous serial data sentences.
Device which transmits data. This is usually called transmitter or TX.
Device which receives data. This is usually called receiver or RX.
Isolated Ground. This is a ground connection to be used for reference signal. It is differ-
ent from EARTH and should normally not be connected to EARTH.
Point on the chassis of the AlphaLine instrument which should be connected to the ship's
mass.
A printed circuit board, or PCB, is used to mechanically support and electrically connect
electronic components using conductive pathways, or traces, etched from copper sheets,
laminated onto a non-conductive substrate.
Electrical separation of two circuits. There is no current flowing directly from one circuit
to another. Electrical energy and/or information can still be exchanged between the sec-
tions by other means, such as by induction or by optical means (like transformers or opto
couplers).
Controller Area Network. This is a network based serial bus system used for exchanging
information. It is the advanced version of RS485/422 serial buses.
This is a part of the power supply hardware that prevents any damage to the equipment
when the power supply is connected to the wrong polarity.
Rate Of Turn (ROT) signal indicates the course change of a ship in degrees per minute.
This signal can be analog using voltage or current, or can be an NMEA data signal.
Navigation type of instruments displaying the heading/course of a ship.
Date
2 March 2016
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