B&G Hydra 2000 User manual

Hydra 2000 User Manual
HB-0844-02
USER MANUAL
Premier Way, Abbey Park
Romsey, Hampshire, S051 9AQ
England
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Fax: [phone]
www.bandguk.com

Hydra 2000 User Manual
HB-0844-02
USER MANUAL
CONTENTS
Product Liability and Safety Warnings
Record of Amendments
PART 1 -INTRODUCTION
PART 2 -OPERATING INFORMATION
PART 3 - CALIBRATION
PART 4 - INSTALLATION INFORMATION
PART 5 -OPTIONS
PART 6 -DIAGNOSTIC DATA
APPENDIX 1 CALIBRATION DATA

Hydra 2000 User Manual
HB-0844-02
PRODUCT LIABILITY AND SAFETY WARNINGS
PRODUCT LIABILITY
Brookes and Gatehouse Limited accept no responsibility
for the use and/or operation of this equipment. It is the
user’s responsibility to ensure that under all circumstances
the equipment is used for the purposes for which it has
been designed.
WARNING - ELECTRICAL HAZARD
This equipment uses high voltage electrical power. Contact
with high voltages may result in injury and/or loss of life.
WARNING - CALIBRATION
The safe operation of this equipment is dependent on
accurate and correct calibration. Incorrect calibration of
this equipment may lead to false and inaccurate
navigational readings placing the yacht into danger.
WARNING - NAVIGATION HAZARD
The Hydra 2000 is an Electronic Navigation System and is
designed to assist in the navigation of your yacht. It is not
designed to totally replace conventional navigation
procedures and precautions and all necessary precautions
should be taken to ensure that the yacht is not placed into
danger.
CAUTION
This equipment is designed for use with a power supply
source of 12v dc. The application of any other power supply
may result in permanent damage to the equipment.

Hydra 2000 User Manual
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RECORD OF AMENDMENTS
Date Amendment
Number Description Signature

Hydra 2000 User Manual
HB-0844-02
PART 1 - INTRODUCTION
CONTENTS
Para Page
1.1 SYSTEM DESCRIPTION 1-3
1.2 PROCESSORS 1-3
1.2.1 Main Processor Unit 1-3
1.2.2 Expansion Unit 1-4
1.3 SENSORS 1-4
1.3.1 Masthead Unit 1-4
1.3.2 Paddle Wheel 1-4
1.3.3 Sonic Speed Unit 1-4
1.3.4 Depth Sensor 1-5
1.3.5 Super Halcyon 3 Fluxgate Compass 1-5
1.3.6 Halcyon 2000 Compass 1-5
1.3.7 Additional Sensors 1-5
1.4 DISPLAYS 1-5
1.4.1 NMEA Full Function Display (FFD) 1-5
1.4.2 Standard FFD 1-6
1.4.3 20/20 Display 1-6
1.4.4 Analogue Indicators 1-6
1.4.5 Halcyon Display 1-7
1.5 CALIBRATION 1-7
1.6 DAMPING 1-7
1.7 MENU STRUCTURE 1-8
ILLUSTRATIONS
Fig No Page
1.1 Typical Hydra 2000 System Block Diagram 1-2
TABLES
Table No Page
1.1 Function Menu Choices 1-9
1.2 Operational Menu Choices 1-11

Hydra 2000 User Manual
HB-0844-02
MastHead
Unit
20/20
20/20
Halcyon Compass
DisplayFFD
FFD
Hydra 2000
MainProcessor
SonicSpeed Unit
Network
Boat
Speed
NMEA FFD
ChartTable
Deck
Mast
Hull
Halcyon
GPS Antenna
Unit
GPS Plus
Depth
000
EP
000
000
Halcyon 2000
Compass
AdditionalSensors
Sea and AirTemperature,Heel,
Trim,BarometricPressure and Strain
Fig 1.1 - Typical Hydra 2000 System Block Diagram

Hydra 2000 User Manual
HB-0844-02
PART 1 - INTRODUCTION
1.1 SYSTEM DESCRIPTION
The Hydra 2000 is a fully integrated instrumentation system that
displays information obtained from various sensors on a choice of
displays positioned throughout the yacht. Information is fed from
the sensors to a Main Processor. From the information gathered
by the sensors the Main Processor distributes information to the
various displays via the Fastnet cable. This allows it to carry out a
wide range of functions including dead reckoning, true wind speed
and true wind direction, etc. These functions are controlled from a
Full Function Display (FFD).
A typical system is shown in Figure 1.1 - Typical Hydra 2000
System Block Diagram.
1.2 PROCESSORS
1.2.1 Main Processor Unit
The Main Processor is the heart of the system and can be
connected to sensors that measure the following:
Boat Speed/Log
Depth
Sea Temperature
Air Temperature
Compass Heading
Apparent Wind Speed
Apparent Wind Angle
Ship's Supply Voltage
Heel Angle
Trim Angle
Mast Rotation
Barometric Pressure
Forestay Load
From this information the Main Processor Unit is then able to
calculate the following additional functions:
Average Boat Speed
Velocity Made Good (VMG) upwind/downwind
Resettable Log
Dead Reckoned Course and Distance

Hydra 2000 User Manual
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Leeway
Heading Corrected for Leeway (Course)
True Wind Speed
True Wind Angle
True Wind Direction
Heading on Next Tack or Gybe
Pressure Trend
In addition, the processor provides four outputs for analogue
indicators. Any one of eight different types of analogue indicator
can be used on any one of these outputs.
It also contains the battery backed memory that stores all the
calibration, damping and alarm settings whilst the power is OFF.
These are adjustable from any FFD.
1.2.2 Expansion Unit
The Expansion Unit allows a further four analogue indicators and a
number of additional sensors to be added to the system. Further
details are given in Part 5 - Options.
1.3 SENSORS
1.3.1 Masthead Unit
The Masthead Unit senses apparent wind speed and wind angle.
The unit is light weight and sealed.
1.3.2 Paddle Wheel
The Paddle Wheel Speed Sensor is designed primarily for
cruising yachts and consists of a paddle wheel that protrudes
through the hull via a housing. So that the paddle wheel may be
cleaned at regular intervals the housing is provided with a flap
valve that closes automatically when the unit is pulled back into the
yacht.
1.3.3 Sonic Speed Unit
The Sonic Speed Unit provides highly accurate and stable boat
speed measurement. It does not rely on mechanical moving parts
that require constant attention to protect them from weed, etc. The
transducers are fitted virtually flush with the hull, creating almost
zero drag, and can be painted, faired or anti-fouled.

Hydra 2000 User Manual
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1.3.4 Depth Sensor
This can either be a removable through-hull unit, or moulded in-hull
for reduced drag. The depth datum can be set to the waterline, the
bottom of the keel or from the transducer.
1.3.5 Super Halcyon 3 Fluxgate Compass
This fluxgate compass sensor is fully gimballed in a bath of oil,
ensuring accurate readings at all normal angles of heel and pitch.
The unit features automatic deviation correction, thus eliminating
the need for expert compass adjustment.
1.3.6 Halcyon 2000 Compass
The Halcyon 2000 Compass is a high performance electronic
fluxgate compass for use on both sailing and power craft. It is
intended to be connected to Hercules 2000, Hydra 2000 or HS
2000 instrument systems through the B&G Fastnet Network.
The Halcyon 2000 Compass has the ability to ‘learn’ the magnetic
effect of the vessel on the compass and automatically apply
deviation correction.
1.3.7 Additional Sensors
Additional sensors provide either single inputs, or improve the
accuracy of other functions on the system and they are discussed
in Part 5 - Options.
1.4 DISPLAYS
1.4.1 NMEA Full Function Display (FFD)
This is the standard system display and every Hydra 2000 must
contain one NMEA FFD. The Standard FFDs and the other
display types, described in this Section, are options with which the
system can be expanded and made even more powerful.
The FFD's name gives an indication to the fact that they are really
much more than just a display. It is a terminal for the whole
system, allowing you to control everything from the functions
displayed on them (and at the 20/20’s) to the calibration of the
system.

Hydra 2000 User Manual
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The FFD simultaneously displays two functions. Any system
function can be called up on any FFD and can be placed on the
system, all with full control of the Hydra 2000.
The NMEA FFD contains a NMEA interface which allows your
Hydra 2000 System to be connected to devices such as position
fixers, autopilots, chart plotters and radars, etc. from different
manufacturers. For example your GPS Plus may be at the chart
table, but you require its information to steer by on deck. Your
Hydra displays can show that information if interfaced to your GPS
Plus. The Hydra System can also provide information to your
autopilot.
NMEA is the National Marine Electronics Association, who have
produced a number of standard specifications for the
interconnection of marine electronic instruments. These standards
specify the electrical signals and the format of the data to be
transferred.
Part 2 - Operating Information describes in detail the use of the
FFD keyboard to control the Hydra 2000.
Part 4 - Installation Information shows NMEA in/out specifications.
1.4.2 Standard FFD
The Standard FFD is functionally identical and similar in
appearance to the NMEA FFD. The only difference is that the
Standard FFD is not fitted with a NMEA interface.
1.4.3 20/20 Display
The Hydra 2000 20/20 is a lightweight, large digit, liquid crystal
display - it can be configured from any FFD or a remote button to
display any system function.
The 20/20's operation is fully explained in Part 5 - Options.
1.4.4 Analogue Indicators
There is a wide range of analogue indicators available. Refer to
Part 5 - Options for full details.