Gemini 720i Product Manual
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 1 © Tritech International Ltd.
Gemini Imaging Sonar
Product Manual
Document: 0685-SOM-00001, Issue: 11
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 2 © Tritech International Ltd.
© Tritech International Ltd
The copyright in this document is the property of Tritech International Ltd. The document is supplied by Tritech International Ltd on
the understanding that it may not be copied, used, or disclosed to others except as authorised in writing by Tritech International Ltd.
Tritech International Ltd reserves the right to change, modify and update designs and specifications as part of their ongoing
product development programme.
All product names are trademarks of their respective companies.
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 3 © Tritech International Ltd.
Table of Contents
Help & Support ........................................................................................................... 5
Warning Symbols ........................................................................................................ 6
Included Equipment .................................................................................................... 7
Head Variations .......................................................................................................... 8
1. Introduction ............................................................................................................. 9
1.1. General Overview ........................................................................................ 9
1.2. Communications ........................................................................................... 9
1.3. Electrical Connection .................................................................................... 9
1.4. Software Version ........................................................................................ 10
2. Technical Specification .......................................................................................... 11
2.1. Gemini 720i ............................................................................................... 11
2.2. Gemini 720id .............................................................................................. 12
2.3. VDSL Adapter ............................................................................................ 13
2.4. Ethernet Adapter ........................................................................................ 14
3. Hardware Installation & Configuration ..................................................................... 15
3.1. Installing the Sonar Head ........................................................................... 15
3.2. Electrical & Communication Notes ............................................................... 15
3.3. Sonar Head Pin-Out (Impulse Titan Connector) ........................................... 16
3.3.1. Impulse Titan MKS-310-FCR (Ethernet Port) ..................................... 17
3.3.2. Impulse Titan MKS(W)-307-FCR (VDSL Port) ................................... 17
3.4. Sonar Head Pin-Out (Burton Connector) ...................................................... 17
3.4.1. Burton 5506-1508 (Main Port) .......................................................... 18
3.4.2. Burton 5506-1506 (Auxiliary Port) ..................................................... 18
3.5. Cable Specification ..................................................................................... 18
3.5.1. Ethernet Cable ................................................................................ 18
3.5.2. VDSL Cable .................................................................................... 19
3.5.3. Burton 55A1-1506 (Auxiliary) Port Cable ........................................... 19
3.6. Surface Adapter Pin-out Diagrams .............................................................. 20
3.6.1. Ethernet Adapter ............................................................................. 20
3.6.2. VDSL Adapter ................................................................................. 21
3.7. An Example Ethernet Setup ........................................................................ 21
3.8. An Example VDSL Setup ............................................................................ 22
3.9. An Example ROV Setup ............................................................................. 22
3.10. Multiple Head Installation .......................................................................... 23
4. Gemini Software Installation .................................................................................. 24
4.1. System Requirements ................................................................................. 24
4.2. Installing the Gemini Software ..................................................................... 24
4.3. Configuring the Gemini ............................................................................... 24
4.3.1. Check the operation of the Gemini ................................................... 25
5. Gemini Software Operation .................................................................................... 26
5.1. User Screen ............................................................................................... 26
5.1.1. Overview ......................................................................................... 26
5.1.2. Online Button .................................................................................. 27
5.1.3. Record Button ................................................................................. 28
5.1.4. Player Controls ................................................................................ 28
5.1.5. Capture Screen ............................................................................... 30
5.1.6. Record Video .................................................................................. 31
5.1.7. Invert Display (Up/Down) ................................................................. 31
5.1.8. Flip Image (Left/Right) ..................................................................... 31
5.1.9. Draw Grid ....................................................................................... 32
5.1.10. Zoom Button .................................................................................. 32
5.1.11. Filter Selector ................................................................................ 32
5.1.12. Sound Velocity Indicator ................................................................. 33
5.1.13. Palette Selector ............................................................................. 33
5.1.14. Gain Assist .................................................................................... 33
Gemini Imaging Sonar
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5.1.15. Gain Control .................................................................................. 33
5.1.16. Range Control ............................................................................... 34
5.1.17. Indicators ...................................................................................... 34
5.1.18. Measurements ............................................................................... 34
5.1.19. Warnings ....................................................................................... 35
5.2. Advanced Screen ....................................................................................... 36
5.2.1. System Data ................................................................................... 36
5.2.2. Configuration Options ...................................................................... 37
5.2.3. Application Settings ......................................................................... 40
5.2.4. Filter Settings .................................................................................. 42
5.2.5. Device Network Settings .................................................................. 43
5.2.6. Distance Marker .............................................................................. 43
5.2.7. Target Tracking ............................................................................... 44
5.3. Serial Data Input ........................................................................................ 48
5.3.1. Sonars & Sensors ........................................................................... 48
5.3.2. Gemini Hub ..................................................................................... 49
5.3.3. COM Ports ...................................................................................... 50
5.4. Multiple Head Operation ............................................................................. 51
5.5. Offline Mode .............................................................................................. 53
5.6. Automatic Online ........................................................................................ 53
5.7. Settings Files ............................................................................................. 53
5.8. Keyboard Shortcuts .................................................................................... 54
6. Seanet Pro Installation .......................................................................................... 55
7. Seanet Pro Operation ........................................................................................... 56
7.1. Seanet Setup for Gemini ............................................................................ 56
7.2. Gemini Sonar Application ........................................................................... 58
7.2.1. Sonar Settings ................................................................................. 58
7.2.2. Application Tools ............................................................................. 59
8. Maintenance ......................................................................................................... 65
8.1. After using Sonar ....................................................................................... 65
8.2. If storing the sonar for extended periods ...................................................... 65
8.3. Regular maintenance .................................................................................. 65
9. Troubleshooting .................................................................................................... 66
A. Setting the computer IP address in Windows XP .................................................... 68
B. Setting the computer IP address in Windows 7 ...................................................... 70
C. Setting the Gemini Device IP Address in Gemini Software ...................................... 72
D. Setting the Gemini Head IP Address in Seanet Pro ................................................ 73
E. Gemini Software String Decode ............................................................................. 75
Glossary ................................................................................................................... 77
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 5 © Tritech International Ltd.
Help & Support
First please read this manual thoroughly (particularly the Troubleshooting section, if present).
If a warranty is applicable, further details can be found in the Warranty Statement, 0080STF-00139, available upon request.
Tritech International Ltd can be contacted as follows:
Mail Tritech International Ltd
Peregrine Road
Westhill Business Park
Westhill, Aberdeenshire
AB32 6JL, UK
Telephone ++44(0)1224 744 111
Fax ++44(0)1224 741 771
Email support@tritech.co.uk
Website www.tritech.co.uk
Prior to contacting Tritech International Ltd please ensure that the following is available:
1. The Serial Numbers of the product and any Tritech International Ltd equipment connected
directly or indirectly to it.
2. Software or firmware revision numbers.
3. A clear fault description.
4. Details of any remedial action implemented.
Contamination
If the product has been used in a contaminated or hazardous environment you
must de-contaminate the product and report any hazards prior to returning the
unit for repair. Under no circumstances should a product be returned that is
contaminated with radioactive material.
The name of the organisation which purchased the system is held on record at Tritech
International Ltd and details of new software or hardware packages will be announced at
regular intervals. This manual may not detail every aspect of operation and for the latest
revision of the manual please refer to
www.tritech.co.uk
Tritech International Ltd can only undertake to provide software support of systems loaded
with the software in accordance with the instructions given in this manual. It is the customer's
responsibility to ensure the compatibility of any other package they choose to use.
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 6 © Tritech International Ltd.
Warning Symbols
Throughout this manual the following symbols may be used where applicable to denote any
particular hazards or areas which should be given special attention:
Note
This symbol highlights anything which would be of particular interest to the reader
or provides extra information outside of the current topic.
Important
When this is shown there is potential to cause harm to the device due to
static discharge. The components should not be handled without appropriate
protection to prevent such a discharge occurring.
Caution
This highlights areas where extra care is needed to ensure that certain delicate
components are not damaged.
Warning
DANGER OF INJURY TO SELF OR OTHERS
Where this symbol is present there is a serious risk of injury or loss of life. Care
should be taken to follow the instructions correctly and also conduct a separate
Risk Assessment prior to commencing work.
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 7 © Tritech International Ltd.
Included Equipment
Note
Each Gemini Sonar head is able to use either the VDSL or Ethernet
communications system and therefore may be converted with the addition of the
appropriate peripherals.
The following equipment may be included:
1. Gemini sonar head (either shallow or deep rated)
2. Surface adapter (either VDSL or Ethernet)
3. Gemini PSU for use with surface adapter
4. Bench testing cable (either VDSL or Ethernet)
5. Blanking cap for unused connector (may be included in an accessories kit with spare Orings)
Also provided will be a sonar head flight case, Gemini software, Seanet Pro software
and documentation. The latest documentation and software updates are available through
www.tritech.co.uk.
Note
For part numbers for ordering replacement parts please refer to the original
purchase documentation or contact Tritech International Ltd support to discuss
upgrade options.
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 8 © Tritech International Ltd.
Head Variations
VDSL
Ethernet
Impulse Connectors
Gemini 720i (300m depth rating)
Impulse Connectors
VDSL
Ethernet
Burton Connectors
Auxiliary
Main
Gemini 720id (4000m depth rating)
Finished in titanium (silver/grey) or aluminium (black anodised)
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 9 © Tritech International Ltd.
1. Introduction
1.1. General Overview
The Gemini is a 2D imaging sonar. It is a multibeam sonar, offering a 120° field of view with
update rates of up to 30Hz giving rapid feedback to the user (hardware is capable of 30Hz,
Seanet Pro is limited to 15Hz).
The system consists of the Gemini sonar head(s) and either Gemini or Seanet Pro control
and display software. The software communicates with the sonar over Ethernet (100Mbit·s-1),
or Very high speed Digital Subscriber Line (VDSL) via a VDSL to Ethernet converter.
The software is Windows based and will run best on a display of resolution 1280x1024 or
greater with 32-bit colour resolution.
1.2. Communications
There are two connection options, 100Mbit·s-1 Ethernet and VDSL. The sonar will
automatically detect which connection is available and switch to that connection.
The VDSL option allows a single twisted pair to be used for communication to/from the sonar
at high speeds dependent on the length and quality of the cable (see Chapter 2, Technical
Specification for details). The Tritech International Ltd supplied VDSL Adapter Unit takes the
two wire VDSL input and bridges it to Ethernet for simple connection to a PC.
VDSL maximises the data rate by testing the quality of the connection at start up and adapting
the speed accordingly. With VDSL there is a trade off between link speed and noise immunity.
There is a setting in the software that allows optimisation to cope with the level of noise
introduced by other parts of the system.
Note
The red LED on the VDSL adapter box may light up to indicate that the link is
experiencing higher levels of electrical noise. The sonar can cope with some
electrical noise on the link but it may reduce the ping rate.
When using an Ethernet connection it should be noted that the Gemini Sonar can fully utilise
a 100Mbit·s-1 link while returning the sonar data. If the Gemini Sonar is to share an Ethernet
link with other high bandwidth devices, such as video cameras, it is recommended that the
100Mbit·s-1 devices share a gigabit (or faster) link to the surface to reduce possible network
congestion.
1.3. Electrical Connection
If the Gemini head is fitted with the Impulse connectors; only one of the connectors can be
used at a time for communication with the surface, however, power can be supplied on either
connector. When using a Gemini head fitted with a Burton connector the main port is used
for communication and power and the auxiliary port is used for external devices.
Introduction Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 10 © Tritech International Ltd.
Caution
Power should only be supplied on one connector at a time.
1.4. Software Version
Note
The instructions within this manual apply to software version 2.00.13 onwards.
Screenshots and images wihin the software may differ slightly from the ones
used within this manual. Please visit
www.tritech.co.uk for the latest software.
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 11 © Tritech International Ltd.
2. Technical Specification
2.1. Gemini 720i
175
228
43
M5 x 0.8 10
123
110
115
135
Not to scale, dimensions in mm.
Acoustic
Operating Frequency 720kHz
Number of Channels 96
Angular Resolution 1.0° acoustic, 0.5° effective
Scanning Sector 120°
Number of Beams 256
Vertical Beamwidth 20°
Range 0.2m to 120m
Scan Rate 5-30Hz (range dependent)
Range Resolution 8mm (range dependent)
Electrical and Communication
Power Consumption 35W max (range dependent, head unit only)
Supply Voltage 20 - 75V DC
Data Communications Ethernet (up to 80m) or VDSL (up to 1000m)
Additional I/O RS232, Isolated TTL in
VDSL Cable Length
Maximum length for VDSL and power is 300m, if power is provided locally
(e.g., by the ROV) then maximum cable length for VDSL communication only
is 1000m.
Technical Specification Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 12 © Tritech International Ltd.
Physical
Weight 3.9kg air, 1.2kg water
Depth Rating 300m
Materials & Finish Aluminium alloy (6082T6) hard anodised
Operating Temperature -10 to 35°C
Storage Temperature -20 to 50°C
2.2. Gemini 720id
120
306
324
Ø140
50
Not to scale, dimensions in mm.
Shown with Burton connector. Other connectors are available
Ø145
Acoustic
Operating Frequency 720kHz
Number of Channels 96
Angular Resolution 1.0° acoustic, 0.5° effective
Scanning Sector 120°
Number of Beams 256
Vertical Beamwidth 20°
Range 0.5 to 120m
Scan Rate 5-30Hz (range dependent)
Range Resolution 8mm (range dependent)
Electrical and Communication
Power Consumption 35W max (range dependent, head unit only)
Supply Voltage 20 - 75V DC
Data Communications Ethernet (up to 80m) or VDSL (up to 1000m)
Additional I/O RS232, Isolated TTL in
VDSL Cable Length
Maximum length for VDSL and power is 300m, if power is provided locally
(e.g., by the ROV) then maximum cable length for VDSL communication only
is 1000m.
Technical Specification Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 13 © Tritech International Ltd.
Physical
Property Aluminium Body Titanium Body
Weight 8kg air, 3.5kg water 12kg air, 7.5kg water
Depth Rating 4000m 4000m
Materials Aluminium alloy (6082T6) Titanium (6 AL-4V)
Finish Hard anodised Bead blasted
Operating Temperature -10 to 35°C
Storage Temperature -20 to 50°C
2.3. VDSL Adapter
Not to scale, dimensions in mm.
130
151
70 160
Weight 1.1kg
Materials Enclosure: Aluminium alloy (AC-44300), Connectors:
thermoplastic
Finish Powder Coated
Operating Temperature 5 to 35°C
Storage Temperature -20°C to 50°C
Power Consumption 3.8W
Supply Voltage 22 - 75V DC
Data Communications Ethernet (10/100) Base-T (80m) VDSL (up to 1000m)
Connectors Souriau UTS7124P (mates with UTS6JC124S)
Souriau UTS7147S (mates with UTS6JC147P)
Souriau UTS718RJFN (mates with UTS6JC18RJN25)
Technical Specification Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 14 © Tritech International Ltd.
2.4. Ethernet Adapter
Not to scale, dimensions in mm.
130
151
70 160
Weight 1.1kg
Materials Enclosure: Aluminium alloy (AC-44300), Connectors:
thermoplastic
Finish Powder Coated
Operating Temperature 5 to 35°C
Storage Temperature -20°C to 50°C
Supply Voltage 22 - 75V DC
Data Communications 2x Ethernet (10/100) Base-T (80m)
Connectors Souriau UTS7124P (mates with UTS6JC124S)
Souriau UTS71412S (mates with UTS6JC1412P)
Souriau UTS718RJFN (mates with UTS6JC18RJN24)
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 15 © Tritech International Ltd.
3. Hardware Installation & Configuration
Caution
Although the sonar head is rugged, it should be handled with care, particularly
the connector and receiver/transmitter elements. It is strongly recommended that
a substantial guard is fitted over the sonar to protect the transducer from impact
damage.
3.1. Installing the Sonar Head
The transducer should be mounted with the transmitter element on the bottom. The transmit
and receive elements are internally angled down at 10° which should be taken into account
when mounting the Sonar.
For the 720i there are 4 tapped M5 holes (10mm deep) on the top surface that are to be
used for mounting the sonar.
Any metallic clamps should be electrically insulated from the sonar body by either rubber or
plastic strips or mounting brackets of at least 3 mm thickness and extending at least 3 mm
beyond the clamp boundary to reduce any galvanic corrosion effect. Non-metallic clamps are
preferable; if metallic clamps are used (especially if they are not aluminium) they should be
painted or lacquered with at least two or three coatings.
Caution
Any alloy containing copper such as brasses or bronze should be avoided
because they will severely corrode the aluminium body.
1. Sound Velocity Probe
2. Receiver Elements
3. Transmitter Elements
3.2. Electrical & Communication Notes
Either an Ethernet or VDSL cable whip is supplied with the appropriate connector fitted to one
end. The other end should be terminated with a suitable connector for the user application.
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 16 © Tritech International Ltd.
Connector Maintenance Guidelines
Mating surfaces should be lubricated with 3M Silicone Spray or equivalent, DO NOT
GREASE. Connectors must be lubricated on a regular basis. Lubricate O-rings with Dow
Corning #111 Valve Lubricant or equivalent. O-rings can be seriously degraded if exposed to
direct sunlight or high ozone levels for extended periods of time. Clean plugs and receptacles
with soap and fresh water.
Caution
Ensure that o-rings have been fitted correctly to cables and blanking caps before
use. O-rings should be inspected and replaced as part of a regular maintenance
programme. Frequency will depend on usage.
When attaching a connector make sure that both connector and socket are
completely dry. Any water trapped in the connection could result in an electrical
short.
If the Gemini has two ports then the unused connector must have a blanking cap
fitted prior to immersing in water. Failure to do this will cause permanent damage.
If using alcohol or IPA to clean out the connector take care that it does not come
into contact with any other part of the sonar. If an O-ring is present it should be
first removed and discarded and the new O-ring only inserted after the IPA has
evaporated.
Ground Fault Monitoring
The power supply within the Gemini includes an electrically isolated DC-DC converter frontend. There is a small capacitive connection between the isolated ground and the sonar
chassis which should not noticeably affect any impressed current ground fault indicator (GFI)
equipment.
Power
Caution
Never try to make the Gemini work down a long cable by increasing the PSU
output voltage above 75V DC.
Warning
The Gemini PSU that is supplied with the Gemini system is intended for INDOOR
USE ONLY and should not be placed in a position where it could get wet.
3.3. Sonar Head Pin-Out (Impulse Titan Connector)
Note
When fitted with the Impulse Titan style connector the VDSL and Ethernet are
on separate ports but cannot be operated at the same time. Whichever port is
not connected can be connected to RS232/TTL auxiliary devices.
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 17 © Tritech International Ltd.
3.3.1. Impulse Titan MKS-310-FCR (Ethernet Port)
Pin Function Diagram Photograph
1 Ethernet RX +
2 Ethernet RX -
3 Ethernet TX +
4 DC +
5 DC +
6 Ethernet TX-
7 DC Ground
8 DC Ground
9 TTL Ground
12
4
6
8
7
5
3
10
9
10 TTL IN Impulse Titan MKS-310-FCR
3.3.2. Impulse Titan MKS(W)-307-FCR (VDSL Port)
Pin Function Diagram Photograph
1 DC Ground
2 DC +
3 RS232 RX
4 RS232 TX
5 RS232 Ground
6 VDSL +
4
1
2
5
3
6
7
7 VDSL - Impulse Titan MKS(W)-307-FCR
3.4. Sonar Head Pin-Out (Burton Connector)
Note
When fitted with the Burton style connector the VDSL and Ethernet are both on
the MAIN port of the sonar. The AUXILIARY port is only for the RS232 and TTL
connection.
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 18 © Tritech International Ltd.
3.4.1. Burton 5506-1508 (Main Port)
Pin Function Diagram
1 Ethernet RX +
2 Ethernet RX -
3 Ethernet TX +
4 DC +
5 VDSL +
6 Ethernet TX -
7 DC Ground (0V)
8 VDSL -
5
6
4
1 2
3
7
8
5506-1508
3.4.2. Burton 5506-1506 (Auxiliary Port)
Pin Function Diagram
1 RS232 RX
2 RS232 TX
3 DC +
4 DC Ground (0V)
5 RS232/TTL Ground
6 TTL IN
6
5
4
1 2
3
5506-1506
3.5. Cable Specification
3.5.1. Ethernet Cable
For an Ethernet connection, the supplied cable is described below and should be terminated
with an appropriate connector for the intended application, for example, an RJ45 connector
for integration into a PC network.
Note
Ethernet connection requires a minimum of CAT5e shielded cable for the entire
cable run (max 80m), lengths of untwisted cable around connectors must be
kept to an absolute minimum. Untwisted lengths will cause poor or intermittent
operation.
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 19 © Tritech International Ltd.
Ethernet Cable Specification
Impulse Titan
MKS-310-FCR
Burton 55A1-1508 Cable Colour &
Specification
Function
1 1 Red UTP#2
(24AWG)
Ethernet RX +
2 2 White UTP#2
(24AWG)
Ethernet RX -
3 3 Blue UTP#1
(24AWG)
Ethernet TX +
4 4 Red (20AWG) DC +
6 6 White UTP#1
(24AWG)
Ethernet TX -
7 7 Black (20AWG) DC Ground
Minimum dynamic bend radius 130mm (static 36mm)
3.5.2. VDSL Cable
A VDSL connection requires only one twisted pair from the sonar to the surface.
Note
The signal path should have a characteristic impedance of 110Ω (±10Ω) for the
entire cable run for optimal performance.
VDSL Cable Specification
Impulse Titan
MKS(W)-307-FCR
Burton 55A1-1508 Cable Colour &
Specification
Function
1 7 Black (20AWG) DC Ground
2 4 Red (20AWG) DC +
6 5 Blue UTP#1
(24AWG)
VDSL +
7 8 White UTP#1
(24AWG)
VDSL -
Minimum dynamic bend radius 129mm (static 35mm)
3.5.3. Burton 55A1-1506 (Auxiliary) Port Cable
An RS232 serial connection or TTL connection is possible to enable the use of an auxiliary
device or sensor connected in series with the Gemini head. A cable to connect to the
Auxiliary port is available from Tritech International Ltd with the following specification:
Note
It will be necessary to terminate this cable with an appropriate connector for the
sensor which is to be used.
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 20 © Tritech International Ltd.
Burton 55A1-1506 Auxiliary Cable Specification
Pin Cable Colour &
Specification
Function
1 Red UTP#2 (24AWG) RS232 RX
2 White UTP#2 (24AWG) RS232 TX
3 Red (20AWG) DC +
4 Black (20AWG) DC Ground (0V)
5 White UTP#1 (24AWG) RS232/TTL Ground
6 Blue UTP#1 (24AWG) TTL In
Minimum dynamic bend radius 130mm (static 36mm)
3.6. Surface Adapter Pin-out Diagrams
Note
For all system types the connection to the surface computer or IT infrastructure
from the Gemini Hub, Ethernet or VDSL adapter should be via a shielded Cat5e
cable fitted with an RJ45 connector.
3.6.1. Ethernet Adapter
Sonar Head Connector
Pin Function Diagram Photograph
A Ethernet RX+
B Ethernet RX -
C Ethernet TX+
D DC +
E DC +
F Ethernet TX -
G DC Ground
H DC Ground
J not connected
K not connected
L not connected
E
D
C
B
A
J
H
M
K
L
F
G
M cable screen Souriau UTS71412S
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 21 © Tritech International Ltd.
Ethernet DC Connector
Pin Function Diagram Photograph
1 DC Ground
2 DC +
3 not connected
4 1
3 2
4 not connected Souriau UTS7124P
3.6.2. VDSL Adapter
Sonar Head Connector
Pin Function Diagram Photograph
1 DC Ground
2 DC +
3 not connected
4 VDSL +
5 VDSL -
6 not connected
1
6
2 7
5
3
4
7 cable screen Souriau UTS7147S
VDSL DC Connector
Pin Function Diagram Photograph
1 DC Ground
2 DC +
3 not connected
4 1
3 2
4 not connected Souriau UTS7124P
3.7. An Example Ethernet Setup
Test or bench setup for the Gemini Sonar system using Ethernet communications via the
Ethernet adapter unit (Gemini 720i shown).
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 22 © Tritech International Ltd.
3.8. An Example VDSL Setup
Test or bench setup for the Gemini Sonar system using VDSL communications via the VDSL
adapter unit (Gemini 720i shown).
3.9. An Example ROV Setup
An example of connections for an ROV, with the Gemini Sonar system using VDSL
communications via the VDSL adapter unit (Gemini 720i shown).
Hardware Installation & Configuration Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 23 © Tritech International Ltd.
3.10. Multiple Head Installation
It is possible to control and display up to four Gemini heads from one computer using the
Gemini software. In order to do this extra hardware will be required to connect the extra
Gemini heads to the system as detailed:
Using the Gemini
Ethernet Interface Box
The Ethernet Interface Box will output to a standard Ethernet
connection so on a system with multiple heads it is possible
to connect these to an Ethernet switch. The Gemini sonar is
capable of utilising the full bandwidth of the 100Mbit·s-1 (fast
Ethernet) connection so any switch or hub (and subsequent
infrastructure) used should be rated to Gigabit speeds in order
to be able to cope with the data.
Using the Gemini Hub Available as a separate item from Tritech International Ltd is a
Gemini Hub which is capable of powering and communicating
with up to two Gemini sonars. The hub also provides RS232
ports for connecting additional sensors to the system (such as
GPS or navigation sensors). For more details of the Gemini
Hub please refer to the Gemini Hub manual or contact Tritech
International Ltd.
Gemini Imaging Sonar
Document: 0685-SOM-00001, Issue: 11 24 © Tritech International Ltd.
4. Gemini Software Installation
The Gemini head is supplied with software to control the functions of the sonar and to display
the captured images. The software is supplied as an installer package which installs the
software and a number of supporting files and documentation.
Note
The software is also available for download from
www.tritech.co.uk
4.1. System Requirements
Minimum Recommended
Processor 2GHz 2GHz dual core
RAM 1GB 2GB
Graphics 3D hardware accelerated graphics card.
Display 1280x1024 (32bit colour) 1600x1200 (32bit colour)
Disk space Install is 20MB, greater than 160GB recommended for log files
Networking
100Mbit·s-1 (fast Ethernet) 1000Mbit·s-1 (Gigabit Ethernet)
Software Windows XP 32bit Windows 7 32 or 64bit
4.2. Installing the Gemini Software
The Gemini software is supplied on a USB memory stick as a Windows Installer Package
(with the .msi file extension). Doubling clicking the installation file will start the Windows
Installer and install the software onto the computer. Older units were supplied with a CDROM and it will auto-run upon disc insertion, if using a CD-ROM based installation, consider
updating to the latest version of the software from www.tritech.co.uk. During installation follow
the installer instructions, if required making any appropriate selections, to install the software.
4.3. Configuring the Gemini
The Gemini head uses Ethernet to communicate with the computer running the Gemini
software. Depending on the configuration of the system, this may be partly carried over a
VDSL link. Before the head can be connected to the LAN, the IP address needs to be set
to a suitable value for that network. Also the subnet mask needs to be appropriate for the
network and the address chosen.
Configuring the IP address of the Gemini is a four stage process. Firstly the IP address of
the computer is set to a value which will communicate with the head. The Gemini software is
then used to change the IP address of the Gemini. The third stage is to reset the IP address
of the computer. The final stage is to check the operation of the Gemini on the network (by
running the Gemini software and verifying that the Gemini head is able to communicate).
The following instructions use addresses 192.168.2.201 for the Gemini and 192.168.2.100
for the computer. These addresses are only appropriate for a new Gemini which has just
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