Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 1 © Tritech International Ltd.
Gemini 720is Imaging Sonar
Product Manual
Document: 0703-SOM-00002, Issue: 1
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 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 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 3 © Tritech International Ltd.
Table of Contents
Help & Support ........................................................................................................... 5
Warning Symbols ........................................................................................................ 6
Head Variations .......................................................................................................... 7
1. Introduction ............................................................................................................. 8
1.1. General Overview ........................................................................................ 8
1.2. Communications ........................................................................................... 8
1.3. Electrical Connection .................................................................................... 8
1.4. Software Version .......................................................................................... 9
2. Technical Specification .......................................................................................... 10
2.1. Gemini 720is .............................................................................................. 10
3. Hardware Installation & Configuration ..................................................................... 11
3.1. Installing the Sonar Head ........................................................................... 11
3.2. Electrical & Communication Notes ............................................................... 11
3.3. Sonar Head Pin-Out Diagrams .................................................................... 13
3.3.1. Single Seacon 5506-1508 connector ................................................ 13
3.3.2. Single Seacon MCBH8M connector .................................................. 13
3.3.3. Schilling SeaNet connector .............................................................. 14
3.3.4. Single Titan Impulse MKS-310-FCR connector .................................. 14
3.3.5. Single Titan Impulse MKS(W)-307-FCR connector ............................. 15
3.3.6. Seacon 5506-1508 and Seacon 5506-1506 connectors ...................... 15
3.4. Surface Adapter Pin-out Diagrams .............................................................. 16
3.4.1. Ethernet Adapter ............................................................................. 16
3.4.2. VDSL Adapter ................................................................................. 17
3.5. An Example Ethernet Setup ........................................................................ 19
3.6. An Example VDSL Setup ............................................................................ 20
3.7. An Example ROV Setup ............................................................................. 21
3.8. Multiple Head Installation ............................................................................ 22
4. Gemini Software Installation .................................................................................. 23
4.1. System Requirements ................................................................................. 23
4.2. Installing the Gemini Software ..................................................................... 23
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 .................................................................................. 30
5.1.7. Invert Display (Up/Down) ................................................................. 31
5.1.8. Flip Image (Left/Right) ..................................................................... 31
5.1.9. Draw Grid ....................................................................................... 31
5.1.10. Zoom Button .................................................................................. 31
5.1.11. Filter Selector ................................................................................ 32
5.1.12. Sound Velocity Indicator ................................................................. 32
5.1.13. Palette Selector ............................................................................. 32
5.1.14. Gain Assist .................................................................................... 32
5.1.15. Gain Control .................................................................................. 33
5.1.16. Range Control ............................................................................... 33
5.1.17. Indicators ...................................................................................... 33
5.1.18. Measurements ............................................................................... 34
5.1.19. Warnings ....................................................................................... 34
5.2. Advanced Screen ....................................................................................... 34
5.2.1. System Data ................................................................................... 35
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 4 © Tritech International Ltd.
5.2.2. Configuration Options ...................................................................... 36
5.2.3. Application Settings ......................................................................... 39
5.2.4. Filter Settings .................................................................................. 41
5.2.5. Device Network Settings .................................................................. 42
5.2.6. Distance Marker .............................................................................. 42
5.2.7. Target Tracking ............................................................................... 43
5.3. Serial Data Input ........................................................................................ 45
5.3.1. Sonars & Sensors ........................................................................... 46
5.3.2. Gemini Hub ..................................................................................... 47
5.3.3. COM Ports ...................................................................................... 48
5.3.4. Aux Power ...................................................................................... 50
5.4. Multiple Head Operation ............................................................................. 50
5.5. Offline Mode .............................................................................................. 52
5.6. Automatic Online ........................................................................................ 52
5.7. Settings Files ............................................................................................. 53
5.8. Keyboard Shortcuts .................................................................................... 53
6. Seanet Pro Installation .......................................................................................... 54
6.1. System requirements .................................................................................. 54
6.2. Installing Seanet Pro .................................................................................. 54
7. Seanet Pro Operation ........................................................................................... 57
7.1. Seanet Setup for Gemini ............................................................................ 57
7.2. Gemini Sonar Application ........................................................................... 59
7.2.1. Sonar Settings ................................................................................. 60
7.2.2. Application Tools ............................................................................. 61
7.3. Outputting data via REMV4 ........................................................................ 67
8. Maintenance ......................................................................................................... 68
8.1. After using Sonar ....................................................................................... 68
8.2. If storing the sonar for extended periods ...................................................... 68
8.3. Regular maintenance .................................................................................. 68
9. Troubleshooting .................................................................................................... 69
A. Setting the computer IP address in Windows XP .................................................... 71
B. Setting the computer IP address in Windows 7 ...................................................... 73
C. Setting the Gemini Device IP Address in Gemini Software ...................................... 75
D. Setting the Gemini Head IP Address in Seanet Pro ................................................ 76
E. Gemini Software String Decode ............................................................................. 78
F. Gemini Software String Encode ............................................................................. 80
Glossary ................................................................................................................... 81
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 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 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 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 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 7 © Tritech International Ltd.
Head Variations
The Gemini 720is comes in the following configurations:
1000m version
• Aluminium Housing
4000m version
• Titanium Housing
The Gemini 720is is available with a wide variety of connectors fitted:
• Single Seaconn 5506-1508 (Standard option)
• Dual Seaconn 5506-1508
• Single Seaconn MC-BH-8M
• Single Burton 5506-1508
• Dual Burton 5506-1508
• Schilling Seanet connector (Gemini 720is Titanium units only)
Pin outs for each specific model can be found in later sections of this manual.
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 8 © Tritech International Ltd.
1. Introduction
1.1. General Overview
The Gemini 720is 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
Depending on the electrical connector fitted to the Gemini not all communication modes may
be available for use. Please refer to Section 3.3, “Sonar Head Pin-Out Diagrams” for details
on the range of connectors available and the appropriate communication modes support.
Introduction Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 9 © Tritech International Ltd.
Caution
Power should only be applied to the MAIN port of the Gemini. The AUX port, if
fitted, provides a regulated power supply - please refer to Section 2.1, “Gemini
720is” for more information.
1.4. Software Version
Note
The instructions within this manual apply to the following software versions:
• Gemini software - 1.20.00 onwards
• Seanet Pro - 2.23 build 527 onwards
Screenshots and images within the software may differ slightly from the ones
used within this manual. The latest version of software can also be downloaded
from
www.tritech.co.uk.
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 10 © Tritech International Ltd.
2. Technical Specification
2.1. Gemini 720is
135
236
271
107
99
81
All dimensions are in mm, not to scale
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° (tilted down 10°)
Range 0.2m to 120m
Scan Rate 5-30Hz (range dependent)
Range Resolution 8mm (range dependent)
Electrical and Communication
Power Consumption 25W max
Supply Voltage 22 to 74V DC
Aux Port Voltage 24V DC (±6V) at 30W max
Data Communications Ethernet or VDSL
Additional I/O RS232, RS485 (half duplex), TTL in, Ethernet
Connector types SeaCon 55 series, SeaCon MCBH or Schilling SeaNet
(single port as standard)
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 11 © 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. The plastic guard fitted to the
unit will not be able to protect the sonar against significant impacts.
3.1. Installing the Sonar Head
The transducer should be mounted with the transmitter element on the top. The transmit and
receive elements are internally angled down at 10° which should be taken into account when
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
When deploying the aluminium version of the Gemini 720is, alloys containing
copper such as brasses or bronze should be avoided.
1. Sound Velocity Probe
2. Transmitter Elements
3. Receiver Elements
3.2. Electrical & Communication Notes
A cable whip supporting either Ethernet or VDSL communications is supplied. The other end
should be terminated with a suitable connector for the user application.
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 12 © 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
If required, 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.
Caution
Power should only be supplied to the Gemini through the MAIN port. The AUX
port power is supplied via an internal regulator.
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.
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 13 © Tritech International Ltd.
3.3. Sonar Head Pin-Out Diagrams
The following pin out diagrams details the appropriate connectors for each major variant of
the Gemini 720is.
3.3.1. Single Seacon 5506-1508 connector
S11108 (1000m) or S11109 (4000m)
Gemini 720is fitted with a single Seacon 55 series connector using Ethernet communications
only.
Bulkhead view Pin Function
1 Ethernet RX+
2 Ethernet RX-
3 Ethernet Tx+
4 DC +
5 N/C
6 Ethernet Tx-
7 DC Ground
5
6
4
1 2
3
7
8
8 N/C
S11110 (1000m) or S11111 (4000m)
Gemini 720is fitted with a single Seacon 55 series connector using Ethernet and VDSL
communications.
Bulkhead view Pin Function
1 Ethernet Rx+
2 Ethernet Rx-
3 Ethernet Tx+
4 DC +
5 VDSL +
6 Ethernet Tx-
7 DC Ground
5
6
4
1 2
3
7
8
8 VDSL -
3.3.2. Single Seacon MCBH8M connector
S11107 (1000m) only
Gemini 720is fitted with a single Seacon MCBH8M connector using Ethernet communications
only.
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 14 © Tritech International Ltd.
Bulkhead view Pin Function
1 Ethernet RX+
2 Ethernet RX-
3 Ethernet Tx+
4 DC +
5 N/C
6 Ethernet Tx-
7 DC Ground
5
6
4
1
2
3
7
8
8 Chassis
3.3.3. Schilling SeaNet connector
S11112 (4000m) only
Gemini 720is fitted with a Schilling Seanet connector, using Ethernet communications.
Bulkhead view Pin Function
1 DC +
2 DC Ground
3 Chassis
4 Ethernet Rx+
5 Ethernet Rx-
6 Ethernet Tx-
1
2
7
6
5
4
3
7 Ethernet Tx+
3.3.4. Single Titan Impulse MKS-310-FCR connector
S11414 (1000m) only
Gemini 720is fitted with a single Titan Impulse MKS-310-FCR connector using Ethernet
communications only.
Bulkhead view Pin Function
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
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 15 © Tritech International Ltd.
3.3.5. Single Titan Impulse MKS(W)-307-FCR connector
S11415 (1000m) only
Gemini 720is fitted with a single Titan Impulse MKS(W)-307-FCR connector using VDSL
communications. An auxiliary RS232 input can be fed into the sonar.
Bulkhead view Pin Function
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 -
3.3.6. Seacon 5506-1508 and Seacon 5506-1506 connectors
S11127 (1000m) or S11128 (4000m)
Gemini 720is fitted with two Seacon 55 series connectors. The main connector uses Ethernet
communications with the auxiliary connector providing an additional Ethernet communication
line and regulated 24V DC output.
MAIN AUXMAIN
Bulkhead
view
Pin Function Pin Function
AUX
Bulkhead
view
1 Ethernet Rx+ 1 Ethernet Rx+
2 Ethernet Rx- 2 Ethernet Rx-
3 Ethernet Tx+ 3 24V DC +
4 DC + 4 0V DC
5 N/C 5 Ethernet Tx+
6 Ethernet Tx-
7 DC Ground
564
1 2
3
7
8
8 N/C
6 Ethernet Tx-
6
5
4
1 2
3
S11017 (1000m) or S11027 (4000m)
Gemini 720is fitted with two Seacon 55 series connectors. The main connector uses Ethernet
communications with the auxiliary connector allowing either RS232 or RS485 (software
selectable) communications to an attached device. A regulated 24V DC output is also
available.
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 16 © Tritech International Ltd.
MAIN AUXMAIN
Bulkhead
view
Pin Function Pin Function
AUX
Bulkhead
view
1 Ethernet Rx+ 1 RS232 Rx /
RS485 B
2 Ethernet Rx- 2 RS232 Tx /
RS485 A
3 Ethernet Tx+ 3 24V DC +
4 DC + 4 0V DC
5 VDSL + 5 RS232 / TTL
Ground
6 Ethernet Tx-
7 DC Ground
564
1 2
3
7
8
8 VDSL -
6 TTL In
6
5
4
1 2
3
3.4. 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. The 72V VDSL Adapter Unit can also be
used in applications where long length power and communications is desirable
- for more information see the associated Product Manual: 0713-SOM-00003
available at
www.tritech.co.uk
3.4.1. Ethernet Adapter
Not to scale, dimensions in mm.
130
151
70 160
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 17 © Tritech International Ltd.
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
Ethernet DC Connector
Pin Function Diagram Photograph
1 DC Ground
2 DC +
3 not connected
4 1
3 2
4 not connected Souriau UTS7124P
3.4.2. VDSL Adapter
Not to scale, dimensions in mm.
130
151
70 160
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 18 © Tritech International Ltd.
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
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 19 © Tritech International Ltd.
3.5. An Example Ethernet Setup
Test or bench setup for the Gemini Sonar system using Ethernet communications via the
Ethernet adapter unit (Gemini 720is shown).
Computer
Ethernet Adapter
Gemini 720is
Blanking
cap
Ethernet / power test cable
Gemini PSU
CAT5 Patch Cable
Hardware Installation & Configuration Gemini 720is Imaging Sonar
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3.6. An Example VDSL Setup
Test or bench setup for the Gemini Sonar system using VDSL communications via the VDSL
adapter unit (Gemini 720is shown).
Computer
Gemini 720is
Blanking
cap
VDSL / power test cable
Gemini PSU
CAT5 Patch Cable
VDSL Adapter
Hardware Installation & Configuration Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 21 © Tritech International Ltd.
3.7. 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 720is shown).
Computer
VDSL Adapter
ROV
Gemini 720is
Blanking
cap
power supply
from vessel
Hardware Installation & Configuration Gemini 720is Imaging Sonar
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3.8. 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.
It is also possible to link two Gemini 720is units together as long as at least one unit is fitted
with dual Seacon connectors in the dual Ethernet configuration:
AUX ETHERNET PORT:
CONNECTED TO MAIN PORT
OF ADDITIONAL GEMINI 720is
MAIN ETHERNET PORT:
CONNECTED TO AUX PORT
OF FIRST GEMINI 720is
MAIN ETHERNET PORT:
CONNECTED TO ETHERNET
INFRASTRUCTURE (MUX POD ETC)
GEMINI 720is
GEMINI 720is
Both units would be controllable through the Gemini software as if they were connected
through a standard hub.
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 23 © 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 CD-ROM which has been designed to auto-run
upon disc insertion. The latest commercial release of software is always available from
www.tritech.co.uk.
Once loaded, the main menu of the CD will be shown on screen.
Gemini Software Installation Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 24 © Tritech International Ltd.
Click on the Multibeam button and the following screen will display all the appropriate
software packages for installation.
Click on the appropriate installation option and then follow the onscreen prompts and
instructions.
Note
Do not attempt to remove the CD-ROM from your computer during the installation
process.
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
been delivered from the factory. If the IP address of Gemini has already been changed, an
appropriate address for the computer will need to be selected first to allow communication
with the Gemini before it can be configured.
The Gemini head should be given an IP address appropriate for the network it will be running
on. The address at manufacture is 192.168.2.201 and the process of setting the sonar IP
address involves talking to the unit via the 192.168.2.201 address to change the IP address
to a value suitable for the network.
Gemini Software Installation Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 1 25 © Tritech International Ltd.
Note
For instructions on setting the computer and Gemini IP address please refer to
Appendix A, Setting the computer IP address in Windows XP or Appendix B,
Setting the computer IP address in Windows 7 and Appendix C, Setting the
Gemini Device IP Address in Gemini Software.
4.3.1. Check the operation of the Gemini
If the correct changes have been made to the Gemini it should now show as connected in
the Gemini software. If nothing is displayed, check that all values entered were correct and
it may be necessary to rerun the Gemini software to establish a link. The Gemini software
retains its settings between runs, and so all the values which were used whilst the Gemini
was programmed will be retained.
When the Gemini software is started, select the Advanced tab to show details of the
connected Gemini and if it is able to communicate, it will be listed in the status window and
automatically go online after five seconds.
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