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Hydrophones Projectors Echo Sounders Sidescan Sonar Sonar Test & Evaluation Underwater Communications Custom Design Calibration |
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Subsea acoustic command, acoustic control and remote data transfer functions are provided by a comprehensive range of acoustic telemetry, transponder and acoustic modem products. |
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A
sample of our standard telemetry products are listed below. Click on the
links below to find out more: All these acoustic telemetry systems have optional GUI (Graphical User Interface) control systems running under Windows NT and 95, which have been developed by Chelsea Technologies Group, to provide easy and fast control. Chelsea
Technologies Group Ltd can design a customised telemetry package to meet your
application (visit our custom design
capability page), please send details of your requirement to sales@chelsea.co.uk |
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Commercial users range from operators requiring simple acoustic release or remote actuation of submerged equipment (eg. cable cutting) to users requiring full command and data retrieval acoustic telemetry functions from oceanographic instruments. Our clients include oil companies such as Shell Oil, and from the scientific community Cambridge University (Carrack Measurement Technology) and the Southampton Oceanographic Centre. Defence
users include BAeSEMA & GEC-Marconi for their respective exercise mines
that are in-service with the United Kingdom, United States of America, Canadian,
Australian and Belgian Navies. |
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Datasheet
( CTG1082) |
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CTG1082 is
the surface control unit for OceanTel,
the Chelsea Technologies Group
configurable release transponder and acoustic telemetry system used to
communicate with sub-sea systems. The control unit is used to communicate
with any one of many CTG1083
OceanTel
sub-sea units that may be deployed in the same area. The control unit may be
used to control the outputs on sub-sea electronics, communicate with other
equipment connected to the serial port of sub-sea electronics, and measure
slant ranges. User interface to the unit is via software running on a PC under a 32-bit Windows environment - the computer is connected to the system via an RS232 serial port. The software enables the operator to send commands or data words to sub-sea systems, and displays received replies and slant ranges. The software is also capable of producing a log file of all events, time stamped using the PC clock, to provide a trials record for reviewing later. The
control unit can be powered from its own internal batteries, ac mains supply
via the supplied battery charger, or an external 24V dc supply. The unit and
all connectors on the front panel are splash proof for use on deck. Acoustic
transmission and reception is via the hand-deployed transducer. |
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SPECIFICATION |
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Order Code |
CTG1082 |
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Command Format (Tx) |
Two Frequency FSK |
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Command Frequencies |
8.5kHz to 16kHz in 0.5kHz steps |
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Reply Format (Rx) |
Two Frequency FSK or Single Range/Acknowledge Pulse |
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Reply Frequencies |
8kHz and/or 12kHz |
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Telemetry Range |
6000m |
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Internal Supply |
Rechargeable 24V Battery |
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External Supply |
24Vdc or 110V/240Vac |
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Subsea Unit |
CTG1083 or Compatible Release Unit |
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Dunking Transducer |
Hand-deployed on 25m Cable (75m option) |
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PC Connection |
RS232 Serial Port to IBM PC or compatible |
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User Interface |
Windows 95-98, NT4 or DOS |
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Trigger |
Logic output at receive or transmit |
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Indicators |
LED & Audio (Transmit & Receive) |
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Dimensions |
265 x 150 x 155mm |
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CTG1083 is the telemetry and release transponder electronics for OceanTel - the Chelsea Technologies Group configurable release transponder and acoustic telemetry system used to communicate with sub-sea system. The CTG1083 provides three outputs that can be used to activate external equipment such as release mechanisms and/or beacons. It also features a serial port that maybe used for bi-directional communications with associated equipment. The system also provides a ranging function that is used to obtain the slant ranges. Configuration software is supplied with the electronics that allows the user to customize the unit for a particular application, without the need for hardware modifications or link changes. The configuration software runs on a PC in a 32-bit Windows environment. The computer communicates with the electronics via the RS232 serial port. The configuration is stored in on-board on-volatile memory. |
Datasheet (CTG1083). |
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SPECIFICATION |
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Order Code |
CTG1083 |
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Command Format (Rx) |
Two Frequency FSK |
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Command Frequencies |
8.5kHz to 16kHz in 0.5kHz steps |
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Reply Format (Tx) |
Two Frequency FSK or Single Range / Acknowledge Pulse |
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Reply Frequencies |
8kHz and/or 12kHz (user configurable) |
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Telemetry Range |
6000m |
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Pinger Frequency |
10kHz |
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Pinger Pulse Type |
2ms Single or Double Pulse |
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Pinger Double Pulse Spacing |
0 - 150ms in 10ms steps (user configurable) |
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Pinger Repeat Rate |
1 or 2s (selected by switch contact) |
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Number of Release Outputs |
3 |
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Release Output Types |
2 Relays, 1 Open-Drain FET |
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Release Output Rating |
1A/110V (Relays) , 3A/50V (FET) |
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Release Pulse Length (Relays) |
0.1, 2, 30s, 5min or Latching, (user configurable) |
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Release Pulse Length (FET) |
0.1, 2, 30s, 5min (user configurable) |
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Available Commands |
Release (1, 2, or 3),
Reset (1, 2, or 1 & 2),
Window, |
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Command Codes |
User configurable |
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Bidirectional Communication |
8-bit Data/Command Words (256 unique codes in each direction) |
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Bidirectional Port |
RS232 Port for Data Transfer to/form main sub-sea system |
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Receiver Supply |
8V - 24V dc nominal |
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Transmitter Supply |
24V dc nominal |
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Transducer |
CTG052 or equivalent |
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Control Unit |
CTG1082 or Compatible Surface Unit |
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Maximum Dimensions |
77 x 160 x 50mm |
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The sturdy release section provides unbeaten shock protection ensuring that this release functions even under the harshest conditions. The release mechanism, as well as being spring assisted, is designed to minimize fouling problems with all moving parts contained within the body. The OceanTel ART is commanded by the OceanTel CTG1082 Telemetry Control Unit or compatible units |
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SPECIFICATION (Standard Version) |
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Order Code |
CTG1309 |
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Performance |
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Breaking Load |
9000kg (1) |
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Safe Working Load |
1500kg (1) |
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Standard depth rating |
6000m (1) |
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Command Frequency |
8.5kHz to 16kHz |
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Reply Frequency |
8kHz or 12kHz |
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Battery Life |
24 months (Lithium cells) (1) (2) |
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Functions |
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Transponder |
Pulse for slant range measurement |
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Pinger |
10kHz, 2ms single or double pulse |
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Release command |
Windowed |
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Physical |
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Size |
144mm diameter x 757mm long |
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Weight in air |
26kg |
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Material |
Stainless Steel |
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External connection: |
(optional)(1) |
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Command & Control Interface (for external equipment) |
8-bit Data/Command - user configurable (256 unique codes in each direction) RS232) |
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.(1)
Highest specification |
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The
OceanTel LART - Acoustic Release Transponder is a lightweight release
transponder for use in deep or shallow water. It incorporates the
proven Chelsea
Technologies Group
standard CTG1082
Telemetry and Release electronics. The system is contained in a standard glass sphere within a protective plastic shell. The system is self-buoyant and hence requires no additional buoyancy aids. The OceanTel LART is commanded by the OceanTel CTG1082 Telemetry Control Unit or compatible units.
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.Datasheet (CTG1309-0030) . |
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| Notes: (1) Highest specification system only (2) When activated by CTG1082 Surface Unit |
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