TSR-900
OEM Echosounder ready for integration
The TSR-900 is a compact, coherent single-beam echosounder designed for seamless integration into autonomous surface vessels (ASVs), small AUVs, and shallow-water robotic platforms operating to 50 m depth (transducer limit).
Built on the proven signal architecture of our TSR-1000 Echosounder, the TSR-900 delivers high-quality, pin-to-ping coherent sonar data in a lightweight OEM form factor — ideal for robotics developers, system integrators, and research teams building next-generation marine autonomy.
Why TSR-900?
The TSR-900 generates in-phase (I) and quadrature (Q) data of the returned acoustic signal, enabling:
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Precise depth and range measurement
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Sub-centimetre resolution (8 mm at 200 kHz class)
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Detection of micro-motion in stationary targets
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One-dimensional current profiling
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Advanced signal processing and custom workflows
The same coherent architecture is used in our TSR-1000 Echosounder platform , providing a clear upgrade path from shallow-water development to full industrial deployment.
Designed For Integration
The TSR-900 is a board-level OEM product supplied with a 200 kHz transducer, ready for integration into:
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Autonomous Surface Vessels (ASVs)
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Small inspection ROVs
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Shallow-water AUVs (<50 m)
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Hydrographic robotics platforms
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Academic and experimental sonar systems
The TSR-900 uses RS-422 full duplex communications and a compact 6-pin header interface, making electrical integration straightforward for embedded system designers.
Power requirements are minimal (12 V nominal, ~100 mA class consumption ), ideal for battery-powered robotic systems.
TSR-900 Technical Specification Summary
Parameter | TSR-900 |
|---|---|
Mechanical Size | 4.75" (121 mm) L x 1.8" (46 mm) W |
Continous Power | ~100 mA |
Supply Voltage | 10 to 15 VDC nominal |
Baud Rate | 115200 to 921600 |
Communication | RS-422 Full Duplex |
Receive Bandwidth | 10% |
Transmit Pulse | 10–100 cycles |
Resolution | 8 mm |
Operating Frequency | 200 kHz |
Depth Rating | < 30 m (transducer) |
Beam Width | 14° |
Software and Open Ecosystem
Compatible with PingViewer
The TSR-900 operates directly with open-source PingViewer software, enabling:
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Real-time bottom tracking
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Range visualization
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Adjustable gain and ping parameters
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Logging and replay
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Ping1D driver for 200 data points, 8 bit magnitude output
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TSR driver for 1 cm resolution, 16 bit magnitude output.
The screenshots below show high-contrast bottom returns in shallow water with low noise levels.
Open Protocol for Developers
For advanced users, the TSR-900 supports our open communications protocol, allowing:
• Raw I/Q data access
• Custom filtering and decimation
• Python integration examples (available on our GitHub)
• Full autonomy stack integration
Seamless Upgrade Path
When projects move from prototype to industrial deployment, the TSR-900’s protocol compatibility allows direct transition to the fully integrated, 900-meter rated TSR-1000 Echosounder — without rewriting control software.
This means:
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Same commands
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Same data format
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Same signal philosophy
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1000 meter transducer depth rating
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Industrial underwater housing
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Underwater connectors
Typical Applications
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ASV bathymetry and depth holding
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AUV altitude control
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Shallow-water inspection robotics
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Marine research platforms
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Embedded sonar experimentation
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Education and robotics labs
Built for Engineers
The TSR-900 is not just a depth sensor — it is a coherent acoustic measurement platform designed for teams who want access to real sonar data, not just processed numbers.
Whether you are building autonomous navigation algorithms, performing seabed monitoring, or integrating sonar into a robotics stack, the TSR-900 provides a clean, open, and scalable foundation.