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WMT 6

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High power USBL tracking and telemetry transponder

Engineered for

AUV ROV Towfish
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Overview

Ultimate precision for underwater tracking

WMT is used with Ranger 2 USBL for tracking and communication tasks. It’s most commonly used with ROVs, AUVs and towfish applications where its high acoustic output power level means it’s perfect for long-range operation up to 7,000 m. It’s also suitable for AUVs, ROVs and towfish applications.

Overview

WMT is a 6G compatible, high acoustic output power USBL transponder available in two depth versions: 3,000 m and 7,000 m. The 7,000 m version has a higher acoustic output power level for improved long-range operation.

For ROV and towfish tracking, WMT supports responder trigger for faster position updates, an integrated rechargeable Li-Ion battery pack that is charged from the ROV’s power supply and full RS232 communications enabling channel set up, power and gain etc. to be changed from the surface.

At a glance

  • Use it with Ranger 2 for deep water, long layback tracking tasks
  • High power acoustic output and directional transducer
  • Responder mode for fast position updates
  • Full two-way Sonardyne Wideband 2 interrogation and reply
  • Li-Ion rechargeable battery pack
  • Optional remote transducer

An on/off switch (3,000 m only) helps to ensure the battery pack is not discharged when not in use. If an umbilical trigger is not available, then the full Wideband transponder mode provides excellent USBL performance in a small, lightweight package.

Remote omni or directional transducers are available for WMT. These make installation on a ROV easier as the remote transducer can be installed where there is good line-of-sight and is easily replaced if damaged. The main body of the transponder can then be installed within the ROV frame where it is well protected from damage.

Need help with your project, get in touch.

Specifications table

Feature Type 8190-3111 Type 8190-3112 Type 8190-7212
Depth Rating 3,000 m 3,000 m 7,000 m
Operating Frequency MF (20–34 kHz) MF (20–34 kHz) MF (20–34 kHz)
Transducer Beam Shape Omni-directional Directional Directional
Source Level
(re 1 µPa @ 1 m)		 High Power 187 dB 193 dB 199 dB
Low Power 181 dB 187 dB 193 dB
Tone Equivalent
Energy (TEE) WBv2+		 High Power 193 dB 199 dB 205 dB
Low Power 187 dB 193 dB 199 dB
Range Precision Better than 15 mm Better than 15 mm Better than 15 mm
Depth Sensor ± 0.5% full scale ± 0.5% full scale ± 0.5% full scale
Communications Interface RS232 (9,600–115,200 baud) RS232 (9,600–115,200 baud) RS232 (9,600–115,200 baud)
External Supply Voltage 24 or 48 V dc (± 10%) 24 or 48 V dc (± 10%) 24 or 48 V dc (± 10%)
External Power Sleep ~650 mW ~650 mW ~650 mW
Wideband Listening ~1 W ~1 W ~1 W
Battery Charging 6 W 6 W 6 W
Peak
(During Transmission)		 <50 W <50 W <50 W
External Power Switch Yes Yes No
Battery Life
(Li-ion 15 V)		 Listening 30 days 30 days 30 days
Continuous 5 Seconds
Interrogation		 Approx. 6 days at low power Approx. 6 days at low power Approx. 6 days at low power
Mechanical Construction Anodised aluminium alloy and plastics Anodised aluminium alloy and plastics Anodised aluminium alloy and plastics
Operating Temperature -5 to 40°C -5 to 40°C -5 to 40°C
Storage Temperature -20 to 55°C -20 to 55°C -20 to 55°C
Dimensions (Diameter x Length) 94 x 501 mm 94 x 513 mm 98 x 513 mm
Weights in Air/Water 5.1/2.2 kg 7.0/3.5 kg 7.0/3.5 kg
Options Remote, Cable Connected Transducer
(see separate datasheet)		 Remote, Cable Connected Transducer
(see separate datasheet)		 None

Manuals and quick start guides


WMT 6 – Manuals

Datasheets


WMT – Datasheets

Software and firmware


WMT 6 – Firmware

Frequently asked questions

6G Terminal Lite Range Test

How can I get the best performance from my long layback tracking operations?

What to consider when mounting acoustic transducers

How to set up an update rate in Ranger 2

Software and firmware

WMT 6 – Firmware

Software and control hardware

6G Terminal Lite Range Test

How to set up an update rate in Ranger 2

Top tips

What to consider when mounting acoustic transducers

Datasheets

WMT – Datasheets

Manuals and quick start guides

WMT 6 – Manuals

Technical bulletin

WMT 6 – Technical Bulletins

Did you know?

WMT is used with Ranger 2 USBL for tracking and communications

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