Underwater Acoustic modem 6
Modem 6 underwater acoustic modems are designed to wirelessly transfer sensor data from under the water to the surface at speeds between 200 and 9,000 bps.
Description
Built around our field-proven 6G hardware and Wideband 2 acoustic signal platforms, the technology found inside each underwater acoustic Modem 6 instrument has safely transferred many gigabytes of clients’ data so whatever your application, and whatever the water depth, you can be assured of reliable communications performance.
UNDERWATER ACOUSTIC MODEM 6
We offer sub-surface, OEM (no housing) and surface-deployed acoustic modems to suit any operational deployment scenario and data transfer mission. You can mount them on seafloor instruments, in an AUV, suspended from a surface buoy or in the hull of an unmanned surface vehicle, and leave them for days, months or years. Uniquely, Modem 6 instruments can be upgraded to offer positioning and navigation capability (e.g. LBL and USBL positioning) if your operational needs become more complex.
OUR ACOUSTIC UNDERWATER MODEM OPTIONS
Our family of sub-surface Modem 6 instruments benefit from same mechanics and electronics you’ll find in our range of USBL and LBL positioning transponders. These are trusted by leading offshore energy, ocean science and naval customers to perform in the most demanding marine environments, shallow or deep, and all operational scenarios. They are easy to install and all come with a battery pack if external power is not available.
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Modem 6 Sub-Mini Available in 1,000 metre depth rated housing. Offers excellent horizontal, shallow and deep performance. Internal rechargeable battery provides up to 35 days standby. • MF omni • On/Off switch for storage • 24 V dc external power input • Advanced transmitter power control |
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Modem 6 Mini Available in 3,000 metre depth rated housing. With its integrated li-ion battery and isolated external power supply, Mini is most suitable for vehicles. • MF and LMF transducers • RS232/485 serial interface • 24/48 V dc isolated external power input • External IO control • OEM option |
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Modem 6 Standard Similar to a Modem 6 Midi but with larger battery pack options enables deployment for years or even decades. Alkaline and lithium battery options. Optional acoustic release for recovery. Wide range of housing materials available. • High energy 100 Ahr battery pack • MF/LMF omni or directional transducers • External power input and output • 3,000/5,000/7,000 metre housings |
Technical information
| Feature | Modem 6 Sub-Mini 8377-1111 |
| Depth Rating | 1,000 metres |
| Operational Frequency | MF (21–32.5 kHz) |
| Transceiver Beam shape | Omni-directional |
| Maximum Data Rate | 9000 bps |
| Serial Port (RS232) | 2400–115200 baud |
| Data Buffer/Storage | 512 kB |
| Range* | 1–2 km |
| Transmit Source Level (dB re. 1 µPa @ 1 m) (External Power) (Battery) |
187 dB 184 dB |
| Receive Sensitivity (dB re 1 μPa) | <85 dB |
| Power Supply | Rechargeable NiMH battery or external 24 V |
| Battery charge 0-100 % | 5 hours |
| Quiescent Life (Battery) | >35 Days |
| Connector 5-Way (Standard) | Subconn MCBH5M |
| Mechanical Construction | Aluminium alloy, anodised |
| Operating Temperature | -5 to 40ºC |
| Storage Temperature | -20 to 55ºC |
| Dimensions (Length x Diameter) | 426 x 79 mm |
| Weight in Air/Water | 3.2/1.3 kg |
| Battery Charger | 8370-011-01 |
| Pin | Description |
| 1 | RS232 comms In (RX) |
| 2 | 0 V |
| 3 | RS232 comms Out (TX) |
| 4 | External power 24 V |
| 5 | N/A |
