LUMA 250LP
Fast, low-power underwater communication
LUMA™ – the most compact and power efficient through-water wireless optical modems for data transfer anywhere from the splash zones down to 6’000m depth.
Description
The Hydromea LUMA 250LP optical modem combines outstanding performance and energy efficiency in a very compactform factor. Optical communication offers superior data rates, low latency and lowerpower requirements compared to acoustic modems. This makes it the perfect choice for applications such as data download from submerged sensor platforms (landers), as well as wireless interfacing between ROVs/AUVs and deep sea infrastructure.
The LUMA 250LP is very energy efficient, which makes it ideal for battery-powered applications. It can be configured to enter a sleep mode after a specified time of inactivity, and optically woken up from sleep by another modem when the link is re-established.
The software-configurable serial cable interface can be set to RS232 or RS485, which makes the LUMA 250LP the ideal drop-in replacement for cabled connections in many existing systems.
Features:
- Ultra-compact and low weight, ideal for small ROVs/AUVs
- Four transmission power levels: 2 - 5 W
- Wide supply voltage range
- Ultra-low power sleep mode with optical wake-up
- Encryption of data link, ad-hoc networking (optional, on request)
Applications:
- Wireless readout of landers and subsea infrastructure with ROV/AUV
- Low power communication for battery-powered underwater devices
- Wireless video streaming for mini ROVs
- Subsea networks at deep sea sites
Specifications
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Physical Properties
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Operating temperature: min. [°C]
0
Operating temperature: max. [°C]
40
Housing material
Resin
Weight in air [kg]
0.25
Weight in water [kg]
0.1
Width [m]
0.05
Length [m]
0.1
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Operating properties
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Maximum range (sea/fresh water)
7m
Depth rating {m}
6000
Stand-by mode
Y
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General
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Field of Use
short-range underwater data transmission, subsea-construction, data extraction from submerged landers
Year of latest version
2019
Area of Application
subsea constuction ; contactless connector ; data-offloading
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Acoustic properties
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Transducer beam shape
120 deg cone
Acoustics date rate
250 kbp/s (optical)
Error rate
n/a
Beam width
120 deg
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Power supply and communication
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Operating current
300mA
Connector type
SubConn MCIL6M
Power Supply [V]
12V - 36V
Output interface
RS232,RS485 (software switchable)
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Other specifications
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Cables
SubConn MCIL6M pig tail
Additional capabilities
forward error correction, encryption, super low-poer standby mode
Data storage
n/a
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Power consumption
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Standby [W]
0.005
Sending [W]
2-5
Receiving [W]
0.5