HYDROMEA Luma X User manual

a fast, long-range, optical underwater communication system
Installation Guide
10/2020

2 LUMA X 10/2020
Contents
1Introduction ............................................................................................................................ 3
2Operation ................................................................................................................................ 3
2.1 Setup ................................................................................................................................ 3
2.2 Operation ......................................................................................................................... 3
3Maintenance ........................................................................................................................... 3
4Electrical and Software Characteristics .................................................................................. 4
5Mechanical Characteristics ..................................................................................................... 5

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1Introduction
The LUMA X is an optical modem for fast, reliable underwater communication. Each LUMA X is
a full transceiver and thus capable of half-duplex communication (transmission and reception).
2Operation
2.1 Setup
Attach both modems to their respective host systems using matching female SubConn Ethernet
Circular 8 pin connectors such as DIL8F, DBH8F or DOM8F. Please make sure to match the
pinout provided in Electrical and Software Characteristics.
•Apply a suitable supply voltage (12 V –36 V).
•When properly aligned and within communication range, the two modems now provide
a half-duplex communication link.
2.2 Operation
The modem provides a completely transparent connection and it will broadcast all data
received from the serial or ethernet interface over the optical interface.
Thermal fold-back: The emitter of the modem consists of 15 high-power LEDs
composed of 5 banks of 3 LEDs. During normal operation all 15 LEDs are transmitting in
parallel to provide the highest possible transmission range. If the circuit board
temperature rises above 60°C the modem will dynamically switch off emitter banks until
the temperature returns to a safe level.
3Maintenance
Please wash the modem with warm water (only) to remove any built-up which could negatively
affect its operation. Apply a thin film of silicone grease to the rubber part of the connector pins
to protect the connector and to facilitate mating. For maintenance details regarding the
connector follow SubConn's instructions.
WARNING:
•bright LED light source, do not look directly at emitter
•a few people may experience epileptic seizures when
viewing flashing lights

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4Electrical and Software Characteristics (*)
(*) subject to change without notice
Supply voltage (Vs)
12 –36 V
Power consumption
1 W (active mode, receiving)
2 –5 W (active mode, transmitting)
Range
> 50m (164 ft) (depending on turbidity)
Data rate (optical)
1 Mbit/s –10 Mbit/s
Data rate (Ethernet)
10/100 Mbit/s
Data rate (serial)
Software selectable:
9600, 19200, 38400, 57600, 115200, 204800, 227556, 256000,
512000
Transmission power
Software selectable:
1, 2, 3, 4 or 5 banks with 3 LEDs each
Interface
Software selectable:
Ethernet
RS232
RS485
Emission wavelength
480 nm
Beam pattern
120 degree cone
Connector pinout
1: GND
2: Vcc
3: RS232 RX / RS485 D+
4: RS232 TX / RS485 D-
5: Ethernet RX-
6: Ethernet RX+
7: Ethernet TX-
8: Ethernet TX+

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5Mechanical Characteristics (*)
Length x Diameter
(Housing)
113 x 60 mm (4.5" x 2.4")
Weight in air
650 g (1 lb 7 oz)
Weight in water
300 g (10.5 oz)
Connector
SubConn Ethernet Circular 8 –DBH8M
Depth rating
6000 m (19000 ft)
(*) subject to change without notice
Disclaimer: HYDROMEA ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY
RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL HYDROMEA BE LIABLE FOR ANY DIRECT, INDIRECT,
ONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS,
BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF
HYDROMEA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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