The SeaSense protocol provides unprecedented levels of control. In addition to the basic LOUT command for the output light level, there are commands to change the dimming curve, customize and recall preset levels, change the power-on level, and limit the output power to match the available power budget. The new Multiray™ LED SeaLite extends the protocol and control with commands to select, combine, and switch the color and beam pattern of the light (Figure 2).
SeaSense-enabled products can work together by grouping multiple devices and operating them as one. Operators can set groups in order to control lights in physical proximity (e.g. starboard or port side), synchronize the beam pattern of a Multiray LED SeaLite with the zoom position of a camera using user presets, or put an entire bank of devices into a power-saving standby mode. Layers of these behaviors can be built on top of one another, as each device can belong to more than one group (Figure 3). The SeaSense protocol also offers broadcast commands which address all connected devices. Group and broadcast commands require multidrop networks or the use of port-mirroring software to combine physical ports into a single virtual serial port.
Figure 3. Group (green) and broadcast (blue) commands: individual devices (red) can be grouped together, and each device can belong to more than one group.
The SeaSense protocol is already a powerful means to expand the capabilities of subsea imaging systems. With scalable control over individual and groups of products, the utility of SeaSense-enabled systems will continue to grow as DeepSea expands their next generation of products. More information is available at www.deepsea.com/SeaSense.
 VISCA is a trademark of Sony Corporation
As seen in the August 2017 issue of Ocean News & Technology magazine (subscribe