Page 56: of Marine Technology Magazine (November 2011)

56MTRNovember/December 2011products DeepSea Power & Light introduced the Nano SeaCamunderwater video camera, a high resolution camera in a tiny package that goes deep. With a diameter of only 25mm (0.985?) anda length of 88.2mm (3.47?), includ-ing the connector, the Nano SeaCam comes in a truly tiny package. The standard 6013-T8 aluminum hous- ing is rated to 6km depth and anoptional 6Al-4V titanium housing ofthe same size is rated to 12km for deeper or long term immersion appli-cations. The camera comes with its own standard mounting bracket but can also be mounted simply by using a small hose clamp or zip tie ifdesired. The Nano SeaCam?s power requirements are minimal and versa- tile, requiring only 1W max with an input voltage range of 7-32 Vdc. Camera resolution is rated at 620TVL making it suitable for nearlyany inspection requirement and the camera is available with its output in either NTSC or PAL composite video format. The Nano SeaCam operates with minimum illumination in therange of 0.04 lux and automaticallyswitches from color to black and white output in low light conditions for best resolution and contrast, pro- ducing optimum picture quality under a variety of lighting conditions. Using a proprietary fixed-focus lens, the Nano SeaCam has a 70 degree diagonal angle of view in water and provides a sharp, crystal clear high resolution image as close in as 25.4mm (1?). www.deepsea.com Nano SeacamEIVA Releases Accurate Time Tagging Unit EIVA released a new Accurate Time Tagging Unit (ATTU), the succes- sor of the EIVA TimeBox. The EIVA ATTU is a time synchronized inter- face unit providing the ultimate solution for precise time tagging of seri- al communication data from any sensor used in marine surveys. The ATTU thus facilitates time tagging of sensor data with accuracy better than 50µsec. This accuracy is obtained through interface with GPS PPS signal information and sophisticated application of Kalman filtering tech-niques to stabilize the internal clock of the ATTU. As the ATTU is syn- chronized through use of GPS the performance and accuracy is dependent on the availability and quality of the GPS PPS signal. The ATTU features either 8, 16 or 24 ports serial RS232 communications utilizing RJ45 connections. Optionally the ATTU furthermore provides for selection of each individual port from serial RS232, RS422 or RS485 communications, if required. www.eiva.dk MTR#9 (50-64):MTR Layouts 11/29/2011 9:35 AM Page 56