MiniPointer R300 for survey class ROV:
Like other Pointers, it can work on batteries or being powered by external supply (12 to 30 VDC) and offers a serial link interface (RS232).
Moreover, two pins of the interface connector are dedicated to general purpose Input/Output
that are opto-
The hydrophone connector has two hydrophones inputs; one main hydrophone and an auxiliary hydrophone that may be used for dual capture in order to give acoustic heading for instance
Like other Pointers, the MiniPointer also includes a digital compass and a dual axis
inclinometer. It may be fitted optionally with a high accuracy 10 or 30 bars pressure
The housing is made of high mechanical strength PEEK type of polymer, this also procure high immunity to direct sunlight (UV resistant) and full corrosion free.
SINGLE AND DUAL HYDROPHONE MODES
Single hydrophone mode:
This is the basic mode of operation; in this mode the MiniPointer is fully compatible with other Pointers. The main housing may be attached inside the ROV frame to offer a maximum chock protection.
The hydrophone may be attached directly to the MiniPointer housing (see picture on the right) or offset by up to 5 meters from the housing. In case of hydrophone damage, it can be fixed by using a spare within few minutes, thanks to the wet pluggable hydrophone connector.
Dual hydrophone mode:
This mode allows measuring the location of two separated hydrophones on a single structure (ROV or large offshore steel structure for instance), this dual measurement gives access to the orientation (heading). This may be helpful when working near large steel structures that may affect magnetic compass measurements.