This sensor measures the attitude of the vessel.
Trimble recommends that you mount the cabin sensor to a very solid part of the crane body. Avoid mounting on desks as the sensor reading will not be as accurate as sensors mounted on the vessel body.
The Marine Cutter Suction Dredge system contains a multipurpose mounting plate (P/N 110858). The plate provides additional drill holes to allow firm mounting onto a vessel body.
The sensor can be mounted at various angles. After you mount the sensor, you need to configure the TMC software so that it knows the orientation of this sensor. See Orientating the angle sensors.