The manufacturer shall declare compliance with these requirements and shall provide relevant documentation. The declarations, documentation and where necessary, the EUT shall be checked.
The manufacturer shall also declare the composition of the EUT and the category for durability and resistance to environmental conditions specified in IEC 60945 for each unit of the EUT.
4.2 Required functions and their availability
At night, night vision equipment should be capable of detecting objects above the water surface within a certain distance from one's own craft, and of displaying the information pictorially in real time, to assist in collision avoidance and safe navigation.
4.3 Continuous operation
Night vision equipment on board HSC, while navigating at sea, should be capable of continuous operation from after sunset until before sunrise. After the equipment has been switched on it should be operational in less than 15 minutes.
4.4 Field of view
The required horizontal field of view should be at least 20°, 10°on either side of the bow. The vertical field of view should be at least 12°and should be sufficient to enable the equipment to fulfil the performance requirements of this standard as well as being able to see the horizon.
Optionally other fields of view may be provided. Their selection should be made with a nonlocking switch, which returns to the required field of view when released.
4.5 Pan range of the field of view
The axis of the field of view should be capable of being moved at least 20｡?orizontally to either side.
4.6 Pan speed of the field of view
By activation of a single control element, the axis of the field of view should be capable of being returned automatically to the ahead position at a minimum angular speed of 30°/s.
4.7 Vertical trim of the field of view
The vertical axis of the field of view should be capable of being adjusted no more than 10° to compensate for the trim of the vessel.
4.8 Heading Indication
When inside the field of view, the heading of the craft should be indicated by a marker on the display with a maximum error not greater than +/- 1 degree.
When outside the field of view a visual indication of relative bearing with a maximum error of +/- 1 degree.
4.9 Roll or pitch
The performance requirements in this standard should be achieved under the normal roll and pitch conditions experienced in high speed craft.
4.10 Clear view
Arrangement should be provided to ensure efficient cleaning of the sensor head/lens from the operating position.
