Paragraph 2

The proper operation of the DSC facilities shall be tested at least once a week by means of a test call, when within communication range of a coast station fitted with DSC equipment. Where a ship has been out of communication range of a coast station fitted with DSC equipment for a period of longer than one week, a test call shall be made on the first opportunity that the ship is within communication range of such a coast station.

Where the reserve source of energy is not a battery (for example, a motor generator), the reserve source of energy shall be tested weekly.