6.2 OPERATIONAL CONTROLS
The operational controls of daylight signalling lamps should meet the requirements of resolution A.694(17) and the applicable international standards.
7 DESIGN AND INSTALLATION
7.1 DURABILITY AND RESISTANCE TO ENVIRONMENTAL CONDITIONS
7.1.1 The illuminant should be safely fitted in the daylight signalling lamp; use of screwed sockets should be avoided.
7.1.2 Daylight signalling lamps should be designed in such a way that the illuminant can be easily replaced also in the dark.
7.1.3 The sighting mechanism should be mounted in a fixed attitude, parallel to the optical axis.
7.1.4 All parts of daylight signalling lamps should be made of anti-magnetic material.
7.1.5 Daylight signalling lamps should be so constructed that the accumulation of condensed water is avoided.
7.1.6 The materials used should withstand heat generation during operation.
7.1.7 With respect to durability and resistance to environmental conditions, daylight signalling lamps should meet the requirements specified in resolution A.694 (17) and in the applicable international standards.*
7.2 INTERFERENCE
With respect to electrical and electromagnetic interference daylight signalling lamps should meet the requirements of resolutions A.694 (17) and A.813(19) and the applicable international standards*.
7.3 POWER SUPPLY
7.3.1 Daylight signalling lamps should not be solely dependent upon the ship's main or emergency sources of electrical energy.
7.3.2 Daylight signalling lamps should be provided with a portable battery with a complete weight of not more than 7.5 kg.
7.3.3 The portable battery should have sufficient capacity to operate the daylight signalling lamp for a period of not less than 2 h.
7.3.4 The power supply of daylight signalling lamps should meet the requirements of resolution A.694(17) and the applicable international standards.*
*Refer to IEC Publication 60945
