6.2 OPERATIONAL CONTROLS
6.2.1 The number of operational controls should be limited to the minimum required for operation.
6.2.2 Double functions of operational controls should be avoided.
6.2.3 The functions of the individual operational controls should be clearly labelled.
6.2.4 The functions of night vision equipment should be activated directly through the operational controls; menu-driven controls should be avoided.
6.2.5 The operational controls should be clearly identifiable in the dark. If illumination is used, the brightness should be adjustable.
6.2.6 The operational controls of night vision equipment should meet the requirements of resolution A.694(17), as well as applicable requirements of international standards.*
6.3 PRESENTATION OF INFORMATION
6.3.1 The status of operation of the equipment should be continuously displayed.
6.3.2 The display should be non-dazzling and non-flickering. The display should be capable of displaying an image of at least 180 mm diagonal.
6.3.3 The selected field of view, if more than one is provided (see paragraph 5.2.4), should be continuously indicated at the operating position.
7 DESIGN AND INSTALLATION
7.1 DURABILITY AND RESISTANCE TO ENVIRONMENTAL CONDITIONS
Night vision equipment should withstand the environmental conditions specified in resolution A.694(17) and in the applicable international standards.*
7.2 INTERFERENCE
With respect to electrical and electromagnetic interference, night vision equipment should meet the requirements of resolution A.694(17) and the applicable international standards.**
7.3 POWER SUPPLY
The power supply of night vision equipment should meet the requirements of resolution A.694 (17) and the applicable international standards. **
7.4 INSTALLATION
7.4.1 Full installation instructions to meet the requirements of paragraphs 7.4.2 to 7.4.6 should be included in the documentation (see section 12).
* Refer to IEC Publication 447
**Refer to IEC Publication 60945
