3 Definitions
For the purpose of this standard the following definitions apply.
3.1 Automatic control system - A control system that may include a heading, track or speed control system.
3.2 Consistent common reference system - A sub-system of an INS for acquisition, processing, storage and distribution of data and information providing identical and obligatory reference to sub-systems within an INS.
3.3 Integrated navigation system-An INS is a combination of systems that are interconnected to increase safe and efficient navigation by suitably qualified personnel.
3.4 Integrity- Ability of the system to provide the user with information within the specified accuracy in a timely, complete and unambiguous manner, and alarms and indications within a specified time when the system should be used with caution or not at all.
3.5 Multifunction display-A single visual display unit that can present, either simultaneously or through a series of selectable pages, information from more than one operation of a system.
3.6 Sensor-A navigational aid, with or without its own display and control as appropriate,automatically providing information to the INS.
4 Operational requirements
4.1 Functionality
4.1.1 General
4.1.1.1 In addition to meeting the relevant requirements of resolution A.694(17)*, the INS should comply with the requirements of this performance standard.
4.1.1.2 Each part of the INS should comply with all applicable requirements adopted by the Organization, including the requirements of this performance standard. Parts executing multiple operations should meet the requirements specified for each individual function they can control, monitor or perform.
4.1.1.3 When functions or equipment connected to the INS provide facilities in addition to this performance standard, the operation and, as far as is reasonably practicable, the malfunction of such additional facilities should not decade the performance of the INS below the requirements of this standard.
* IEC 60945
