This ARP describes methods for measuring the visual performance of direct view cathode ray tube displays used in aircraft flight decks and cockpits. Procedures may vary depending upon the type of display (for example, monochrome, color shadowmask, beam index, etc.), but all types are considered.
This SAE Aerospace Recommended Practice (ARP) covers the general requirements and test procedures for illuminating systems for integrally lighted aircraft instruments in order to provide (a) uniformity of illumination within each instrument, (b) legibility of instrument presentation under daylight or integral light, and (c) uniformity of illumination between instrument displays.
This ARP covers the recommended requirements for the lighting and characteristics of instruments; information plates and displays; emergency, cautionary, advisory and status displays; circuit breaker and toggle switch positions; and the recommended requirements for the utility lighting system.