MIL-STD-411F
MIL-STD-1472 - Human Engineering Design Criteria for Military Systems, Equipment and Facilities
(Unless otherwise indicated copies of the above specifications and standards are available from the Standardization Document Order Desk, 700 Robbins Ave., Bldg. 4D, Philadelphia, PA
19111-5094.)
2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
3. DEFINITIONS
3.1 Abbreviations and acronyms. The abbreviations and acronyms used in this standard are defined as follows:
a. crt - cathode ray tube b. db - decibel
c. fc - footcandle d. fL - footlambert
e. Hz - Hertz (cycles per second)
f. NVIS - night vision imaging system
g. VSTOL - vertical and short take off and landing h. VTOL - vertical take off and landing
3.2 Alert signal. A signal which alerts the aicrew to the existence of a warning, caution, or advisory condition.
3.3 Angle of incidence. The angle between the line of direction of anything (as a ray of light or line of sight) striking a surface and a line perpendicular to that surface drawn to the point of contact.
3.4 Annunciator. A cueing device which is activated only when required to provide status or condition information of a warning, caution, or advisory nature to the aircrew. An annunciator may be any mechanically, electrically, or electronically driven device used to produce an audio, visual or tactual cue, verbal message, or any similar alerting signal.
3.5 Audio signal. A signal which is heard rather than seen or felt.
3.5.1 Audio caution/master caution signal. An audible signal which indicates the existence of a particular impending dangerous condition requiring attention, but not necessarily immediate action.
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