Specifications

MIL-STD-1472E
5.1.3 Movement relationship.m
5.1.3.1 Lackofambitity. Display indicators shall clearly and unambiguously dkect and gui&
the appropriate cmntrolresponse. The response of a display to control movements shall be consistent,
predictable, and compatible with the operatofs expectations.
5.1.3.2 Tie lag. The time lag between system response to a control input and display
presentation of that response shall be
minimi@ consistent with safe and effective system operation.
5.1.3.3 Movim-po inter circular scales. Clockwise movement of a rotary control or forward,
upward or tightwad movement of a linear control shall produce a clockwise movement of circular
scale pointers and an increase in the magnitude of the setting.
5.1.3.4 Movimz-tm
inter linear scales. Clockwise movement of a rotary control or forward,
upward, or rightward movement of a iinear control shall produoe a movement up or to the right for
horizmtal and vertical scale pointers and an increase in the magnitude of the reading.
5.1.3.5 Fixed-pointer circular scale. Displays with moving scales and fixed pointers or cursors
should be avoided. When circular, fixed-pointer, moving-scale indicators are necessary, clockwise
movement of a rotary control or forward, upwar~ or nghtward movement of a linear control shall
normally produce a counterclockwise movement of tbe scale and an increase inthe magnitude of the
reading.
5.1.3.6 Fixed winter linear scale. When use of vertical or horizontal fixed-pointer, moving-
scale indicators is necessq,
clockwise movement of an associated rotary control or forward, upward,
or rightward movement of a linear contxolshall normally produce a movement of the scale down or to
the ieil and an increase in the magnitude of the reading.
5.1.3.7 Direct iinkatz
e. When a control and display are dircctIy linked (e.g., radio frequency
selector and station pointer), a rotary control shall be used if the indicator moves through an arc of
more than 18V’.If the indicator moves through an arc of Iessthmt 180”,a iinearcontrol may be@
pxovkkd b path of control movement parallels the average path of the indicator movement and the
indicatorand c4xttr01move in the same relative direction.
5.1.3.8 Common plane. Directionof control movements shall be consistent with related
movements of associated displays, equipment components, or vehicles.
5.1.3.9 Parallel movement. Direction-of-movement relationships shall be adhered to when
contm!and display me pamlld in line of rnovenxxL
5.1.3.10- When control-display relationships Specifkd herein cannot be adhered to,
controls shall be clearly labeled (see para 5.5) to indicate the direction of control movement requhed.
5.1.3.11 Movement direction. When a rotary control and a linear dispiay are in the same plane,
the part ofthe control adjacent to the display shall move in the same direction as the moving part of the
display.
5.1.4 ControVdisPlavmovement ratio.
5.1.4,1 Minimizationof time, Control/display ratios for coritinuous adjustment contmis shaii
nmirnme the time mquiA w MMAGJAMI i.wdml moscmmts (skwiqg apd
fine adjusting), corts+wcnt
with display size, tolerance requirements, viewing distance, and time delays.