Specifications

MIL-STD-1472E
5.1.4.2 Ramzeof disulay movement. When a wide range of display element movement is
required, small movement of the control sha[l yield a large movement of the display element. When a
small range of display movement is required, a large movement of the control shall result in small
movement of the display, consistent with fml accuracy required.
5.1.4.3 Knob, coarse setting. When a knob is provided for making coarse display element
settings on linear scales- 0.4 to 2.5 mm (0.016 to 0.100 in) tolerance-approximately 150 mm (6 in)
display element movement shall be provided for one complete turn of the knob.
5.1.4.4 Knob, fine setting. For fine setting on linear scales4.2 to 0.4 mm (0.008 to 0.016 in)
tolerance-25 to 50 mm (1 to 2 in) of display element movement shall be provided for one complete
turn of the knob.
5.1.4,5 Bracketing. When bracketing is used to locate a maximum or minimum rather than a
specific value (e.g., tuning a transmitter), the control knob shall swing through an arc of not less than
10° nor
more than 30” on either side of the target value in order to make the peak or dip associated with
that value clearly noticeabk.
5.1.4.6 Lever. coarse setting. When a lever is provided for coarse setting~.4 to 2.5 mm
(0.016 to 0.100 in) tolerance-one unit of dispiay element movement shall be induced by three units of
lever movement.
5.1.4.7 Lever, twodimensiond setting. When a lever is provided to make settings in two
dimensions to coarse tolerances-2.5 mm (O.1 in~ne unit of display element movement shall be
induced by two and one-half units of lever movement.
5.1.4.8 Counter ccmtrol/display ratio. One revolution of a counter knob should produce
approximately 50 counts (i.e., the righthand drum rotates five times).
5.1.4.9 Visual Display Terminals (VDTS). See 5.16.
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