Specifications
MIIAT’D-1472E
follower (cursor or tracking symbol) to transit beyond the edge of the display, indicatom shall be
provided in order to aid the operator in bringing the follower back onto the display.
5.4.3 .2,3.1 Hand-operated.
5,4.3 .2.3.1.1 SBific Use In addition to general use, hand-operated isometric joysticks may
be used as vehicle controllers, aiming sensors, and mounting platforms for secondary controls, such
as thumb- and finger-operated switches. (Operation of secondary controls has greater induced error on
the isometric
hand grip than does displacement handgrip joysticks.)
5.4.3 .2.3.1.2 Dynarm
“ccharacteristics. Maximum force for full output shall be not more than
118 N (26.7 lb).
5.4.3 .2.3.1.3 Dimensions, resistance, and clearance. Dimensions, resistance, and clearance
shall conform to 5.4.3.2.2.1.3.
5.4.3 .2.3,2 Fingeroperated.Dimensions, resistance, and chrance shall conform to
5.4.3.2.2.3.3.
5.4.3 .2.3.3 Thumbtip/finEertiP operated.
5.4.3 .2.3.3.1 Smxific use. Thumbtip/fingertip operated joysticks may be mounted on a
handgrip, which serves as a steady rest to damp vibrations or increase precision. If so mounted, the
hand grip shall not simultaneously function as a joystick controller.
5.4.3 .2.3.3.2 Dimensions, resistance and clcamnce. tinsions, resistance, and clearance
shall conform to 5.4.3.2.2.3.3.
5.4.3.2.4 Ball control (Also known as track ball, ball tracker, joyball, and rolling ball.)
5.4.3 .2.4.1 ~. A ball cxmtrol suspended on low-friction bearings maybe used for various
control functions such as data pickoff on a display. The ball control cannot provide an automatic
return to point of origin, hence if used in applications requiring automatic return to origin following an
enhy or readou~ the interfacing system must provide this. Because the ball can be rotated without
limit in any direction it is well suited for applications where them may be accumulative travel in a given
direction. If an application allows the hall to drive the follower on the display off the edge of the
display, indicators shall be provided to advise the operator how to bring the follower back onto the
display.
Ball contrcda shouid be used only as position controls (i.e., a given movement of a ball
makes a proportional movement Oftilefbihmcro nthedisphty).
5.4.3 .2.4.2 ~~
bbaUdalbalMecapaMen fXmatiOninany
ktimmm~aymmbtimofxhy~tvd~. Whenmovedin either thexory
dimctbs alone* shall be no apparent cross-coupling (follower movement in the orthogonal
direction). While manipulating the cxmtd, neither backiash nor cross-coupling shall be apparent to the
operator. Control ratios and dynemic featum.sshall IIMXXthe dual requirement of rapid gross
posikahag and smoo&l&precise fw positioning.
5.4.3 .2.4.3 Limb support. When trackball controls are used (o make precise or continuous
3dJUStYTlW!tS, wrist support or arm wppon or boih ?thtdl be fwowded. {& 5A.3.2.i.4. j
5.4.3 .2,4.4 Dimensions, resistanceand clearance. Dimensions, resistance, and clearances
<l)~}llld~’(mfl}rm[Othe ~’riteri;lin
Ficure 19 The smn~r diametrr hall cnntrnls shmll(l he w+ onlv
wlwrc space avaikdi..lityisvery ltite~ and when them isno ncccl
for precision. prefe~.d mounting IS
1~11it sh~ll’{1](i(’s~lt~p(s~cFigllre I~1