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Self contained products shall be usable by people with disabilities
without requiring an end- user to attach assistive technology to the product.
Personal headsets for private listening are not assistive technology.
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When a timed response is required, the user shall be alerted
and given sufficient time to indicate more time is required.
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Where a product utilizes touchscreens or contact-sensitive
controls, an input method shall be provided that complies with the following:
(1) The position of any operable control shall be determined
with respect to a vertical plane, which is 48 inches in length, centered
on the operable control, and at the maximum protrusion of the product within
the 48 inch length (see Figure 1 of this part).
(2) Where any operable control is 10 inches or less behind
the reference plane, the height shall be 54 inches maximum and 15 inches
minimum above the floor.
(3) Where any operable control is more than 10 inches
and not more than 24 inches behind the reference plane, the height shall
be 46 inches maximum and 15 inches minimum above the floor.
(4) Operable controls shall not be more than 24 inches
behind the reference plane.
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When biometric forms of user identification or control are
used, an alternative form of identification or activation, which does not
require the user to possess particular biological characteristics, shall
also be provided.
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When products provide auditory output, the audio signal shall
be provided at a standard signal level through an industry standard connector
that will allow for private listening. The product must provide the ability
to interrupt, pause, and restart the audio at anytime.
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When products deliver voice output in a public area, incremental
volume control shall be provided with output amplification up to a level
of at least 65 dB. Where the ambient noise level of the environment is
above 45 dB, a volume gain of at least 20 dB above the ambient level shall
be user selectable. A function shall be provided to automatically reset
the volume to the default level after every use.
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Color coding shall not be used as the only means of conveying
information, indicating an action, prompting a response, or distinguishing
a visual element.
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When a product permits a user to adjust color and contrast
settings, a range of color selections capable of producing a variety of
contrast levels shall be provided.
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Products shall be designed to avoid causing the screen to
flicker with a frequency greater than 2 Hz and lower than 55 Hz.
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Products which are freestanding, non-portable, and intended
to be used in one location and which have operable controls shall comply
with the following:
(1) The position of any operable control shall be determined
with respect to a vertical plane, which is 48 inches in length, centered
on the operable control, and at the maximum protrusion of the product within
the 48 inch length (see Figure 1 of this part).
(2) Where any operable control is 10 inches or less behind
the reference plane, the height shall be 54 inches maximum and 15 inches
minimum above the floor.
(3) Where any operable control is more than 10 inches
and not more than 24 inches behind the reference plane, the height shall
be 46 inches maximum and 15 inches minimum above the floor.
(4) Operable controls shall not be more than 24 inches
behind the reference plane.