Provisions that appear in more than one place in 508 and also in 255
Contents |
Provisions in more than one place in 508
This page shows provisions grouped according to the issues they address regardless of product category, such as "flashing".
Color and contrast settings
21(g) Applications shall not override user selected contrast and color selections and other individual display attributes.
21(j) When a product permits a user to adjust color and contrast settings, a variety of color selections capable of producing a range of contrast levels shall be provided.
25(h) 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.
Info in color
21(i) Color coding shall not be used as the only means of conveying information, indicating an action prompting a response, or distinguishing a visual element.
22(c) Web pages shall be designed so that all information conveyed with color is also available without color, for example from context or markup.
25(g) Color coding shall not be used as the only means of conveying information, indicating an action, prompting a response, or distinguishing a visual element.
Flashing
21(k) Software shall not use flashing or blinking text, objects, or other elements having a flash or blink frequency greater than 2 Hz and lower than 55 Hz.
22(j) Pages shall be designed to avoid causing the screen to flicker with a frequency greater than 2 Hz and lower than 55 Hz.
25(i) Products shall be designed to avoid causing the screen to flicker with a frequency greater than 2 Hz and lower than 55 Hz.
Timeouts
22(p) When a timed response is required, the user shall be alerted and given sufficient time to indicate more time is required.
23(d) Voice mail, messaging, auto-attendant, and interactive voice response telecommunications systems that require a response from a user within a time interval, shall give an alert when the time interval is about to run out, and shall provide sufficient time for the user to indicate more time is required.
25(b) When a timed response is required, the user shall be alerted and given sufficient time to indicate more time is required.
Connectors
23(a) Telecommunications products or systems which provide a function allowing voice communication and which do not themselves provide a TTY functionality shall provide a standard non-acoustic connection point for TTYs. Microphones shall be capable of being turned on and off to allow the user to intermix speech with TTY use.
23(h) Where a telecommunications product delivers output by an audio transducer which is normally held up to the ear, a means for effective magnetic wireless coupling to hearing technologies shall be provided.
25(e) 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.
26(d) Where provided, at least one of each type of expansion slots, ports and connectors shall comply with publicly available industry standards.
Audio amplification
23(f) For transmitted voice signals, telecommunications products shall provide a gain adjustable up to a minimum of 20 dB. For incremental volume control, at least one intermediate step of 12 dB of gain shall be provided.
23(g) If the telecommunications product allows a user to adjust the receive volume, a function shall be provided to automatically reset the volume to the default level after every use.
25(f) 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.
Mechanical controls
23(k) Products which have mechanically operated controls or keys, shall comply with the following: 23k(1) Controls and keys shall be tactilely discernible without activating the controls or keys. 23k(2) Controls and keys shall be operable with one hand and shall not require tight grasping, pinching, or twisting of the wrist. The force required to activate controls and keys shall be 5 lbs. (22.2 N) maximum. 23k(3) If key repeat is supported, the delay before repeat shall be adjustable to at least 2 seconds. Key repeat rate shall be adjustable to 2 seconds per character. 23k(4) The status of all locking or toggle controls or keys shall be visually discernible, and discernible either through touch or sound.
25(c) Where a product utilizes touchscreens or contact-sensitive controls, an input method shall be provided that complies with § 1194-23(k)(1) through (4).
26(a) All mechanically operated controls and keys shall comply with 1194.23(k)(1) through (4).
26(b) If a product utilizes touchscreens or touch-operated controls, an input method shall be provided that complies with § 1194.23(k)(1) through (4).
Text info about non-text objects
This is the most difficult category of possibly redundant provisions, because "non-text objects" contains several subcategories, and there are no clear definitons of some terms. Roughly, they could be subcategories into "images", "actionable objects", and "information-rich formatting". But trying to put all of these under one umbrella may be overreaching....
21(c) A well-defined on-screen indication of the current focus shall be provided that moves among interactive interface elements as the input focus changes. The focus shall be programmatically exposed so that assistive technology can track focus and focus changes.
21(d) Sufficient information about a user interface element including the identity, operation and state of the element shall be available to assistive technology. When an image represents a program element, the information conveyed by the image must also be available in text.
22(g) Row and column headers shall be identified for data tables.
22(h) Markup shall be used to associated data cells and header cells for data tables that have two or more logical levels of row or column headers.
22(n) When electronic forms are used, the form shall allow people using assistive technology to access the information, field elements, and functionality required for completion and submission of the form, including all directions and cues.
22(a) A text equivalent for every non-text element shall be provided (e.g., via “alt”, “longdesc”, or in element content).
22(e) Redundant text links shall be provided for each active region of a server-side image map.
22(i) Frames shall be titled with text that facilitates frame identification and navigation.
22(k) A text-only page, with equivalent information or functionality, shall be provided to make a web site comply with provisions of this part, when compliance cannot be accomplished in any other way. The content of the text-only page shall be updated whenever the primary page changes.
22(l) When pages utilize scripting languages to display content, or to create interface elements, the information provided by the script shall be identified with functional text that can be read by assistive technology.
22(n) When electronic forms are designed to be completed on-line, the form shall allow people using assistive technology to access the information, field elements, and functionality required for completion and submission for the form, including all directions and cues.
24(a) All analog television displays 13 inches and larger, and computer equipment that includes analog television receiver or display circuitry, shall be equipped with caption decoder circuitry which appropriately receives, decodes, and displays closed captions from broadcast, cable, videotape, and DVD signals. As soon as practicable, but not later than July 1, 2002, widescreen digital television (DTV) displays measuring at least 7.8 inches vertically, DTV sets with conventional displays measuring at least 13 inches vertically, and stand-alone DTV tuners, whether or not they are marketed with display screens, and computer equipment that includes DTV receiver or display circuitry, shall be equipped with caption decoder circuitry which appropriately receives, decodes, and displays closed captions from broadcast, cable, videotape, and DVD signals.
24(c) All training and informational video and multimedia productions which support the agency’s mission, regardless of format, that contain speech or other audio information necessary for the comprehension of the content, shall be open or closed captioned.
21(e) When bitmap images are used to identify controls, status indicators, or other programmatic elements, the meaning assigned to those images shall be consistent throughout an application’s performance.
21(f) Textual information shall be provided through operating system functions for displaying text. The minimum information that shall be made available is text content, text input caret location, and text attributes.
