| Evaluation instructions |
Source |
| Hardware |
Output/displays |
Verify that flicker rate is (or can be set to) lower than 2 Hz or higher than 70 Hz by inspecting hardware displays. |
Section 508, Workforce Investment Act [1194.21(k), 1194.22(j), 1194.25(i)] |
| Verify that bright flashes which occupy a large part of the visual field are avoided to minimize the impact on the visual cortex. |
Section 255, Telecommunications Act [1193.43(f)(3), Advisory Guidance] |
| Software |
|
Verify that the flash rate for blinking text, objects, or other elements does not exceed 2 Hz by inspecting each blinking aspect of the application. |
Microsoft, 1999 |
| Websites |
|
Verify that the flash rate for blinking text, objects, or other elements does not exceed 2 Hz by inspecting each blinking aspect of the site. |
|
| Inspect each page in the site and verify that bright flashes occupying a large part of the visual field (particularly the center) are not used. |
W3C, 1999 |