Monitor EMC Testing [2D] |

(Applicable to BurnInTest Pro version only) Scrolling H's BurnInTest can be used to help with Electromagnetic Compliance (EMC) Testing to ANSI standard C63.4-1992. Section 11.1.3 of this standard details the requirements for testing of Visual Display Units. In brief, this standard requires that screens of scrolling 'H' characters be displayed while EMC testing takes place. The monitor and the image displayed need to be adjusted by the tester in order to maximize the electromagnetic output of the monitor. (e.g., by selecting maximum brightness and white text on a black background). BurnInTest provides the ability to display a screen of Scrolling 'H' characters and the possibility to adjust,
- | The color of the text
- | The color of the background
- | The Scroll speed (via the duty cycle window, slide bar)
- | The character used, as a replacement for 'H'
- | The font face and font size
The 2D Graphics preferences window can be used to either select the standard 2D graphics load test or the EMC testing scrolling ‘H’ pattern. When activated, the Scrolling ‘H’ pattern fills the entire screen but Alt-Tab can be used to switch back to the main Window or other applications. Scrolling only takes place when the test window is the active window. If there are multiple displays, the ‘Scrolling’ H’s will fill all displays. Reference Test Pattern BurnInTest can be used to help with Computer monitor Electromagnetic Compliance (EMC) Testing with the display of a reference test pattern based on "Recommendation ITU-R BT.1729 (2005). Common 16:9 or 4:3 aspect ratio digital television reference test pattern". This standard requires the display of a reference test pattern for 16:9 and 4:3 displays. In cases where the aspect ratio is different to this, BurnInTest scales the test pattern based on the percentages of the various test pattern components. The components of the test patten are percentages of the display resolution width or height, and are: - Castellated edges, - A gridded background, - A central circle containing: text, white bar, color bars, luminance ramp, B-Y color difference ramp, R-Y color difference ramp, linear horizontal luminance/B-Y color difference/ R-Y color difference frequency sweeps, horizontal luminance staircase, moving bar and a red bar on a yellow background. - Vertical frequency sweeps for luminance, R-Y color difference and B-Y color difference. The left hand vertical frequency sweeps are encoded with 4:2:0 sampling and the right hand vertical frequency sweeps are encoded with 4:2:2 sampling. - The frequency sweeps are sinusoidal. While the test pattern is displayed on the main display, a moving bar is displayed moving left to right with a period of 1 second. At the same time, approximately 60 second sine wave tones are continuously output on the left (392Hz) and right channels (587.3Hz). The right channel is muted for approximately 25ms from approximately the midpoint moving bar marker. High system load and other BurnInTest tests (e.g. audio playback) may impact the moving bar and sine wave tone playback.