# Monitor EMC Testing

(Applicable to BurnInTest Pro version only)

BurnInTest can be used to help with Electromagnetic Compliance Testing (EMC) 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 black text on a white 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.