During a site survey you notice that several CRT displays in the vicinity of the engineering copy center have sporadic visual distortion. What is the MOST likely cause?

Question

Quizplus · Accepted Answer

CRT displays are susceptible to electromagnetic interference (EMI) from other equipment in the vicinity, especially if the equipment emits strong magnetic fields. This can cause visual distortion on the screens. Radio frequency interference (RFI) and electromagnetic compatibility (EMC) can also cause similar issues, but given the location near the copy center, EMI is the most likely cause. Fast transients and electromagnetic discharge (ESD) are less likely to cause visual distortion on CRT displays.

During a Site Survey You Notice That Several CRT Displays