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CEDIA ESPA EST Practice Test

Category - DHTI

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You are experiencing dark bars on your TV video display. Which of the following may be the most probable cause of this issue?

AC power interference
Insufficient cable bandwidth
Signal interruption between TV and modulator
High signal strength

Explanation

Answer - A - The most probable cause of this issue is AC power interference.

Key Takeaway: Dark bars are caused by AC power interference. You should space the video cable at least 18 inches from the AC power lines to avoid AC interference.

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