CTS AV Signal Flow and Distribution 5

Question 1

In HDBaseT signal distribution, which of the following is NOT carried over a single Cat cable?

Accepted Answer

USB 3.0 SuperSpeed data

Answer

HDBaseT carries video, audio, Ethernet, control signals, and power (PoH), but USB 3.0 SuperSpeed is not part of the HDBaseT specification.

Question 2

Which term describes the condition where two identical audio signals are combined but one is 180° out of phase, resulting in signal cancellation?

Accepted Answer

Polarity inversion cancellation

Answer

Polarity inversion cancellation (phase cancellation) occurs when identical signals with reversed polarity are summed, causing destructive interference.

Question 3

A video signal is described as 1080i/60. What does the '60' represent in this context?

Accepted Answer

60 fields per second (30 frames)

Answer

In interlaced notation, the number refers to fields per second; 1080i/60 delivers 60 fields (odd + even lines alternating), equating to 30 complete frames per second.

Question 4

A system designer wants to send a 4K HDR signal with Dolby Atmos audio over a network. Which specification must the HDMI cable and switches support?

Accepted Answer

HDMI 2.1

Answer

HDMI 2.1 supports 4K/120Hz, HDR10+, and the Enhanced Audio Return Channel (eARC) required for Dolby Atmos object-based audio.

Question 5

In a balanced audio line, the shield of the cable is connected to pin 1 of an XLR connector. What is the shield's primary purpose?

Accepted Answer

Reject electromagnetic interference by grounding noise

Answer

The shield surrounds the inner conductors and is grounded to divert induced electromagnetic interference away from the audio signal.

(CTS) Certified Technology Specialist Practice Test

(CTS) Certified Technology Specialist Practice Test

CTS AV Signal Flow and Distribution 5