CBT CBT Signal Processing & Distribution 2

Question 1

What is 'black burst' used for in an analog broadcast facility?

Accepted Answer

A composite sync reference signal for synchronizing equipment

Answer

Black burst is a composite video signal containing sync and color burst but with no picture information, used as a house reference to synchronize all equipment in an analog broadcast plant.

Question 2

What does the term 'return loss' indicate in a broadcast signal path?

Accepted Answer

The amount of signal reflected back due to impedance mismatch

Answer

Return loss is a measure of how well impedance is matched; a high return loss (in dB) means little signal is reflected back, indicating a good impedance match.

Question 3

What is the bit rate of uncompressed standard-definition serial digital video (SD-SDI)?

Accepted Answer

270 Mb/s

Answer

SD-SDI operates at 270 Mb/s per the SMPTE 259M standard, carrying uncompressed 4:2:2 digital video for standard-definition broadcast.

Question 4

Which color space model is most commonly used in digital broadcast video production?

Accepted Answer

YCbCr

Answer

YCbCr separates luminance (Y) from color difference components (Cb and Cr), allowing efficient bandwidth use in broadcast systems by exploiting human visual sensitivity.

Question 5

What is the purpose of equalization in a long-run SDI cable installation?

Accepted Answer

To compensate for high-frequency signal loss caused by cable length

Answer

Cable equalization restores high-frequency components that are attenuated more than low frequencies over long coaxial runs, ensuring the receiver can recover the digital data.

(CBT) Certified Broadcast Technician Practice Test

(CBT) Certified Broadcast Technician Practice Test

CBT CBT Signal Processing & Distribution 2