CBT Signal Processing & Distribution Flashcards
6 cards from real CBT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CBT Signal Processing & Distribution flashcards as text
What is 'black burst' used for in an analog broadcast facility?
Answer: A composite sync reference signal for synchronizing equipment
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.
What does the term 'return loss' indicate in a broadcast signal path?
Answer: The amount of signal reflected back due to impedance mismatch
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.
What is the bit rate of uncompressed standard-definition serial digital video (SD-SDI)?
Answer: 270 Mb/s
SD-SDI operates at 270 Mb/s per the SMPTE 259M standard, carrying uncompressed 4:2:2 digital video for standard-definition broadcast.
Which color space model is most commonly used in digital broadcast video production?
Answer: YCbCr
YCbCr separates luminance (Y) from color difference components (Cb and Cr), allowing efficient bandwidth use in broadcast systems by exploiting human visual sensitivity.
What is the purpose of equalization in a long-run SDI cable installation?
Answer: To compensate for high-frequency signal loss caused by cable length
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.
What does a frame synchronizer do in a broadcast signal path?
Answer: Aligns an asynchronous input video source to house sync timing
A frame synchronizer buffers an incoming video signal and outputs it re-timed to the facility's reference sync, allowing asynchronous sources such as satellite feeds to be used live.