CTS AV Signal Flow and Distribution 4 — Questions and Answers
Question 1: A 4K/60Hz signal requires transmission over a long run. Which cable type is MOST appropriate for maintaining signal integrity?
- Standard HDMI 1.4 cable
- Fiber optic HDMI cable (Correct answer)
- Composite video cable
- Standard VGA cable
Correct answer: Fiber optic HDMI cable
Fiber optic HDMI cables support 4K/60Hz over long distances without signal degradation that plagues copper HDMI at extended lengths.
Question 2: Which signal distribution method allows a single source to be sent to multiple displays WITHOUT active amplification?
- Matrix switcher
- Passive splitter (Correct answer)
- Video wall processor
- Signal extender
Correct answer: Passive splitter
A passive splitter divides one signal among multiple outputs without amplification, though signal strength decreases with each split.
Question 3: In an AV system, what is the primary function of a sync stripper?
- Removes audio from composite video
- Separates the sync signal from a composite video signal (Correct answer)
- Amplifies horizontal sync pulses
- Converts interlaced to progressive scan
Correct answer: Separates the sync signal from a composite video signal
A sync stripper isolates the sync component from a composite video signal, which is useful when feeding RGB monitors or scan converters.
Question 4: A technician notices color banding artifacts on an LED display fed via HDMI. The MOST likely cause is:
- Excessive cable length causing timing errors
- 8-bit color depth limitation producing visible steps in gradients (Correct answer)
- Incorrect scan rate setting on the source
- Faulty HDCP handshake
Correct answer: 8-bit color depth limitation producing visible steps in gradients
Color banding in gradients typically indicates limited color depth (8-bit vs 10-bit), which creates visible steps rather than smooth transitions.
Question 5: Which AV-over-IP protocol is specifically designed for low-latency, lossless video at 1G network bandwidth?
- SDVoE (Correct answer)
- NDI
- ZeroMQ
- RTSP
Correct answer: SDVoE
SDVoE (Software Defined Video over Ethernet) delivers zero-frame-latency, uncompressed video over standard 1G/10G Ethernet infrastructure.
Question 6: When distributing audio via Dante, what determines the maximum number of channels at 48 kHz/24-bit on a 1 Gbps network?
- The number of Dante-enabled devices on the network
- Available network bandwidth and protocol overhead (Correct answer)
- The clock source domain configuration
- The sample buffer size setting
Correct answer: Available network bandwidth and protocol overhead
Dante channel capacity is ultimately governed by available network bandwidth; at 1 Gbps, hundreds of 48kHz/24-bit channels are theoretically supportable.
Question 7: A presentation system uses a 1×8 HDMI distribution amplifier. If the source outputs 5V HDMI, what voltage should each output ideally provide?
- 0.625V (divided equally)
- 5V (regenerated at full level) (Correct answer)
- 3.3V (standard logic level)
- 2.5V (half-power split)
Correct answer: 5V (regenerated at full level)
A distribution amplifier actively regenerates the signal at each output, delivering the full 5V HDMI level rather than dividing the source voltage.
CTS AV Signal Flow and Distribution 4
A 4K/60Hz signal requires transmission over a long run.
Which cable type is MOST appropriate for maintaining signal integrity?