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RCDD · Question #185
RCDD Question #185: Real Exam Question with Answer & Explanation
The correct answer is C. Combiner. At the headend, a combiner merges multiple modulator outputs into a single composite RF signal for distribution across the CATV network.
Question
The headend has several modulators assigning frequencies for distribution to the CATV network. What distribution device should you use immediately at the headend to distribute the modulator's output signals to CATV system?
Options
- ASplitter
- BDirectional coupler
- CCombiner
- DMultiport tap
Explanation
At the headend, a combiner merges multiple modulator outputs into a single composite RF signal for distribution across the CATV network.
Common mistakes.
- A. A splitter divides one input signal into multiple outputs, which is the opposite function needed at the headend where multiple signals must be merged into one.
- B. A directional coupler is used mid-distribution to tap a portion of signal from a trunk line while passing the remainder forward, not to aggregate multiple modulator outputs.
- D. A multiport tap is a subscriber-facing device installed on the distribution plant to provide drop connections to outlets, not to consolidate headend equipment signals.
Concept tested. CATV headend signal combining function
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