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Construction Coordinator 1 to 2 Lesson 5
Terms in this set (10)
A directional coupler
Tap port leg can supply signal to a multiple dwelling unit (MDU) or a smaller number of customers while maintaining the maximum amount of signal on the original cable.
The signal power level in a directional coupler
Is greater at the tap port than at the input port when connected properly.
Which of the following is true?
To calculate the directional coupler's output port and tap port signal levels in dBmV, first obtain the manufacturer's specifications for insertion losses.
When comparing different sizes of directional couplers with identical input signal levels,
The DC-12's resulting tap port signal voltage levels are lower and output port signal voltage levels are higher than the respective port output levels for DC-7.
What is the output port signal level at 547.25 MHz for a directional coupler when: (1) the input signal level is 35.0 dBmV at 547.25 MHz; (2) the output port insertion loss value is 1.4 dB at 547.25 MHz and 0.7 dB at 55.25 MHz; (3) the tap port insertion loss value is 16.2 dB at 547.25 MHz and 15.9 dB at 55.25 MHz; and (4) the tap to output port isolation value is 18 dB at both 547.25 MHz and 55.25 MHz?
A typical power inserter faceplate
Contains electronic components, cover bolts, and interconnect pins.
Which of the following describes a power inserter?
It contains a high-pass filter network that passes RF signals between the two RF/AC ports and blocks 60-Hz 60 VAC between the same two ports.
Which of the following statements is true?
For each power inserter, the system design must ensure that: (1) the current required by any one RF/AC port does not exceed that port's power-passing specification; and (2) the current required by both RF/AC ports does not exceed the AC input port power-passing specification.
Calculate the capacitive reactance of a power inserter's feed-through capacitor when: (1) the frequency is 60 Hz; and (2) the capacitance value is 1,000 pF.
What is the AC input voltage of a power inserter when: (1) the cable between the power supply and the power inserter is 200 feet long; (2) the power supply cable's DC loop resistance is 1.07 ohms/1,000 feet; (3) the power supply output voltage is 60 VAC; and (4) the total current requirement is 11.4 amps?
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