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- All remote controls for a home theater/automation system use infrared to transmit commands to the receiver.
b. False
b. Structured wiring
c. RF
d. Any of the above
a. Bluetooth.
b. Ethernet.
c. PLC.
d. None of the above
a. Appliance
b. Bridge
c. Lamp
d. All of the above
a. True
b. False
a. crossed pair.
b. open pair.
c. shorted pair.
d. All of the above
e. None of the above
b. False
a. True
b. False
b. 14
c. 12
d. Any of the above
b. False
b. 802.11b
c. 802.11g
d. All of the above
e. None of the above
b. False
b. False
b. False
b. 2.4 GHz
c. 5 GHz
d. All of the above
e. None of the above
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What's Wrong with This?
Wally `Larman installed a home network wiring system that included a wireless router for one of his residential accounts. The system designed by the network company included 2 RG-6U and two Cat 6 cables from the head end to each location. Wally selected the HVAC room in the garage for the head end and properly ran the appropriate cables. He terminated each cable with the proper connector and tested each cable for opens and shorts, but when the network company arrived to set up the network, they were not pleased with his work. Can you see what Wally did wrong and what he must do to correct the problem?5-Minute Tech Quiz Answers
Here are the answers to What's Wrong with This? and the 5-Minute Tech Quiz that appears on Page 47.- b — Although almost all individual components use IR for remote control, you can use hand-held remote controls that are IR- or RF-based, depending on the application.
- d
- c — PLC or power line carrier systems utilize the existing traditional electrical cables for communication to the various modules installed.
- c — Lamp modules will respond to a dim command. Appliance modules will only respond to on/off commands. A bridge is used to allow signals to travel across electrical phases within the house.
- b
- a
- a — You should also exercise care not to distort the cable by excessive pulling, sharp bends or fasteners. It also is important to maintain the twisting of the pairs when making terminations.
- b — There is a limit of 100 meters when running LAN cables.
- d — The size (AWG) used depends upon the total length of the cable run. Larger cables (with lower AWG numbers) should be used for long runs to minimize voltage drops.
- a — Many satellite DVRs require two coaxial cables to simultaneously record two different channels.
- d
- b — Splitters cannot be used to add multiple TVs to a satellite TV system. You must use a multiswitch to connect additional TVs.
- b
- b — Home network cabling should be done in a star fashion, home running each cable to the head end.
- b — IEEE 802.11b and g operate in the 2.4 GHz band, while 802.11a uses the 5 GHz band.
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