Term
| The purpose of divide and conquer is: |
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Definition
| To lessen the amount of time required to solve an outage by cutting the problem in half |
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Term
| The two devices that are used the most are: |
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Definition
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Term
| The VOM meter is also used: |
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Definition
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Term
| The purpose of the TDR is: |
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Definition
| Locate the distance of opens, shorts, bad or unknown splices |
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Term
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Definition
| Pulse of energy sent through the cable to capture reflections back |
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Term
| A terminated span with TDR will: |
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Definition
| The energy will be absorbed and there will be no relflections back |
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Term
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Definition
| Found at the begining of the cable caused by time lag needed for the pulse width to launch |
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Term
| Cable locator is made up of: |
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Definition
| Transmitter, receiver, test leads and inductive clamp |
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Term
| The purpose of a shunt is: |
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Definition
| A low resistance point between two points in an electrical circuit |
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Term
| The problem with bucking power is: |
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Definition
| Sending A/C voltage from 2 different power supplies causing a large spark |
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Term
| An (RMS) root mean square meter: |
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Definition
| Accurately measures the voltages of signals other than pure analog |
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Term
| Steps in troubleshooting an LE are: |
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Definition
| Voltage test, look at the physical characteristics, check RF and check for leakage |
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Term
| Before you open an active device: |
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Definition
| Are there port and dust covers, missing lid bolts, splicing connectors, shrink condition, pole and strand hardware condition |
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Term
| After opening the active: |
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Definition
| Look at the appearence of moisture in the housing, condition of RFI mesh, rubber gaskets and wiring harness |
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Term
| Once visual inspection is done: |
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Definition
| Measure at test points, identify channels to measure, confirm design specs, and make sure readings are acceptable |
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Term
| The purpose of the power pack is: |
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Definition
| Amplifier component that converts the A/C to 24-28 VDC to operate the amp |
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Term
| The purpose of the bridger amp is: |
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Definition
| Used to add to the strength of the signals in order to compensate for the higher loss of the feeder |
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Term
| The purpose of the network amplifier (trunk amp)is: |
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Definition
| Used to transport signals over longer distances, not usally used to feed customers |
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Term
| Due to the lower frequencies on return: |
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Definition
| The 5-42MHz has far less attenuation than the forward |
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Term
| Due to the lower frequencies of the return path: |
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Definition
| Impairments have a greater effect such as CPD, impulse noise and ingress |
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Term
| The funneling effect is the result of: |
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Definition
| Cumulative return path distortions added to the signal at various locations of the network |
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Term
| RF carriers passing through a non-linear junction create CPD: |
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Definition
| The corrosion at this point acts as a diode creating beats in both the forward and return |
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Term
| The cause of impulse noise is: |
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Definition
| Arcing of electrical motors like a welder or house hold appliances |
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Term
| No repair can be make in a trench unless: |
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Definition
| All sides are shored up to prevent cave-in deeper than 4ft |
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Term
| The 2 types of TDR's are: |
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Definition
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Term
| The majority of the system problems are related to what: |
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Definition
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Term
| The VOM is used to measure: |
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Definition
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Term
| Information that is entered into the TDR is: |
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Definition
| Velocity of propagation and the impedance |
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Term
| What is velocity of propagation: |
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Definition
| The speed of an electrical signal on a cable as it relates to the speed of light in a vacuum |
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Term
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Definition
| The resistance of a circuit to alternating current |
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Term
| A device used to connect to different sizes of hardline cable is: |
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Definition
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Term
| An adapter used to connect hardline to drop cable is: |
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Definition
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Term
| An adapter used to splice hardline cable of the same size is: |
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Definition
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Term
| A short pulse width will have a dead zone of: |
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Definition
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Term
| A long pulse width will have a dead zone of: |
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Definition
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Term
| A complete open has what type of polarity and shows as: |
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Definition
| Same polarity and points upwards |
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Term
| A complete short has what type of polarity and shows as: |
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Definition
| Opposite polarity and points downward |
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Term
| The cable locator places a signal on what part of the cable: |
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Definition
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Term
| Any device that requires A.C to operate is called: |
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Definition
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Term
| Any device that does not require A.C to operate is called: |
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Definition
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Term
| What is the amplifier component that converts 60-90 VAC to 24-28 VDC: |
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Definition
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Term
| When balancing the return path: |
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Definition
| The output levels are changed with pads and eq's to compensate for losses that will occur in the cable and components that follow the amp |
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Term
| Some of the greatest impairments to the return path to the return path are: |
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Definition
| CPD, impulse noise, ingress and funneling effect |
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Term
| CPD affects the forward path by: |
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Definition
| Falling on the video carrier and contributing to the overall distortions |
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