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Spectrum Field Tech Exam Questions with Accurate Answers 2023
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Spectrum Field Tech Exam Questions with Accurate Answers 2023
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Spectrum Field Tech Exam Questionswith Accurate Answers 2023
Current/ amperage - -Flow or movement of electric charges
-Resistor - -a passive two-terminal material that impedes the flow of current
-What is the most common workplace hazard involving electricity? - -
Electrical shocks
-What is minimum approach distance? - -The shortest safe distance to keep
from energized conductors
-CATV at the pole - -40''
-CATV at the mid-span - -24''
-CATV at the house - -12''
-Live parts of electric equipment must be guarded against at how many
volts? - -50 volts
-What are the 2 kinds of grounds required by Safety standards for electrical
systems? - -Service and Equipment
-What are circuit protection devices designed to do? - -Automatically limit or
shift off the flow of electricity in the event of a ground fault, overload, or
short circuit in the wiring system
-OSHA - -Occupational Safety and Health Administration
-CATV - -Community Antenna Television
-HFC - -Hybrid Fiber Coax
-What are the four sources of signals? - -Satellite, local origination, off air,
fiber optics
-Forward - -54 MHz-1 GHz
-G.B. - -Guard Band
-Return - -5-42 MHz
, -Downstream (forward path) - -Forward signal from the headend to a
customer
-Upstream (reverse path) - -Return signal from a customer to the headend
-Signal frequency - -Number of times that an RF signal completes a cycle
from a positive value to a negative value and back in one second
-Ultrasonic frequencies are higher than what? - -Audio
-Infrasonic frequencies are below what? - -Audio
-How many hertz can the human ear hear? - -20-20,000
-Per NTSC requirements, what is a tv channels bandwidth? - -6MHz
-FCC (Federal Communications Commission) - -Gov agency responsible or
regulating and assigning frequencies throughout the US
-HFC distributes what? - -Broadband signals through a network of various
elements
-Nodes - -Convert the light signals from the headend into radio frequency
signals for delivery to customer
-Ingress signal leakage TV: - -Lines in picture, ghosting, pay per view
problems, scrambling problems
-Ingress signal leakage Internet: - -Lack of internet access, lack of internet
access, lack of email services, data problems
-Ingress signal leakage Voice - -Telephone call failures (incoming and out
coming)
-QAM (quadrature amplitude modulation) - -Is both an analog and digital
modulation scheme used for transmitting digital data as an analog signal by
using a carrier split into 2 carriers of identical frequency phase shifted 90
degrees apart
-How many programming channels can digital signals have within a 6 MHz
space? - -12
-CLI - -Cumulative Leakage Index
-What are charters technical standard for 256 QAM and OFDM carries at
CPE? - -34 dB or better
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