Spectrum Field Technician 1 Test correctly answered already passed 2023
44 views 2 purchases
Course
Field tech
Institution
Field Tech
Spectrum Field Technician 1 Test correctly answered already passed 2023Decibel (dB) - correct answer Relative # of signal gain or loss through a device or cable.
Decibel millivolt (dBmV) - correct answer Absolute # of signal strength.
Foreign voltage detector (FVD) - correct answer Detects un...
Spectrum Field Technician 1 Test correctly answered already passed 2023
Decibel (dB) - correct answer Relative # of signal gain or loss through a device or cable.
Decibel millivolt (dBmV) - correct answer Absolute # of signal strength.
Foreign voltage detector (FVD) - correct answer Detects unwanted voltage on cables/strands; test on plastics too.
Data Over Cable Service Interface Specification (DOCSIS) - correct answer The international standard for adding high-bandwidth data to an existing cable system.
What does SAFE stand for? - correct answer Stop. Assess. Focus. Eliminate.
What does NCP stand for? - correct answer Next. Channel. Pointer.
What does SLM stand for? - correct answer Signal. Level. Meter.
What is a signal level meter? - correct answer Tool used to run multiple tests involving signal level, MER, BER and noise level.
What does CNR stand for? - correct answer Carrier to Noise Ratio.
What is the purpose of CNR? - correct answer Comparing level of desired signal to level of background noise.
What is Hum modulation? - correct answer The distortion of both cable video and audio. How can you identify video hum? - correct answer Visually seeing single (60Hz) or double (120Hz) horizontal bars rolling slowly up from bottom to top of television.
How can you identify audio hum? - correct answer By physically hearing a buzzing sound.
what does BER stand for and what does it do? - correct answer Bit. Error. Ratio. Overall measure of data quality of the received bit stream.
Consequences of BER (2 things). - correct answer 1.) Video: picture fails
2.) Data: loss of dial tone
What is the max length of a ground wire? - correct answer 20 feet (want the wire as short as possible).
What causes high BER (3 things)? - correct answer 1.) Ingress: poor connections 2.) Distortion: undesired change in electrical signal 3.) Noise: unwanted disturbance to a desired signal
What is the desired BER level? - correct answer 1.0E-9
What does MER stand for? - correct answer Modulation. Error. Ratio.
How many channels can go into a QAM? - correct answer 8-12.
What do QPSK, 16QAM, 64QAM and 256 QAM have in common? - correct answer They are phase shifted
90 degrees apart.
What is Egress? - correct answer Crap coming out of our system.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller kirus27. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $18.49. You're not tied to anything after your purchase.
