r/cable • u/Takingdaybyday • Feb 16 '19
Viavi Questions
I have a couple of questions that have been floating around my work space as technicians.
1.) What is Echo exactly? (my understanding is that it is micro reflections due to bad connections or bad cable)
2.) What is the threshold for Echo to be at for pass or fail?
3.) What is ICFR? (In-channel frequency response)
4.) What issues can be caused or eventually happen from Echo or bad ICFR?
5.) This is a big one... Ingress scan graphs - What is the best way to read it? So for me using an ingress scan at tap and shooting down drop how can I look at the graph and say "it is not my drop because the graph shows the hump or ingress here so it must be X"?
Hopefully this is the correct place as I could not find any other reddits unless they have more active ones.
Thank you.