Podcast
Questions and Answers
What is the maximum limit for propagation delay skew expressed in microseconds?
What is the maximum limit for propagation delay skew expressed in microseconds?
- 200ns
- 500ns
- 50ns (correct)
- 100ns
What is the primary cause of delay skew in twisted-pair cables?
What is the primary cause of delay skew in twisted-pair cables?
- Alien crosstalk
- DC Resistance Unbalance
- Propagation delay
- Twists per foot (lay lengths) (correct)
Which measurements are required for compliance of Category 6A systems, as identified by ANSI/TIA-568-C.2 and ANSI/TIA-1152?
Which measurements are required for compliance of Category 6A systems, as identified by ANSI/TIA-568-C.2 and ANSI/TIA-1152?
- Power sum crosstalk and Delay skew
- Propagation delay skew and DC Resistance Unbalance
- PS ANEXT and PS AACR-F (correct)
- Alien crosstalk and DC Resistance Unbalance
What is the requirement for power sum crosstalk from the adjacent cable in comparison to the PSNEXT requirement of the single cable?
What is the requirement for power sum crosstalk from the adjacent cable in comparison to the PSNEXT requirement of the single cable?
What must the DC parallel resistance between pairs not exceed to fully support IEEE 802.3bt (PoE++)?
What must the DC parallel resistance between pairs not exceed to fully support IEEE 802.3bt (PoE++)?
What is alien crosstalk?
What is alien crosstalk?
What happens if delay skew is significant in a cable bundle?
What happens if delay skew is significant in a cable bundle?
What does ANEXT stand for in the context of crosstalk?
What does ANEXT stand for in the context of crosstalk?
What is the purpose of identifying cables as Disturbers and Disturbed (Victim) in the context of ANEXT loss?
What is the purpose of identifying cables as Disturbers and Disturbed (Victim) in the context of ANEXT loss?
What is the requirement for the DC parallel resistance between pairs to fully support IEEE 802.3bt (PoE++)?
What is the requirement for the DC parallel resistance between pairs to fully support IEEE 802.3bt (PoE++)?
What does IEEE Std 802.3-2012 specify as the maximum DC resistance unbalance between conductors?
What does IEEE Std 802.3-2012 specify as the maximum DC resistance unbalance between conductors?
What is the formula for calculating the DC resistance unbalance within a pair?
What is the formula for calculating the DC resistance unbalance within a pair?
What is the DC resistance unbalance within a pair if $R_1 = 1.87 , \Omega$ and $R_2 = 1.85 , \Omega$?
What is the DC resistance unbalance within a pair if $R_1 = 1.87 , \Omega$ and $R_2 = 1.85 , \Omega$?
What is the sum of the individual resistances of two conductors known as?
What is the sum of the individual resistances of two conductors known as?
What problem can resistance unbalance in a cabling channel cause?
What problem can resistance unbalance in a cabling channel cause?
What is the maximum DC resistance unbalance between pairs as per the example?
What is the maximum DC resistance unbalance between pairs as per the example?
What is the first step to calculate the parallel resistance of pair 1,2-3,6?
What is the first step to calculate the parallel resistance of pair 1,2-3,6?
What is the difference in DC resistance between two conductors if $R_1 = 2.5 , \Omega$ and $R_2 = 2.2 , \Omega$?
What is the difference in DC resistance between two conductors if $R_1 = 2.5 , \Omega$ and $R_2 = 2.2 , \Omega$?
What is the total DC loop resistance if $R_1 = 3.2 , \Omega$ and $R_2 = 2.8 , \Omega$?
What is the total DC loop resistance if $R_1 = 3.2 , \Omega$ and $R_2 = 2.8 , \Omega$?
What could resistance unbalance result in, affecting Power over Ethernet (PoE) delivery?
What could resistance unbalance result in, affecting Power over Ethernet (PoE) delivery?
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