Basic network cabling for ELV equipment Flashcards
What are these network cables ?
Which regulatory body regulates the cabling industry ?
Cabling Provider Rules (CPRs)
Define Network boundary.
The point of connection between the carrier’s (e.g. Telstra, Optus, Vodafone etc.) network and the customer’s network.
Define customer cabling.
Any cabling on the customer side of the network boundary.
Define Cabling work.
Installation, connection or maintenance of customer cabling.
What is Australian Communications and Media Authority (ACMA) ?
ACMA is a government agency responsible for the regulation of broadcasting, the internet, radio-communications and telecommunications
List some of the responsibilities of ACMA.
- Developing technical standards and monitoring compliance.
- Help with codes of practice and monitoring compliance.
- Monitoring the performance of carriage service providers (e.g. Telstra, Vodafone etc.).
- Advising consumers on their rights and safeguards.
- Managing the delivery of services to people with a communication impairment.
- Overseeing the cabling registration system.
What are the three types of cabling registrations ?
Open Registration
Restricted Registration
Lift Registration
What is Open Registration ?
What is Restricted Registration ?
What is Lift Registration ?
List 5 Cabling endorsements
List 5 ACMA accredited cable registrars
Why must network cables be segregated from power cables and what is the minimum distance ?
To prevent the power cables from inducing voltage into the network cables.
Parallel runs must be minimized where possible.
Minimum distance = 50 mm
What do the labels on this figure 8 cable mean ?
What terminal is this ?
Spring Clip Terminals
What terminal is this ?
Binding Post Terminals
Name these label lugs
What tool is this ?
How do you test that no short exist btw 2 conductors ?
How do you test that 2 conductors are electrically continuous ?
Name the following types of structured cables.
What is cross talk ?
Its when signals being transmitted on one pair is received on another pair.
What do the 4 pairs represent in structured cables.
What are the 2 conventions for classifying the performance of structured cables ?
Categories of performance -
(e.g. Cat 1, Cat 2, Cat 3, Cat 4, Cat 5, etc.), which are based on the U.S. Standard (EIA/TIA 568).
Classes of performance -
(Class A, Class B, Class C, Class D, Class E, etc.) are based on the International and Australian Standards (ISO 11801 and AS/NZS 11801).
List the class, speed, bandwidth and construction of the following structure cable cat
Identify the cable markings on this structure cable.
What is the bending radius of structured cable when hauling ?
Four times the cable diameter
What should be used to support data cables ?
Velcro
Not nylon ties
What type of socket is used to connect structured cabling?
What are the 2 different wiring configurations for data sockets and patch cords ?
T568A - Australia use
T568B - USA, sometimes Australia
The vast majority of structured cable terminations are made at ?
Insulation Displacement Connection (IDC)
What is a patch panel ?
How should twisted cables be terminated at socket ?
What is a patch lead ?
A patch lead is a length of structured cable with a male RJ45 plug on each end.
List the 3 types of patch leads ?
What is this instrument ?
Wire Map Testers
Identify the various outcome of wire map testing.
List the parts of COAX cable.
Name the following cable hauling equipment.
How does impedance mismatch happen in COAX cables and what are some of the potential consequences?
Any change in the shape of a COAX cable can cause a change in the characteristic impedance at those points along the cable, resulting in an ‘impedance mismatch’. In turn, this results in signal distortion problems, such as ‘ghosting’ in old analogue systems and ‘pixilation’ in digital systems.
How does standing waves occur in cables and how to avoid it ?
List the type and application for the following COAX connectors
What does the following indicate ?
A reading of infinite ohms (i.e. an open circuit) indicates that there are no short circuits (S/C) between the shield and the inner conductor. Alternately, a low resistance reading indicates a short circuit.
What does the following indicate ?
A continuity reading (i.e. a short circuit) indicates that both the shield and the inner conductor are electrically continuous. A high resistance reading indicates a problem, for example a break in the inner conductor.
