Cabling Flashcards

1
Q

Balun

A

A balanced to unbalanced circuit coupling device used to convert from unbalanced to Balance transmission provides impedance matching when connecting twisted-pair to coaxial cables

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2
Q

Grade 2 residential cable requirements

A

2 cat 5E and 2 coaxial cable’s

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3
Q

Attenuation

A

Signal loss decrease in magnitude of transmission signal strength between points.similar to voltage drop

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4
Q

Pair to pair couple

A

Transfer of unwanted energy from one circuit or pair to another

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5
Q

Power sum next

A

Undesired coupling of signal energy from a number of simultaneously transmitting pairs into a receiving pair

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6
Q

Class one administration

A

Number of TR’s and no backbone cabling or outside plant cabling system

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7
Q

ADO

A

Provides meals for a tenant to disconnect from access provider

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8
Q

Equipment room

A

Centralize space for telecommunications equipment that serves occupants of the building sometimes two rooms one voice and one data usually where utility comes into a building

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9
Q

Residential cable requirements

A

Grade 1 Dash minimum requirements for telecom services , Telephone, satellite cat tv and data services

Grade 2 – provides a generic cabling system that meets the requirements for basic advanced and multimedia telecommunication services

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10
Q

CMP

A

Plenum cable

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11
Q

CMX

A

Residential cable

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12
Q

CG

A

General purpose

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13
Q

CMR

A

Riser cable

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14
Q

Work area

A

A building space where the occupants interact with telecommunications terminal equipment

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15
Q

Application dependent design

A

Specific cable type and connectors for a design

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16
Q

Structured cabling system

A

Horizontal cabling, backbone cabling, Work area, telecom rooms, equipment rooms, entrance facility, administration

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17
Q

Cross talk and how different jacks are better for increasing performance

A

T568A and T568B not USOC

18
Q

Equipment room admin color

19
Q

Wire map test

A

Basic test for test circuits for open or short-circuits cross pairs reversed wires and split pairs

20
Q

GE

A

Grounding equalizer – large multi story buildings, interconnects elements of telecommunications grounding infrastructure

21
Q

TBB

A

Telecommunication bonding backbone – interconnects all TGBS with TMGBS

22
Q

TGB

A

Telecom grounding Busbar

23
Q

TMGB

A

Telecom main grounding bus bar

24
Q

Horizontal cabling

A

Max 295 feet, 90 meters-portion of telecom cabling system that extends from work area telecom outlet to the horizontal cross connect in telecom room

Includes horizontal cables telecom out works in work areas mechanical terminations and patch cords or jumpers located in TR

25
Cat 5E
100 MHz, 110 ohms twisted pair cable
26
Coax Cable
Conductor, plastic jacket, wire mesh,outer jacket
27
Patch cord maximum length
16 feet
28
Permanent link test
Test configuration used by data telecommunication systems designs in users to verify performance of permanently installed cable
29
Channel test
Test configuration use by data telecommunications systems designer and user to verify performance of overall channel
30
What does twisting pairs do to the performance of the cable
Reduces crosstalk capacitive coupling
31
While the pipe fill
Three or more – 40%
32
NECs main concern with fire and structured cabling
Flammability of cable
33
Bend radius on UTP cables
4x the diameter
34
Support distance on cabling
5 feet
35
Labeling requirements
12 inches back from the end of the cable and generated from mechanical device
36
110 block
Better application at high frequencies, 110 blocks can accommodate six cables in a row
37
Coax connectors
Type F – frequently used Type BNC – security applications (Data applications) Type N-not as common
38
Bit rate
Transmission of binary signal measured in bits per second
39
AT&T bonding clamp
Used for grounding
40
Overvoltage protection
Accomplished using – carbon block airgap, gas tube, solid-state Protector units Gas tube is preferred over carbon block airgap because they become pitted and create carbon buildup and dust
41
Elements of administration
Class 1–1 telecom room same building Glass two – more than one telecom room same building Class III – multiple buildings the same campus Glass for – multiple sites same network