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Flashcards in Chapter 19 Deck (17)
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1
Q

what is an optical time domain relectometer5 (OTDR) used for?

A

it tests fiber optic cables by sending a series of optical pulses and then measures the light. p. 697

2
Q

what information do OTDR’s give us?

A

The fibers length
attenuation
location faults/breaks p. 697

3
Q

What does a multimeter do?

A

It can measure voltage, current, and resitance. They are used to troubleshoot in a variety of devices. p. 698

4
Q

what are some devices a multimeter may be used on.

A

Batteries, motor controls, appliances, power supplies and wiring systems. p. 698

5
Q

True or false: a toner probe is also called a generator.

A

True

6
Q

What is a toner probe used for?

A

Used to trace a wire down a wall.You can locate a specific connection in a punch down block. p. 698

7
Q

true or false: using a toner probe, testing the continuity of wires using alligator clips you can use a toner genreator and probe. An open wire wont produce a tone at the other end.

A

True p. 699

8
Q

true or false: using a toner probe, testing the continuity of wires using alligator clips you can use a toner genreator and probe a short will produce a tone on two or more wires at the other5 end.

A

True

9
Q

true or false: using a toner probe, testing the continuity of wires using alligator clips you can use a toner genreator and probe an improperly connected wire will produce a tone ont her wrong pin at the other end.

A

True p. 699

10
Q

what is a butt set?

A

A portable telephone that alows you to test analog wet or dry lines and is used to moinitor those lines. p. 700

11
Q

What is a punch down tool used for?

A

In twisted pair cable teh cable is usually terminated using a punch down tool. It punches down the wire into an insulation displacement connector. p. 701

12
Q

what is a wire crimper used for?

A

attaching ends onto cables. p. 702

13
Q

what does the voltage event recorder measure?

A

it can troubleshoot and provide prevenative maintenance in electrical systems. p. 703

14
Q

what do surge protectors do?

A

It monitors the voltage level and trips a crcuit breaker whent he voltage level reaches a certain level. p. 703

15
Q

what are some things you use a voltage event recorder for?

A

Recordign voltage
measureing distortion
Measuring flicker
Capturing voltage transients p. 703

16
Q

define flicker.

A

switching loads on lighting systems. p. 703

17
Q

what do environmental monitors measure?

A

temperature
humidity
power
air flow p. 703