Chp 19 - Principles Of Fiber-Optic Transmissions

Question 0

What converts an electrical signal into light energy to be carried through the optical fiber?

Answer 0

Transmitter

Question 1

Fiber-optic link consists of what four basic components?

Answer 1

Transmitter, receiver, optical fiber, connectors

Question 2

What collects light energy and converted into electrical energy?

Answer 2

Receiver

Question 3

What carries your signal from transmit to receive?

Answer 3

Optical Fiber

Question 4

What allows connections between transmitter and receiver to optical fibers?

Answer 4

Connectors

Question 5

Explain Analog Transmission

Answer 5

Varies continuously through time in response to input

Question 6

Explain Digital Data Transmission

Answer 6

Information represented as a series of on-off or high-low readings.

Question 7

What is a binary digit?

Answer 7

bit

Question 8

How many bits are in a byte?

Answer 8

eight

Question 9

Stray voltage causes noise.

Analog or Digital?

Answer 9

Analog

Question 10

Noise is reduced or eliminated since stray voltages are not read.
Analog or Digital?

Answer 10

Digital

Question 11

Define Sample Rate

Answer 11

how often signal is measured over time.

Question 12

Define Quantizing Error

Answer 12

Inaccuracies in analog to digital conversion caused by the inability of a digital value to match an analog value precisely.

Question 13

Define Pulse Code Modulation:

Answer 13

Common method of converting analog to digital

Question 14

Nyquist Minimum explain

Answer 14

Must be sampled at least twice the highest expected frequency

Question 15

Define Multiplexing

Answer 15

Process of carrying multiple signals over one transmission media.

Question 16

What is db (Decibels) used for ?

Answer 16

Used to measure gain/loss of energy

Question 17

What is used to measure absolute power?

Answer 17

dBm

Question 18

1mW = what db?

Answer 18

0 dBm