Blue Book Chapter 3 Questions Flashcards Preview

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Flashcards in Blue Book Chapter 3 Questions Deck (25):
1

What type of camera is more sensitive in low light conditions: color or black and white? Why?

Back and white because it produces images in lower light.

2

How do day/night cameras work?

Produces image in color under favorable lighting conditions and switches over to black and white when lighting gets too low for color.

3

What is the unit of measure for light sensitivity?

LUX

4

Define the following common camera feature terms?
a. ALC
b. AGC
c. BLC

a. ALC - controls auto iris lenses
b. AGC - increases sensitivity of image in lower light situations
c. BLC - adjusts bright light by darkening

5

What is the most common voltage for full body camera?

24 VAC

6

What are the seven common camera types?

full body, bullet, dome, board, vandal resistant, covert, outdoor

7

How do you eliminate lighting bloom?

reposition camera, tinting it

8

What is the purpose of the camera lens?

To focus the camera

9

What is the difference between General Coverage and Detail Coverage?

General: wider view
Detail: narrower view

10

List the three common sizes and distance limitations for coax cable.

Rg 59, Rg 6, Rg 11

11

What connector is the industry standard for CCTV coax?

BNC

12

What are the four types oof BNC connectors?

twist on, two-piece crimp, three-piece crimp, compression

13

How many splices are allowed in a run of coaxial video surveillance cabling?

five

14

List some common cources of MIE

Flourescent lights, motors, antennas

15

When selecting a transformer, ensure it has sufficient ____ to power all devices.

coattage

16

The five factors that determine the amount of recording time you will get out of your DVR/NVR are:

image record rate, picture size, image quality, scene activity, storage space

17

What is the purpose of camera housing/domes?

protection from the elements, tampering and damage

18

What is an advantage of using a tinted dome?

more covert

19

What is a disadvantage of using a tinted dome

1 f-stop (flux), light loss,

20

What are two main methods for controlling PTX cameras?

tilt, zoom

21

List three alternate methods of video transmission.

hardware controls, digital controls, coax control

22

What are the distant imitations for passive baluns?

1000'

23

When is it safe to look down a fiber optic cable?

NEVER

24

What is the purpose of surge protection?

It provides protection from spikes that come over power, video, and data connections.

25

What are the advantages of using fiber optic cabling?

Immune to EMI and Rf and more secure