OBSERVER MONITOR INSTALATION

INSTALLATION AUDIO VIDEO CCTV SYSTEMBy Sarbini, S.Pd (SMK Muh 3 Yogyakarta)

Monitor criteria can be grouped in two category :

Electronic factors

Human interface factors

ELEKTRONIC MONITOR FAKTORS

Electronic monitor factors :

Reliable strong, Resilience is a primary

consideration.

Monitor specifications

Life time (The minimum life time for CCTV monitor is 43,000 hours))

Mean Time Between Failure (MTBF)

Monitor Resolution (300 to 1200 lines)

Lately characteristics CCTV monitor electronic signals using the composite video cable exceeds the balance (75 ohm)

Video composite video means all elements (images, color, brightness) are sent in a stream does not like a video component that sends each element separately

MONITOR AND MAN INTERFACE FACTOR

Physical factors associated with the ergonomic knowledge to learn the size and optimizing the interaction with the human machines and equipment (peace securyti Book 4)

There are 3 parameters that affect the ability of the service related to efficiently monitor :

Screen size :

image that will be demonstrated

Format screen will be demonstrated

Distance operator to monitor (monitor size (in inch) - 4 = visibility optimum + / - 25% (feet)

Example, 9 inch monitor recommended observation distance is 5 feet (9-4). The visibility of 25%, so the distance can be observed in the range of 3.75 ft. to 6.35 ft

Perspective :

Monitor can be placed in the observation angle 30 degrees (left or right, up or down) from the operator perspective (specified at the time of the operator to sit comfortably and look straight to the head)

Maximum capability for the operator can feel the movement on the observation monitor 40 mins continuously

COMPARE OF DISTANCE AND MONITOR LENGTH

ADVANTAGEAND DISADVANTAGE CRT

NuMBER ADVANTAGE DISADVANTAGE

1 The best image quality High power consumption

2 Perfect technology High heat generation

3 Many tools have been designed for reproduction on CRT

Require a large space

4 Cheap Producting most of the monitor

ADVANTAGEAND DISADVANTAGE LCD

NuMBER ADVANTAGE DISADVANTAGE

1 Concise and lightweight Reproduction movement is weak

2 Power consumption Surveillance over the limited

3There are wide range of screen sizes

Konstrast low image

4 Cheap

ADVANTAGEAND DISADVANTAGE

PLASMA

NuMBE

R

ADVANTAGE DISADVANTAGE

1 Designed thin walls can be installed in

Easily broken

2 Maximum size is greater than on the LCD

High power consumption

3 Angle of vision is wider than on the LCD

High Heat generation

4 - Expensive