07. Points to consider when designing a CCTV System

A. Purpose of the CCTV System

B. Budget

C. Cameras

D. Power

Availability during required times of operation
Position in respect to camera position
Localize or centralize power to cameras i.e. power each camera individually or altogether from centralised place such as control room
Size of PSU is relevant to the number of cameras to be used off it
12VDC or 220VAC operated equipment (i.e mobile applications)
Use of UPS?

E. Transmission of Video Signal

Via cable, i.e RG59U, Power-Ax, Twisted-Pair, Fiber-Optic or Wireless
Distance of signal transmission
Obstacles i.e sharp bends, high voltage equipment, roads/boundaries, different buildings
Protection of cabling against environment

F. Lighting

Amount of lighting during day & night
Direction of sun's position during day
Avoid placing cameras directly into sunlight
Constant or variable lighting conditions
Use of Infra-Red Illuminators/Cameras
Additional lighting needed?
Type of light source i.e flourescent, sodium, incandescent,
tungsten, sunlight, moonlight, starlight, halogen, mercury vapour etc.

G. Environment

H. Monitoring and Recording Location

A central location to cut down on long cable runs
Sufficient clean power available with 24 hour operation
Safely secured in event of robbery or tampering by internal staff
Sufficient physical space available for equipment and the maintenance thereof
Use of recessed or reflective lighting with dimming control to prevent monitor glare
Monitor/s should be placed directly in line-of-sight of the operator in the seated position (no less than 1,5m away)
No more than 5 monitors per operator
Requirement for additional remote monitors in a seperate area?

I. Unmanned or Manned CCTV Site

J. Digital or Analog Recording

L. Communication Infrastructure and Bandwidth

M. Any Existing CCTV