This CCTV Buyers Guide provides a comprehensive overview of deploying a successful video surveillance camera system in your business or residence. This guide contains information to help in the design of your video surveillance system, select the products that best fit your CCTV system requirements, and help make key installation decisions that will save you time and money.The information was derived from deploying 100's of CCTV systems and gathered from CCTV call centers who answer questions from commercial and residential customers. This guide combines the data from past CTV projects and gives the reader a head-start in the successful CCTV project
There are many details to consider when specifying the correct CCTV Camera System. Professional Video Surveillance is not a cheap endeavor and a budget should be outlined and the best possible system should be considered. This guide will help the novice CCTV buyer in reviewing camera and recording system for their CCTV and Video surveillance requirements.

The first task in a successful CCTV project is to outline the key CCTV objectives.
o How many cameras are required?
o What are the key FoV (Field of View(s))?
o What are the recording requirements?
o What are the lighting conditions of each camera location?
o Where do I need live video monitoring or a second video monitor?
o How long do you need to retain the video files?

Cameras There are specific cameras that need to be selected based on the FoV, lighting conditions, and the mounting location of the camera. There is no such thing as a one-size fits all in the successful CCTV project. It is important to note each camera location and select the camera best suited for that location.
Answer these questions:
o Indoor or Outdoor?
o Lighting conditions (during day and night)?
o Mounting locations?

Indoor Dome Camera
The indoor dome camera is used in 90% of general indoor applications. It comes in a variety of configurations including standard color, Day/Night, and Infrared versions. It can be mounted on a horizontal or vertical surface but is typically ceiling mounted. Lens options on dome camera may restrict their use in certain applications such as requiring more than a 20mm video lens. Dome cameras are a primary choice in indoor camera locations.
Box Camera
A box camera is a standard camera that can be mounted alone or in an enclosure. The box camera uses a separate lens that screws on to the front surface and provides flexibility for different FoV requirements and is sold without a lens. An auto-iris lens will have a small cable that connects to the camera for iris control in various lighting conditions.
Outdoor Dome Cameras
Outdoor Dome Cameras are typically hard shell vandal-roof casings that offer the same versatility in a variety of lens options. Day/Night outdoor dome cameras are common in applications that have entry and exit points with limited lighting during the night.
Day/Night Camera
The Day/Night camera is the best choice for low-light conditions. The cameras are standard color during daylight conditions, the Day/Night camera switches either digitally of mechanically to a low-lux B/W mode.
Infrared Camera
During No-Light conditions, Infrared cameras provide infrared illumination of the FoF allowing monitoring of areas with no light available. Te IR LEDs are automatically illuminated and the camera switched to the B/W low-lux mode offering camera views in total darkness.
PTZ Camera
Pan-Tilt-Zoom camera offer the ability to view in all directions and optically zoom in as required. PTZ cameras also include standard color, Day/Night modes, and a few IR PTZ cameras have been introduced recently. The CCTV operator can set the PTZ cameras to automatically rotate to different FoVs. Options include Auto-tracking applications that dynamically track objects in defined areas.

Digital Video Recorders
DVRs are an important part of any successful CCTV project. Video resolution is getting larger, recording speeds are getting faster, and video data compression is reducing the video data file size. TeraByte storage capacity is becoming common in many CCTV applications. Network or remote monitoring of CCTV video is standard in all professional DVRs on the market in 2007 and video distribution across LANs, WANs, and the Web have given the DVR a new market outside of video security known as Business Systems Monitoring that allows management to monitor specified key business areas 24 hours a day. No longer just a security video recorder, the DVR has become a business tool for management with remote monitoring applications.
In order to choose the correct DVR for any application, the following questions need to be answered.
o How many channels (cameras)?
o What speed of recording is required?
o How long to retain video files (Hard Drive Size)?
o What features are important to the application?
o Where will DVR system be located?
o Remote monitoring requirements?

Source : www.AMAsecurity.com

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