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Accessories of CCTV by vikas Gupta

CCTV stands for Closed Circuit Television, which refers to a surveillance system using cameras that send their signals back to a specific location. These video images can be monitored live, or stored for viewing later. CCTV systems are most often used to monitor stores, banks, and public buildings, etc. However, with the technology becoming more and more affordable, and easier to use, many people are actually installing CCTV cameras in their homes and businesses for added security. In larger stores, the CCTV cameras are often less visible. They can have high-Resolution Digital cameras that may be mounted in smoke detectors, sprinkler heads, thermostats or clocks. It is also very popular to mount these cameras in ceiling tile domes (they are bubble-like and tinted so no one can see where the camera is pointed). From this vantage point, a pan/tilt/zoom camera can swing about and follow someone around the store. There are many accessories in using CCTV -

Camera Lenses:CS and C Mount, Fixed and Varifocal, Manual and Auto Iris, 2.9 - 8 mm, 5 - 50 mm, 4 mm, 6 mm. 8 mm, 12 mm, and 16 mm, Pinhole Lenses & Manual Zoom Lenses available.

Mounting Brackets: Universal mounts for all CCTV cameras. PanaVise 6" dual option mounts, Heavy Duty plastic mount, and mini metal mount

Industrial-grade Camera Housings: Attractive & compact Ganz's housings for indoor or outdoor camera installation. Unique slide-off feature allows full accessibility to the camera and lens. Wide variety of options.

IR LED Illuminators:IR lights up to 15ft, 45ft, 70ft, 100ft, 160ft & 310ft in total darkness, 850nm, Invisible rays to human eyes, Compatible to true day/night & B/W CCD cameras.

Power, Cable & Baluns-

Power Supply: Multiple power supply for 24VAC & 12VDC (4, 8, 16 fused outputs) and individual power supply for 24VAC (20VA, 40VA) & 12VDC (500mA, 1000mA). UL Listed.

PoE (Power Over Ethernet): For IP (Megapixel Cameras) cameras with PoE compliance or PoE Splitter. IEEE 802.3af standard. 8 port, 24 port and 48 port models available.

Pre-assembled Cable Kits: Plug & Play Kits. BNC connectors on both ends of RG-59/U Shielded Coax Cable or Siamese Cable Kit for 24VAC Camera System. RCA/DC connectors on both ends of twisted pair copper wire for 12VDC Cameras.

Bulk Cables: Bulk in box dispenser or Spool; RG-59 coax, 18AWG, 22AWG, Siamese for video & power, Data cable for PTZ control; Belden cables.

Video Baluns: Passive Video Transceiver & Active Video Receiver for video signal transmission over 1000ft & 2000ft Cat5 cables. Clear video signals, lower cost, fewer cables to manage.

For Control Site -

Quad splitters: To display 4 pictures on one monitor at the same time. Switching function included. Color or B/W models. PIP mode display.
16 Ch. HD Multiplexer: HD resolution 1920 x 1080. Real-time display for up to 16 analog videos. PS2 PC mouse port and virtual keyboard. RS-485/422, RJ-45 Network connection for Developers.

Tools & Connectors: Tools & video connectors for coaxial cable installation. Wire cutter, coax stripper, coax tester, twist-on Bnc Connector, BNC/RCA adapter.

Multifunctional CCTV Tester: Rapport III
All-in-one portable tester for CCTV installers and professionals. Performs Video LCD Monitor, Video Signal Generator, Digital Multi-meter, PTZ Controller, PTZ Analyzer, and UTP Cable Tester.

Coaxial cable is the most commonly used form of transmission media in CCTV. It is also known as unbalanced transmission. After an image has been captured by the camera, it is then converted into an electrical signal and needs to be transmitted to a monitor, switcher, or video recorder. In order for the image to travel from the camera to the other device, it needs to go through some kind of transmission media.

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Article Source: http://www.earticlesonline.com/Article/-Accessories-of-CCTV/1291990

Tags: auto iris varifocal lens, camera, iris varifocal lens, lentille, objectif, surveillance, video

This entry was posted on Friday, September 15th, 2006 at 4:14 pm and is filed under Surveillance. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.