Sence of Security
AHD CCTV System
AHD CCTV is an analog high definition closed-circuit television video surveillance standard that uses coax cable to transmit HD video from security cameras to DVRs. AHD supports 720p and 1080p HD video resolutions.
1080P Resolution for Indoor & Outdoor AHD CCTV
What type of cable do AHD cameras use?
AHD CCTV cameras are connected to DVRs using the same type of coaxial cable as traditional analog CCTV cameras, typically RG59 or RG6 coax cable. One of the advantages of AHD over HD-SDI cameras (another HD over coax security camera standard), is that RG59 coax cable can be run long distances without video loss.
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Internet Protocol CCTV SYSTEM
Thinking about making the switch to IP cameras? Here’s what to consider.
Ease of installation: Whereas an analog camera takes two wires, an IP camera only takes one for both data and power that connects to a network switch, so you don’t need power at the camera site.
Resolution: IP cameras have superior image quality to that of analogs. You can get cameras with different resolutions and aspect ratios customized to your needs.
Intelligence and analytics: IP cameras are basically small computers that compress and store video, plus they can be programmed to provide all sorts of analytics. They can detect motion or smoke, count people, track certain colors, sense when something disappears, and set off alarms. “You can draw a trip line where if something crosses that line, it sends a signal.
IP CCTV System
Cat 5 or Cat 6 security cameras are commonly known as PoE IP cameras (power over Ethernet cameras), or Ethernet security cameras, which only need single Ethernet network cable (Cat 5 or Cat 6 cable) to transmit data and power to cameras/systems.
Cat 5/Cat 6 PoE cameras are first plugged into a PoE switch/PoE injector or network video recorder (NVR) with PoE ports and a network router, and then the security camera will be up and running. PoE cameras/systems are the plug-and-play type with minimal wiring hassles as it can transmit data and power with ONE single Ethernet cable, eliminating tangled cords and simplifying wiring around the house. To get a better idea, the Ethernet IP security camera wiring diagram is shown below :