How to Choose a HD-AHD Camera for Your Existing CCTV System
HD over coax technologies offer exceptional image quality and long-distance transmission capabilities. Their compatibility with existing analog systems makes them a cost-effective solution for upgrading your current surveillance system.
However, each technology has its strengths and weaknesses. In the low-light image test below, EX-SDI handles light exceptionally well compared to HD-CVI & HD-TVI.
Resolution
The resolution of an hd ahd camera is the number of pixels that are used to display an image. The higher the resolution, the better the image quality. The most common resolutions are 720p and 1080p.
These cameras can work in either AHD mode or CVBS mode and are compatible with most modern HD security DVRs. They also have built-in microphones and support Audio-Over-Coax. This technology enables the video and audio signals to be sent over the same cable, avoiding the need for separate cables for these functions. However, this feature requires a DVR that supports it.
Compared with traditional analog CCTV systems, HD-AHD technology offers high-definition surveillance. This is because it uses a megapixel CMOS sensor. This ensures that the images are clear and sharp. Additionally, it has advanced Y/C signal separation and simulation filtering technology. These features help to reduce color noise in the high-frequency area.
It also has a long-distance transmission capability of up to 500 meters. Moreover, the AHD camera can connect to a CRT display directly without losing image information. This technology is suitable for various industries, such as financial, supermarket, telecommunications, and government facilities. It can even be used in places where a large number of people visit. It has a wide range of applications and is compatible with traditional analog equipment.
Transmission Distance
AHD cameras are able to transmit hd ahd camera a full HD video signal over a coaxial cable for up to 500 meters. Depending on the quality of the cable, it may be possible to extend this distance even further by using video baluns. AHD can also transmit audio and control signals over a coaxial cable, which makes it ideal for upgrading existing CCTV systems.
The AHD technology uses a CMOS image sensor that converts light into electrons. This is more efficient than traditional CCD-based technology, resulting in a smaller camera footprint and lower power consumption. Additionally, the CMOS technology is built on a matured, widely-used transistor platform that reduces fabrication costs and improves noise immunity. These factors help to lower the cost of AHD, making it a viable alternative to more expensive IP cameras.
Another benefit of AHD is that it can be used with traditional CRT monitors and allows you to use the same BNC cables as your standard analog cameras. This is especially useful in commercial vehicle applications, where the cameras must be viewed from the driver’s seat. AHD cameras can also be accessed remotely on mobile devices, a feature not available with traditional analog cameras.
Power
Unlike HD-TVI and HD-CVI, AHD technology can transmit a high definition signal over traditional 75-3 coaxial cable at distances up to 500 meters. Its long transmission range allows users to install CCTV cameras in remote locations without the need for expensive rewiring. It also features advanced Y/C signal separation and simulation filtering technology, which improves image resolution and reduces color noise.
The AHD camera offers a variety of digital features and is able to operate on both 24VAC and 12VDC power sources. Its OSD menu allows users and installers to adjust a variety of image settings including focus, lens adjustment, IR LED activation, and more. It also has a smart noise reduction feature that eliminates graininess, making it ideal for black and white recording.
Compared to other analog surveillance technologies, AHD is the most cost-effective and has great compatibility with existing systems. The only drawback is that the camera requires an external recorder. Regardless, it is an excellent option for businesses that want Smart WiFi Camera to upgrade to HD surveillance without changing their current equipment. However, it is important to note that long wire runs will require additional power supplies. Be sure to use a voltage drop calculator to determine the proper cable size for your installation. Additionally, if your camera has a motorized zoom lens or built-in heaters, it will require more power than other models.
Compatibility
Before you make the final decision on an HD over coax solution, consider a few factors to ensure your system is compatible with other cameras and equipment. First, check your existing coax cable compatibility with the chosen technology (CVI, TVI, or AHD). You may need to upgrade or replace your cables to ensure optimal performance. Second, evaluate your power supply requirements to ensure that your current system can handle the increased power demands of your new HD over coax solutions. Finally, evaluate your storage capacity to ensure that you have enough space for recording high-definition video footage.
In addition to allowing for better image quality, HD over coax solutions can also provide advanced features that traditional analog systems cannot. For example, they can offer audio support and pan/tilt control. Some also offer megapixel resolutions up to 8 million pixels, enabling you to capture images with greater detail and clarity.
Analog HD (AHD, CVBS) and digital HD (CVI, TVI) over coax solutions are compatible with most analog security cameras. For a more comprehensive security solution, you can also pair an intelligent CCTV DVR recorder with the cameras to enhance their functionality and access to advanced features. To monitor your security cameras on a larger display, you can use HDMI converters to convert BNC outputs into an HDMI input.
