HD security cameras and HD video surveillance systems refer to newer generation high definition CCTV cameras and DVRs that use the same coax cable as traditional CCTV, but support 720p (1280 x 720) and / or 1080p (1920 x 1080) HD video resolutions.
If you purchased an analog CCTV camera system in the recent past, you may be feeling that you should have waited for HD cameras. Maybe you are now wondering if you can use some of the equipment from the original system purchased and upgrade to HD surveillance. Here are some points for you to consider and some good news for you.
If you used RG59 or RG6 coax cable to run the video from your CCTV cameras back to your DVR, there is good news when it comes to upgrading. You can use this same cable to run video from HD security cameras, including AHD, HD-SDI, and TVI HD camera types.
If you used pre-made CCTV camera cables, you may be able to re-use your cable with HD cameras. If the premade cables are RG59 gauge, then you can use them. If they are a thinner gauge cable, then you need to test to be sure. HD cameras generally require coax cable of RG59 gauge or greater.
If your existing surveillance system uses CAT-5 or another type of UTP cable supported by video baluns, you may be able to leverage that cable when upgrading to HD. Many existing CCTV systems use CAT-5 connected to video baluns in order to run video from cameras to a DVR. Some of the new HD technologies also support CAT-5 / UTP and video baluns. For example, these HD video baluns support AHD, HD-TVI, and HD-CVI cameras. Unfortunately, HD-SDI cameras do not support UTP cable with video baluns. You must use coax cable with SDI cameras.
Just like CCTV cameras, HD security cameras use either a 12V DC or 24VAC power supply. If you have an existing 12V DC power supply box, you should make sure that the HD cameras that you purchase are also 12V DC. Same goes for 24VAC. You should also confirm that the amperage required by the HD cameras is within the range supplied by your power supply box.
It depends. If your existing DVR is what is known as a hybrid, then yes. If you bought your DVR before 2014, it is unlikely that you have a hybrid. Hybrid DVRs support more than one video standard. For example, this surveillance DVR supports both analog CCTV cameras and HD cameras (AHD type – 720p and 1080p resolutions and 1080p TVI cameras supported). This allows owners to mix and match SD and HD cameras on the same DVR. It also provides a nice upgrade path so owners can use existing SD cameras and later add HD cameras to their system by replacing the SD cameras over time.
Unfortunately, if you have an existing CCTV DVR that is not a hybrid and you want to upgrade to HD, you have to replace your DVR.
Unlike DVRs, cameras are either HD or SD. There are no hybrid security cameras. If you want to upgrade from CCTV to HD surveillance, you must replace your cameras with HD security cameras. However, as mentioned above, if you have existing CCTV cameras that you want to continue to use and you want to add a few HD cameras to your system, you can use a hybrid DVR that supports both technologies