HD Clarity. Existing Cables. Zero Compromise on Security.

What is the difference between HD-TVI, HD-CVI, AHD, and CVBS analog camera standards?

These are four different analog video transmission standards that are not cross-compatible unless the DVR supports all four. HD-TVI (Hikvision, CP Plus) and HD-CVI (Dahua) are proprietary standards from major manufacturers. AHD is a more open standard used by many third-party brands. CVBS is legacy standard-definition analog (420–700TVL). A camera using HD-TVI standard will show a black screen on a DVR expecting AHD input. Modern 4-in-1 (or 5-in-1) cameras and DVRs support all standards simultaneously, eliminating compatibility risk – this is the recommended choice for all new installations.

Can I upgrade from CVBS cameras to HD analog cameras using existing coaxial cables?

Yes – this is the primary advantage of HD analog technology. Existing RG59 or RG6 coaxial cable can carry HD-TVI, HD-CVI, or AHD signals without replacement. A 2MP HD-TVI camera works on the same RG59 cable that previously carried a 420TVL CVBS camera – delivering 4x the resolution with zero rewiring cost. The only hardware requiring replacement is the camera and DVR (if the existing DVR does not support HD analog standards). This makes HD analog the most cost-effective upgrade path for the millions of Indian businesses with existing coaxial infrastructure.

What is the maximum cable distance for HD analog cameras?

Cable distance limits vary by standard and resolution. HD-TVI at 1080p: up to 500m on RG59 coaxial (longest range). HD-CVI at 1080p: up to 500m on RG59. AHD at 1080p: up to 300–400m on RG59. At 4K (8MP) resolution, all standards have shorter effective range – maximum 200m on RG59, 400m on RG6. For runs beyond these distances, a video amplifier (coaxial repeater) extends the signal by another 200–300m. By comparison, IP PoE cameras are limited to 100m on CAT6 – making HD analog the clear choice for long-perimeter or large-campus coaxial runs.

How do I check if an HD analog camera is genuine and not counterfeit?

Three verification steps: first, scan the QR code on the camera body or box through the brand's official app (CP Plus CamView, Hikvision iVMS-4200) – genuine cameras register successfully. Second, check the sensor specification on the product datasheet – genuine 2MP cameras list Sony IMX291 or ON Semiconductor AR0237 sensors; counterfeit cameras use no-brand sensors with no datasheet. Third, purchase from Trade4Asia-listed authorized distributors who provide brand dealer certificates – suppliers unable to provide dealer certificates are selling grey-market or counterfeit products.

What resolution HD analog camera should I choose for a shop or small office?

For a shop or small office with camera-to-subject distances of 3–8 metres (typical counter, entrance, and cash desk coverage), 2MP (1080p) HD analog cameras are fully adequate and the most cost-effective choice. At 8–15 metres distance (larger retail floor, warehouse aisle, or external parking), 4MP cameras provide the additional resolution needed for reliable face identification. 8MP (4K) cameras are only justified where a single wide-angle camera must cover distances beyond 15 metres while maintaining identification quality across the full field of view.