For a CP Plus DVR, a CP Plus camera will work best when set to
CVI mode, as CP Plus uses HDCVI technology, which was developed by its parent company Dahua. However, the latest CP Plus DVRs are "universal" and support multiple technologies, so a camera can be configured to use TVI instead.
CVI is the native format for CP Plus
- Optimal Performance: As CP Plus's native technology, CVI (Composite Video Interface) cameras are designed to integrate seamlessly with CP Plus DVRs for the most reliable performance, with features like remote OSD control over the coaxial cable.
- Proprietary Standard: HDCVI is a licensed, proprietary technology, which ensures standardization and consistent quality across all CP Plus products that use it.
- Origin: CVI was developed by Dahua, the parent company of CP Plus, while TVI (Transport Video Interface) was developed by Techpoint and adopted primarily by Hikvision.
Universal (4-in-1) cameras and DVRs
While CVI is the native protocol, most modern CP Plus cameras and DVRs use universal, multi-format technology to ensure broad compatibility.
- Multi-format Cameras: Most new CP Plus analog HD cameras are "4-in-1," meaning they can output in CVI, TVI, AHD, and standard analog (CVBS) formats. You can switch the video format via a switch on the camera's cable or its OSD menu.
- Adaptive DVRs: New CP Plus DVRs are also "auto-adaptive" or "universal," designed to automatically recognize and connect to cameras using CVI, TVI, AHD, or CVBS signals.
How to ensure the best compatibility
To ensure the best performance and compatibility, follow these guidelines:
- For CP Plus cameras on a CP Plus DVR, use the native CVI format. Your DVR will likely recognize it automatically.
- If a camera and DVR don't connect automatically, check if the camera's video output is set to a different format, like TVI. You can switch the format using the physical button on the camera's cable or the on-screen display (OSD) menu.
- Always check the documentation for both your specific camera and DVR models to confirm their compatibility and any special setup instructions.
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