.png)
HDCVI VS. HD-SDI
Longer Transmission Distance.
Both HD-SDI and HDCVI can transfer HD video @720p/1080p, but HDCVI currently has the distinct advantage of transmission distance. HD-SDI in general transmission of media reaches 100 meters at most, while HDCVI can transmit 500 meters by using 75-3 cable and offers low signal distortion rate.
Figure 1 Transmission Distance Differences
HD-CVI offers better Anti-Interference Capability
Anti-interference capability found in HD-SDI solutions is relatively poor when installed in high-frequent radiation environments. This could lead to higher bit error ratios. HDCVI however, adopts low-frequency modulation technology, which eliminates high-frequency wireless electric radiation that ensures stable video transmission at a high image quality.
Figure 2 Anti-Interference Capability
HDCVI VS. IP
Reliability
HDCVI uses P2P transmission to ensure a reliable and smooth transmission. IP network cameras use Ethernet for transmission and thus may lead to network jitter and packet loss.
Real-time
Network HD uses video buffer technology and the delay is generally controlled within 300 milliseconds within a common and fair networking environment; However, HDCVI has no latency capability which offers an outstanding real-time performance.
No Compression
HDCVI does not compress video at the camera to maintain its original effect and therefore presents vivid image quality.
Figure 3
Highlights
Lower overall Cost
Unlike HD-SDI, which requires higher demands from cabling and installation; HDCVI solution can use the same coax cabling in place and often used by conventional analog solutions, which offers a great convenience and also helps to decrease cost.
Smart control
HDCVI is able to transmit multiple-signals (video/audio and dual-way data) over one coax cable, it allows for video/audio synchronized transmission as well as reverse-signal transmission control; which further simplifies the installation.