TVI's video signal is a high-definition model, which is more susceptible to interference than ordinary CVBS signals

1. Confirm whether the power cord and BNC line are in parallel, so that the AC power (220V and above) will affect the TVI signal, and it should be worn separately.

2. Avoid interference sources;

3. You can add jammers to reduce interference.

4. The transmission distance is long and the signal is easy to attenuate. It is recommended to transmit the signal through optical fiber.