1. Infrared Dome Cameras: Some common issues include poor nighttime image illumination, overexposure, or bright white rings at night. These problems are often due to improper assembly. If the photosensitive device (photoresistor) is too far from the dome during assembly, it can result in inadequate infrared light activation, leading to poor nighttime illumination. Overexposure and white rings in the image are often caused by the refraction of infrared light emitted by the infrared LED through the dome to the lens. To resolve this, it's essential to prevent the refraction of infrared light onto the lens. Typically, this is achieved by using a sponge ring to isolate the lens from infrared light. During assembly, it's crucial to ensure that the dome is securely placed against the sponge ring.
2. Day-Night Infrared Waterproof Cameras: These cameras may exhibit normal daytime images but appear overexposed at night. This phenomenon is typically caused by the presence of reflective objects in the camera's operating environment or using the camera in a very confined space. The excessive reflection of infrared light can lead to these issues. To address this problem, you should first check for reflective objects in the environment and make improvements if possible. Additionally, verify whether the camera's effective infrared range matches the actual usage distance. Using a long-distance infrared camera in a very confined space can result in overexposed images due to excessively strong infrared light.
3. No Image: If there is no image, begin by checking whether the external power supply's polarity is correct, and whether the output voltage meets the requirements (power supply tolerance: DC 12V ±10%, AC 24V ± 5%). Next, inspect the video cable for proper connections. If you're using a manual iris lens, ensure that the aperture is open. For auto-iris lenses, adjust the LEVEL potentiometer to position the aperture correctly.
4. Color Distortion or Bias: Color distortion may occur due to incorrect white balance (AWB) settings or significant changes in ambient lighting conditions. Verify that the white balance switch is set to OFF and make efforts to improve the ambient lighting conditions if necessary.
5. Image Distortion or Geometric Distortion: This issue can result from problems with the camera's geometric correction circuit, optical lens issues, or mismatches between the characteristic impedance of the video cable and the camera's output impedance. When encountering these problems, first check if the optical lens is functioning correctly and whether the monitor's input impedance switch is set to 75Ω. Next, inspect the video cable for impedance compatibility (75Ω).
These are common issues that can arise with surveillance cameras. Proper troubleshooting and maintenance are essential to ensure effective indoor/outdoor home security with wireless and light bulb cameras.
2. Day-Night Infrared Waterproof Cameras: These cameras may exhibit normal daytime images but appear overexposed at night. This phenomenon is typically caused by the presence of reflective objects in the camera's operating environment or using the camera in a very confined space. The excessive reflection of infrared light can lead to these issues. To address this problem, you should first check for reflective objects in the environment and make improvements if possible. Additionally, verify whether the camera's effective infrared range matches the actual usage distance. Using a long-distance infrared camera in a very confined space can result in overexposed images due to excessively strong infrared light.
3. No Image: If there is no image, begin by checking whether the external power supply's polarity is correct, and whether the output voltage meets the requirements (power supply tolerance: DC 12V ±10%, AC 24V ± 5%). Next, inspect the video cable for proper connections. If you're using a manual iris lens, ensure that the aperture is open. For auto-iris lenses, adjust the LEVEL potentiometer to position the aperture correctly.
4. Color Distortion or Bias: Color distortion may occur due to incorrect white balance (AWB) settings or significant changes in ambient lighting conditions. Verify that the white balance switch is set to OFF and make efforts to improve the ambient lighting conditions if necessary.
5. Image Distortion or Geometric Distortion: This issue can result from problems with the camera's geometric correction circuit, optical lens issues, or mismatches between the characteristic impedance of the video cable and the camera's output impedance. When encountering these problems, first check if the optical lens is functioning correctly and whether the monitor's input impedance switch is set to 75Ω. Next, inspect the video cable for impedance compatibility (75Ω).
These are common issues that can arise with surveillance cameras. Proper troubleshooting and maintenance are essential to ensure effective indoor/outdoor home security with wireless and light bulb cameras.
