Hemisphere Camera Frequently Asked Questions

**Problem 1: Infrared Dome Camera Color Distortion or Color Cast** This issue can occur when the auto white balance (AWB) is not properly set, or when ambient lighting conditions change significantly. To address this, check if the AWB switch is in the OFF position and consider improving the lighting environment to ensure consistent color reproduction. **Question 2: Night Vision Infrared Hemisphere Camera Works Normally During the Day but Appears White at Night** This is often caused by reflective surfaces in the environment or a small enclosed space where infrared light reflects back into the camera. First, identify if there are any reflective materials present and try to modify the environment. Also, check whether the infrared range of the camera matches the actual installation distance. Using a long-range IR camera in a small area may cause overexposure, resulting in a white image. **Question 3: Poor Illumination, White or Bright Iris Effect on IR Dome Camera at Night** This usually happens due to improper assembly. If the photosensitive device (photoresistor) is too far from the infrared dome, the IR lights may not activate correctly, leading to poor night vision. The white or bright iris effect is often caused by infrared light being refracted through the dome cover into the lens. To fix this, use a sponge ring to isolate the lens from the IR light and ensure the dome is tightly sealed during installation. **Question 4: Black Bars or Lines on the Screen** This is typically caused by excessive ripple in the power supply output. To resolve this, improve the filtering system and use a high-quality DC power supply to stabilize the voltage. **Problem 5: Poor Waterproofing and Heat Dissipation** After prolonged use, especially in northern regions, moisture buildup inside the camera may occur due to inadequate sealing and poor thermal management. When the IR lamp is active, it generates heat, and if the housing doesn’t dissipate it effectively, the camera’s lifespan will be reduced. A better solution is to design the housing with multiple ventilation channels for improved heat dissipation. **Question 6: Poor Color Reproduction During the Day** You might notice a color cast in daylight, which is often due to the camera’s filter. Most infrared dome cameras use a dual-band filter that allows some infrared light to pass through. However, natural light contains more infrared components, which can interfere with color accuracy, making green plants appear gray. An IRCUT dual filter helps solve this by switching between an IR cut filter during the day and full-spectrum glass at night, ensuring accurate color reproduction in all lighting conditions. **Question 7: No Image from the Infrared Dome Camera** First, verify that the external power supply is connected correctly and that the output voltage meets specifications (DC 12V ±10%, AC 24V ±5%). Then, check the video cable connection. If using a manual iris lens, make sure the aperture is open. Adjust the LEVEL potentiometer to ensure the aperture is properly positioned. **Question 8: Poor Image Quality from Infrared Dome Camera** - Check if the lens is dirty or smudged. - Ensure the aperture is properly adjusted. - Verify that the video cable is securely connected. - Check the electronic shutter and white balance settings. - Confirm that the transmission distance is within acceptable limits. - Make sure the voltage is stable. - Look for nearby sources of interference. - If installed in an elevator, ensure proper insulation from electrical noise. - Check that the CS interface is properly connected. **Problem 9: Image Distortion or Geometric Distortion** This could be caused by issues with the IR dome camera itself, the monitor’s geometry correction circuit, or the optical lens. It might also result from mismatched impedance between the video cable and the camera. To troubleshoot, check if the lens is functioning correctly and confirm that the monitor’s input impedance is set to 75Ω. Also, verify that the video cable has a 75Ω impedance to match the camera’s output.

Dimming Power Supply

Dimming Power Supply,Transformer Power Supply,Power Supply For Pdlc Film,Pdlc Glass Power Supply

Shenzhen YuGuang New Material Co.,Ltd , https://www.ygsmartfilm.com