common malfunctions
1. No image
First check whether the polarity of the external power supply is correct and whether the output voltage meets the requirements (power supply error: DC12V±10%, AC24V±5%
), secondly, check whether the video connection is in good contact; if you use a manual iris lens, you need to check whether the iris is open, and an automatic iris lens needs to be adjusted.
Section LEVEL potentiometer to make the iris in the right position.
2. Color distortion, color cast
It may be that the white balance switch (AWB) is set improperly, or the ambient light conditions have changed too much. At this time, check whether the switch setting is
OFF position, you should find ways to improve the lighting conditions of the environment.
3. The image appears distorted or geometrically distorted
This phenomenon may be caused by a problem with the geometric correction circuit of the camera or monitor, or a problem with the optical lens, or a video connection cable or device.
The characteristic impedance of the device does not match the output impedance of the camera. When the above phenomenon occurs, please check whether the optical lens used is abnormal and the output of the monitor.
Whether the input impedance switch is set at 75Ω, and then check whether the impedance of the video connection cable is 75Ω.
