D-Link DCS-5211L User Manual page 65

Section 6 - Troubleshooting
7. Why does a series of broad vertical white lines appear through out the image?
It could be that the CMOS sensor (a square panel situated behind the lens that measures the light signals and changes it into a digital
format so your computer can present it into an image that you are familiar with) has become overloaded when it has been exposed to
bright lights such as direct exposure to sunlight or halogen lights. Reposition the Network Camera into a more shaded area immediately
as prolonged exposure to bright lights will damage the CMOS sensor.
8. The camera is producing noisy images. How can I solve the problem?
The video images might be noisy if the Network Camera is used in a very low light environment.
9. The images are poor quality, how can I improve the image quality?
Make sure that your computer's display properties are set to at least 6-bit color. Using 16 or 256 colors on your computer will produce
dithering artifacts in the image, making the image look as if it is of poor quality.
The configuration on the Network Camera image display is incorrect. The Web Configuration Video section of the Web management allows
you to adjust the related-parameters for improved images such as: brightness, contrast, hue and light frequency. Please refer to the Web
Configuration section for detailed information.
10. Why are no images available through the Web browser?
ActiveX might be disabled. If you are viewing the images from Internet Explorer make sure ActiveX has been enabled in the Internet Options
menu. You may also need to change the security settings on your browser to allow the ActiveX plug-in to be installed.
If you are using Internet Explorer with a version number lower than 6, then you will need to upgrade your Web browser software in order
to view the streaming video transmitted by the Network Camera.
11. The PIR is no operation well, how can I improve the PIR quality?
- For the Passive Infrared Sensor (PIR) to function properly it is required to have direct line of site to the object. When
the room has many obstacles or the line of site is obstructed by glass, the PIR will not function properly.
- When the environment temperature is too high, the PIR detection will slow down and should not be mistaken for a faulty PIR.
- This Network Camera can only be installed indoors. Do not install this camera in a place where
IR interference can be a problem. IR interference can be found close to glass doors or windows,
where direct sunlight can cause interference or in the path of car headlights.
D-Link DCS-5211L/DCS-5222L User Manual 61