70
D-Link DCS-5222L User Manual
Section 6 - Troubleshooting
8. 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 Image Setup section on page 33 explains how to adjust the related-
parameters for improved images such as: brightness, contrast, hue and light frequency.
9. 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.
10. The PIR is not operating well, how can I improve the 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.
• Do not install this camera next to or in front of an air conditioner outlet or vent.
• Do not install this camera close to wireless devices with high frequencies as the PIR is easily affected by RF radiation.
• The PIR functions best when detecting lateral movements. Radial movements cannot be detected as well as lateral movements.
• Do not install this camera directly under an extremely bright light. The PIR cannot fully suppress a bright white light.
• Any movements from an object with a normal body temperature, like humans or animals, can be detected. To avoid any malfunctions, install
this camera at the proper height.
• To avoid any malfunctions, install this camera in an environment with an average temperature of 25°C. Smaller movements of an object can be
detected within a distance of 2.5 meters, at the height of an average adult. A larger movement of an object is required for detection between
a distance of 2.5 and 5 meters.
• Install this camera on a firm, static, anti-shock surface.
