D-Link DCS-5020L User Manual page 70

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 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.
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.
If you are using another browser such as Google's Chrome or Apple's Safari, you may need to install the appropriate plugin before the streaming
video will work.
If you are using Java, you may need to update to the latest version of the Java application. Please visit Sun's website in order to obtain the newest
version Java for your computer platform (http://www.java.com).
You browser may also have 3rd party applications blocked. Please make sure that the browser you are using does not have 3rd party plugin support
disabled. You may need to refer to your particular browsers help function in order to turn this functionality on or off.
10. The PIR is not operating 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.
- 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.
D-Link DCS-5222L User Manual 66