COMPRO NC420 User Manual page 69

Symptom
Network bandwidth is insufficient.
Without sufficient bandwidth, video quality will deteriorate and image errors like
pixelation or frame-drop may occur. When you view your camera remotely from the
Internet, your camera needs sufficient upload bandwidth to transmit video stream and
you need sufficient download bandwidth to download video stream at the remote
location.
To gain satisfactory video quality, ensure there is sufficient upload bandwidth available
to your network camera by taking the following actions:
Part of image becomes
p i xe l a t e d / S q u a re
colock blocks are seen
Consider the following action to ensure sufficient downlaod bandwidth at your remote
viewing location:
Possible Cause/Solution
1. Contact your Internet Service Provider (ISP) to confirm the upload/download
speed limit of your service. If the bit rate of the video stream is set at 512Kbps
or higher but your Internet service only provides a max. of 512Kbps for upload
bandwidth, then try to lower the bit rate setting in [Setup] > [Video].
2. Run a network speed diagnostics on WebVUer to determine the bandwidth
level of the currently connected network. To do so, log in to your camera using
WebVuer and go to [Setup] > [Network] > [Network Bandwidth].When the speed
diagnostics is done, the WebVUer will advise you of the appropriate setting.
1. Contact your Internet Service Provider (ISP) to confirm the upload/download
speed limit of your service. If the bit rate of the video stream is set at 3Mbps
or higher but your Internet service only provides a max. of 2Mbps download
bandwidth, then try to lower the bit rate setting in [Setup] > [Video].
2. Upgrade to Gigabit network switch. Regular 10/100 Mbps network switch cannot
handle multiple megapixel channels, thus you may consider upgrading to
Gigabit network switch when building up your network infrastructure.
3. While you are viewing the network camera remotely, shutting down any other
applications that are also consuming the network bandwidth in the background.
Chapter 9: Troubleshooting
Symptoms, Causes and Solutions 9-11