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Some network camera malfunctions and solutions
The network camera is also called IP CAMERA (abbreviated as IPC) and is composed of a network coding module and an analog camera. The network coding module encodes and compresses the analog video signal collected by the analog camera into a digital signal so that it can directly access the network switching and routing equipment. The network camera incorporates an embedded chip and uses an embedded real-time operating system. Network cameras are a new generation of products combining traditional cameras with network video technology. The video signal sent from the camera is digitized and compressed by an efficient compression chip and transmitted to the Web server via the network bus.
Users on the network can directly use the browser to view the camera images on the Web server. The authorized users can also control the actions of the camera pan-tilt lens or operate the system configuration. Network cameras can be more simple to implement monitoring, especially remote monitoring, easier construction and maintenance, better support for audio, better support for alarm linkage, more flexible video storage, richer product selection, and higher video quality And more perfect monitoring and management. In addition, IPC supports WIFI wireless access, 3G access, POE power supply (network power supply) and fiber access.
Common faults and solutions
I. Can't find the IP address of IP camera using IP search tool or central management software?
First confirm the network cable and power supply. If the camera still cannot find the IP after confirming, then you must confirm your network segment and see if the network camera network segment is the same as the network segment of your computer. If it is not the same, you need to The network camera network segment is the same as the network segment of your computer. This will allow your computer to find the IP address of the webcam.
If the default IP is 192.168.1.100 or 192.168.1.18 [subject to the operating instructions], without changing the default IP, first change the IP of the computer to the IP of the same network segment as the network camera.
Second, after the program is upgraded, the video cannot be played normally
Solution: Close all browsing pages and look for the following files in the operating system directory: NetClient.dll, NetViewX.cab, and NetViewX.ocx files and delete them. Then use your browser to reconnect the webcam. The browser will prompt you to reinstall the playback controls.
If you still cannot browse, it is recommended that you add the IP address or address segment of the IP camera to the browser's trusted site, adjust the relevant security options, and set it to Enable or Prompt.
Third, why is it wrong to access the webcam through the browser after upgrading?
Solution: Delete the browser's cache. Specific steps: Open the browser, select "Tools - Internet Options", in the second entry (Temporary Internet files), click the "Delete Files" button, check the "Delete all offline content" option, and then determine. Log in to your webcam again.
Fourth, the client or WEB can not login
Windows XP sp2 Active X control is blocked, when you install the WEB control, if the system pops up the dialog box to prevent the installation of controls, you need to check the IE browser settings. Open the Internet option in the Internet Explore browser, select the custom level, and reselect "Initiate and Script Run Active X Controls Not Marked Safe" and "Download Unsigned Active X Controls" as prompts. Save and rerun the Internet Explore browser. If you have installed 3721 Internet Assistant control masking software or personal firewall, please turn it off. Then log back in. Please do not log in with a browser other than IE.
If it is WIN VISTA system. Need to close the user account control (double-click to enter the user account → close the user account control), set up, restart the computer.
5. Why can't normal data pass through the switch?
Possible Causes:
1. If it is a Layer 2 switch, check whether the IP address is incorrect or the VLAN is divided into access rights.
2. If the switch is a Layer 3 switch, check whether the switch port is bound to the MAC address.
3. Check the firewall configuration rules
Solution:
1. First, use the ping command to test whether there is a timeout error. If it occurs, check whether the network cable is properly connected.
2. If the switch is bound to IP and Mac addresses, you need to configure the switch to bind the port, IP address, and MAC address of the IP camera.
3. Check the switch firewall rule settings and add the network camera related ports. Such as: 3000, 3001, 3002, 3004, 80 and so on. Otherwise all packets will be filtered and cannot be reached.
6. After the network camera is connected, the internal network can already be watched, but the external network cannot watch it.
There are two factors on this issue.
The first is that there is no port mapping, because each camera is to transmit the signal and watch it through the monitor. If we do not do port mapping, the signal will not be sent out, so the signal will only be in the internal network, so that the external network can not accept the signal, making the external network monitor can not monitor the scene in real time.
Another problem is the domain name of your computer. The IP camera's external network access address and domain name are directly linked. The IP camera's external network access address can be your computer's external network IP plus port number, or it can be your domain name information. Add the port number.
7. After the high-definition network dome camera is powered on, it does not self-check, no image or noise?
Possible causes: The power cord is connected incorrectly or the power supply is damaged.
Solution: Please check the wiring again; use a multimeter to test the power supply voltage. If the nominal voltage is not reached, replace the power supply that meets the requirements.
Possible reason: The head is stuck.
Solution: Please check whether there is any foreign matter in the body and check that all parts are well assembled and free from falling off. Check that the dome connection hinge does not enclose the head
Eight, the image screen is very stuck, paused, and not smooth
If you choose the resolution is uxga or higher, the maximum frame rate is 7-20 frames, 7 frames in a second seems to be incoherent, is a normal phenomenon, if you want to make the picture more smooth, please The resolution is reduced and the frame rate is set to 25 frames. If the fixed stream is set, set the stream higher, or set it to a variable stream. Select the stream in the network transmission QOS in the network settings to give priority to the stream.
Network Reason: First ping the network camera to see if it is lost. If the packet is lost, check whether the network cable and network device are normal. Insufficient network bandwidth or congestion can also cause picture pauses.
Nine, connected to four cameras, why there is only one camera?
Since you did not change the IP address and port number of the IP camera, because the IP cameras have multiple connections, the IP address and port number of each IP camera cannot be the same. Otherwise, there is no IP address or the port number is the same. The video from the video camera will create a conflict, the video will be distorted or no video will appear at all.
X. Infrared dome camera In the dark environment, the image between color and black and white constantly flashes?
Analysis of the causes: The infrared light resistance of the photosensitive resistor has been detected due to uneven ambient light.
Solution: Install the camera as far as possible so that the camera lens is not facing the window, because the prison environment is limited to the windows are installed with a very dense protective net, plus an individual prison cell building does not have a special clothes-room, the prisoners clothes are dry In the bathroom, in the case of insufficient light conditions, the light coming in through the outdoors is not uniform, and when it is dark, it causes light sensitivity of the photosensitive resistor.