Possible Cause 1: The camera does not support coaxial functionality

Solution: Make sure the camera motherboard is configured with a coaxial function or not, if you check the BOM, you can normally see (CC) logo behind the model on the mother board.

Possible Cause 2:The DVR protocol is not set or operated in the right way

Solution: Firstly find the PTZ interface of DVR,make sure that the PTZ interface is coaxial control instead of RS485 control, then set the PTZ protocol to coaxial, and the protocol can be changed to the corresponding mode protocol.

Possible Cause 3: Camera’s coaxial protocol and DVR ‘s is incompatible

Solution: This situation is generally caused by mismatch of coaxial operation and actual match, or part of the button function is abnormal, or completely out of control. The only solution is to reconnect the coaxial protocol, the customer will have to tell us the DVR model or send us the DVR directly.

Possibility 1:Network disconnection

Solution: Connect PC to the network to check if it works. Check PC for viruses or cable or network failures until PC can connect via the PING command

Possibility 2:The IP address has been occupied by other devices

Solution: Stop the connection between the IP camera and the network and connect the IP camera separately to the PC, to reset the IP address based on the recommended correct operation

Possibility 3:IP addresses are in different sub-nets

Solution: Check DVS’s IP address, sub-net mask address, and gateway settings

Possibility 4:Network physical address and IP camera conflict

Solution: Modify the physical address of the IP camera.

Possibility 5:Web port has been modified

Solution: Contact your network administrator for information

Possibility 6:Unknown

Solution: Reconnect according to RESET to default setting, default IP address is 192.168.1.120, sub-net mask is 255.255.255.0 (partial special version, default IP address is 192.168.1.88, Sub-net mask 255.255.255.0)

Possibility:ActiveX not installed

Solution: ActiveX must be installed the first time when a IP camera is accessed via Internet Explore

How to install: Access the IP camera, click File, pop up the File download window, select run or Save to download. Please refer to the ActiveX installation section to install ActiveX.

• Possibility:IE has a high security level
  
• Solution: Change IE browser settings
• Steps: Open the IE,IE tool-> Internet option-> Security-> customize the level shown in figure 1 and change the other parameter as shown in figure 2

Figure 1

Figure 2

Solution: Remove the browser’s cache

Steps: Open IE click tools-Select Internet options-in Internet temporary File click Delete File button, select Delete all offline content, then click OK and log on to IP camera again.

Possibility 1:The frame rate of the IP camera is too low

Solution: Increase video frame rate

Possibility 2:Too many users are viewing images.

Solution: blocking certain clients or reducing frame rates

Possibility3:Low bandwidth

Solution: Reduce video frame rate or video compression bit rate.

Solution: There is a RESET button on the rear panel of the IP camera, holding the button for more than 5 seconds. The camera will return to all default parameters (factory settings) with a username and password of “admin” and “1111”. Some special versions of the user name and password are “admin”.

！Note: If you are not a professional operator, do not press RESET. After reset, all parameters will be returned to factory settings (except physical network addresses)

Possibility 1:No audio input connection

Solution: Check the host’s audio connection

Possibility 2:IP camera audio option turned off

Solution: Check the audio parameter settings to see if the audio is turned on.

Possibility:Device search software uses multicast protocol to search. But the firewall forbids multicast packets.

Solution: disable Firewall

Possibility 1:System problems, the DirectX feature is disabled, which will result in slow image display and color anomalies.