227 ENGLISH
The IP camera frequently goes online and offline and the status of it displays as
<Disconnected>.
Possible Reasons:
−
The IP Camera and the NVR versions are not compatible.
−
Unstable power supply of IP Camera.
−
Unstable network between IP Camera and NVR.
−
Limited flow by the switch connected with IP Camera and NVR.
5.
Verify that the IP Camera and the NVR versions are compatible.
1)
Enter the <IP Camera Management> interface: Menu > Camera > Camera> IP Camera, and view
the firmware version of the connected IP Camera.
2)
Enter the <System Info> interface: Menu> Maintenance> System Info> Device Info and view the
firmware version of the NVR.
6.
Verify that the power supply of IP Camera is stable.
1)
Verify that the power indicator is normal.
2)
When the IP Camera is offline, please try the <Ping Command> on the PC to check if the PC
connects with the IP Camera.
7.
Verify that the network between the IP Camera and the NVR is stable.
1)
When the IP Camera is offline, connect the PC and the NVR with the <RS-232> cable.
2)
Open the <Super Terminal>, use the <Ping Command> and keep sending large data packages to
the connected IP Camera, and check if there exists <Packet Loss>.
Note:
Simultaneously press <Ctrl> and <C> to exit the
<Ping Command>
.
Example:
Enter “
ping 172.6.22.131 –l 1472 –f
”.
8.
Verify that the <Switch> is not <Flow Control>.
Check the brand and the model of the <Switch> connecting the IP Camera with the NVR and
contact the manufacturer of the <Switch> to check if it has the function of
<Flow Control>.
If so,
please turn it down.
9.
Check if the fault is solved by the Steps 1 to 4.
If it is solved, finish the process.
If not, please contact the engineer from our company to do the further process.
No monitor is connected with the NVR locally and when you manage the IP Camera to connect with the
device by web browser remotely, of which the status displays as <Connected>. And then you connect
the device with the monitor via the VGA or HDMI interface and reboot the device, there is a black
screen with the mouse cursor.
Connect the NVR with the monitor before startup via the VGA or HDMI interface, and manage the IP
Camera to connect with the device locally or remotely, the status of the IP Camera displays as
<Connect>. And then connect the device with the <CVBS>, and there is also a black screen.
